Commit Graph

7302 Commits

Author SHA1 Message Date
Jiri Slaby 0df499eaf3 kbuild: dummy-tools: pretend we understand __LONG_DOUBLE_128__
There is a test in powerpc's Kconfig which checks __LONG_DOUBLE_128__
and sets CONFIG_PPC_LONG_DOUBLE_128 if it is understood by the compiler.

We currently don't handle it, so this results in PPC_LONG_DOUBLE_128 not
being in super-config generated by dummy-tools. So take this into
account in the gcc script and preprocess __LONG_DOUBLE_128__ as "1".

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-21 02:47:48 +09:00
Masahiro Yamada 5b8a9a8fd1 modpost: fix module versioning when a symbol lacks valid CRC
Since commit 7b4537199a ("kbuild: link symbol CRCs at final link,
removing CONFIG_MODULE_REL_CRCS"), module versioning is broken on
some architectures. Loading a module fails with "disagrees about
version of symbol module_layout".

On such architectures (e.g. ARCH=sparc build with sparc64_defconfig),
modpost shows a warning, like follows:

  WARNING: modpost: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
  Is "_mcount" prototyped in <asm/asm-prototypes.h>?

Previously, it was a harmless warning (CRC check was just skipped),
but now wrong CRCs are used for comparison because invalid CRCs are
just skipped.

  $ sparc64-linux-gnu-nm -n vmlinux
    [snip]
  0000000000c2cea0 r __ksymtab__kstrtol
  0000000000c2ceb8 r __ksymtab__kstrtoul
  0000000000c2ced0 r __ksymtab__local_bh_enable
  0000000000c2cee8 r __ksymtab__mcount
  0000000000c2cf00 r __ksymtab__printk
  0000000000c2cf18 r __ksymtab__raw_read_lock
  0000000000c2cf30 r __ksymtab__raw_read_lock_bh
    [snip]
  0000000000c53b34 D __crc__kstrtol
  0000000000c53b38 D __crc__kstrtoul
  0000000000c53b3c D __crc__local_bh_enable
  0000000000c53b40 D __crc__printk
  0000000000c53b44 D __crc__raw_read_lock
  0000000000c53b48 D __crc__raw_read_lock_bh

Please notice __crc__mcount is missing here.

When the module subsystem looks up a CRC that comes after, it results
in reading out a wrong address. For example, when __crc__printk is
needed, the module subsystem reads 0xc53b44 instead of 0xc53b40.

All CRC entries must be output for correct index accessing. Invalid
CRCs will be unused, but are needed to keep the one-to-one mapping
between __ksymtab_* and __crc_*.

The best is to fix all modpost warnings, but several warnings are still
remaining on less popular architectures.

Fixes: 7b4537199a ("kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS")
Reported-by: matoro <matoro_mailinglist_kernel@matoro.tk>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: matoro <matoro_mailinglist_kernel@matoro.tk>
2022-08-21 02:47:36 +09:00
Linus Torvalds e45c890140 hardening fixes for v6.0-rc2
- Also undef LATENT_ENTROPY_PLUGIN for per-file disabling (Andrew Donnellan)
 
 - Return EFAULT on copy_from_user() failures in LoadPin (Kees Cook)
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Merge tag 'hardening-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening fixes from Kees Cook:

 - Also undef LATENT_ENTROPY_PLUGIN for per-file disabling (Andrew
   Donnellan)

 - Return EFAULT on copy_from_user() failures in LoadPin (Kees Cook)

* tag 'hardening-v6.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file
  LoadPin: Return EFAULT on copy_from_user() failures
2022-08-19 13:56:14 -07:00
Andrew Donnellan 012e8d2034 gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file
Commit 36d4b36b69 ("lib/nodemask: inline next_node_in() and
node_random()") refactored some code by moving node_random() from
lib/nodemask.c to include/linux/nodemask.h, thus requiring nodemask.h to
include random.h, which conditionally defines add_latent_entropy()
depending on whether the macro LATENT_ENTROPY_PLUGIN is defined.

This broke the build on powerpc, where nodemask.h is indirectly included
in arch/powerpc/kernel/prom_init.c, part of the early boot machinery that
is excluded from the latent entropy plugin using
DISABLE_LATENT_ENTROPY_PLUGIN. It turns out that while we add a gcc flag
to disable the actual plugin, we don't undefine LATENT_ENTROPY_PLUGIN.

This leads to the following:

    CC      arch/powerpc/kernel/prom_init.o
  In file included from ./include/linux/nodemask.h:97,
                   from ./include/linux/mmzone.h:17,
                   from ./include/linux/gfp.h:7,
                   from ./include/linux/xarray.h:15,
                   from ./include/linux/radix-tree.h:21,
                   from ./include/linux/idr.h:15,
                   from ./include/linux/kernfs.h:12,
                   from ./include/linux/sysfs.h:16,
                   from ./include/linux/kobject.h:20,
                   from ./include/linux/pci.h:35,
                   from arch/powerpc/kernel/prom_init.c:24:
  ./include/linux/random.h: In function 'add_latent_entropy':
  ./include/linux/random.h:25:46: error: 'latent_entropy' undeclared (first use in this function); did you mean 'add_latent_entropy'?
     25 |         add_device_randomness((const void *)&latent_entropy, sizeof(latent_entropy));
        |                                              ^~~~~~~~~~~~~~
        |                                              add_latent_entropy
  ./include/linux/random.h:25:46: note: each undeclared identifier is reported only once for each function it appears in
  make[2]: *** [scripts/Makefile.build:249: arch/powerpc/kernel/prom_init.o] Fehler 1
  make[1]: *** [scripts/Makefile.build:465: arch/powerpc/kernel] Fehler 2
  make: *** [Makefile:1855: arch/powerpc] Error 2

Change the DISABLE_LATENT_ENTROPY_PLUGIN flags to undefine
LATENT_ENTROPY_PLUGIN for files where the plugin is disabled.

Cc: Yury Norov <yury.norov@gmail.com>
Fixes: 38addce8b6 ("gcc-plugins: Add latent_entropy plugin")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216367
Link: https://lore.kernel.org/linuxppc-dev/alpine.DEB.2.22.394.2208152006320.289321@ramsan.of.borg/
Reported-by: Erhard Furtner <erhard_f@mailbox.org>
Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220816051720.44108-1-ajd@linux.ibm.com
2022-08-16 12:25:53 -07:00
Linus Torvalds 69dac8e431 RISC-V Patches for the 5.20 Merge Window, Part 2
There's still a handful of new features in here, but there are a lot of
 fixes/cleanups as well:
 
 * Support for the Zicbom for explicit cache-block management, along with
   the necessary bits to make the non-standard cache management ops on
   the Allwinner D1 function.
 * Support for the Zihintpause extension, which codifies a go-slow
   instruction used for cpu_relax().
 * Support for the Sstc extension for supervisor-mode timer/counter
   management.
 * Many device tree fixes and cleanups, including a large set for the
   Canaan device trees.
 * A handful of fixes and cleanups for the PMU driver.
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Merge tag 'riscv-for-linus-5.20-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:
 "There's still a handful of new features in here, but there are a lot
  of fixes/cleanups as well:

   - Support for the Zicbom extension for explicit cache-block
     management, along with the necessary bits to make the non-standard
     cache management ops on the Allwinner D1 function

   - Support for the Zihintpause extension, which codifies a go-slow
     instruction used for cpu_relax()

   - Support for the Sstc extension for supervisor-mode timer/counter
     management

   - Many device tree fixes and cleanups, including a large set for the
     Canaan device trees

   - A handful of fixes and cleanups for the PMU driver"

* tag 'riscv-for-linus-5.20-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (43 commits)
  dt-bindings: gpio: sifive: add gpio-line-names
  wireguard: selftests: set CONFIG_NONPORTABLE on riscv32
  RISC-V: KVM: Support sstc extension
  RISC-V: Improve SBI definitions
  RISC-V: Move counter info definition to sbi header file
  RISC-V: Fix SBI PMU calls for RV32
  RISC-V: Update user page mapping only once during start
  RISC-V: Fix counter restart during overflow for RV32
  RISC-V: Prefer sstc extension if available
  RISC-V: Enable sstc extension parsing from DT
  RISC-V: Add SSTC extension CSR details
  riscv:uprobe fix SR_SPIE set/clear handling
  dt-bindings: riscv: fix SiFive l2-cache's cache-sets
  riscv: ensure cpu_ops_sbi is declared
  RISC-V: cpu_ops_spinwait.c should include head.h
  RISC-V: Declare cpu_ops_spinwait in <asm/cpu_ops.h>
  riscv: dts: starfive: correct number of external interrupts
  riscv: dts: sifive unmatched: Add PWM controlled LEDs
  riscv/purgatory: Omit use of bin2c
  riscv/purgatory: hard-code obj-y in Makefile
  ...
2022-08-12 18:39:43 -07:00
Masahiro Yamada d8357e3bf8
riscv/purgatory: Omit use of bin2c
The .incbin assembler directive is much faster than bin2c + $(CC).

Do similar refactoring as in commit 4c0f032d49 ("s390/purgatory:
Omit use of bin2c").

Please note the .quad directive matches to size_t in C (both 8 byte)
because the purgatory is compiled only for the 64-bit kernel.
(KEXEC_FILE depends on 64BIT).

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20220625223438.835408-2-masahiroy@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2022-08-11 09:32:34 -07:00
Linus Torvalds 21f9c8a13b Revert "Makefile.extrawarn: re-enable -Wformat for clang"
This reverts commit 258fafcd06.

The clang -Wformat warning is terminally broken, and the clang people
can't seem to get their act together.

This test program causes a warning with clang:

	#include <stdio.h>

	int main(int argc, char **argv)
	{
		printf("%hhu\n", 'a');
	}

resulting in

  t.c:5:19: warning: format specifies type 'unsigned char' but the argument has type 'int' [-Wformat]
          printf("%hhu\n", 'a');
                  ~~~~     ^~~
                  %d

and apparently clang people consider that a feature, because they don't
want to face the reality of how either C character constants, C
arithmetic, and C varargs functions work.

The rest of the world just shakes their head at that kind of
incompetence, and turns off -Wformat for clang again.

And no, the "you should use a pointless cast to shut this up" is not a
valid answer.  That warning should not exist in the first place, or at
least be optinal with some "-Wformat-me-harder" kind of option.

[ Admittedly, there's also very little reason to *ever* use '%hh[ud]' in
  C, but what little reason there is is entirely about 'I want to see
  only the low 8 bits of the argument'. So I would suggest nobody ever
  use that format in the first place, but if they do, the clang
  behavious is simply always wrong. Because '%hhu' takes an 'int'. It's
  that simple. ]

Reported-by: Sudip Mukherjee (Codethink) <sudipm.mukherjee@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-08-11 08:40:01 -07:00
Linus Torvalds 0af5cb349a Kbuild updates for v5.20
- Remove the support for -O3 (CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3)
 
  - Fix error of rpm-pkg cross-builds
 
  - Support riscv for checkstack tool
 
  - Re-enable -Wformwat warnings for Clang
 
  - Clean up modpost, Makefiles, and misc scripts
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Merge tag 'kbuild-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Remove the support for -O3 (CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3)

 - Fix error of rpm-pkg cross-builds

 - Support riscv for checkstack tool

 - Re-enable -Wformwat warnings for Clang

 - Clean up modpost, Makefiles, and misc scripts

* tag 'kbuild-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (30 commits)
  modpost: remove .symbol_white_list field entirely
  modpost: remove unneeded .symbol_white_list initializers
  modpost: add PATTERNS() helper macro
  modpost: shorten warning messages in report_sec_mismatch()
  Revert "Kbuild, lto, workaround: Don't warn for initcall_reference in modpost"
  modpost: use more reliable way to get fromsec in section_rel(a)()
  modpost: add array range check to sec_name()
  modpost: refactor get_secindex()
  kbuild: set EXIT trap before creating temporary directory
  modpost: remove unused Elf_Sword macro
  Makefile.extrawarn: re-enable -Wformat for clang
  kbuild: add dtbs_prepare target
  kconfig: Qt5: tell the user which packages are required
  modpost: use sym_get_data() to get module device_table data
  modpost: drop executable ELF support
  checkstack: add riscv support for scripts/checkstack.pl
  kconfig: shorten the temporary directory name for cc-option
  scripts: headers_install.sh: Update config leak ignore entries
  kbuild: error out if $(INSTALL_MOD_PATH) contains % or :
  kbuild: error out if $(KBUILD_EXTMOD) contains % or :
  ...
2022-08-10 10:40:41 -07:00
Linus Torvalds e74acdf55d Modules updates for 6.0
For the 6.0 merge window the modules code shifts to cleanup and minor fixes
 effort. This is becomes much easier to do and review now due to the code
 split to its own directory from effort on the last kernel release. I expect
 to see more of this with time and as we expand on test coverage in the future.
 The cleanups and fixes come from usual suspects such as Christophe Leroy and
 Aaron Tomlin but there are also some other contributors.
 
 One particular minor fix worth mentioning is from Helge Deller, where he spotted
 a *forever* incorrect natural alignment on both ELF section header tables:
 
   * .altinstructions
   * __bug_table sections
 
 A lot of back and forth went on in trying to determine the ill effects of this
 misalignment being present for years and it has been determined there should
 be no real ill effects unless you have a buggy exception handler. Helge actually
 hit one of these buggy exception handlers on parisc which is how he ended up
 spotting this issue. When implemented correctly these paths with incorrect
 misalignment would just mean a performance penalty, but given that we are
 dealing with alternatives on modules and with the __bug_table (where info
 regardign BUG()/WARN() file/line information associated with it is stored)
 this really shouldn't be a big deal.
 
 The only other change with mentioning is the kmap() with kmap_local_page()
 and my only concern with that was on what is done after preemption, but the
 virtual addresses are restored after preemption. This is only used on module
 decompression.
 
 This all has sit on linux-next for a while except the kmap stuff which has
 been there for 3 weeks.
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Merge tag 'modules-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

Pull module updates from Luis Chamberlain:
 "For the 6.0 merge window the modules code shifts to cleanup and minor
  fixes effort. This becomes much easier to do and review now due to the
  code split to its own directory from effort on the last kernel
  release. I expect to see more of this with time and as we expand on
  test coverage in the future. The cleanups and fixes come from usual
  suspects such as Christophe Leroy and Aaron Tomlin but there are also
  some other contributors.

  One particular minor fix worth mentioning is from Helge Deller, where
  he spotted a *forever* incorrect natural alignment on both ELF section
  header tables:

    * .altinstructions
    * __bug_table sections

  A lot of back and forth went on in trying to determine the ill effects
  of this misalignment being present for years and it has been
  determined there should be no real ill effects unless you have a buggy
  exception handler. Helge actually hit one of these buggy exception
  handlers on parisc which is how he ended up spotting this issue. When
  implemented correctly these paths with incorrect misalignment would
  just mean a performance penalty, but given that we are dealing with
  alternatives on modules and with the __bug_table (where info regardign
  BUG()/WARN() file/line information associated with it is stored) this
  really shouldn't be a big deal.

  The only other change with mentioning is the kmap() with
  kmap_local_page() and my only concern with that was on what is done
  after preemption, but the virtual addresses are restored after
  preemption. This is only used on module decompression.

  This all has sit on linux-next for a while except the kmap stuff which
  has been there for 3 weeks"

* tag 'modules-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
  module: Replace kmap() with kmap_local_page()
  module: Show the last unloaded module's taint flag(s)
  module: Use strscpy() for last_unloaded_module
  module: Modify module_flags() to accept show_state argument
  module: Move module's Kconfig items in kernel/module/
  MAINTAINERS: Update file list for module maintainers
  module: Use vzalloc() instead of vmalloc()/memset(0)
  modules: Ensure natural alignment for .altinstructions and __bug_table sections
  module: Increase readability of module_kallsyms_lookup_name()
  module: Fix ERRORs reported by checkpatch.pl
  module: Add support for default value for module async_probe
2022-08-08 14:12:19 -07:00
Linus Torvalds cab9de7169 Coccinelle semantic patch changes
The changes are as follows:
 
 * Update the semantic patches in the kernel that contain a URL for
   Coccinelle with a URL that is currently valid (from myself).
 
 * Add a semantic patch checking for unnecessary NULL tests on dev_{put,
   hold} functions (from Ziyang Xuan, followed bt a modification from
   myself).
 
 * Drop a semantic patch that replaces 0/1 by booleans, as this change was
   considered to be not worthwhile by some maintainers (from Steve Rostedt).
 
 * Extend an existing semantic patch with more checks for useless tests on
   variables addresses (from Jérémy Lefaure).
 
 Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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Merge tag 'coccinelle-for-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux

Pull coccinelle semantic patch updates from Julia Lawall:

 - Update the semantic patches in the kernel that contain a URL for
   Coccinelle with a URL that is currently valid (from myself).

 - Add a semantic patch checking for unnecessary NULL tests on dev_{put,
   hold} functions (from Ziyang Xuan, followed bt a modification from
   myself).

 - Drop a semantic patch that replaces 0/1 by booleans, as this change
   was considered to be not worthwhile by some maintainers (from Steve
   Rostedt).

 - Extend an existing semantic patch with more checks for useless tests
   on variables addresses (from Jérémy Lefaure).

* tag 'coccinelle-for-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux:
  update Coccinelle URL
  coccinelle: free: add version constraint
  scripts/coccinelle/free: add NULL test before dev_{put, hold} functions
  coccinelle: Remove script that checks replacing 0/1 with false/true in functions returning bool
  coccinelle: Extend address test from ifaddr semantic patch to test expressions
2022-08-08 09:42:04 -07:00
Julia Lawall f01701cec8 update Coccinelle URL
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2022-08-07 21:30:36 +02:00
Julia Lawall 18c06cf868 coccinelle: free: add version constraint
The various functions contain a NULL check starting in v5.15.

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2022-08-07 21:30:24 +02:00
Linus Torvalds eb5699ba31 Updates to various subsystems which I help look after. lib, ocfs2,
fatfs, autofs, squashfs, procfs, etc.
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Merge tag 'mm-nonmm-stable-2022-08-06-2' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc updates from Andrew Morton:
 "Updates to various subsystems which I help look after. lib, ocfs2,
  fatfs, autofs, squashfs, procfs, etc. A relatively small amount of
  material this time"

* tag 'mm-nonmm-stable-2022-08-06-2' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (72 commits)
  scripts/gdb: ensure the absolute path is generated on initial source
  MAINTAINERS: kunit: add David Gow as a maintainer of KUnit
  mailmap: add linux.dev alias for Brendan Higgins
  mailmap: update Kirill's email
  profile: setup_profiling_timer() is moslty not implemented
  ocfs2: fix a typo in a comment
  ocfs2: use the bitmap API to simplify code
  ocfs2: remove some useless functions
  lib/mpi: fix typo 'the the' in comment
  proc: add some (hopefully) insightful comments
  bdi: remove enum wb_congested_state
  kernel/hung_task: fix address space of proc_dohung_task_timeout_secs
  lib/lzo/lzo1x_compress.c: replace ternary operator with min() and min_t()
  squashfs: support reading fragments in readahead call
  squashfs: implement readahead
  squashfs: always build "file direct" version of page actor
  Revert "squashfs: provide backing_dev_info in order to disable read-ahead"
  fs/ocfs2: Fix spelling typo in comment
  ia64: old_rr4 added under CONFIG_HUGETLB_PAGE
  proc: fix test for "vsyscall=xonly" boot option
  ...
2022-08-07 10:03:24 -07:00
Linus Torvalds 592d8362bc Misc fixes to kprobes and the faddr2line script, plus a cleanup.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2022-08-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc fixes to kprobes and the faddr2line script, plus a cleanup"

* tag 'perf-urgent-2022-08-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Fix ';;' typo
  scripts/faddr2line: Add CONFIG_DEBUG_INFO check
  scripts/faddr2line: Fix vmlinux detection on arm64
  x86/kprobes: Update kcb status flag after singlestepping
  kprobes: Forbid probing on trampoline and BPF code areas
2022-08-06 17:28:12 -07:00
Linus Torvalds cae4199f93 powerpc updates for 6.0
- Add support for syscall stack randomization.
 
  - Add support for atomic operations to the 32 & 64-bit BPF JIT.
 
  - Full support for KASAN on 64-bit Book3E.
 
  - Add a watchdog driver for the new PowerVM hypervisor watchdog.
 
  - Add a number of new selftests for the Power10 PMU support.
 
  - Add a driver for the PowerVM Platform KeyStore.
 
  - Increase the NMI watchdog timeout during live partition migration, to avoid timeouts
    due to increased memory access latency.
 
  - Add support for using the 'linux,pci-domain' device tree property for PCI domain
    assignment.
 
  - Many other small features and fixes.
 
 Thanks to: Alexey Kardashevskiy, Andy Shevchenko, Arnd Bergmann, Athira Rajeev, Bagas
 Sanjaya, Christophe Leroy, Erhard Furtner, Fabiano Rosas, Greg Kroah-Hartman, Greg Kurz,
 Haowen Bai, Hari Bathini, Jason A. Donenfeld, Jason Wang, Jiang Jian, Joel Stanley, Juerg
 Haefliger, Kajol Jain, Kees Cook, Laurent Dufour, Madhavan Srinivasan, Masahiro Yamada,
 Maxime Bizon, Miaoqian Lin, Murilo Opsfelder Araújo, Nathan Lynch, Naveen N. Rao, Nayna
 Jain, Nicholas Piggin, Ning Qiang, Pali Rohár, Petr Mladek, Rashmica Gupta, Sachin Sant,
 Scott Cheloha, Segher Boessenkool, Stephen Rothwell, Uwe Kleine-König, Wolfram Sang, Xiu
 Jianfeng, Zhouyi Zhou.
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Merge tag 'powerpc-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Add support for syscall stack randomization

 - Add support for atomic operations to the 32 & 64-bit BPF JIT

 - Full support for KASAN on 64-bit Book3E

 - Add a watchdog driver for the new PowerVM hypervisor watchdog

 - Add a number of new selftests for the Power10 PMU support

 - Add a driver for the PowerVM Platform KeyStore

 - Increase the NMI watchdog timeout during live partition migration, to
   avoid timeouts due to increased memory access latency

 - Add support for using the 'linux,pci-domain' device tree property for
   PCI domain assignment

 - Many other small features and fixes

Thanks to Alexey Kardashevskiy, Andy Shevchenko, Arnd Bergmann, Athira
Rajeev, Bagas Sanjaya, Christophe Leroy, Erhard Furtner, Fabiano Rosas,
Greg Kroah-Hartman, Greg Kurz, Haowen Bai, Hari Bathini, Jason A.
Donenfeld, Jason Wang, Jiang Jian, Joel Stanley, Juerg Haefliger, Kajol
Jain, Kees Cook, Laurent Dufour, Madhavan Srinivasan, Masahiro Yamada,
Maxime Bizon, Miaoqian Lin, Murilo Opsfelder Araújo, Nathan Lynch,
Naveen N.  Rao, Nayna Jain, Nicholas Piggin, Ning Qiang, Pali Rohár,
Petr Mladek, Rashmica Gupta, Sachin Sant, Scott Cheloha, Segher
Boessenkool, Stephen Rothwell, Uwe Kleine-König, Wolfram Sang, Xiu
Jianfeng, and Zhouyi Zhou.

* tag 'powerpc-6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (191 commits)
  powerpc/64e: Fix kexec build error
  EDAC/ppc_4xx: Include required of_irq header directly
  powerpc/pci: Fix PHB numbering when using opal-phbid
  powerpc/64: Init jump labels before parse_early_param()
  selftests/powerpc: Avoid GCC 12 uninitialised variable warning
  powerpc/cell/axon_msi: Fix refcount leak in setup_msi_msg_address
  powerpc/xive: Fix refcount leak in xive_get_max_prio
  powerpc/spufs: Fix refcount leak in spufs_init_isolated_loader
  powerpc/perf: Include caps feature for power10 DD1 version
  powerpc: add support for syscall stack randomization
  powerpc: Move system_call_exception() to syscall.c
  powerpc/powernv: rename remaining rng powernv_ functions to pnv_
  powerpc/powernv/kvm: Use darn for H_RANDOM on Power9
  powerpc/powernv: Avoid crashing if rng is NULL
  selftests/powerpc: Fix matrix multiply assist test
  powerpc/signal: Update comment for clarity
  powerpc: make facility_unavailable_exception 64s
  powerpc/platforms/83xx/suspend: Remove write-only global variable
  powerpc/platforms/83xx/suspend: Prevent unloading the driver
  powerpc/platforms/83xx/suspend: Reorder to get rid of a forward declaration
  ...
2022-08-06 16:38:17 -07:00
Linus Torvalds f20c95b46b tpmdd updates for Linux v5.20
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Merge tag 'tpmdd-next-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

Pull tpm updates from Jarkko Sakkinen:
 "Mostly TPM and also few keyring fixes"

* tag 'tpmdd-next-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  tpm: Add check for Failure mode for TPM2 modules
  tpm: eventlog: Fix section mismatch for DEBUG_SECTION_MISMATCH
  tpm: fix platform_no_drv_owner.cocci warning
  KEYS: asymmetric: enforce SM2 signature use pkey algo
  pkcs7: support EC-RDSA/streebog in SignerInfo
  pkcs7: parser support SM2 and SM3 algorithms combination
  sign-file: Fix confusing error messages
  X.509: Support parsing certificate using SM2 algorithm
  tpm: Add tpm_tis_i2c backend for tpm_tis_core
  tpm: Add tpm_tis_verify_crc to the tpm_tis_phy_ops protocol layer
  dt-bindings: trivial-devices: Add Infineon SLB9673 TPM
  tpm: Add upgrade/reduced mode support for TPM1.2 modules
2022-08-06 09:43:02 -07:00
Linus Torvalds a1b02751d6 Sane printk changes for 5.20
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Merge tag 'printk-for-5.20-sane' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

Pull printk updates from Petr Mladek:

 - Allow reading kernel log in gdb even on 32 bits systems

 - More granular check of the buffer usage in printf selftest

 - Clang warning fix

* tag 'printk-for-5.20-sane' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  lib/test_printf.c: fix clang -Wformat warnings
  scripts/gdb: fix 'lx-dmesg' on 32 bits arch
  lib/test_printf.c: split write-beyond-buffer check in two
2022-08-05 09:54:36 -07:00
Linus Torvalds 965a9d75e3 Tracing updates for 5.20 / 6.0
- Runtime verification infrastructure
   This is the biggest change for this pull request. It introduces the
   runtime verification that is necessary for running Linux on safety
   critical systems. It allows for deterministic automata models to be
   inserted into the kernel that will attach to tracepoints, where the
   information on these tracepoints will move the model from state to state.
   If a state is encountered that does not belong to the model, it will then
   activate a given reactor, that could just inform the user or even panic
   the kernel (for which safety critical systems will detect and can recover
   from).
 
 - Two monitor models are also added: Wakeup In Preemptive (WIP - not to be
   confused with "work in progress"), and Wakeup While Not Running (WWNR).
 
 - Added __vstring() helper to the TRACE_EVENT() macro to replace several
   vsnprintf() usages that were all doing it wrong.
 
 - eprobes now can have their event autogenerated when the event name is left
   off.
 
 - The rest is various cleanups and fixes.
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Merge tag 'trace-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from Steven Rostedt:

 - Runtime verification infrastructure

   This is the biggest change here. It introduces the runtime
   verification that is necessary for running Linux on safety critical
   systems.

   It allows for deterministic automata models to be inserted into the
   kernel that will attach to tracepoints, where the information on
   these tracepoints will move the model from state to state.

   If a state is encountered that does not belong to the model, it will
   then activate a given reactor, that could just inform the user or
   even panic the kernel (for which safety critical systems will detect
   and can recover from).

 - Two monitor models are also added: Wakeup In Preemptive (WIP - not to
   be confused with "work in progress"), and Wakeup While Not Running
   (WWNR).

 - Added __vstring() helper to the TRACE_EVENT() macro to replace
   several vsnprintf() usages that were all doing it wrong.

 - eprobes now can have their event autogenerated when the event name is
   left off.

 - The rest is various cleanups and fixes.

* tag 'trace-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (50 commits)
  rv: Unlock on error path in rv_unregister_reactor()
  tracing: Use alignof__(struct {type b;}) instead of offsetof()
  tracing/eprobe: Show syntax error logs in error_log file
  scripts/tracing: Fix typo 'the the' in comment
  tracepoints: It is CONFIG_TRACEPOINTS not CONFIG_TRACEPOINT
  tracing: Use free_trace_buffer() in allocate_trace_buffers()
  tracing: Use a struct alignof to determine trace event field alignment
  rv/reactor: Add the panic reactor
  rv/reactor: Add the printk reactor
  rv/monitor: Add the wwnr monitor
  rv/monitor: Add the wip monitor
  rv/monitor: Add the wip monitor skeleton created by dot2k
  Documentation/rv: Add deterministic automata instrumentation documentation
  Documentation/rv: Add deterministic automata monitor synthesis documentation
  tools/rv: Add dot2k
  Documentation/rv: Add deterministic automaton documentation
  tools/rv: Add dot2c
  Documentation/rv: Add a basic documentation
  rv/include: Add instrumentation helper functions
  rv/include: Add deterministic automata monitor definition via C macros
  ...
2022-08-05 09:41:12 -07:00
Linus Torvalds c1c76700a0 SPDX changes for 6.0-rc1
Here is the set of SPDX comment updates for 6.0-rc1.
 
 Nothing huge here, just a number of updated SPDX license tags and
 cleanups based on the review of a number of common patterns in GPLv2
 boilerplate text.  Also included in here are a few other minor updates,
 2 USB files, and one Documentation file update to get the SPDX lines
 correct.
 
 All of these have been in the linux-next tree for a very long time.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'spdx-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx

Pull SPDX updates from Greg KH:
 "Here is the set of SPDX comment updates for 6.0-rc1.

  Nothing huge here, just a number of updated SPDX license tags and
  cleanups based on the review of a number of common patterns in GPLv2
  boilerplate text.

  Also included in here are a few other minor updates, two USB files,
  and one Documentation file update to get the SPDX lines correct.

  All of these have been in the linux-next tree for a very long time"

* tag 'spdx-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx: (28 commits)
  Documentation: samsung-s3c24xx: Add blank line after SPDX directive
  x86/crypto: Remove stray comment terminator
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_406.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_398.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_391.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_390.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_385.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_320.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_319.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_318.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_298.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_292.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_179.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_168.RULE (part 2)
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_168.RULE (part 1)
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_160.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_152.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_149.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_147.RULE
  treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_133.RULE
  ...
2022-08-04 12:12:54 -07:00
Linus Torvalds 228dfe98a3 Char / Misc driver changes for 6.0-rc1
Here is the large set of char and misc and other driver subsystem
 changes for 6.0-rc1.
 
 Highlights include:
 	- large set of IIO driver updates, additions, and cleanups
 	- new habanalabs device support added (loads of register maps
 	  much like GPUs have)
 	- soundwire driver updates
 	- phy driver updates
 	- slimbus driver updates
 	- tiny virt driver fixes and updates
 	- misc driver fixes and updates
 	- interconnect driver updates
 	- hwtracing driver updates
 	- fpga driver updates
 	- extcon driver updates
 	- firmware driver updates
 	- counter driver update
 	- mhi driver fixes and updates
 	- binder driver fixes and updates
 	- speakup driver fixes
 
 Full details are in the long shortlog contents.
 
 All of these have been in linux-next for a while without any reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver updates from Greg KH:
 "Here is the large set of char and misc and other driver subsystem
  changes for 6.0-rc1.

  Highlights include:

   - large set of IIO driver updates, additions, and cleanups

   - new habanalabs device support added (loads of register maps much
     like GPUs have)

   - soundwire driver updates

   - phy driver updates

   - slimbus driver updates

   - tiny virt driver fixes and updates

   - misc driver fixes and updates

   - interconnect driver updates

   - hwtracing driver updates

   - fpga driver updates

   - extcon driver updates

   - firmware driver updates

   - counter driver update

   - mhi driver fixes and updates

   - binder driver fixes and updates

   - speakup driver fixes

  All of these have been in linux-next for a while without any reported
  problems"

* tag 'char-misc-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (634 commits)
  drivers: lkdtm: fix clang -Wformat warning
  char: remove VR41XX related char driver
  misc: Mark MICROCODE_MINOR unused
  spmi: trace: fix stack-out-of-bound access in SPMI tracing functions
  dt-bindings: iio: adc: Add compatible for MT8188
  iio: light: isl29028: Fix the warning in isl29028_remove()
  iio: accel: sca3300: Extend the trigger buffer from 16 to 32 bytes
  iio: fix iio_format_avail_range() printing for none IIO_VAL_INT
  iio: adc: max1027: unlock on error path in max1027_read_single_value()
  iio: proximity: sx9324: add empty line in front of bullet list
  iio: magnetometer: hmc5843: Remove duplicate 'the'
  iio: magn: yas530: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros
  iio: magnetometer: ak8974: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros
  iio: light: veml6030: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros
  iio: light: vcnl4035: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros
  iio: light: vcnl4000: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr() macros
  iio: light: tsl2591: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr()
  iio: light: tsl2583: Use DEFINE_RUNTIME_DEV_PM_OPS and pm_ptr()
  iio: light: isl29028: Use DEFINE_RUNTIME_DEV_PM_OPS() and pm_ptr()
  iio: light: gp2ap002: Switch to DEFINE_RUNTIME_DEV_PM_OPS and pm_ptr()
  ...
2022-08-04 11:05:48 -07:00
Masahiro Yamada 672fb6740c modpost: remove .symbol_white_list field entirely
It is not so useful to have symbol whitelists in arrays. With this
over-engineering, the code is difficult to follow.

Let's do it more directly, and collect the relevant code to one place.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-04 20:32:13 +09:00
Masahiro Yamada 1560cb0e18 modpost: remove unneeded .symbol_white_list initializers
The ->symbol_white_list field is referenced in secref_whitelist(),
only when 'fromsec' is data_sections.

        /* Check for pattern 2 */
        if (match(tosec, init_exit_sections) &&
            match(fromsec, data_sections) &&
            match(fromsym, mismatch->symbol_white_list))
                return 0;

If .fromsec is not data sections, the .symbol_white_list member is
not used by anyone.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-04 20:32:13 +09:00
Masahiro Yamada 7452dd26a5 modpost: add PATTERNS() helper macro
This will be useful to define a NULL-terminated array inside a function
call.

Currently, string arrays passed to match() are defined in separate
places:

    static const char *const init_sections[] = { ALL_INIT_SECTIONS, NULL };
    static const char *const text_sections[] = { ALL_TEXT_SECTIONS, NULL };
    static const char *const optim_symbols[] = { "*.constprop.*", NULL };

            ...

            /* Check for pattern 5 */
            if (match(fromsec, text_sections) &&
                match(tosec, init_sections) &&
                match(fromsym, optim_symbols))
                    return 0;

With the new helper macro, you can list the patterns directly in the
function call, like this:

            /* Check for pattern 5 */
            if (match(fromsec, PATTERNS(ALL_TEXT_SECTIONS)) &&
                match(tosec, PATTERNS(ALL_INIT_SECTIONS)) &&
                match(fromsym, PATTERNS("*.contprop.*")))
                    return 0;

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-04 20:32:13 +09:00
Masahiro Yamada 072dd2c892 modpost: shorten warning messages in report_sec_mismatch()
Each section mismatch results in long warning messages. Too much.

Make each warning fit in one line, and remove a lot of messy code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-04 20:32:13 +09:00
Masahiro Yamada a25efd6ef1 Revert "Kbuild, lto, workaround: Don't warn for initcall_reference in modpost"
This reverts commit 77ab21adae.

Even after 8 years later, GCC LTO has not been upstreamed. Also, it said
"This is a workaround". If this is needed in the future, it should be
added in a proper way.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Jiri Slaby <jirislaby@kernel.org>
2022-08-04 20:27:17 +09:00
Linus Torvalds f86d1fbbe7 Networking changes for 6.0.
Core
 ----
 
  - Refactor the forward memory allocation to better cope with memory
    pressure with many open sockets, moving from a per socket cache to
    a per-CPU one
 
  - Replace rwlocks with RCU for better fairness in ping, raw sockets
    and IP multicast router.
 
  - Network-side support for IO uring zero-copy send.
 
  - A few skb drop reason improvements, including codegen the source file
    with string mapping instead of using macro magic.
 
  - Rename reference tracking helpers to a more consistent
    netdev_* schema.
 
  - Adapt u64_stats_t type to address load/store tearing issues.
 
  - Refine debug helper usage to reduce the log noise caused by bots.
 
 BPF
 ---
  - Improve socket map performance, avoiding skb cloning on read
    operation.
 
  - Add support for 64 bits enum, to match types exposed by kernel.
 
  - Introduce support for sleepable uprobes program.
 
  - Introduce support for enum textual representation in libbpf.
 
  - New helpers to implement synproxy with eBPF/XDP.
 
  - Improve loop performances, inlining indirect calls when
    possible.
 
  - Removed all the deprecated libbpf APIs.
 
  - Implement new eBPF-based LSM flavor.
 
  - Add type match support, which allow accurate queries to the
    eBPF used types.
 
  - A few TCP congetsion control framework usability improvements.
 
  - Add new infrastructure to manipulate CT entries via eBPF programs.
 
  - Allow for livepatch (KLP) and BPF trampolines to attach to the same
    kernel function.
 
 Protocols
 ---------
 
  - Introduce per network namespace lookup tables for unix sockets,
    increasing scalability and reducing contention.
 
  - Preparation work for Wi-Fi 7 Multi-Link Operation (MLO) support.
 
  - Add support to forciby close TIME_WAIT TCP sockets via user-space
    tools.
 
  - Significant performance improvement for the TLS 1.3 receive path,
    both for zero-copy and not-zero-copy.
 
  - Support for changing the initial MTPCP subflow priority/backup
    status
 
  - Introduce virtually contingus buffers for sockets over RDMA,
    to cope better with memory pressure.
 
  - Extend CAN ethtool support with timestamping capabilities
 
  - Refactor CAN build infrastructure to allow building only the needed
    features.
 
 Driver API
 ----------
 
  - Remove devlink mutex to allow parallel commands on multiple links.
 
  - Add support for pause stats in distributed switch.
 
  - Implement devlink helpers to query and flash line cards.
 
  - New helper for phy mode to register conversion.
 
 New hardware / drivers
 ----------------------
 
  - Ethernet DSA driver for the rockchip mt7531 on BPI-R2 Pro.
 
  - Ethernet DSA driver for the Renesas RZ/N1 A5PSW switch.
 
  - Ethernet DSA driver for the Microchip LAN937x switch.
 
  - Ethernet PHY driver for the Aquantia AQR113C EPHY.
 
  - CAN driver for the OBD-II ELM327 interface.
 
  - CAN driver for RZ/N1 SJA1000 CAN controller.
 
  - Bluetooth: Infineon CYW55572 Wi-Fi plus Bluetooth combo device.
 
 Drivers
 -------
 
  - Intel Ethernet NICs:
    - i40e: add support for vlan pruning
    - i40e: add support for XDP framented packets
    - ice: improved vlan offload support
    - ice: add support for PPPoE offload
 
  - Mellanox Ethernet (mlx5)
    - refactor packet steering offload for performance and scalability
    - extend support for TC offload
    - refactor devlink code to clean-up the locking schema
    - support stacked vlans for bridge offloads
    - use TLS objects pool to improve connection rate
 
  - Netronome Ethernet NICs (nfp):
    - extend support for IPv6 fields mangling offload
    - add support for vepa mode in HW bridge
    - better support for virtio data path acceleration (VDPA)
    - enable TSO by default
 
  - Microsoft vNIC driver (mana)
    - add support for XDP redirect
 
  - Others Ethernet drivers:
    - bonding: add per-port priority support
    - microchip lan743x: extend phy support
    - Fungible funeth: support UDP segmentation offload and XDP xmit
    - Solarflare EF100: add support for virtual function representors
    - MediaTek SoC: add XDP support
 
  - Mellanox Ethernet/IB switch (mlxsw):
    - dropped support for unreleased H/W (XM router).
    - improved stats accuracy
    - unified bridge model coversion improving scalability
      (parts 1-6)
    - support for PTP in Spectrum-2 asics
 
  - Broadcom PHYs
    - add PTP support for BCM54210E
    - add support for the BCM53128 internal PHY
 
  - Marvell Ethernet switches (prestera):
    - implement support for multicast forwarding offload
 
  - Embedded Ethernet switches:
    - refactor OcteonTx MAC filter for better scalability
    - improve TC H/W offload for the Felix driver
    - refactor the Microchip ksz8 and ksz9477 drivers to share
      the probe code (parts 1, 2), add support for phylink
      mac configuration
 
  - Other WiFi:
    - Microchip wilc1000: diable WEP support and enable WPA3
    - Atheros ath10k: encapsulation offload support
 
 Old code removal:
 
  - Neterion vxge ethernet driver: this is untouched since more than
    10 years.
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking changes from Paolo Abeni:
 "Core:

   - Refactor the forward memory allocation to better cope with memory
     pressure with many open sockets, moving from a per socket cache to
     a per-CPU one

   - Replace rwlocks with RCU for better fairness in ping, raw sockets
     and IP multicast router.

   - Network-side support for IO uring zero-copy send.

   - A few skb drop reason improvements, including codegen the source
     file with string mapping instead of using macro magic.

   - Rename reference tracking helpers to a more consistent netdev_*
     schema.

   - Adapt u64_stats_t type to address load/store tearing issues.

   - Refine debug helper usage to reduce the log noise caused by bots.

  BPF:

   - Improve socket map performance, avoiding skb cloning on read
     operation.

   - Add support for 64 bits enum, to match types exposed by kernel.

   - Introduce support for sleepable uprobes program.

   - Introduce support for enum textual representation in libbpf.

   - New helpers to implement synproxy with eBPF/XDP.

   - Improve loop performances, inlining indirect calls when possible.

   - Removed all the deprecated libbpf APIs.

   - Implement new eBPF-based LSM flavor.

   - Add type match support, which allow accurate queries to the eBPF
     used types.

   - A few TCP congetsion control framework usability improvements.

   - Add new infrastructure to manipulate CT entries via eBPF programs.

   - Allow for livepatch (KLP) and BPF trampolines to attach to the same
     kernel function.

  Protocols:

   - Introduce per network namespace lookup tables for unix sockets,
     increasing scalability and reducing contention.

   - Preparation work for Wi-Fi 7 Multi-Link Operation (MLO) support.

   - Add support to forciby close TIME_WAIT TCP sockets via user-space
     tools.

   - Significant performance improvement for the TLS 1.3 receive path,
     both for zero-copy and not-zero-copy.

   - Support for changing the initial MTPCP subflow priority/backup
     status

   - Introduce virtually contingus buffers for sockets over RDMA, to
     cope better with memory pressure.

   - Extend CAN ethtool support with timestamping capabilities

   - Refactor CAN build infrastructure to allow building only the needed
     features.

  Driver API:

   - Remove devlink mutex to allow parallel commands on multiple links.

   - Add support for pause stats in distributed switch.

   - Implement devlink helpers to query and flash line cards.

   - New helper for phy mode to register conversion.

  New hardware / drivers:

   - Ethernet DSA driver for the rockchip mt7531 on BPI-R2 Pro.

   - Ethernet DSA driver for the Renesas RZ/N1 A5PSW switch.

   - Ethernet DSA driver for the Microchip LAN937x switch.

   - Ethernet PHY driver for the Aquantia AQR113C EPHY.

   - CAN driver for the OBD-II ELM327 interface.

   - CAN driver for RZ/N1 SJA1000 CAN controller.

   - Bluetooth: Infineon CYW55572 Wi-Fi plus Bluetooth combo device.

  Drivers:

   - Intel Ethernet NICs:
      - i40e: add support for vlan pruning
      - i40e: add support for XDP framented packets
      - ice: improved vlan offload support
      - ice: add support for PPPoE offload

   - Mellanox Ethernet (mlx5)
      - refactor packet steering offload for performance and scalability
      - extend support for TC offload
      - refactor devlink code to clean-up the locking schema
      - support stacked vlans for bridge offloads
      - use TLS objects pool to improve connection rate

   - Netronome Ethernet NICs (nfp):
      - extend support for IPv6 fields mangling offload
      - add support for vepa mode in HW bridge
      - better support for virtio data path acceleration (VDPA)
      - enable TSO by default

   - Microsoft vNIC driver (mana)
      - add support for XDP redirect

   - Others Ethernet drivers:
      - bonding: add per-port priority support
      - microchip lan743x: extend phy support
      - Fungible funeth: support UDP segmentation offload and XDP xmit
      - Solarflare EF100: add support for virtual function representors
      - MediaTek SoC: add XDP support

   - Mellanox Ethernet/IB switch (mlxsw):
      - dropped support for unreleased H/W (XM router).
      - improved stats accuracy
      - unified bridge model coversion improving scalability (parts 1-6)
      - support for PTP in Spectrum-2 asics

   - Broadcom PHYs
      - add PTP support for BCM54210E
      - add support for the BCM53128 internal PHY

   - Marvell Ethernet switches (prestera):
      - implement support for multicast forwarding offload

   - Embedded Ethernet switches:
      - refactor OcteonTx MAC filter for better scalability
      - improve TC H/W offload for the Felix driver
      - refactor the Microchip ksz8 and ksz9477 drivers to share the
        probe code (parts 1, 2), add support for phylink mac
        configuration

   - Other WiFi:
      - Microchip wilc1000: diable WEP support and enable WPA3
      - Atheros ath10k: encapsulation offload support

  Old code removal:

   - Neterion vxge ethernet driver: this is untouched since more than 10 years"

* tag 'net-next-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1890 commits)
  doc: sfp-phylink: Fix a broken reference
  wireguard: selftests: support UML
  wireguard: allowedips: don't corrupt stack when detecting overflow
  wireguard: selftests: update config fragments
  wireguard: ratelimiter: use hrtimer in selftest
  net/mlx5e: xsk: Discard unaligned XSK frames on striding RQ
  net: usb: ax88179_178a: Bind only to vendor-specific interface
  selftests: net: fix IOAM test skip return code
  net: usb: make USB_RTL8153_ECM non user configurable
  net: marvell: prestera: remove reduntant code
  octeontx2-pf: Reduce minimum mtu size to 60
  net: devlink: Fix missing mutex_unlock() call
  net/tls: Remove redundant workqueue flush before destroy
  net: txgbe: Fix an error handling path in txgbe_probe()
  net: dsa: Fix spelling mistakes and cleanup code
  Documentation: devlink: add add devlink-selftests to the table of contents
  dccp: put dccp_qpolicy_full() and dccp_qpolicy_push() in the same lock
  net: ionic: fix error check for vlan flags in ionic_set_nic_features()
  net: ice: fix error NETIF_F_HW_VLAN_CTAG_FILTER check in ice_vsi_sync_fltr()
  nfp: flower: add support for tunnel offload without key ID
  ...
2022-08-03 16:29:08 -07:00
Tianjia Zhang 1a83950270 sign-file: Fix confusing error messages
When an error occurs, use errx() instead of err() to display the
error message, because openssl has its own error record. When an
error occurs, errno will not be changed, while err() displays the
errno error message. It will cause confusion. For example, when
CMS_add1_signer() fails, the following message will appear:

  sign-file: CMS_add1_signer: Success

errx() ignores errno and does not cause such issue.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2022-08-03 23:56:20 +03:00
Masahiro Yamada 5419aa2a8d modpost: use more reliable way to get fromsec in section_rel(a)()
The section name of Rel and Rela starts with ".rel" and ".rela"
respectively (but, I do not know whether this is specification or
convention).

For example, ".rela.text" holds relocation entries applied to the
".text" section.

So, the code chops the ".rel" or ".rela" prefix to get the name of
the section to which the relocation applies.

However, I do not like to skip 4 or 5 bytes blindly because it is
potential memory overrun.

The ELF specification provides a more reliable way to do this.

 - The sh_info field holds extra information, whose interpretation
   depends on the section type

 - If the section type is SHT_REL or SHT_RELA, the sh_info field holds
   the section header index of the section to which the relocation
   applies.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-03 22:58:10 +09:00
Masahiro Yamada 125ed24a4a modpost: add array range check to sec_name()
The section index is always positive, so the argument, secindex, should
be unsigned.

Also, inserted the array range check.

If sym->st_shndx is a special section index (between SHN_LORESERVE and
SHN_HIRESERVE), there is no corresponding section header.

For example, if a symbol specifies an absolute value, sym->st_shndx is
SHN_ABS (=0xfff1).

The current users do not cause the out-of-range access of
info->sechddrs[], but it is better to avoid such a pitfall.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-03 22:58:10 +09:00
Masahiro Yamada 36b0f0deed modpost: refactor get_secindex()
SPECIAL() is only used in get_secindex(). Squash it.

Make the code more readable with more comments.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-03 22:56:46 +09:00
Masahiro Yamada dd29865633 kbuild: set EXIT trap before creating temporary directory
Swap the order of 'mkdir' and 'trap' just in case the subshell is
interrupted between 'mkdir' and 'trap' although the effect might be
subtle.

This does not intend to make the cleanup perfect. There are more cases
that miss to remove the tmp directory, for example:

 - When interrupted, dash does not invoke the EXIT trap (bash does)

 - 'rm' command might be interrupted before removing the directory

I am not addressing all the cases since the tmp directory is harmless
after all.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-08-03 22:56:38 +09:00
Masahiro Yamada 7193cda917 modpost: remove unused Elf_Sword macro
Commit 9ad21c3f3e ("kbuild: try harder to find symbol names in
modpost") added Elf_Sword (in a wrong way), but did not use it at all.

BTW, the current code looks weird.

The fix for the 32-bit part would be:

    Elf64_Sword  -->  Elf32_Sword

(inconsistet prefix, Elf32_ vs Elf64_)

The fix for the 64-bit part would be:

    Elf64_Sxword  -->  Elf64_Sword

(the size is different between Sword and Sxword)

Note:

    Elf32_Sword   ==  Elf64_Sword   ==  int32_t
    Elf32_Sxword  ==  Elf64_Sxword  ==  int64_t

Anyway, let's drop unused code instead of fixing it.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-08-03 19:37:59 +09:00
Justin Stitt 258fafcd06 Makefile.extrawarn: re-enable -Wformat for clang
There's been an ongoing mission to re-enable the -Wformat warning for
Clang. A previous attempt at enabling the warning showed that there were
many instances of this warning throughout the codebase. The sheer amount
of these warnings really polluted builds and thus -Wno-format was added
to _temporarily_ toggle them off.

After many patches the warning has largely been eradicated for x86,
x86_64, arm, and arm64 on a variety of configs. The time to enable the
warning has never been better as it seems for the first time we are
ahead of them and can now solve them as they appear rather than tackling
from a backlog.

As to the root cause of this large backlog of warnings, Clang seems to
pickup on some more nuanced cases of format warnings caused by implicit
integer conversion as well as default argument promotions from
printf-like functions.

Link: https://github.com/ClangBuiltLinux/linux/issues/378
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-08-03 19:37:59 +09:00
Linus Torvalds 665fe72a7d linux-kselftest-kunit-5.20-rc1
This KUnit update for Linux 5.20-rc1 consists of several fixes and an
 important feature to discourage running KUnit tests on production
 systems. Running tests on a production system could leave the system
 in a bad state. This new feature adds:
 
 - adds a new taint type, TAINT_TEST to signal that a test has been run.
   This should discourage people from running these tests on production
   systems, and to make it easier to tell if tests have been run
   accidentally (by loading the wrong configuration, etc.)
 
 - several documentation and tool enhancements and fixes.
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Merge tag 'linux-kselftest-kunit-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull KUnit updates from Shuah Khan:
 "This consists of several fixes and an important feature to discourage
  running KUnit tests on production systems. Running tests on a
  production system could leave the system in a bad state.

  Summary:

   - Add a new taint type, TAINT_TEST to signal that a test has been
     run.

     This should discourage people from running these tests on
     production systems, and to make it easier to tell if tests have
     been run accidentally (by loading the wrong configuration, etc)

   - Several documentation and tool enhancements and fixes"

* tag 'linux-kselftest-kunit-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (29 commits)
  Documentation: KUnit: Fix example with compilation error
  Documentation: kunit: Add CLI args for kunit_tool
  kcsan: test: Add a .kunitconfig to run KCSAN tests
  kunit: executor: Fix a memory leak on failure in kunit_filter_tests
  clk: explicitly disable CONFIG_UML_PCI_OVER_VIRTIO in .kunitconfig
  mmc: sdhci-of-aspeed: test: Use kunit_test_suite() macro
  nitro_enclaves: test: Use kunit_test_suite() macro
  thunderbolt: test: Use kunit_test_suite() macro
  kunit: flatten kunit_suite*** to kunit_suite** in .kunit_test_suites
  kunit: unify module and builtin suite definitions
  selftest: Taint kernel when test module loaded
  module: panic: Taint the kernel when selftest modules load
  Documentation: kunit: fix example run_kunit func to allow spaces in args
  Documentation: kunit: Cleanup run_wrapper, fix x-ref
  kunit: test.h: fix a kernel-doc markup
  kunit: tool: Enable virtio/PCI by default on UML
  kunit: tool: make --kunitconfig repeatable, blindly concat
  kunit: add coverage_uml.config to enable GCOV on UML
  kunit: tool: refactor internal kconfig handling, allow overriding
  kunit: tool: introduce --qemu_args
  ...
2022-08-02 19:34:45 -07:00
Linus Torvalds aad26f55f4 This was a moderately busy cycle for documentation, but nothing all that
earth-shaking:
 
 - More Chinese translations, and an update to the Italian translations.
   The Japanese, Korean, and traditional Chinese translations are
   more-or-less unmaintained at this point, instead.
 
 - Some build-system performance improvements.
 
 - The removal of the archaic submitting-drivers.rst document, with the
   movement of what useful material that remained into other docs.
 
 - Improvements to sphinx-pre-install to, hopefully, give more useful
   suggestions.
 
 - A number of build-warning fixes
 
 Plus the usual collection of typo fixes, updates, and more.
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Merge tag 'docs-6.0' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "This was a moderately busy cycle for documentation, but nothing
  all that earth-shaking:

   - More Chinese translations, and an update to the Italian
     translations.

     The Japanese, Korean, and traditional Chinese translations
     are more-or-less unmaintained at this point, instead.

   - Some build-system performance improvements.

   - The removal of the archaic submitting-drivers.rst document,
     with the movement of what useful material that remained into
     other docs.

   - Improvements to sphinx-pre-install to, hopefully, give more
     useful suggestions.

   - A number of build-warning fixes

  Plus the usual collection of typo fixes, updates, and more"

* tag 'docs-6.0' of git://git.lwn.net/linux: (92 commits)
  docs: efi-stub: Fix paths for x86 / arm stubs
  Docs/zh_CN: Update the translation of sched-stats to 5.19-rc8
  Docs/zh_CN: Update the translation of pci to 5.19-rc8
  Docs/zh_CN: Update the translation of pci-iov-howto to 5.19-rc8
  Docs/zh_CN: Update the translation of usage to 5.19-rc8
  Docs/zh_CN: Update the translation of testing-overview to 5.19-rc8
  Docs/zh_CN: Update the translation of sparse to 5.19-rc8
  Docs/zh_CN: Update the translation of kasan to 5.19-rc8
  Docs/zh_CN: Update the translation of iio_configfs to 5.19-rc8
  doc:it_IT: align Italian documentation
  docs: Remove spurious tag from admin-guide/mm/overcommit-accounting.rst
  Documentation: process: Update email client instructions for Thunderbird
  docs: ABI: correct QEMU fw_cfg spec path
  doc/zh_CN: remove submitting-driver reference from docs
  docs: zh_TW: align to submitting-drivers removal
  docs: zh_CN: align to submitting-drivers removal
  docs: ko_KR: howto: remove reference to removed submitting-drivers
  docs: ja_JP: howto: remove reference to removed submitting-drivers
  docs: it_IT: align to submitting-drivers removal
  docs: process: remove outdated submitting-drivers.rst
  ...
2022-08-02 19:24:24 -07:00
Josh Poimboeuf a41a2e2e34 scripts/faddr2line: Add CONFIG_DEBUG_INFO check
Otherwise without DWARF it spits out gibberish and gives no indication
of what the problem is.

Suggested-by: John Garry <john.garry@huawei.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/ffa7734c929445caa374bf9e68078300174f09b4.1658426357.git.jpoimboe@kernel.org
2022-08-02 22:08:17 +02:00
Josh Poimboeuf b6a5068854 scripts/faddr2line: Fix vmlinux detection on arm64
Since commit dcea997bee ("faddr2line: Fix overlapping text section
failures, the sequel"), faddr2line is completely broken on arm64.

For some reason, on arm64, the vmlinux ELF object file type is ET_DYN
rather than ET_EXEC.  Check for both when determining whether the object
is vmlinux.

Modules and vmlinux.o have type ET_REL on all arches.

Fixes: dcea997bee ("faddr2line: Fix overlapping text section failures, the sequel")
Reported-by: John Garry <john.garry@huawei.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/dad1999737471b06d6188ce4cdb11329aa41682c.1658426357.git.jpoimboe@kernel.org
2022-08-02 22:08:16 +02:00
Slark Xiao 95522f0b18 scripts/tracing: Fix typo 'the the' in comment
Replace 'the the' with 'the' in the comment.

Link: https://lkml.kernel.org/r/20220722102907.81949-1-slark_xiao@163.com

Signed-off-by: Slark Xiao <slark_xiao@163.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-08-02 15:17:00 -04:00
Linus Torvalds 8b7054528c - Fix stack protector builds when cross compiling with Clang
- Other Kbuild improvements and fixes
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Merge tag 'x86_build_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 build updates from Borislav Petkov:

 - Fix stack protector builds when cross compiling with Clang

 - Other Kbuild improvements and fixes

* tag 'x86_build_for_v6.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/purgatory: Omit use of bin2c
  x86/purgatory: Hard-code obj-y in Makefile
  x86/build: Remove unused OBJECT_FILES_NON_STANDARD_test_nx.o
  x86/Kconfig: Fix CONFIG_CC_HAS_SANE_STACKPROTECTOR when cross compiling with clang
2022-08-01 10:14:19 -07:00
Aaron Tomlin b99695580b scripts/gdb: ensure the absolute path is generated on initial source
Post 'make scripts_gdb' a symbolic link to scripts/gdb/vmlinux-gdb.py is
created.  Currently 'os.path.dirname(__file__)' does not generate the
absolute path to scripts/gdb resulting in the following:

    (gdb) source vmlinux-gdb.py
    Traceback (most recent call last):
      File "scripts/gdb/vmlinux-gdb.py", line 25, in <module>
	import linux.utils
    ModuleNotFoundError: No module named 'linux'

This patch ensures that the absolute path to scripts/gdb in relation to
the given file is generated so each module can be located accordingly.

Link: https://lkml.kernel.org/r/20220712110248.1404125-1-atomlin@redhat.com
Signed-off-by: Aaron Tomlin <atomlin@redhat.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-07-29 18:12:37 -07:00
Randy Dunlap 7dea20f2fe kconfig: Qt5: tell the user which packages are required
Along with saying "Please install Qt5 ...", tell exactly which
parts of Qt5 are needed. This is useful when parts of Qt5 are
installed but some of the required pieces are missing, and it
eliminates the need for the user to find the shell script and
the line in it that provide that information.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27 21:18:00 +09:00
Masahiro Yamada abe864b8e1 modpost: use sym_get_data() to get module device_table data
Use sym_get_data() to replace the long code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-07-27 21:18:00 +09:00
Masahiro Yamada 5764f6626f modpost: drop executable ELF support
Since commit 269a535ca9 ("modpost: generate vmlinux.symvers and
reuse it for the second modpost"), modpost only parses relocatable
files (ET_REL).

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-07-27 21:18:00 +09:00
Wadim Mueller 1fd49a0b5c checkstack: add riscv support for scripts/checkstack.pl
scripts/checkstack.pl lacks support for the riscv architecture. Add
support to detect "addi sp,sp,-FRAME_SIZE" stack frame generation instruction

Signed-off-by: Wadim Mueller <wafgo01@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27 21:18:00 +09:00
Masahiro Yamada 10269fd37f kconfig: shorten the temporary directory name for cc-option
The cc-option macro creates the temporary directory, .tmp_$$$$.
Shell expands '$$' into its process ID. '$$$$' results in repeated PID.

In Makefile, '$$$$' is correct (see TMPOUT in scripts/Malefile.compiler)
because '$$' is an escape sequence of '$'. Make expands '$$$$' into '$$',
then shell expands it into the process ID.

This does not apply to Kconfig because Kconfig requires variable
references to be enclosed by curly braces, like ${variable}.
The '$' that is not followed by '{' loses its effect.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Nicolas Schier <nicolas@fjasle.eu>
2022-07-27 21:18:00 +09:00
Nicolas Schier e3b746a384 scripts: headers_install.sh: Update config leak ignore entries
Remove two dated config leak ignore entries from scripts/headers_install.sh:
arch/alpha/include/uapi/asm/setup.h does no more leak any CONFIG_* symbol to
user-space any more since commit 3cb8b1537f ("alpha: Move setup.h out of
uapi").
Same holds for include/uapi/asm-generic/fcntl.h since commit 306f7cc1e9
("uapi: always define F_GETLK64/F_SETLK64/F_SETLKW64 in fcntl.h").

Signed-off-by: Nicolas Schier <nicolas@fjasle.eu>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27 21:18:00 +09:00
Masahiro Yamada 84850dbbbe kbuild: error out if $(INSTALL_MOD_PATH) contains % or :
If the directory path given to INSTALL_MOD_PATH contains % or :,
the module_install fails.

% is used in pattern rules, and : as the separator of dependencies.

Bail out with a clearer error message.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
2022-07-27 21:18:00 +09:00
Masahiro Yamada 6105e4f651 kbuild: rpm-pkg: pass 'linux' to --target option of rpmbuild
Presumably, _target_os is defined even if the --target flag does not
specify it, but it is better to make it explicit.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27 21:18:00 +09:00
Masahiro Yamada 3089b2be0c kbuild: rpm-pkg: fix build error when _arch is undefined
Cross-building (bin)rpm-pkg fails on several architectures.

For example, 'make ARCH=arm binrpm-pkg' fails like follows:

  sh ./scripts/package/mkspec prebuilt > ./binkernel.spec
  rpmbuild  --define "_builddir ." --target \
          arm -bb ./binkernel.spec
  Building target platforms: arm
  Building for target arm
  warning: line 19: It's not recommended to have unversioned Obsoletes: Obsoletes: kernel-headers
  Executing(%install): /bin/sh -e /var/tmp/rpm-tmp.0S8t2F
  + umask 022
  + cd .
  + mkdir -p /home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.%{_arch}/boot
  + make -f ./Makefile image_name
  + cp arch/arm/boot/zImage /home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.%{_arch}/boot/vmlinuz-5.19.0-rc6
  + make -f ./Makefile INSTALL_MOD_PATH=/home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.%{_arch} modules_install
  make[3]: *** No rule to make target '/home/masahiro/rpmbuild/BUILDROOT/kernel-5.19.0_rc6-19.arch/arm/crypto/aes-arm-bs.ko{_arch}/lib/modules/5.19.0-rc6/kernel/%', needed by '__modinst'.  Stop.
  make[2]: *** [Makefile:1768: modules_install] Error 2
  error: Bad exit status from /var/tmp/rpm-tmp.0S8t2F (%install)

By default, 'buildroot' contains %{_arch} (see /usr/lib/rpm/macros).

_arch is generally defined in /usr/lib/rpm/platforms/*/macros, where
the platform sub-directory is specified by --target= option for cross
builds.

If the given arch does not exist, %{_arch} is not expanded.
In the example above, --target=arm is passed to rpmbuild, but
/usr/lib/rpm/platforms/arm-linux/ does not exist.

The '%' character in the path confuses GNU make and rpmbuild.

The same occurs for such architectures as csky, microblaze, nios2, etc.

Define _arch if it has not been defined.

Reported-by: Jason Self <jason@bluehome.net>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27 21:18:00 +09:00
Ondrej Mosnacek aac289653f kbuild: dummy-tools: avoid tmpdir leak in dummy gcc
When passed -print-file-name=plugin, the dummy gcc script creates a
temporary directory that is never cleaned up. To avoid cluttering
$TMPDIR, instead use a static directory included in the source tree.

Fixes: 76426e2388 ("kbuild: add dummy toolchains to enable all cc-option etc. in Kconfig")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-07-27 21:17:59 +09:00
Masahiro Yamada 028062ec22 Revert "scripts/mod/modpost.c: permit '.cranges' secton for sh64 architecture."
This reverts commit 4d10c223ba.

Commit 37744feebc ("sh: remove sh5 support") removed the sh64 support
entirely.

Note:
.cranges was only used for sh64 ever.
Commit 211dc24b8744 ("Remove sh5 and sh64 support") in binutils-gdb
already removed the relevant code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-07-27 21:17:59 +09:00
Masahiro Yamada 5439d4d4dc kbuild: remove sed command from cmd_ar_builtin
Replace a pipeline of echo and sed with printf to decrease process forks.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-07-27 21:17:59 +09:00
Masahiro Yamada 9008a67666 certs: move scripts/check-blacklist-hashes.awk to certs/
This script is only used in certs/Makefile, so certs/ is a better
home for it.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Mickaël Salaün <mic@linux.microsoft.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
2022-07-27 21:17:59 +09:00
Masahiro Yamada 9257971377 powerpc/purgatory: Omit use of bin2c
The .incbin assembler directive is much faster than bin2c + $(CC).

Do similar refactoring as in commit 4c0f032d49 ("s390/purgatory:
Omit use of bin2c").

Please note the .quad directive matches to size_t in C (both 8 byte)
because the purgatory is compiled only for the 64-bit kernel.
(KEXEC_FILE depends on PPC64).

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220725015619.618070-1-masahiroy@kernel.org
2022-07-27 21:36:03 +10:00
Masahiro Yamada 2d17bd24b0 x86/purgatory: Omit use of bin2c
The .incbin assembler directive is much faster than bin2c + $(CC).

Do similar refactoring as in

  4c0f032d49 ("s390/purgatory: Omit use of bin2c").

Please note the .quad directive matches to size_t in C (both 8
byte) because the purgatory is compiled only for the 64-bit kernel.
(KEXEC_FILE depends on X86_64).

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220725020812.622255-2-masahiroy@kernel.org
2022-07-25 10:32:32 +02:00
Jakub Kicinski b3fce974d4 Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
bpf-next 2022-07-22

We've added 73 non-merge commits during the last 12 day(s) which contain
a total of 88 files changed, 3458 insertions(+), 860 deletions(-).

The main changes are:

1) Implement BPF trampoline for arm64 JIT, from Xu Kuohai.

2) Add ksyscall/kretsyscall section support to libbpf to simplify tracing kernel
   syscalls through kprobe mechanism, from Andrii Nakryiko.

3) Allow for livepatch (KLP) and BPF trampolines to attach to the same kernel
   function, from Song Liu & Jiri Olsa.

4) Add new kfunc infrastructure for netfilter's CT e.g. to insert and change
   entries, from Kumar Kartikeya Dwivedi & Lorenzo Bianconi.

5) Add a ksym BPF iterator to allow for more flexible and efficient interactions
   with kernel symbols, from Alan Maguire.

6) Bug fixes in libbpf e.g. for uprobe binary path resolution, from Dan Carpenter.

7) Fix BPF subprog function names in stack traces, from Alexei Starovoitov.

8) libbpf support for writing custom perf event readers, from Jon Doron.

9) Switch to use SPDX tag for BPF helper man page, from Alejandro Colomar.

10) Fix xsk send-only sockets when in busy poll mode, from Maciej Fijalkowski.

11) Reparent BPF maps and their charging on memcg offlining, from Roman Gushchin.

12) Multiple follow-up fixes around BPF lsm cgroup infra, from Stanislav Fomichev.

13) Use bootstrap version of bpftool where possible to speed up builds, from Pu Lehui.

14) Cleanup BPF verifier's check_func_arg() handling, from Joanne Koong.

15) Make non-prealloced BPF map allocations low priority to play better with
    memcg limits, from Yafang Shao.

16) Fix BPF test runner to reject zero-length data for skbs, from Zhengchao Shao.

17) Various smaller cleanups and improvements all over the place.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (73 commits)
  bpf: Simplify bpf_prog_pack_[size|mask]
  bpf: Support bpf_trampoline on functions with IPMODIFY (e.g. livepatch)
  bpf, x64: Allow to use caller address from stack
  ftrace: Allow IPMODIFY and DIRECT ops on the same function
  ftrace: Add modify_ftrace_direct_multi_nolock
  bpf/selftests: Fix couldn't retrieve pinned program in xdp veth test
  bpf: Fix build error in case of !CONFIG_DEBUG_INFO_BTF
  selftests/bpf: Fix test_verifier failed test in unprivileged mode
  selftests/bpf: Add negative tests for new nf_conntrack kfuncs
  selftests/bpf: Add tests for new nf_conntrack kfuncs
  selftests/bpf: Add verifier tests for trusted kfunc args
  net: netfilter: Add kfuncs to set and change CT status
  net: netfilter: Add kfuncs to set and change CT timeout
  net: netfilter: Add kfuncs to allocate and insert CT
  net: netfilter: Deduplicate code in bpf_{xdp,skb}_ct_lookup
  bpf: Add documentation for kfuncs
  bpf: Add support for forcing kfunc args to be trusted
  bpf: Switch to new kfunc flags infrastructure
  tools/resolve_btfids: Add support for 8-byte BTF sets
  bpf: Introduce 8-byte BTF set
  ...
====================

Link: https://lore.kernel.org/r/20220722221218.29943-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-22 16:55:44 -07:00
Alejandro Colomar 5cb62b7598 bpf, docs: Use SPDX license identifier in bpf_doc.py
The Linux man-pages project now uses SPDX tags, instead of the full
license text.

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://www.kernel.org/doc/man-pages/licenses.html
Link: https://spdx.org/licenses/Linux-man-pages-copyleft.html
Link: https://lore.kernel.org/bpf/20220721110821.8240-1-alx.manpages@gmail.com
2022-07-22 00:28:14 +02:00
Jakub Kicinski 6e0e846ee2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-21 13:03:39 -07:00
Khalid Masum 23a67619bc scripts/gdb: Fix gdb 'lx-symbols' command
Currently the command 'lx-symbols' in gdb exits with the error`Function
"do_init_module" not defined in "kernel/module.c"`. This occurs because
the file kernel/module.c was moved to kernel/module/main.c.

Fix this breakage by changing the path to "kernel/module/main.c" in
LoadModuleBreakpoint.

Signed-off-by: Khalid Masum <khalid.masum.92@gmail.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Fixes: cfc1d27789 ("module: Move all into module/")
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-07-21 10:40:55 -07:00
Antonio Borneo e3c8d33e0d scripts/gdb: fix 'lx-dmesg' on 32 bits arch
The type atomic_long_t can have size 4 or 8 bytes, depending on
CONFIG_64BIT; it's only content, the field 'counter', is either an
int or a s64 value.

Current code incorrectly uses the fixed size utils.read_u64() to
read the field 'counter' inside atomic_long_t.

On 32 bits architectures reading the last element 'tail_id' of the
struct prb_desc_ring:
	struct prb_desc_ring {
		...
		atomic_long_t tail_id;
	};
causes the utils.read_u64() to access outside the boundary of the
struct and the gdb command 'lx-dmesg' exits with error:
	Python Exception <class 'IndexError'>: index out of range
	Error occurred in Python: index out of range

Query the really used atomic_long_t counter type size.

Link: https://lore.kernel.org/r/20220617143758.137307-1-antonio.borneo@foss.st.com
Fixes: e60768311a ("scripts/gdb: update for lockless printk ringbuffer")
Signed-off-by: Antonio Borneo <antonio.borneo@foss.st.com>
[pmladek@suse.com: Query the really used atomic_long_t counter type size]
Tested-by: Antonio Borneo <antonio.borneo@foss.st.com>
Reviewed-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220719122831.19890-1-pmladek@suse.com
2022-07-21 15:32:52 +02:00
Nikolay Borisov 8b5db66798 scripts/bloat-o-meter: add -p argument
When doing cross platform development on a machine sometimes it might be
useful to invoke bloat-o-meter for files which haven't been build with the
native toolchain.  In cases when the host nm doesn't support the target
one then a toolchain-specific nm could be used.  Add this ability by
adding the -p allowing invocations as:

./scripts/bloat-o-meter -p riscv64-unknown-linux-gnu- file1.o file2.o

Link: https://lkml.kernel.org/r/20220701113513.1938008-2-nborisov@suse.com
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-07-17 17:31:40 -07:00
Nikolay Borisov b62eb2731e scripts/bloat-o-meter: switch argument parsing to using argparse
This will facilitate further extension to the arguments the script takes. 
As an added benefit it also produces saner usage output, where mutual
exclusivity of the c|d|t parameters is clearly visible:

./scripts/bloat-o-meter  -h
usage: bloat-o-meter [-h] [-c | -d | -t] file1 file2

Simple script used to compare the symbol sizes of 2 object files

positional arguments:
  file1       First file to compare
  file2       Second file to compare

optional arguments:
  -h, --help  show this help message and exit
  -c          categorize output based on symbol type
  -d          Show delta of Data Section
  -t          Show delta of text Section

Link: https://lkml.kernel.org/r/20220701113513.1938008-1-nborisov@suse.com
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-07-17 17:31:40 -07:00
Ziyang Xuan bbd5c96850 scripts/coccinelle/free: add NULL test before dev_{put, hold} functions
Since commit b37a466837 ("netdevice: add the case if dev is NULL"),
NULL check before dev_{put, hold} functions is not needed.

Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
2022-07-16 15:33:55 +02:00
Steven Rostedt (Google) 8e54fe1b0f coccinelle: Remove script that checks replacing 0/1 with false/true in functions returning bool
There is nothing wrong with current code that returns 0 or 1 for a
function returning bool. It is perfectly acceptable by the C standard.

To avoid churn of unwanted patches that are constantly sent to maintainers
who do not care about this change, remove the script that flags it as an
issue. This issue is not worth the burden on maintainers to accept
useless patches.

Link: https://lore.kernel.org/all/20220705073822.7276-1-jiapeng.chong@linux.alibaba.com/
Link: https://lore.kernel.org/all/20220429075201.68581-1-jiapeng.chong@linux.alibaba.com/
Link: https://lore.kernel.org/all/1649236467-29390-1-git-send-email-baihaowen@meizu.com/
Link: https://lore.kernel.org/all/20220317014740.3138-1-jiapeng.chong@linux.alibaba.com/
Link: https://lore.kernel.org/all/190b5c2f2f2fb9cc775fce8daed72bf893be48a4.1642065293.git.davidcomponentone@gmail.com/
Link: https://lore.kernel.org/all/20211214113845.439392-1-deng.changcheng@zte.com.cn/
Link: https://lore.kernel.org/all/20210824065735.60660-1-deng.changcheng@zte.com.cn/
Link: https://lore.kernel.org/all/20210824064305.60081-1-deng.changcheng@zte.com.cn/
Link: https://lore.kernel.org/all/20210824062359.59474-1-deng.changcheng@zte.com.cn/

Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2022-07-16 15:31:33 +02:00
Jakub Kicinski 816cd16883 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
include/net/sock.h
  310731e2f1 ("net: Fix data-races around sysctl_mem.")
  e70f3c7012 ("Revert "net: set SK_MEM_QUANTUM to 4096"")
https://lore.kernel.org/all/20220711120211.7c8b7cba@canb.auug.org.au/

net/ipv4/fib_semantics.c
  747c143072 ("ip: fix dflt addr selection for connected nexthop")
  d62607c3fe ("net: rename reference+tracking helpers")

net/tls/tls.h
include/net/tls.h
  3d8c51b25a ("net/tls: Check for errors in tls_device_init")
  5879031423 ("tls: create an internal header")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-14 15:27:35 -07:00
Linus Torvalds ce114c8668 Just when you thought that all the speculation bugs were addressed and
solved and the nightmare is complete, here's the next one: speculating
 after RET instructions and leaking privileged information using the now
 pretty much classical covert channels.
 
 It is called RETBleed and the mitigation effort and controlling
 functionality has been modelled similar to what already existing
 mitigations provide.
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Merge tag 'x86_bugs_retbleed' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 retbleed fixes from Borislav Petkov:
 "Just when you thought that all the speculation bugs were addressed and
  solved and the nightmare is complete, here's the next one: speculating
  after RET instructions and leaking privileged information using the
  now pretty much classical covert channels.

  It is called RETBleed and the mitigation effort and controlling
  functionality has been modelled similar to what already existing
  mitigations provide"

* tag 'x86_bugs_retbleed' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
  x86/speculation: Disable RRSBA behavior
  x86/kexec: Disable RET on kexec
  x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported
  x86/entry: Move PUSH_AND_CLEAR_REGS() back into error_entry
  x86/bugs: Add Cannon lake to RETBleed affected CPU list
  x86/retbleed: Add fine grained Kconfig knobs
  x86/cpu/amd: Enumerate BTC_NO
  x86/common: Stamp out the stepping madness
  KVM: VMX: Prevent RSB underflow before vmenter
  x86/speculation: Fill RSB on vmexit for IBRS
  KVM: VMX: Fix IBRS handling after vmexit
  KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS
  KVM: VMX: Convert launched argument to flags
  KVM: VMX: Flatten __vmx_vcpu_run()
  objtool: Re-add UNWIND_HINT_{SAVE_RESTORE}
  x86/speculation: Remove x86_spec_ctrl_mask
  x86/speculation: Use cached host SPEC_CTRL value for guest entry/exit
  x86/speculation: Fix SPEC_CTRL write on SMT state change
  x86/speculation: Fix firmware entry SPEC_CTRL handling
  x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n
  ...
2022-07-11 18:15:25 -07:00
David Gow 74829ddf59 module: panic: Taint the kernel when selftest modules load
Taint the kernel with TAINT_TEST whenever a test module loads, by adding
a new "TEST" module property, and setting it for all modules in the
tools/testing directory. This property can also be set manually, for
tests which live outside the tools/testing directory with:
MODULE_INFO(test, "Y");

Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Aaron Tomlin <atomlin@redhat.com>
Acked-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-07-11 16:58:00 -06:00
Helge Deller 87c482bdfa modules: Ensure natural alignment for .altinstructions and __bug_table sections
In the kernel image vmlinux.lds.S linker scripts the .altinstructions
and __bug_table sections are 4- or 8-byte aligned because they hold 32-
and/or 64-bit values.

Most architectures use altinstructions and BUG() or WARN() in modules as
well, but in the module linker script (module.lds.S) those sections are
currently missing. As consequence the linker will store their content
byte-aligned by default, which then can lead to unnecessary unaligned
memory accesses by the CPU when those tables are processed at runtime.

Usually unaligned memory accesses are unnoticed, because either the
hardware (as on x86 CPUs) or in-kernel exception handlers (e.g. on
parisc or sparc) emulate and fix them up at runtime. Nevertheless, such
unaligned accesses introduce a performance penalty and can even crash
the kernel if there is a bug in the unalignment exception handlers
(which happened once to me on the parisc architecture and which is why I
noticed that issue at all).

This patch fixes a non-critical issue and might be backported at any time.
It's trivial and shouldn't introduce any regression because it simply
tells the linker to use a different (8-byte alignment) for those
sections by default.

Signed-off-by: Helge Deller <deller@gmx.de>
Link: https://lore.kernel.org/all/Yr8%2Fgr8e8I7tVX4d@p100/
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
2022-07-11 10:49:14 -07:00
Greg Kroah-Hartman 14facbc187 Merge 5.19-rc6 into char-misc-next
We need the misc driver fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-11 08:32:58 +02:00
Masahiro Yamada f5a4618587 kbuild: remove unused cmd_none in scripts/Makefile.modinst
Commit 65ce9c3832 ("kbuild: move module strip/compression code into
scripts/Makefile.modinst") added this unused code.

Perhaps, I thought cmd_none was useful for CONFIG_MODULE_COMPRESS_NONE,
but I did not use it after all.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-07-10 21:25:15 +09:00
Mauro Carvalho Chehab 02bba8ca90 scripts: sphinx-pre-install: place a warning for Sphinx >= 3.0
Newer versions of Sphinx have a known bug:
	https://github.com/sphinx-doc/sphinx/pull/8313

Those currently produces 11 false-positive warnings On Sphinx
version 3.1+.

While Sphinx fix is not applied, let's warn adventurers that would
be using Sphinx installed via distro packages.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/085e0ada65c11da9303d07e70c510dc45f21315b.1656756450.git.mchehab@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-07-07 12:47:34 -06:00
Mauro Carvalho Chehab 6a5d7320fb scripts: sphinx-pre-install: provide both venv and package installs
As it is not a consensus about installing sphinx using venv, and
modern distributions are now shipping with Sphinx versions above
the minimal requirements to build the docs, provide both venv
and package install commands by default.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/7c99d985df204c73e3daafd5fd2f30a31269405d.1656756450.git.mchehab@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-07-07 12:47:34 -06:00
Mauro Carvalho Chehab 5b27d2551c scripts: sphinx-pre-install: check for PDF min version later on
Better to add the PDF note late for venv recommendation.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/8e117aabe6dfa1b1ec92dccd20e801393c977667.1656756450.git.mchehab@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-07-07 12:47:34 -06:00
Mauro Carvalho Chehab ed2133b7b5 scripts: sphinx-pre-install: report broken venv
After distro upgrades, the directory names for python may change.
On such case, the previously-created venv will be broken, and
sphinx-build won't run.

Add a logic to report it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/f117f03555b0636d2be0b68f3a23b1d3f03ccf1d.1656756450.git.mchehab@kernel.org
[jc: fixed typo in warning message]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-07-07 12:47:10 -06:00
Mauro Carvalho Chehab 7c2d45a347 scripts: sphinx-pre-install: fix venv version check logic
The logic which checks if the venv version is good enough
but was not activated is broken: it is checking against
the wrong val, making it to recommend to re-create a venv
every time. Fix it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/afe01b7863fd655986d84ace8948f3d7aede796d.1656756450.git.mchehab@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-07-07 12:45:32 -06:00
Jérémy LEFAURE 3885731869 coccinelle: Extend address test from ifaddr semantic patch to test expressions
The test of an expression's address does not necessarily represent the
whole condition, it may only be a part of it. Also, an expression's
address is likely to be non-zero in every test expression, not only in
if statements.

This change aims at detecting an address test in more complex conditions
and not only in if statements.

Signed-off-by: Jérémy Lefaure <jeremy.lefaure@netatmo.com>
Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
2022-07-03 23:45:05 +02:00
Vipin Sharma d60be533a0 scripts/tags.sh: Include tools directory in tags generation
Add tools directory in generating tags and quiet the "No such file or
directory" warnings.

It reverts the changes introduced in commit 162343a876
("scripts/tags.sh: exclude tools directory from tags generation") while
maintainig the original intent of the patch to get rid of the warnings.
This allows the root level cscope files to include tools source code
besides kernel and a single place to browse the code for both.

Acked-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Signed-off-by: Vipin Sharma <vipinsh@google.com>
Link: https://lore.kernel.org/r/20220618005457.2379324-1-vipinsh@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-01 10:32:30 +02:00
Jakub Kicinski 0d8730f07c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c
  9c5de246c1 ("net: sparx5: mdb add/del handle non-sparx5 devices")
  fbb89d02e3 ("net: sparx5: Allow mdb entries to both CPU and ports")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-30 16:31:00 -07:00
David Reaver 2bc6430884 scripts: get_feat.pl: use /usr/bin/env to find perl
I tried running `make pdfdocs` on NixOS, but it failed because
get_feat.pl uses a shebang line with /usr/bin/perl, and that file path
doesn't exist on NixOS. Using the more portable /usr/bin/env perl fixes
the problem.

Signed-off-by: David Reaver <me@davidreaver.com>
Link: https://lore.kernel.org/r/20220625211548.1200198-1-me@davidreaver.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-06-30 12:22:17 -06:00
Peter Zijlstra f43b9876e8 x86/retbleed: Add fine grained Kconfig knobs
Do fine-grained Kconfig for all the various retbleed parts.

NOTE: if your compiler doesn't support return thunks this will
silently 'upgrade' your mitigation to IBPB, you might not like this.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
2022-06-29 17:43:41 +02:00
John Hubbard a4ab14e1d8 gen_compile_commands: handle multiple lines per .mod file
scripts/clang-tools/gen_compile_commands.py incorrectly assumes that
each .mod file only contains one line. That assumption was correct when
the script was originally created, but commit 9413e76405 ("kbuild:
split the second line of *.mod into *.usyms") changed the .mod file
format so that there is one entry per line, and potentially many lines.

The problem can be reproduced by using Kbuild to generate
compile_commands.json, like this:

    make CC=clang compile_commands.json

In many cases, the problem might be overlooked because many subsystems
only have one line anyway. However, in some subsystems (Nouveau, with
762 entries, is a notable example) it results in skipping most of the
subsystem.

Fix this by fully processing each .mod file.

Fixes: 9413e76405 ("kbuild: split the second line of *.mod into *.usyms")
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-29 11:43:13 +09:00
akpm ee56c3e8ee Merge branch 'master' into mm-nonmm-stable 2022-06-27 10:31:44 -07:00
Peter Zijlstra a09a6e2399 objtool: Add entry UNRET validation
Since entry asm is tricky, add a validation pass that ensures the
retbleed mitigation has been done before the first actual RET
instruction.

Entry points are those that either have UNWIND_HINT_ENTRY, which acts
as UNWIND_HINT_EMPTY but marks the instruction as an entry point, or
those that have UWIND_HINT_IRET_REGS at +0.

This is basically a variant of validate_branch() that is
intra-function and it will simply follow all branches from marked
entry points and ensures that all paths lead to ANNOTATE_UNRET_END.

If a path hits RET or an indirection the path is a fail and will be
reported.

There are 3 ANNOTATE_UNRET_END instances:

 - UNTRAIN_RET itself
 - exception from-kernel; this path doesn't need UNTRAIN_RET
 - all early exceptions; these also don't need UNTRAIN_RET

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
2022-06-27 10:34:00 +02:00
Sami Tolvanen ff13976676 kbuild: Ignore __this_module in gen_autoksyms.sh
Module object files can contain an undefined reference to __this_module,
which isn't resolved until we link the final .ko. The kernel doesn't
export this symbol, so ignore it in gen_autoksyms.sh.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Steve Muckle <smuckle@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Ramji Jiyani <ramjiyani@google.com>
2022-06-26 06:15:05 +09:00
Jakub Kicinski 93817be8b6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-23 12:33:24 -07:00
Masahiro Yamada 28438794ab modpost: fix section mismatch check for exported init/exit sections
Since commit f02e8a6596 ("module: Sort exported symbols"),
EXPORT_SYMBOL* is placed in the individual section ___ksymtab(_gpl)+<sym>
(3 leading underscores instead of 2).

Since then, modpost cannot detect the bad combination of EXPORT_SYMBOL
and __init/__exit.

Fix the .fromsec field.

Fixes: f02e8a6596 ("module: Sort exported symbols")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-06-20 08:18:03 +09:00
Linus Torvalds 5d770f11a1 Build tool updates:
- Remove obsolete CONFIG_X86_SMAP reference from objtool
 
  - Fix overlapping text section failures in faddr2line for real
 
  - Remove OBJECT_FILES_NON_STANDARD usage from x86 ftrace and replace it
    with finegrained annotations so objtool can validate that code
    correctly.
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Merge tag 'objtool-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull build tooling updates from Thomas Gleixner:

 - Remove obsolete CONFIG_X86_SMAP reference from objtool

 - Fix overlapping text section failures in faddr2line for real

 - Remove OBJECT_FILES_NON_STANDARD usage from x86 ftrace and replace it
   with finegrained annotations so objtool can validate that code
   correctly.

* tag 'objtool-urgent-2022-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ftrace: Remove OBJECT_FILES_NON_STANDARD usage
  faddr2line: Fix overlapping text section failures, the sequel
  objtool: Fix obsolete reference to CONFIG_X86_SMAP
2022-06-19 09:54:16 -05:00
Jakub Kicinski 9fb424c4c2 Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
pull-request: bpf-next 2022-06-17

We've added 72 non-merge commits during the last 15 day(s) which contain
a total of 92 files changed, 4582 insertions(+), 834 deletions(-).

The main changes are:

1) Add 64 bit enum value support to BTF, from Yonghong Song.

2) Implement support for sleepable BPF uprobe programs, from Delyan Kratunov.

3) Add new BPF helpers to issue and check TCP SYN cookies without binding to a
   socket especially useful in synproxy scenarios, from Maxim Mikityanskiy.

4) Fix libbpf's internal USDT address translation logic for shared libraries as
   well as uprobe's symbol file offset calculation, from Andrii Nakryiko.

5) Extend libbpf to provide an API for textual representation of the various
   map/prog/attach/link types and use it in bpftool, from Daniel Müller.

6) Provide BTF line info for RV64 and RV32 JITs, and fix a put_user bug in the
   core seen in 32 bit when storing BPF function addresses, from Pu Lehui.

7) Fix libbpf's BTF pointer size guessing by adding a list of various aliases
   for 'long' types, from Douglas Raillard.

8) Fix bpftool to readd setting rlimit since probing for memcg-based accounting
   has been unreliable and caused a regression on COS, from Quentin Monnet.

9) Fix UAF in BPF cgroup's effective program computation triggered upon BPF link
   detachment, from Tadeusz Struk.

10) Fix bpftool build bootstrapping during cross compilation which was pointing
    to the wrong AR process, from Shahab Vahedi.

11) Fix logic bug in libbpf's is_pow_of_2 implementation, from Yuze Chi.

12) BPF hash map optimization to avoid grabbing spinlocks of all CPUs when there
    is no free element. Also add a benchmark as reproducer, from Feng Zhou.

13) Fix bpftool's codegen to bail out when there's no BTF, from Michael Mullin.

14) Various minor cleanup and improvements all over the place.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (72 commits)
  bpf: Fix bpf_skc_lookup comment wrt. return type
  bpf: Fix non-static bpf_func_proto struct definitions
  selftests/bpf: Don't force lld on non-x86 architectures
  selftests/bpf: Add selftests for raw syncookie helpers in TC mode
  bpf: Allow the new syncookie helpers to work with SKBs
  selftests/bpf: Add selftests for raw syncookie helpers
  bpf: Add helpers to issue and check SYN cookies in XDP
  bpf: Allow helpers to accept pointers with a fixed size
  bpf: Fix documentation of th_len in bpf_tcp_{gen,check}_syncookie
  selftests/bpf: add tests for sleepable (uk)probes
  libbpf: add support for sleepable uprobe programs
  bpf: allow sleepable uprobe programs to attach
  bpf: implement sleepable uprobes by chaining gps
  bpf: move bpf_prog to bpf.h
  libbpf: Fix internal USDT address translation logic for shared libraries
  samples/bpf: Check detach prog exist or not in xdp_fwd
  selftests/bpf: Avoid skipping certain subtests
  selftests/bpf: Fix test_varlen verification failure with latest llvm
  bpftool: Do not check return value from libbpf_set_strict_mode()
  Revert "bpftool: Use libbpf 1.0 API mode instead of RLIMIT_MEMLOCK"
  ...
====================

Link: https://lore.kernel.org/r/20220617220836.7373-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-17 19:35:19 -07:00
Maxim Mikityanskiy 33bf988504 bpf: Add helpers to issue and check SYN cookies in XDP
The new helpers bpf_tcp_raw_{gen,check}_syncookie_ipv{4,6} allow an XDP
program to generate SYN cookies in response to TCP SYN packets and to
check those cookies upon receiving the first ACK packet (the final
packet of the TCP handshake).

Unlike bpf_tcp_{gen,check}_syncookie these new helpers don't need a
listening socket on the local machine, which allows to use them together
with synproxy to accelerate SYN cookie generation.

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20220615134847.3753567-4-maximmi@nvidia.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-06-16 21:20:30 -07:00
Antonio Borneo f858e23a29 checkpatch: fix incorrect camelcase detection on numeric constant
The code fragment below

	int foo(int *array, int index)
	{
		return array[index & 0xFF];
	}

triggers an incorrect camelcase detection by checking a substring of the
hex constant:

	CHECK: Avoid CamelCase: <xFF>
	#3: FILE: test.c:3:
	+	return array[index & 0xFF];

This is caused by passing the whole string "array[index & 0xFF]" to the
inner loop that iterates over a "$Ident" match.  The numeric constant is
not a $Ident as it doesn't start with [A-Za-z_] and should be excluded
from the match.

Similar issue can be detected with other constants like "1uL", "0xffffU".

Force the match to start at word boundary so the $Ident will be properly
checked starting from its first char and the constants will be
filtered-out.

Link: https://lkml.kernel.org/r/20220613100055.77821-1-borneo.antonio@gmail.com
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Cc: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-06-16 19:58:22 -07:00
Joe Perches dcea796476 checkpatch: add XA_STATE and XA_STATE_ORDER to the macro declaration list
XA_STATE() and XA_STATE_ORDER macro uses are declarations.

Add them to the declaration macro list to avoid suggesting a blank line
after declarations when used.

Link: https://lkml.kernel.org/r/144314f4bf2c58cf2336028a75a5127e848abd81.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: David Howells <dhowells@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-06-16 19:58:19 -07:00
Niklas Söderlund df4bf98ec2 scripts: kernel-doc: Always increment warnings counter
Some warnings do not increment the warnings counter making the behavior
of running kernel-doc with -Werror unlogical as some warnings will be
generated but not treated as errors.

Fix this by creating a helper function that always incrementing the
warnings counter every time a warning is emitted. There is one location
in get_sphinx_version() where a warning is not touched as it concerns
the execution environment of the kernel-doc and not the documentation
being processed.

Incrementing the counter only have effect when running kernel-doc in
either verbose mode (-v or environment variable KBUILD_VERBOSE) or when
treating warnings as errors (-Werror or environment variable
KDOC_WERROR). In both cases the number of warnings printed is printed to
stderr and for the later the exit code of kernel-doc is non-zero if
warnings where encountered.

Simple test case to demo one of the warnings,

    $ cat test.c
    /**
     * foo() - Description
     */
    int bar();

    # Without this change
    $ ./scripts/kernel-doc -Werror -none test.c
    test.c:4: warning: expecting prototype for foo(). Prototype was for
    bar() instead

    # With this change
    $ ./scripts/kernel-doc -Werror -none test.c
    test.c:4: warning: expecting prototype for foo(). Prototype was for
    bar() instead
    1 warnings as Errors

Signed-off-by: Niklas Söderlund <niklas.soderlund@corigine.com>
Link: https://lore.kernel.org/r/20220613090510.3088294-1-niklas.soderlund@corigine.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-06-13 11:07:45 -06:00
Linus Torvalds e3b8e2de19 Kbuild fixes for v5.19
- Make the *.mod build rule portable for POSIX awk
 
  - Fix regression of 'make nsdeps'
 
  - Make scripts/check-local-export working for older bash versions
 
  - Fix scripts/gdb to extract the .config data from vmlinux
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Merge tag 'kbuild-fixes-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Make the *.mod build rule portable for POSIX awk

 - Fix regression of 'make nsdeps'

 - Make scripts/check-local-export working for older bash versions

 - Fix scripts/gdb to extract the .config data from vmlinux

* tag 'kbuild-fixes-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  scripts/gdb: change kernel config dumping method
  scripts/check-local-export: avoid 'wait $!' for process substitution
  scripts/nsdeps: adjust to the format change of *.mod files
  kbuild: avoid regex RS for POSIX awk
2022-06-12 11:10:07 -07:00
Kuan-Ying Lee 1f7a6cf6b0 scripts/gdb: change kernel config dumping method
MAGIC_START("IKCFG_ST") and MAGIC_END("IKCFG_ED") are moved out
from the kernel_config_data variable.

Thus, we parse kernel_config_data directly instead of considering
offset of MAGIC_START and MAGIC_END.

Fixes: 13610aa908 ("kernel/configs: use .incbin directive to embed config_data.gz")
Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-11 18:31:53 +09:00
Thomas Gleixner fa82cce7a6 treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_385.RULE
Based on the normalized pattern:

    licensed under the gpl v2

extracted by the scancode license scanner the SPDX license identifier

    GPL-2.0-only

has been chosen to replace the boilerplate/reference.

Reviewed-by: Allison Randal <allison@lohutok.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-10 14:51:36 +02:00
Masahiro Yamada da4288b95b scripts/check-local-export: avoid 'wait $!' for process substitution
Bash 4.4, released in 2016, supports 'wait $!' to check the exit status
of a process substitution, but it seems too new.

Some people using older bash versions (on CentOS 7, Ubuntu 16.04, etc.)
reported an error like this:

  ./scripts/check-local-export: line 54: wait: pid 17328 is not a child of this shell

I used the process substitution to avoid a pipeline, which executes each
command in a subshell. If the while-loop is executed in the subshell
context, variable changes within are lost after the subshell terminates.

Fortunately, Bash 4.2, released in 2011, supports the 'lastpipe' option,
which makes the last element of a pipeline run in the current shell process.

Switch to the pipeline with 'lastpipe' solution, and also set 'pipefail'
to catch errors from ${NM}.

Add the bash requirement to Documentation/process/changes.rst.

Fixes: 31cb50b559 ("kbuild: check static EXPORT_SYMBOL* by script instead of modpost")
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Reported-by: Wang Yugui <wangyugui@e16-tech.com>
Tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-10 03:47:13 +09:00
Linus Torvalds 6bfb56e93b cert host tools: Stop complaining about deprecated OpenSSL functions
OpenSSL 3.0 deprecated the OpenSSL's ENGINE API.  That is as may be, but
the kernel build host tools still use it.  Disable the warning about
deprecated declarations until somebody who cares fixes it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-06-08 13:18:39 -07:00
Masahiro Yamada 49c3ca34f7 scripts/nsdeps: adjust to the format change of *.mod files
Commit 22f26f2177 ("kbuild: get rid of duplication in *.mod files")
changed the format of *.mod files to put one object per line, but missed
to adjust scripts/nsdeps.

Fixes: 22f26f2177 ("kbuild: get rid of duplication in *.mod files")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-08 20:14:13 +09:00
Kevin Locke 7bf179de5b kbuild: avoid regex RS for POSIX awk
In 22f26f2177 awk was added to deduplicate *.mod files.  The awk
invocation passes -v RS='( |\n)' to match a space or newline character
as the record separator.  Unfortunately, POSIX states[1]

> If RS contains more than one character, the results are unspecified.

Some implementations (such as the One True Awk[2] used by the BSDs) do
not treat RS as a regular expression.  When awk does not support regex
RS, build failures such as the following are produced (first error using
allmodconfig):

      CC [M]  arch/x86/events/intel/uncore.o
      CC [M]  arch/x86/events/intel/uncore_nhmex.o
      CC [M]  arch/x86/events/intel/uncore_snb.o
      CC [M]  arch/x86/events/intel/uncore_snbep.o
      CC [M]  arch/x86/events/intel/uncore_discovery.o
      LD [M]  arch/x86/events/intel/intel-uncore.o
    ld: cannot find uncore_nhmex.o: No such file or directory
    ld: cannot find uncore_snb.o: No such file or directory
    ld: cannot find uncore_snbep.o: No such file or directory
    ld: cannot find uncore_discovery.o: No such file or directory
    make[3]: *** [scripts/Makefile.build:422: arch/x86/events/intel/intel-uncore.o] Error 1
    make[2]: *** [scripts/Makefile.build:487: arch/x86/events/intel] Error 2
    make[1]: *** [scripts/Makefile.build:487: arch/x86/events] Error 2
    make: *** [Makefile:1839: arch/x86] Error 2

To avoid this, use printf(1) to produce a newline between each object
path, instead of the space produced by echo(1), so that the default RS
can be used by awk.

[1]: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/awk.html
[2]: https://github.com/onetrueawk/awk

Fixes: 22f26f2177 ("kbuild: get rid of duplication in *.mod files")
Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-08 01:27:26 +09:00
Josh Poimboeuf dcea997bee faddr2line: Fix overlapping text section failures, the sequel
If a function lives in a section other than .text, but .text also exists
in the object, faddr2line may wrongly assume .text.  This can result in
comically wrong output.  For example:

  $ scripts/faddr2line vmlinux.o enter_from_user_mode+0x1c
  enter_from_user_mode+0x1c/0x30:
  find_next_bit at /home/jpoimboe/git/linux/./include/linux/find.h:40
  (inlined by) perf_clear_dirty_counters at /home/jpoimboe/git/linux/arch/x86/events/core.c:2504

Fix it by passing the section name to addr2line, unless the object file
is vmlinux, in which case the symbol table uses absolute addresses.

Fixes: 1d1a0e7c51 ("scripts/faddr2line: Fix overlapping text section failures")
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://lore.kernel.org/r/7d25bc1408bd3a750ac26e60d2f2815a5f4a8363.1654130536.git.jpoimboe@kernel.org
2022-06-06 11:50:11 -07:00
Linus Torvalds 44688ffd11 A set of objtool fixes:
- Handle __ubsan_handle_builtin_unreachable() correctly and treat it as
     noreturn.
 
   - Allow architectures to select uaccess validation
 
   - Use the non-instrumented bit test for test_cpu_has() to prevent escape
     from non-instrumentable regions.
 
   - Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape
     from non-instrumentable regions.
 
   - Mark a few tiny inline as __always_inline to prevent GCC from bringing
     them out of line and instrumenting them.
 
   - Mark the empty stub context_tracking_enabled() as always inline as GCC
     brings them out of line and instruments the empty shell.
 
   - Annotate ex_handler_msr_mce() as dead end
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Merge tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fixes from Thomas Gleixner:

 - Handle __ubsan_handle_builtin_unreachable() correctly and treat it as
   noreturn

 - Allow architectures to select uaccess validation

 - Use the non-instrumented bit test for test_cpu_has() to prevent
   escape from non-instrumentable regions

 - Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape
   from non-instrumentable regions

 - Mark a few tiny inline as __always_inline to prevent GCC from
   bringing them out of line and instrumenting them

 - Mark the empty stub context_tracking_enabled() as always inline as
   GCC brings them out of line and instruments the empty shell

 - Annotate ex_handler_msr_mce() as dead end

* tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/extable: Annotate ex_handler_msr_mce() as a dead end
  context_tracking: Always inline empty stubs
  x86: Always inline on_thread_stack() and current_top_of_stack()
  jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds
  x86/cpu: Elide KCSAN for cpu_has() and friends
  objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn
  objtool: Add CONFIG_HAVE_UACCESS_VALIDATION
2022-06-05 09:45:27 -07:00
Linus Torvalds 71e80720db Kbuild updates for v5.19 (2nd)
- Fix build regressions for parisc, csky, nios2, openrisc
 
  - Simplify module builds for CONFIG_LTO_CLANG and CONFIG_X86_KERNEL_IBT
 
  - Remove arch/parisc/nm, which was presumably a workaround for old tools
 
  - Check the odd combination of EXPORT_SYMBOL and 'static' precisely
 
  - Make external module builds robust against "too long argument error"
 
  - Support j, k keys for moving the cursor in nconfig
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Merge tag 'kbuild-v5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull more Kbuild updates from Masahiro Yamada:

 - Fix build regressions for parisc, csky, nios2, openrisc

 - Simplify module builds for CONFIG_LTO_CLANG and CONFIG_X86_KERNEL_IBT

 - Remove arch/parisc/nm, which was presumably a workaround for old
   tools

 - Check the odd combination of EXPORT_SYMBOL and 'static' precisely

 - Make external module builds robust against "too long argument error"

 - Support j, k keys for moving the cursor in nconfig

* tag 'kbuild-v5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits)
  kbuild: Allow to select bash in a modified environment
  scripts: kconfig: nconf: make nconfig accept jk keybindings
  modpost: use fnmatch() to simplify match()
  modpost: simplify mod->name allocation
  kbuild: factor out the common objtool arguments
  kbuild: move vmlinux.o link to scripts/Makefile.vmlinux_o
  kbuild: clean .tmp_* pattern by make clean
  kbuild: remove redundant cleanups in scripts/link-vmlinux.sh
  kbuild: rebuild multi-object modules when objtool is updated
  kbuild: add cmd_and_savecmd macro
  kbuild: make *.mod rule robust against too long argument error
  kbuild: make built-in.a rule robust against too long argument error
  kbuild: check static EXPORT_SYMBOL* by script instead of modpost
  parisc: remove arch/parisc/nm
  kbuild: do not create *.prelink.o for Clang LTO or IBT
  kbuild: replace $(linked-object) with CONFIG options
  kbuild: do not try to parse *.cmd files for objects provided by compiler
  kbuild: replace $(if A,A,B) with $(or A,B) in scripts/Makefile.modpost
  modpost: squash if...else-if in find_elf_symbol2()
  modpost: reuse ARRAY_SIZE() macro for section_mismatch()
  ...
2022-06-05 09:06:03 -07:00
Schspa Shi 42ce60aa5a kbuild: Allow to select bash in a modified environment
This fixes the build error when the system has a default bash version
which is too old to support associative array variables.

The build error log as fellowing:
linux/scripts/check-local-export: line 11: declare: -A: invalid option
declare: usage: declare [-afFirtx] [-p] [name[=value] ...]

Signed-off-by: Schspa Shi <schspa@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-05 06:20:58 +09:00
Isak Ellmer 2bbb486162 scripts: kconfig: nconf: make nconfig accept jk keybindings
Make nconfig accept jk keybindings for movement in addition to arrow
keys.

Signed-off-by: Isak Ellmer <isak01@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-05 06:20:57 +09:00
Masahiro Yamada a89227d769 modpost: use fnmatch() to simplify match()
Replace the own implementation for wildcard (glob) matching with
a function call to fnmatch().

Also, change the return type to 'bool'.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-06-05 06:20:57 +09:00
Masahiro Yamada 8c9ce89c5b modpost: simplify mod->name allocation
mod->name is set to the ELF filename with the suffix ".o" stripped.

The current code calls strdup() and free() to manipulate the string,
but a simpler approach is to pass new_module() with the name length
subtracted by 2.

Also, check if the passed filename ends with ".o" before stripping it.

The current code blindly chops the suffix:

    tmp[strlen(tmp) - 2] = '\0'

It will cause buffer under-run if strlen(tmp) < 2;

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-06-05 06:20:57 +09:00
Masahiro Yamada b42d230650 kbuild: factor out the common objtool arguments
scripts/Makefile.build and scripts/link-vmlinux.sh have similar setups
for the objtool arguments.

It was difficult to factor out them because all the vmlinux build rules
were written in a shell script. It is somewhat tedious to touch the two
files every time a new objtool option is supported.

To reduce the code duplication, move the objtool for vmlinux.o into
scripts/Makefile.vmlinux_o. Then, move the common macros to Makefile.lib
so they are shared between Makefile.build and Makefile.vmlinux_o.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-05 06:20:57 +09:00
Masahiro Yamada 5d45950dfb kbuild: move vmlinux.o link to scripts/Makefile.vmlinux_o
This is a preparation for moving the objtool rule in the next commit.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-05 06:20:57 +09:00
Masahiro Yamada b0d6207bad kbuild: clean .tmp_* pattern by make clean
Change the "make clean" rule to remove all the .tmp_* files.

.tmp_objdiff is the only exception, which should be removed by
"make mrproper".

Rename the record directory of objdiff, .tmp_objdiff to .objdiff to
avoid the removal by "make clean".

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-05 06:20:57 +09:00
Linus Torvalds c6f2f3e2c8 Add partial Loongarch architecture code
This is the majority of the loongarch architecture code, including
 the final system call interface and all core functionality.
 
 It still misses three sets of peripheral but vital patches to add
 support for other subsystems, which have yet to pass review:
 
  - The drivers/firmware/efi stub for booting from a standard UEFI
    firmware implementation. Both the original custom boot interface
    and a draft implementation of the EFI stub did not make it, so
    it is currently impossible to boot the kernel, until the
    loongarch specific portions get accepted into the UEFI subsystem
 
  - The drivers/irqchip/irq-loongson-*.c drivers are shared with the
    the MIPS port, but currently lack support for ACPI based booting,
    which will get merged through the irqchip subsystem.
 
  - Similarly, the drivers/pci/controller/pci-loongson.c needs to be
    modified for ACPI support, which will be merged through the
    PCI subsystem.
 
 While the port cannot actually be used before all the above are
 merged, having it in 5.19 helps to establish the user space ABI
 for the libc ports to build on, and to help any treewide changes
 in the mainline kernel get applied here as well. A gcc-12 based
 tool chains for build testing is now included in
 https://mirrors.edge.kernel.org/pub/tools/crosstool/.
 
 Original description from Huacai Chen at
 https://lore.kernel.org/lkml/20220603072053.35005-1-chenhuacai@loongson.cn/:
 
  "LoongArch is a new RISC ISA, which is a bit like MIPS or RISC-V.
   LoongArch includes a reduced 32-bit version (LA32R), a standard 32-bit
   version (LA32S) and a 64-bit version (LA64). LoongArch use ACPI as its
   boot protocol LoongArch-specific interrupt controllers (similar to APIC)
   are already added in the next revision of ACPI Specification (current
   revision is 6.4).
 
   This patchset is adding basic LoongArch support in mainline kernel, we
   can see a complete snapshot here:
   https://github.com/loongson/linux/tree/loongarch-next
   https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git/log/?h=loongarch-next
 
   Cross-compile tool chain to build kernel:
   https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-2022-03-03-cross-tools-gcc-glibc.tar.xz
 
   A CLFS-based Linux distro:
   https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-system-2022-03-03.tar.bz2
 
   Open-source tool chain which is under review (Binutils and Gcc are already upstream):
   https://github.com/loongson/binutils-gdb/tree/upstream_v3.1
   https://github.com/loongson/gcc/tree/loongarch_upstream_v6.3
   https://github.com/loongson/glibc/tree/loongarch_2_35_dev_v2.2
 
   Loongson and LoongArch documentations:
   https://github.com/loongson/LoongArch-Documentation
 
   LoongArch-specific interrupt controllers:
   https://mantis.uefi.org/mantis/view.php?id=2203
   https://mantis.uefi.org/mantis/view.php?id=2313"
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Merge tag 'loongarch-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull initial Loongarch architecture code from Arnd Bergmann:
 "This is the majority of the loongarch architecture code, including the
  final system call interface and all core functionality.

  It still misses three sets of peripheral but vital patches to add
  support for other subsystems, which have yet to pass review:

   - The drivers/firmware/efi stub for booting from a standard UEFI
     firmware implementation. Both the original custom boot interface
     and a draft implementation of the EFI stub did not make it, so it
     is currently impossible to boot the kernel, until the loongarch
     specific portions get accepted into the UEFI subsystem

   - The drivers/irqchip/irq-loongson-*.c drivers are shared with the
     the MIPS port, but currently lack support for ACPI based booting,
     which will get merged through the irqchip subsystem.

   - Similarly, the drivers/pci/controller/pci-loongson.c needs to be
     modified for ACPI support, which will be merged through the PCI
     subsystem.

  While the port cannot actually be used before all the above are
  merged, having it in 5.19 helps to establish the user space ABI for
  the libc ports to build on, and to help any treewide changes in the
  mainline kernel get applied here as well.

  A gcc-12 based tool chains for build testing is now included in

    https://mirrors.edge.kernel.org/pub/tools/crosstool/"

Original description from Huacai Chen:
 "LoongArch is a new RISC ISA, which is a bit like MIPS or RISC-V.
  LoongArch includes a reduced 32-bit version (LA32R), a standard 32-bit
  version (LA32S) and a 64-bit version (LA64). LoongArch use ACPI as its
  boot protocol LoongArch-specific interrupt controllers (similar to APIC)
  are already added in the next revision of ACPI Specification (current
  revision is 6.4).

  This patchset is adding basic LoongArch support in mainline kernel, we
  can see a complete snapshot here:

    https://github.com/loongson/linux/tree/loongarch-next
    https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git/log/?h=loongarch-next

  Cross-compile tool chain to build kernel:

    https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-2022-03-03-cross-tools-gcc-glibc.tar.xz

  A CLFS-based Linux distro:

    https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-system-2022-03-03.tar.bz2

  Open-source tool chain which is under review (Binutils and Gcc are already upstream):

    https://github.com/loongson/binutils-gdb/tree/upstream_v3.1
    https://github.com/loongson/gcc/tree/loongarch_upstream_v6.3
    https://github.com/loongson/glibc/tree/loongarch_2_35_dev_v2.2

  Loongson and LoongArch documentations:

    https://github.com/loongson/LoongArch-Documentation

  LoongArch-specific interrupt controllers:

    https://mantis.uefi.org/mantis/view.php?id=2203
    https://mantis.uefi.org/mantis/view.php?id=2313"

Link: https://lore.kernel.org/lkml/20220603072053.35005-1-chenhuacai@loongson.cn/

* tag 'loongarch-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (24 commits)
  MAINTAINERS: Add maintainer information for LoongArch
  LoongArch: Add Loongson-3 default config file
  LoongArch: Add Non-Uniform Memory Access (NUMA) support
  LoongArch: Add multi-processor (SMP) support
  LoongArch: Add VDSO and VSYSCALL support
  LoongArch: Add some library functions
  LoongArch: Add misc common routines
  LoongArch: Add ELF and module support
  LoongArch: Add signal handling support
  LoongArch: Add system call support
  LoongArch: Add memory management
  LoongArch: Add process management
  LoongArch: Add exception/interrupt handling
  LoongArch: Add boot and setup routines
  LoongArch: Add other common headers
  LoongArch: Add atomic/locking headers
  LoongArch: Add CPU definition headers
  LoongArch: Add build infrastructure
  LoongArch: Add writecombine support for drm
  LoongArch: Add ELF-related definitions
  ...
2022-06-03 14:09:21 -07:00
Linus Torvalds 500a434fc5 Driver core changes for 5.19-rc1
Here is the set of driver core changes for 5.19-rc1.
 
 Note, I'm not really happy with this pull request as-is, see below for
 details, but overall this is all good for everything but a small set of
 systems, which we have a fix for already.
 
 Lots of tiny driver core changes and cleanups happened this cycle,
 but the two major things were:
 
 	- firmware_loader reorganization and additions including the
 	  ability to have XZ compressed firmware images and the ability
 	  for userspace to initiate the firmware load when it needs to,
 	  instead of being always initiated by the kernel. FPGA devices
 	  specifically want this ability to have their firmware changed
 	  over the lifetime of the system boot, and this allows them to
 	  work without having to come up with yet-another-custom-uapi
 	  interface for loading firmware for them.
 	- physical location support added to sysfs so that devices that
 	  know this information, can tell userspace where they are
 	  located in a common way.  Some ACPI devices already support
 	  this today, and more bus types should support this in the
 	  future.
 
 Smaller changes included:
 	- driver_override api cleanups and fixes
 	- error path cleanups and fixes
 	- get_abi script fixes
 	- deferred probe timeout changes.
 
 It's that last change that I'm the most worried about.  It has been
 reported to cause boot problems for a number of systems, and I have a
 tested patch series that resolves this issue.  But I didn't get it
 merged into my tree before 5.18-final came out, so it has not gotten any
 linux-next testing.
 
 I'll send the fixup patches (there are 2) as a follow-on series to this
 pull request if you want to take them directly, _OR_ I can just revert
 the probe timeout changes and they can wait for the next -rc1 merge
 cycle.  Given that the fixes are tested, and pretty simple, I'm leaning
 toward that choice.  Sorry this all came at the end of the merge window,
 I should have resolved this all 2 weeks ago, that's my fault as it was
 in the middle of some travel for me.
 
 All have been tested in linux-next for weeks, with no reported issues
 other than the above-mentioned boot time outs.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the set of driver core changes for 5.19-rc1.

  Lots of tiny driver core changes and cleanups happened this cycle, but
  the two major things are:

   - firmware_loader reorganization and additions including the ability
     to have XZ compressed firmware images and the ability for userspace
     to initiate the firmware load when it needs to, instead of being
     always initiated by the kernel. FPGA devices specifically want this
     ability to have their firmware changed over the lifetime of the
     system boot, and this allows them to work without having to come up
     with yet-another-custom-uapi interface for loading firmware for
     them.

   - physical location support added to sysfs so that devices that know
     this information, can tell userspace where they are located in a
     common way. Some ACPI devices already support this today, and more
     bus types should support this in the future.

  Smaller changes include:

   - driver_override api cleanups and fixes

   - error path cleanups and fixes

   - get_abi script fixes

   - deferred probe timeout changes.

  It's that last change that I'm the most worried about. It has been
  reported to cause boot problems for a number of systems, and I have a
  tested patch series that resolves this issue. But I didn't get it
  merged into my tree before 5.18-final came out, so it has not gotten
  any linux-next testing.

  I'll send the fixup patches (there are 2) as a follow-on series to this
  pull request.

  All have been tested in linux-next for weeks, with no reported issues
  other than the above-mentioned boot time-outs"

* tag 'driver-core-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits)
  driver core: fix deadlock in __device_attach
  kernfs: Separate kernfs_pr_cont_buf and rename_lock.
  topology: Remove unused cpu_cluster_mask()
  driver core: Extend deferred probe timeout on driver registration
  MAINTAINERS: add Russ Weight as a firmware loader maintainer
  driver: base: fix UAF when driver_attach failed
  test_firmware: fix end of loop test in upload_read_show()
  driver core: location: Add "back" as a possible output for panel
  driver core: location: Free struct acpi_pld_info *pld
  driver core: Add "*" wildcard support to driver_async_probe cmdline param
  driver core: location: Check for allocations failure
  arch_topology: Trace the update thermal pressure
  kernfs: Rename kernfs_put_open_node to kernfs_unlink_open_file.
  export: fix string handling of namespace in EXPORT_SYMBOL_NS
  rpmsg: use local 'dev' variable
  rpmsg: Fix calling device_lock() on non-initialized device
  firmware_loader: describe 'module' parameter of firmware_upload_register()
  firmware_loader: Move definitions from sysfs_upload.h to sysfs.h
  firmware_loader: Fix configs for sysfs split
  selftests: firmware: Add firmware upload selftests
  ...
2022-06-03 11:48:47 -07:00
Linus Torvalds 6f9b5ed8ca Char / Misc / Other smaller driver subsystem updates for 5.19-rc1
Here is the large set of char, misc, and other driver subsystem updates
 for 5.19-rc1.  The merge request for this has been delayed as I wanted
 to get lots of linux-next testing due to some late arrivals of changes
 for the habannalabs driver.
 
 Highlights of this merge are:
 	- habanalabs driver updates for new hardware types and fixes and
 	  other updates
 	- IIO driver tree merge which includes loads of new IIO drivers
 	  and cleanups and additions
 	- PHY driver tree merge with new drivers and small updates to
 	  existing ones
 	- interconnect driver tree merge with fixes and updates
 	- soundwire driver tree merge with some small fixes
 	- coresight driver tree merge with small fixes and updates
 	- mhi bus driver tree merge with lots of updates and new device
 	  support
 	- firmware driver updates
 	- fpga driver updates
 	- lkdtm driver updates (with a merge conflict, more on that
 	  below)
 	- extcon driver tree merge with small updates
 	- lots of other tiny driver updates and fixes and cleanups, full
 	  details in the shortlog.
 
 All of these have been in linux-next for almost 2 weeks with no reported
 problems.
 
 Note, there are 3 merge conflicts when merging this with your tree:
 	- MAINTAINERS, should be easy to resolve
 	- drivers/slimbus/qcom-ctrl.c, should be straightforward
 	  resolution
 	- drivers/misc/lkdtm/stackleak.c, not an easy resolution.  This
 	  has been noted in the linux-next tree for a while, and
 	  resolved there, here's a link to the resolution that Stephen
 	  came up with and that Kees says is correct:
 	  	https://lore.kernel.org/r/20220509185344.3fe1a354@canb.auug.org.au
 
 I will be glad to provide a merge point that contains these resolutions
 if that makes things any easier for you.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc / other smaller driver subsystem updates from Greg KH:
 "Here is the large set of char, misc, and other driver subsystem
  updates for 5.19-rc1. The merge request for this has been delayed as I
  wanted to get lots of linux-next testing due to some late arrivals of
  changes for the habannalabs driver.

  Highlights of this merge are:

   - habanalabs driver updates for new hardware types and fixes and
     other updates

   - IIO driver tree merge which includes loads of new IIO drivers and
     cleanups and additions

   - PHY driver tree merge with new drivers and small updates to
     existing ones

   - interconnect driver tree merge with fixes and updates

   - soundwire driver tree merge with some small fixes

   - coresight driver tree merge with small fixes and updates

   - mhi bus driver tree merge with lots of updates and new device
     support

   - firmware driver updates

   - fpga driver updates

   - lkdtm driver updates (with a merge conflict, more on that below)

   - extcon driver tree merge with small updates

   - lots of other tiny driver updates and fixes and cleanups, full
     details in the shortlog.

  All of these have been in linux-next for almost 2 weeks with no
  reported problems"

* tag 'char-misc-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (387 commits)
  habanalabs: use separate structure info for each error collect data
  habanalabs: fix missing handle shift during mmap
  habanalabs: remove hdev from hl_ctx_get args
  habanalabs: do MMU prefetch as deferred work
  habanalabs: order memory manager messages
  habanalabs: return -EFAULT on copy_to_user error
  habanalabs: use NULL for eventfd
  habanalabs: update firmware header
  habanalabs: add support for notification via eventfd
  habanalabs: add topic to memory manager buffer
  habanalabs: handle race in driver fini
  habanalabs: add device memory scrub ability through debugfs
  habanalabs: use unified memory manager for CB flow
  habanalabs: unified memory manager new code for CB flow
  habanalabs/gaudi: set arbitration timeout to a high value
  habanalabs: add put by handle method to memory manager
  habanalabs: hide memory manager page shift
  habanalabs: Add separate poll interval value for protocol
  habanalabs: use get_task_pid() to take PID
  habanalabs: add prefetch flag to the MAP operation
  ...
2022-06-03 11:36:34 -07:00
Linus Torvalds 04d93b2b8b SPDX changes for 5.19-rc1
Here are some SPDX (i.e. licensing) changes for 5.19-rc1
 
 The SPDX-labeling effort has started to pick up again, so here are some
 changes for various parts of the tree that are related to this effort.
 
 Included in here are:
 	- freevxfs license updates
 	- spihash.c license cleanups
 	- spdxcheck script updates to make things easier to work with
 	  going forward
 
 All of the license updates came from the original authors/copyright
 holders of the code involved.
 
 All of these have been in linux-next for weeks with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'spdx-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx

Pull SPDX updates from Greg KH:
 "Here are some SPDX license marker changes.

  The SPDX-labeling effort has started to pick up again, so here are
  some changes for various parts of the tree that are related to this
  effort.

  Included in here are:

   - freevxfs license updates

   - spihash.c license cleanups

   - spdxcheck script updates to make things easier to work with going
     forward

  All of the license updates came from the original authors/copyright
  holders of the code involved.

  All of these have been in linux-next for weeks with no reported
  issues"

* tag 'spdx-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx:
  siphash: add SPDX tags as sole licensing authority
  scripts/spdxcheck: Exclude top-level README
  scripts/spdxcheck: Exclude MAINTAINERS/CREDITS
  scripts/spdxcheck: Exclude config directories
  scripts/spdxcheck: Put excluded files and directories into a separate file
  scripts/spdxcheck: Add option to display files without SPDX
  scripts/spdxcheck: Add [sub]directory statistics
  scripts/spdxcheck: Add directory statistics
  scripts/spdxcheck: Add percentage to statistics
  freevxfs: relicense to GPLv2 only
2022-06-03 10:34:34 -07:00
Huacai Chen fa96b57c14 LoongArch: Add build infrastructure
Add Kbuild, Makefile, Kconfig and link script for LoongArch build
infrastructure.

Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2022-06-03 20:09:27 +08:00
Huacai Chen 08145b087e LoongArch: Add ELF-related definitions
Add ELF-related definitions for LoongArch, including: EM_LOONGARCH,
KEXEC_ARCH_LOONGARCH, AUDIT_ARCH_LOONGARCH32, AUDIT_ARCH_LOONGARCH64
and NT_LOONGARCH_*.

Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2022-06-03 20:09:27 +08:00
Linus Torvalds 50fd82b3a9 A handful of late-arriving documentation fixes and the addition of an SVG
tux logo which, I'm assured, we're going to want.
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Merge tag 'docs-5.19-2' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A handful of late-arriving documentation fixes and the addition of an
  SVG tux logo which, I'm assured, we're going to want"

* tag 'docs-5.19-2' of git://git.lwn.net/linux:
  documentation: Format button_dev as a pointer.
  docs: add SVG version of the Linux logo
  docs: move Linux logo into a new `images` folder
  docs: blockdev: change title to match section content
  docs/conf.py: Cope with removal of language=None in Sphinx 5.0.0
2022-06-02 15:36:06 -07:00
Miguel Ojeda fae35da4ac docs: move Linux logo into a new `images` folder
Having assets in the top-level `Documentation` directory can make
it harder to find the documents one needs, especially if we want
to add more of them later on.

Instead, create a new `images` folder inside it that is used
to hold assets such as logos.

In addition, update the reference in `scripts/spdxcheck-test.sh`.

Link: https://lore.kernel.org/lkml/8735hicoy7.fsf@meer.lwn.net/
Suggested-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://lore.kernel.org/r/20220528153132.8636-1-ojeda@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-06-01 09:32:45 -06:00
Masahiro Yamada a78b6afa99 kbuild: remove redundant cleanups in scripts/link-vmlinux.sh
These are cleaned by the top Makefile.

vmlinux.o and .vmlinux.d matches the '*.[aios]' and '.*.d' patterns
respectively.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-01 23:07:29 +09:00
Masahiro Yamada f6b66ca4f3 kbuild: rebuild multi-object modules when objtool is updated
When CONFIG_LTO_CLANG or CONFIG_X86_KERNEL_IBT is enabled, objtool for
multi-object modules is postponed until the objects are linked together.

Make sure to re-run objtool and re-link multi-object modules when
objtool is updated.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-01 23:07:29 +09:00
Masahiro Yamada ebd191b38c kbuild: add cmd_and_savecmd macro
Separate out the command execution part of if_changed, as we did
for if_changed_dep.

This allows us to reuse it in if_changed_rule.

  define rule_foo
          $(call cmd_and_savecmd,foo)
          $(call cmd,bar)
  endef

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-01 23:07:29 +09:00
Masahiro Yamada c6031b1dbb kbuild: make *.mod rule robust against too long argument error
Like built-in.a, the command length of the *.mod rule scales with
the depth of the directory times the number of objects in the Makefile.

Add $(obj)/ by the shell command (awk) instead of by Make's builtin
function.

In-tree modules still have some room to the limit (ARG_MAX=2097152),
but this is more future-proof for big modules in a deep directory.

For example, you can build i915 as a module (CONFIG_DRM_I915=m) and
compare drivers/gpu/drm/i915/.i915.mod.cmd with/without this commit.

The issue is more critical for external modules because the M= path
can be very long as Jeff Johnson reported before [1].

[1] https://lore.kernel.org/linux-kbuild/4c02050c4e95e4cb8cc04282695f8404@codeaurora.org/

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-01 23:07:29 +09:00
Masahiro Yamada cd968b97c4 kbuild: make built-in.a rule robust against too long argument error
Kbuild runs at the top of objtree instead of changing the working
directory to subdirectories. I think this design is nice overall but
some commands have a scalability issue.

The build command of built-in.a is one of them whose length scales with:

    O(D * N)

Here, D is the length of the directory path (i.e. $(obj)/ prefix),
N is the number of objects in the Makefile, O() is the big O notation.

The deeper directory the Makefile directory is located, the more easily
it will hit the too long argument error.

We can make it better. Trim the $(obj)/ by Make's builtin function, and
restore it by a shell command (sed).

With this, the command length scales with:

    O(D + N)

In-tree modules still have some room to the limit (ARG_MAX=2097152),
but this is more future-proof for big modules in a deep directory.

For example, you can build i915 as builtin (CONFIG_DRM_I915=y) and
compare drivers/gpu/drm/i915/.built-in.a.cmd with/without this commit.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-01 23:07:29 +09:00
Masahiro Yamada 31cb50b559 kbuild: check static EXPORT_SYMBOL* by script instead of modpost
The 'static' specifier and EXPORT_SYMBOL() are an odd combination.

Commit 15bfc2348d ("modpost: check for static EXPORT_SYMBOL*
functions") tried to detect it, but this check has false negatives.

Here is the sample code.

  Makefile:

    obj-y += foo1.o foo2.o

  foo1.c:

    #include <linux/export.h>
    static void foo(void) {}
    EXPORT_SYMBOL(foo);

  foo2.c:

    void foo(void) {}

foo1.c exports the static symbol 'foo', but modpost cannot catch it
because it is fooled by foo2.c, which has a global symbol with the
same name.

s->is_static is cleared if a global symbol with the same name is found
somewhere, but EXPORT_SYMBOL() and the global symbol do not necessarily
belong to the same compilation unit.

This check should be done per compilation unit, but I do not know how
to do it in modpost. modpost runs against vmlinux.o or modules, which
merges multiple objects, then forgets their origin.

modpost cannot parse individual objects because they may not be ELF but
LLVM IR when CONFIG_LTO_CLANG=y.

Add a simple bash script to parse the output from ${NM}. This works for
CONFIG_LTO_CLANG=y because llvm-nm can dump symbols of LLVM IR files.

Revert 15bfc2348d.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-06-01 23:07:02 +09:00
Masahiro Yamada c25e1c5582 kbuild: do not create *.prelink.o for Clang LTO or IBT
When CONFIG_LTO_CLANG=y, additional intermediate *.prelink.o is created
for each module. Also, objtool is postponed until LLVM IR is converted
to ELF.

CONFIG_X86_KERNEL_IBT works in a similar way to postpone objtool until
objects are merged together.

This commit stops generating *.prelink.o, so the build flow will look
similar with/without LTO.

The following figures show how the LTO build currently works, and
how this commit is changing it.

Current build flow
==================

 [1] single-object module

                                      $(LD)
           $(CC)                     +objtool              $(LD)
    foo.c --------------------> foo.o -----> foo.prelink.o -----> foo.ko
                              (LLVM IR)          (ELF)       |    (ELF)
                                                             |
                                                 foo.mod.o --/
                                                 (LLVM IR)

 [2] multi-object module
                                      $(LD)
           $(CC)         $(AR)       +objtool               $(LD)
    foo1.c -----> foo1.o -----> foo.o -----> foo.prelink.o -----> foo.ko
                           |  (archive)          (ELF)       |    (ELF)
    foo2.c -----> foo2.o --/                                 |
                 (LLVM IR)                       foo.mod.o --/
                                                 (LLVM IR)

  One confusion is that foo.o in multi-object module is an archive
  despite of its suffix.

New build flow
==============

 [1] single-object module

  Since there is only one object, there is no need to keep the LLVM IR.
  Use $(CC)+$(LD) to generate an ELF object in one build rule. When LTO
  is disabled, $(LD) is unneeded because $(CC) produces an ELF object.

               $(CC)+$(LD)+objtool              $(LD)
    foo.c ----------------------------> foo.o ---------> foo.ko
                                        (ELF)     |      (ELF)
                                                  |
                                      foo.mod.o --/
                                      (LLVM IR)

 [2] multi-object module

  Previously, $(AR) was used to combine LLVM IR files into an archive,
  but there was no technical reason to do so. Use $(LD) to merge them
  into a single ELF object.

                               $(LD)
             $(CC)            +objtool          $(LD)
    foo1.c ---------> foo1.o ---------> foo.o ---------> foo.ko
                                 |      (ELF)     |      (ELF)
    foo2.c ---------> foo2.o ----/                |
                     (LLVM IR)        foo.mod.o --/
                                      (LLVM IR)

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
2022-05-29 18:39:35 +09:00
Masahiro Yamada 0cfd90060d kbuild: replace $(linked-object) with CONFIG options
*.prelink.o is created when CONFIG_LTO_CLANG or CONFIG_X86_KERNEL_IBT
is enabled.

Replace $(linked-object) with $(CONFIG_LTO_CLANG)$(CONFIG_X86_KERNEL_IBT)
so you will get a quick idea of when the --link option is passed.

No functional change is intended.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14
2022-05-29 18:39:35 +09:00
Masahiro Yamada 0aa24a79ee kbuild: do not try to parse *.cmd files for objects provided by compiler
Guenter Roeck reported the build breakage for parisc and csky.
I confirmed nios2 and openrisc are broken as well.

The reason is that they borrow libgcc.a from the toolchains.

For example, see this line in arch/parisc/Makefile:

    LIBGCC          := $(shell $(CC) -print-libgcc-file-name)

Some objects in libgcc.a are linked to vmlinux.o, but they do not have
.*.cmd files.

Obviously, there is no EXPORT_SYMBOL in external objects. Ignore them.

(Most of the architectures import library code into the kernel tree.
Perhaps those 4 architectures can do similar, but I do not know how
challenging it is.)

Fixes: f292d875d0 ("modpost: extract symbol versions from *.cmd files")
Link: https://lore.kernel.org/linux-kbuild/20220528224745.GA2501857@roeck-us.net/T/#mac65c20c71c3e272db0350ecfba53fcd8905b0a0
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
2022-05-29 18:36:41 +09:00
Linus Torvalds 6f664045c8 Not a lot of material this cycle. Many singleton patches against various
subsystems.   Most notably some maintenance work in ocfs2 and initramfs.
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Merge tag 'mm-nonmm-stable-2022-05-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc updates from Andrew Morton:
 "The non-MM patch queue for this merge window.

  Not a lot of material this cycle. Many singleton patches against
  various subsystems. Most notably some maintenance work in ocfs2
  and initramfs"

* tag 'mm-nonmm-stable-2022-05-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (65 commits)
  kcov: update pos before writing pc in trace function
  ocfs2: dlmfs: fix error handling of user_dlm_destroy_lock
  ocfs2: dlmfs: don't clear USER_LOCK_ATTACHED when destroying lock
  fs/ntfs: remove redundant variable idx
  fat: remove time truncations in vfat_create/vfat_mkdir
  fat: report creation time in statx
  fat: ignore ctime updates, and keep ctime identical to mtime in memory
  fat: split fat_truncate_time() into separate functions
  MAINTAINERS: add Muchun as a memcg reviewer
  proc/sysctl: make protected_* world readable
  ia64: mca: drop redundant spinlock initialization
  tty: fix deadlock caused by calling printk() under tty_port->lock
  relay: remove redundant assignment to pointer buf
  fs/ntfs3: validate BOOT sectors_per_clusters
  lib/string_helpers: fix not adding strarray to device's resource list
  kernel/crash_core.c: remove redundant check of ck_cmdline
  ELF, uapi: fixup ELF_ST_TYPE definition
  ipc/mqueue: use get_tree_nodev() in mqueue_get_tree()
  ipc: update semtimedop() to use hrtimer
  ipc/sem: remove redundant assignments
  ...
2022-05-27 11:22:03 -07:00
Josh Poimboeuf 5f3da8c085 objtool: Add CONFIG_HAVE_UACCESS_VALIDATION
Allow an arch specify that it has objtool uaccess validation with
CONFIG_HAVE_UACCESS_VALIDATION.  For now, doing so unconditionally
selects CONFIG_OBJTOOL.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/d393d5e2fe73aec6e8e41d5c24f4b6fe8583f2d8.1650384225.git.jpoimboe@redhat.com
2022-05-27 12:34:43 +02:00
Masahiro Yamada c9db188405 kbuild: replace $(if A,A,B) with $(or A,B) in scripts/Makefile.modpost
Similar cleanup to commit 5c8166419a ("kbuild: replace $(if A,A,B)
with $(or A,B)").

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-27 16:17:43 +09:00
Masahiro Yamada 68fef6704e modpost: squash if...else-if in find_elf_symbol2()
if ((addr - sym->st_value) < distance) {
            distance = addr - sym->st_value;
            near = sym;
    } else if ((addr - sym->st_value) == distance) {
            near = sym;
    }

is equivalent to:

    if (addr - sym->st_value <= distance) {
            distance = addr - sym->st_value;
            near = sym;
    }

(The else-if block can overwrite 'distance' with the same value).

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-27 16:16:35 +09:00
Masahiro Yamada c5c468dcc2 modpost: reuse ARRAY_SIZE() macro for section_mismatch()
Move ARRAY_SIZE() from file2alias.c to modpost.h to reuse it in
section_mismatch().

Also, move the variable 'check' inside the for-loop.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-27 16:15:40 +09:00
Masahiro Yamada 76954527fe modpost: remove the unused argument of check_sec_ref()
check_sec_ref() does not use the first parameter 'mod'.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-27 16:10:10 +09:00
Masahiro Yamada d6b732666a modpost: fix undefined behavior of is_arm_mapping_symbol()
The return value of is_arm_mapping_symbol() is unpredictable when "$"
is passed in.

strchr(3) says:
  The strchr() and strrchr() functions return a pointer to the matched
  character or NULL if the character is not found. The terminating null
  byte is considered part of the string, so that if c is specified as
  '\0', these functions return a pointer to the terminator.

When str[1] is '\0', strchr("axtd", str[1]) is not NULL, and str[2] is
referenced (i.e. buffer overrun).

Test code
---------

  char str1[] = "abc";
  char str2[] = "ab";

  strcpy(str1, "$");
  strcpy(str2, "$");

  printf("test1: %d\n", is_arm_mapping_symbol(str1));
  printf("test2: %d\n", is_arm_mapping_symbol(str2));

Result
------

  test1: 0
  test2: 1

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-27 16:07:44 +09:00
Alexander Lobakin b5beffa20d modpost: fix removing numeric suffixes
With the `-z unique-symbol` linker flag or any similar mechanism,
it is possible to trigger the following:

ERROR: modpost: "param_set_uint.0" [vmlinux] is a static EXPORT_SYMBOL

The reason is that for now the condition from remove_dot():

if (m && (s[n + m] == '.' || s[n + m] == 0))

which was designed to test if it's a dot or a '\0' after the suffix
is never satisfied.
This is due to that `s[n + m]` always points to the last digit of a
numeric suffix, not on the symbol next to it (from a custom debug
print added to modpost):

param_set_uint.0, s[n + m] is '0', s[n + m + 1] is '\0'

So it's off-by-one and was like that since 2014.

Fix this for the sake of any potential upcoming features, but don't
bother stable-backporting, as it's well hidden -- apart from that
LD flag, it can be triggered only with GCC LTO which never landed
upstream.

Fixes: fcd38ed0ff ("scripts: modpost: fix compilation warning")
Signed-off-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-05-27 16:05:01 +09:00
Yuntao Wang 8d3a75078c scripts/kallsyms: update usage message of the kallsyms program
The kallsyms program supports --absolute-percpu option but does not display
it in the usage message, fix it.

Signed-off-by: Yuntao Wang <ytcoode@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-05-27 15:51:48 +09:00
Jing Leng 23a0cb8e32 kbuild: Fix include path in scripts/Makefile.modpost
When building an external module, if users don't need to separate the
compilation output and source code, they run the following command:
"make -C $(LINUX_SRC_DIR) M=$(PWD)". At this point, "$(KBUILD_EXTMOD)"
and "$(src)" are the same.

If they need to separate them, they run "make -C $(KERNEL_SRC_DIR)
O=$(KERNEL_OUT_DIR) M=$(OUT_DIR) src=$(PWD)". Before running the
command, they need to copy "Kbuild" or "Makefile" to "$(OUT_DIR)" to
prevent compilation failure.

So the kernel should change the included path to avoid the copy operation.

Signed-off-by: Jing Leng <jleng@ambarella.com>
[masahiro: I do not think "M=$(OUT_DIR) src=$(PWD)" is the official way,
but this patch is a nice clean up anyway.]
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-05-27 15:51:48 +09:00
Linus Torvalds 090b39af59 kernel hardening fix for v5.19-rc1
- Avoid GCC plugins needing utsrelease.h build target (Masahiro Yamada)
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Merge tag 'hardening-v5.19-rc1-fix1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull kernel hardening fix from Kees Cook:
 "This fixes an unlucky build race condition when using the GCC plugins,
  noticed by a few folks.

   - Avoid GCC plugins needing utsrelease.h build target (Masahiro Yamada)"

* tag 'hardening-v5.19-rc1-fix1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  gcc-plugins: use KERNELVERSION for plugin version
2022-05-26 21:03:56 -07:00
Linus Torvalds bf9095424d S390:
* ultravisor communication device driver
 
 * fix TEID on terminating storage key ops
 
 RISC-V:
 
 * Added Sv57x4 support for G-stage page table
 
 * Added range based local HFENCE functions
 
 * Added remote HFENCE functions based on VCPU requests
 
 * Added ISA extension registers in ONE_REG interface
 
 * Updated KVM RISC-V maintainers entry to cover selftests support
 
 ARM:
 
 * Add support for the ARMv8.6 WFxT extension
 
 * Guard pages for the EL2 stacks
 
 * Trap and emulate AArch32 ID registers to hide unsupported features
 
 * Ability to select and save/restore the set of hypercalls exposed
   to the guest
 
 * Support for PSCI-initiated suspend in collaboration with userspace
 
 * GICv3 register-based LPI invalidation support
 
 * Move host PMU event merging into the vcpu data structure
 
 * GICv3 ITS save/restore fixes
 
 * The usual set of small-scale cleanups and fixes
 
 x86:
 
 * New ioctls to get/set TSC frequency for a whole VM
 
 * Allow userspace to opt out of hypercall patching
 
 * Only do MSR filtering for MSRs accessed by rdmsr/wrmsr
 
 AMD SEV improvements:
 
 * Add KVM_EXIT_SHUTDOWN metadata for SEV-ES
 
 * V_TSC_AUX support
 
 Nested virtualization improvements for AMD:
 
 * Support for "nested nested" optimizations (nested vVMLOAD/VMSAVE,
   nested vGIF)
 
 * Allow AVIC to co-exist with a nested guest running
 
 * Fixes for LBR virtualizations when a nested guest is running,
   and nested LBR virtualization support
 
 * PAUSE filtering for nested hypervisors
 
 Guest support:
 
 * Decoupling of vcpu_is_preempted from PV spinlocks
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "S390:

   - ultravisor communication device driver

   - fix TEID on terminating storage key ops

  RISC-V:

   - Added Sv57x4 support for G-stage page table

   - Added range based local HFENCE functions

   - Added remote HFENCE functions based on VCPU requests

   - Added ISA extension registers in ONE_REG interface

   - Updated KVM RISC-V maintainers entry to cover selftests support

  ARM:

   - Add support for the ARMv8.6 WFxT extension

   - Guard pages for the EL2 stacks

   - Trap and emulate AArch32 ID registers to hide unsupported features

   - Ability to select and save/restore the set of hypercalls exposed to
     the guest

   - Support for PSCI-initiated suspend in collaboration with userspace

   - GICv3 register-based LPI invalidation support

   - Move host PMU event merging into the vcpu data structure

   - GICv3 ITS save/restore fixes

   - The usual set of small-scale cleanups and fixes

  x86:

   - New ioctls to get/set TSC frequency for a whole VM

   - Allow userspace to opt out of hypercall patching

   - Only do MSR filtering for MSRs accessed by rdmsr/wrmsr

  AMD SEV improvements:

   - Add KVM_EXIT_SHUTDOWN metadata for SEV-ES

   - V_TSC_AUX support

  Nested virtualization improvements for AMD:

   - Support for "nested nested" optimizations (nested vVMLOAD/VMSAVE,
     nested vGIF)

   - Allow AVIC to co-exist with a nested guest running

   - Fixes for LBR virtualizations when a nested guest is running, and
     nested LBR virtualization support

   - PAUSE filtering for nested hypervisors

  Guest support:

   - Decoupling of vcpu_is_preempted from PV spinlocks"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (199 commits)
  KVM: x86: Fix the intel_pt PMI handling wrongly considered from guest
  KVM: selftests: x86: Sync the new name of the test case to .gitignore
  Documentation: kvm: reorder ARM-specific section about KVM_SYSTEM_EVENT_SUSPEND
  x86, kvm: use correct GFP flags for preemption disabled
  KVM: LAPIC: Drop pending LAPIC timer injection when canceling the timer
  x86/kvm: Alloc dummy async #PF token outside of raw spinlock
  KVM: x86: avoid calling x86 emulator without a decoded instruction
  KVM: SVM: Use kzalloc for sev ioctl interfaces to prevent kernel data leak
  x86/fpu: KVM: Set the base guest FPU uABI size to sizeof(struct kvm_xsave)
  s390/uv_uapi: depend on CONFIG_S390
  KVM: selftests: x86: Fix test failure on arch lbr capable platforms
  KVM: LAPIC: Trace LAPIC timer expiration on every vmentry
  KVM: s390: selftest: Test suppression indication on key prot exception
  KVM: s390: Don't indicate suppression on dirtying, failing memop
  selftests: drivers/s390x: Add uvdevice tests
  drivers/s390/char: Add Ultravisor io device
  MAINTAINERS: Update KVM RISC-V entry to cover selftests support
  RISC-V: KVM: Introduce ISA extension register
  RISC-V: KVM: Cleanup stale TLB entries when host CPU changes
  RISC-V: KVM: Add remote HFENCE functions based on VCPU requests
  ...
2022-05-26 14:20:14 -07:00
Linus Torvalds df202b452f Kbuild updates for v5.19
- Add HOSTPKG_CONFIG env variable to allow users to override pkg-config
 
  - Support W=e as a shorthand for KCFLAGS=-Werror
 
  - Fix CONFIG_IKHEADERS build to support toybox cpio
 
  - Add scripts/dummy-tools/pahole to ease distro packagers' life
 
  - Suppress false-positive warnings from checksyscalls.sh for W=2 build
 
  - Factor out the common code of arch/*/boot/install.sh into
    scripts/install.sh
 
  - Support 'kernel-install' tool in scripts/prune-kernel
 
  - Refactor module-versioning to link the symbol versions at the final
    link of vmlinux and modules
 
  - Remove CONFIG_MODULE_REL_CRCS because module-versioning now works in
    an arch-agnostic way
 
  - Refactor modpost, Makefiles
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Merge tag 'kbuild-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Add HOSTPKG_CONFIG env variable to allow users to override pkg-config

 - Support W=e as a shorthand for KCFLAGS=-Werror

 - Fix CONFIG_IKHEADERS build to support toybox cpio

 - Add scripts/dummy-tools/pahole to ease distro packagers' life

 - Suppress false-positive warnings from checksyscalls.sh for W=2 build

 - Factor out the common code of arch/*/boot/install.sh into
   scripts/install.sh

 - Support 'kernel-install' tool in scripts/prune-kernel

 - Refactor module-versioning to link the symbol versions at the final
   link of vmlinux and modules

 - Remove CONFIG_MODULE_REL_CRCS because module-versioning now works in
   an arch-agnostic way

 - Refactor modpost, Makefiles

* tag 'kbuild-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (56 commits)
  genksyms: adjust the output format to modpost
  kbuild: stop merging *.symversions
  kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS
  modpost: extract symbol versions from *.cmd files
  modpost: add sym_find_with_module() helper
  modpost: change the license of EXPORT_SYMBOL to bool type
  modpost: remove left-over cross_compile declaration
  kbuild: record symbol versions in *.cmd files
  kbuild: generate a list of objects in vmlinux
  modpost: move *.mod.c generation to write_mod_c_files()
  modpost: merge add_{intree_flag,retpoline,staging_flag} to add_header
  scripts/prune-kernel: Use kernel-install if available
  kbuild: factor out the common installation code into scripts/install.sh
  modpost: split new_symbol() to symbol allocation and hash table addition
  modpost: make sym_add_exported() always allocate a new symbol
  modpost: make multiple export error
  modpost: dump Module.symvers in the same order of modules.order
  modpost: traverse the namespace_list in order
  modpost: use doubly linked list for dump_lists
  modpost: traverse unresolved symbols in order
  ...
2022-05-26 12:09:50 -07:00
Linus Torvalds 16477cdfef asm-generic changes for 5.19
The asm-generic tree contains three separate changes for linux-5.19:
 
 - The h8300 architecture is retired after it has been effectively
   unmaintained for a number of years. This is the last architecture we
   supported that has no MMU implementation, but there are still a few
   architectures (arm, m68k, riscv, sh and xtensa) that support CPUs with
   and without an MMU.
 
 - A series to add a generic ticket spinlock that can be shared by most
   architectures with a working cmpxchg or ll/sc type atomic, including
   the conversion of riscv, csky and openrisc. This series is also a
   prerequisite for the loongarch64 architecture port that will come as
   a separate pull request.
 
 - A cleanup of some exported uapi header files to ensure they can be
   included from user space without relying on other kernel headers.
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Merge tag 'asm-generic-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic updates from Arnd Bergmann:
 "The asm-generic tree contains three separate changes for linux-5.19:

   - The h8300 architecture is retired after it has been effectively
     unmaintained for a number of years. This is the last architecture
     we supported that has no MMU implementation, but there are still a
     few architectures (arm, m68k, riscv, sh and xtensa) that support
     CPUs with and without an MMU.

   - A series to add a generic ticket spinlock that can be shared by
     most architectures with a working cmpxchg or ll/sc type atomic,
     including the conversion of riscv, csky and openrisc. This series
     is also a prerequisite for the loongarch64 architecture port that
     will come as a separate pull request.

   - A cleanup of some exported uapi header files to ensure they can be
     included from user space without relying on other kernel headers"

* tag 'asm-generic-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  h8300: remove stale bindings and symlink
  sparc: add asm/stat.h to UAPI compile-test coverage
  powerpc: add asm/stat.h to UAPI compile-test coverage
  mips: add asm/stat.h to UAPI compile-test coverage
  riscv: add linux/bpf_perf_event.h to UAPI compile-test coverage
  kbuild: prevent exported headers from including <stdlib.h>, <stdbool.h>
  agpgart.h: do not include <stdlib.h> from exported header
  csky: Move to generic ticket-spinlock
  RISC-V: Move to queued RW locks
  RISC-V: Move to generic spinlocks
  openrisc: Move to ticket-spinlock
  asm-generic: qrwlock: Document the spinlock fairness requirements
  asm-generic: qspinlock: Indicate the use of mixed-size atomics
  asm-generic: ticket-lock: New generic ticket-based spinlock
  remove the h8300 architecture
2022-05-26 10:50:30 -07:00
Linus Torvalds e908305fb2 Add new functions to alloc check for 5.19-rc1
Hi Linus,
 
 Please, pull the following patch that adds new alloc functions to alloc
 with multiplies check.
 
 kvmalloc() and kvzalloc() functions have now 2-factor multiplication
 argument forms kvmalloc_array() and kvcalloc().
 
 Add alloc-with-multiplies checks for these new functions.
 
 Thanks
 --
 Gustavo
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Merge tag 'checkpatch-new-alloc-check-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull checkpatch update from Gustavo Silva:
 "kvmalloc() and kvzalloc() functions have now 2-factor multiplication
  argument forms kvmalloc_array() and kvcalloc().

  Add alloc-with-multiplies checks for these new functions"

* tag 'checkpatch-new-alloc-check-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
  checkpatch: add new alloc functions to alloc with multiplies check
2022-05-25 14:37:00 -07:00
Linus Torvalds 7e062cda7d Networking changes for 5.19.
Core
 ----
 
  - Support TCPv6 segmentation offload with super-segments larger than
    64k bytes using the IPv6 Jumbogram extension header (AKA BIG TCP).
 
  - Generalize skb freeing deferral to per-cpu lists, instead of
    per-socket lists.
 
  - Add a netdev statistic for packets dropped due to L2 address
    mismatch (rx_otherhost_dropped).
 
  - Continue work annotating skb drop reasons.
 
  - Accept alternative netdev names (ALT_IFNAME) in more netlink
    requests.
 
  - Add VLAN support for AF_PACKET SOCK_RAW GSO.
 
  - Allow receiving skb mark from the socket as a cmsg.
 
  - Enable memcg accounting for veth queues, sysctl tables and IPv6.
 
 BPF
 ---
 
  - Add libbpf support for User Statically-Defined Tracing (USDTs).
 
  - Speed up symbol resolution for kprobes multi-link attachments.
 
  - Support storing typed pointers to referenced and unreferenced
    objects in BPF maps.
 
  - Add support for BPF link iterator.
 
  - Introduce access to remote CPU map elements in BPF per-cpu map.
 
  - Allow middle-of-the-road settings for the
    kernel.unprivileged_bpf_disabled sysctl.
 
  - Implement basic types of dynamic pointers e.g. to allow for
    dynamically sized ringbuf reservations without extra memory copies.
 
 Protocols
 ---------
 
  - Retire port only listening_hash table, add a second bind table
    hashed by port and address. Avoid linear list walk when binding
    to very popular ports (e.g. 443).
 
  - Add bridge FDB bulk flush filtering support allowing user space
    to remove all FDB entries matching a condition.
 
  - Introduce accept_unsolicited_na sysctl for IPv6 to implement
    router-side changes for RFC9131.
 
  - Support for MPTCP path manager in user space.
 
  - Add MPTCP support for fallback to regular TCP for connections
    that have never connected additional subflows or transmitted
    out-of-sequence data (partial support for RFC8684 fallback).
 
  - Avoid races in MPTCP-level window tracking, stabilize and improve
    throughput.
 
  - Support lockless operation of GRE tunnels with seq numbers enabled.
 
  - WiFi support for host based BSS color collision detection.
 
  - Add support for SO_TXTIME/SCM_TXTIME on CAN sockets.
 
  - Support transmission w/o flow control in CAN ISOTP (ISO 15765-2).
 
  - Support zero-copy Tx with TLS 1.2 crypto offload (sendfile).
 
  - Allow matching on the number of VLAN tags via tc-flower.
 
  - Add tracepoint for tcp_set_ca_state().
 
 Driver API
 ----------
 
  - Improve error reporting from classifier and action offload.
 
  - Add support for listing line cards in switches (devlink).
 
  - Add helpers for reporting page pool statistics with ethtool -S.
 
  - Add support for reading clock cycles when using PTP virtual clocks,
    instead of having the driver convert to time before reporting.
    This makes it possible to report time from different vclocks.
 
  - Support configuring low-latency Tx descriptor push via ethtool.
 
  - Separate Clause 22 and Clause 45 MDIO accesses more explicitly.
 
 New hardware / drivers
 ----------------------
 
  - Ethernet:
    - Marvell's Octeon NIC PCI Endpoint support (octeon_ep)
    - Sunplus SP7021 SoC (sp7021_emac)
    - Add support for Renesas RZ/V2M (in ravb)
    - Add support for MediaTek mt7986 switches (in mtk_eth_soc)
 
  - Ethernet PHYs:
    - ADIN1100 industrial PHYs (w/ 10BASE-T1L and SQI reporting)
    - TI DP83TD510 PHY
    - Microchip LAN8742/LAN88xx PHYs
 
  - WiFi:
    - Driver for pureLiFi X, XL, XC devices (plfxlc)
    - Driver for Silicon Labs devices (wfx)
    - Support for WCN6750 (in ath11k)
    - Support Realtek 8852ce devices (in rtw89)
 
  - Mobile:
    - MediaTek T700 modems (Intel 5G 5000 M.2 cards)
 
  - CAN:
   - ctucanfd: add support for CTU CAN FD open-source IP core
     from Czech Technical University in Prague
 
 Drivers
 -------
 
  - Delete a number of old drivers still using virt_to_bus().
 
  - Ethernet NICs:
    - intel: support TSO on tunnels MPLS
    - broadcom: support multi-buffer XDP
    - nfp: support VF rate limiting
    - sfc: use hardware tx timestamps for more than PTP
    - mlx5: multi-port eswitch support
    - hyper-v: add support for XDP_REDIRECT
    - atlantic: XDP support (including multi-buffer)
    - macb: improve real-time perf by deferring Tx processing to NAPI
 
  - High-speed Ethernet switches:
    - mlxsw: implement basic line card information querying
    - prestera: add support for traffic policing on ingress and egress
 
  - Embedded Ethernet switches:
    - lan966x: add support for packet DMA (FDMA)
    - lan966x: add support for PTP programmable pins
    - ti: cpsw_new: enable bc/mc storm prevention
 
  - Qualcomm 802.11ax WiFi (ath11k):
    - Wake-on-WLAN support for QCA6390 and WCN6855
    - device recovery (firmware restart) support
    - support setting Specific Absorption Rate (SAR) for WCN6855
    - read country code from SMBIOS for WCN6855/QCA6390
    - enable keep-alive during WoWLAN suspend
    - implement remain-on-channel support
 
  - MediaTek WiFi (mt76):
    - support Wireless Ethernet Dispatch offloading packet movement
      between the Ethernet switch and WiFi interfaces
    - non-standard VHT MCS10-11 support
    - mt7921 AP mode support
    - mt7921 IPv6 NS offload support
 
  - Ethernet PHYs:
    - micrel: ksz9031/ksz9131: cabletest support
    - lan87xx: SQI support for T1 PHYs
    - lan937x: add interrupt support for link detection
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core
  ----

   - Support TCPv6 segmentation offload with super-segments larger than
     64k bytes using the IPv6 Jumbogram extension header (AKA BIG TCP).

   - Generalize skb freeing deferral to per-cpu lists, instead of
     per-socket lists.

   - Add a netdev statistic for packets dropped due to L2 address
     mismatch (rx_otherhost_dropped).

   - Continue work annotating skb drop reasons.

   - Accept alternative netdev names (ALT_IFNAME) in more netlink
     requests.

   - Add VLAN support for AF_PACKET SOCK_RAW GSO.

   - Allow receiving skb mark from the socket as a cmsg.

   - Enable memcg accounting for veth queues, sysctl tables and IPv6.

  BPF
  ---

   - Add libbpf support for User Statically-Defined Tracing (USDTs).

   - Speed up symbol resolution for kprobes multi-link attachments.

   - Support storing typed pointers to referenced and unreferenced
     objects in BPF maps.

   - Add support for BPF link iterator.

   - Introduce access to remote CPU map elements in BPF per-cpu map.

   - Allow middle-of-the-road settings for the
     kernel.unprivileged_bpf_disabled sysctl.

   - Implement basic types of dynamic pointers e.g. to allow for
     dynamically sized ringbuf reservations without extra memory copies.

  Protocols
  ---------

   - Retire port only listening_hash table, add a second bind table
     hashed by port and address. Avoid linear list walk when binding to
     very popular ports (e.g. 443).

   - Add bridge FDB bulk flush filtering support allowing user space to
     remove all FDB entries matching a condition.

   - Introduce accept_unsolicited_na sysctl for IPv6 to implement
     router-side changes for RFC9131.

   - Support for MPTCP path manager in user space.

   - Add MPTCP support for fallback to regular TCP for connections that
     have never connected additional subflows or transmitted
     out-of-sequence data (partial support for RFC8684 fallback).

   - Avoid races in MPTCP-level window tracking, stabilize and improve
     throughput.

   - Support lockless operation of GRE tunnels with seq numbers enabled.

   - WiFi support for host based BSS color collision detection.

   - Add support for SO_TXTIME/SCM_TXTIME on CAN sockets.

   - Support transmission w/o flow control in CAN ISOTP (ISO 15765-2).

   - Support zero-copy Tx with TLS 1.2 crypto offload (sendfile).

   - Allow matching on the number of VLAN tags via tc-flower.

   - Add tracepoint for tcp_set_ca_state().

  Driver API
  ----------

   - Improve error reporting from classifier and action offload.

   - Add support for listing line cards in switches (devlink).

   - Add helpers for reporting page pool statistics with ethtool -S.

   - Add support for reading clock cycles when using PTP virtual clocks,
     instead of having the driver convert to time before reporting. This
     makes it possible to report time from different vclocks.

   - Support configuring low-latency Tx descriptor push via ethtool.

   - Separate Clause 22 and Clause 45 MDIO accesses more explicitly.

  New hardware / drivers
  ----------------------

   - Ethernet:
      - Marvell's Octeon NIC PCI Endpoint support (octeon_ep)
      - Sunplus SP7021 SoC (sp7021_emac)
      - Add support for Renesas RZ/V2M (in ravb)
      - Add support for MediaTek mt7986 switches (in mtk_eth_soc)

   - Ethernet PHYs:
      - ADIN1100 industrial PHYs (w/ 10BASE-T1L and SQI reporting)
      - TI DP83TD510 PHY
      - Microchip LAN8742/LAN88xx PHYs

   - WiFi:
      - Driver for pureLiFi X, XL, XC devices (plfxlc)
      - Driver for Silicon Labs devices (wfx)
      - Support for WCN6750 (in ath11k)
      - Support Realtek 8852ce devices (in rtw89)

   - Mobile:
      - MediaTek T700 modems (Intel 5G 5000 M.2 cards)

   - CAN:
      - ctucanfd: add support for CTU CAN FD open-source IP core from
        Czech Technical University in Prague

  Drivers
  -------

   - Delete a number of old drivers still using virt_to_bus().

   - Ethernet NICs:
      - intel: support TSO on tunnels MPLS
      - broadcom: support multi-buffer XDP
      - nfp: support VF rate limiting
      - sfc: use hardware tx timestamps for more than PTP
      - mlx5: multi-port eswitch support
      - hyper-v: add support for XDP_REDIRECT
      - atlantic: XDP support (including multi-buffer)
      - macb: improve real-time perf by deferring Tx processing to NAPI

   - High-speed Ethernet switches:
      - mlxsw: implement basic line card information querying
      - prestera: add support for traffic policing on ingress and egress

   - Embedded Ethernet switches:
      - lan966x: add support for packet DMA (FDMA)
      - lan966x: add support for PTP programmable pins
      - ti: cpsw_new: enable bc/mc storm prevention

   - Qualcomm 802.11ax WiFi (ath11k):
      - Wake-on-WLAN support for QCA6390 and WCN6855
      - device recovery (firmware restart) support
      - support setting Specific Absorption Rate (SAR) for WCN6855
      - read country code from SMBIOS for WCN6855/QCA6390
      - enable keep-alive during WoWLAN suspend
      - implement remain-on-channel support

   - MediaTek WiFi (mt76):
      - support Wireless Ethernet Dispatch offloading packet movement
        between the Ethernet switch and WiFi interfaces
      - non-standard VHT MCS10-11 support
      - mt7921 AP mode support
      - mt7921 IPv6 NS offload support

   - Ethernet PHYs:
      - micrel: ksz9031/ksz9131: cabletest support
      - lan87xx: SQI support for T1 PHYs
      - lan937x: add interrupt support for link detection"

* tag 'net-next-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1809 commits)
  ptp: ocp: Add firmware header checks
  ptp: ocp: fix PPS source selector debugfs reporting
  ptp: ocp: add .init function for sma_op vector
  ptp: ocp: vectorize the sma accessor functions
  ptp: ocp: constify selectors
  ptp: ocp: parameterize input/output sma selectors
  ptp: ocp: revise firmware display
  ptp: ocp: add Celestica timecard PCI ids
  ptp: ocp: Remove #ifdefs around PCI IDs
  ptp: ocp: 32-bit fixups for pci start address
  Revert "net/smc: fix listen processing for SMC-Rv2"
  ath6kl: Use cc-disable-warning to disable -Wdangling-pointer
  selftests/bpf: Dynptr tests
  bpf: Add dynptr data slices
  bpf: Add bpf_dynptr_read and bpf_dynptr_write
  bpf: Dynptr support for ring buffers
  bpf: Add bpf_dynptr_from_mem for local dynptrs
  bpf: Add verifier support for dynptrs
  bpf: Suppress 'passing zero to PTR_ERR' warning
  bpf: Introduce bpf_arch_text_invalidate for bpf_prog_pack
  ...
2022-05-25 12:22:58 -07:00
Linus Torvalds 7cf6a8a17f tpmdd updates for v5.19-rc1
- Strictened validation of key hashes for SYSTEM_BLACKLIST_HASH_LIST.  An
   invalid hash format causes a compilation error.  Previously, they got
   included to the kernel binary but were silently ignored at run-time.
 - Allow root user to append new hashes to the blacklist keyring.
 - Trusted keys backed with Cryptographic Acceleration and Assurance Module
   (CAAM), which part of some of the new NXP's SoC's.  Now there is total
   three hardware backends for trusted keys: TPM, ARM TEE and CAAM.
 - A scattered set of fixes and small improvements for the TPM driver.
 
 Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
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Merge tag 'tpmdd-next-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

Pull tpm updates from Jarkko Sakkinen:

 - Tightened validation of key hashes for SYSTEM_BLACKLIST_HASH_LIST. An
   invalid hash format causes a compilation error. Previously, they got
   included to the kernel binary but were silently ignored at run-time.

 - Allow root user to append new hashes to the blacklist keyring.

 - Trusted keys backed with Cryptographic Acceleration and Assurance
   Module (CAAM), which part of some of the new NXP's SoC's. Now there
   is total three hardware backends for trusted keys: TPM, ARM TEE and
   CAAM.

 - A scattered set of fixes and small improvements for the TPM driver.

* tag 'tpmdd-next-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
  MAINTAINERS: add KEYS-TRUSTED-CAAM
  doc: trusted-encrypted: describe new CAAM trust source
  KEYS: trusted: Introduce support for NXP CAAM-based trusted keys
  crypto: caam - add in-kernel interface for blob generator
  crypto: caam - determine whether CAAM supports blob encap/decap
  KEYS: trusted: allow use of kernel RNG for key material
  KEYS: trusted: allow use of TEE as backend without TCG_TPM support
  tpm: Add field upgrade mode support for Infineon TPM2 modules
  tpm: Fix buffer access in tpm2_get_tpm_pt()
  char: tpm: cr50_i2c: Suppress duplicated error message in .remove()
  tpm: cr50: Add new device/vendor ID 0x504a6666
  tpm: Remove read16/read32/write32 calls from tpm_tis_phy_ops
  tpm: ibmvtpm: Correct the return value in tpm_ibmvtpm_probe()
  tpm/tpm_ftpm_tee: Return true/false (not 1/0) from bool functions
  certs: Explain the rationale to call panic()
  certs: Allow root user to append signed hashes to the blacklist keyring
  certs: Check that builtin blacklist hashes are valid
  certs: Make blacklist_vet_description() more strict
  certs: Factor out the blacklist hash creation
  tools/certs: Add print-cert-tbs-hash.sh
2022-05-24 13:16:50 -07:00
Linus Torvalds efd1df1982 selinux/stable-5.19 PR 20220523
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Merge tag 'selinux-pr-20220523' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull selinux updates from Paul Moore:
 "We've got twelve patches queued for v5.19, with most being fairly
  minor. The highlights are below:

   - The checkreqprot and runtime disable knobs have been deprecated for
     some time with no active users that we can find. In an effort to
     move things along we are adding a pause when the knobs are used to
     help make the deprecation more noticeable in case anyone is still
     using these hacks in the shadows.

   - We've added the anonymous inode class name to the AVC audit records
     when anonymous inodes are involved. This should make writing policy
     easier when anonymous inodes are involved.

   - More constification work. This is fairly straightforward and the
     source of most of the diffstat.

   - The usual minor cleanups: remove unnecessary assignments, assorted
     style/checkpatch fixes, kdoc fixes, macro while-loop
     encapsulations, #include tweaks, etc"

* tag 'selinux-pr-20220523' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  security: declare member holding string literal const
  selinux: log anon inode class name
  selinux: declare data arrays const
  selinux: fix indentation level of mls_ops block
  selinux: include necessary headers in headers
  selinux: avoid extra semicolon
  selinux: update parameter documentation
  selinux: resolve checkpatch errors
  selinux: don't sleep when CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE is true
  selinux: checkreqprot is deprecated, add some ssleep() discomfort
  selinux: runtime disable is deprecated, add some ssleep() discomfort
  selinux: Remove redundant assignments
2022-05-24 13:06:32 -07:00
Linus Torvalds 0bf13a8436 kernel-hardening updates for v5.19-rc1
- usercopy hardening expanded to check other allocation types
   (Matthew Wilcox, Yuanzheng Song)
 
 - arm64 stackleak behavioral improvements (Mark Rutland)
 
 - arm64 CFI code gen improvement (Sami Tolvanen)
 
 - LoadPin LSM block dev API adjustment (Christoph Hellwig)
 
 - Clang randstruct support (Bill Wendling, Kees Cook)
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Merge tag 'kernel-hardening-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull kernel hardening updates from Kees Cook:

 - usercopy hardening expanded to check other allocation types (Matthew
   Wilcox, Yuanzheng Song)

 - arm64 stackleak behavioral improvements (Mark Rutland)

 - arm64 CFI code gen improvement (Sami Tolvanen)

 - LoadPin LSM block dev API adjustment (Christoph Hellwig)

 - Clang randstruct support (Bill Wendling, Kees Cook)

* tag 'kernel-hardening-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (34 commits)
  loadpin: stop using bdevname
  mm: usercopy: move the virt_addr_valid() below the is_vmalloc_addr()
  gcc-plugins: randstruct: Remove cast exception handling
  af_unix: Silence randstruct GCC plugin warning
  niu: Silence randstruct warnings
  big_keys: Use struct for internal payload
  gcc-plugins: Change all version strings match kernel
  randomize_kstack: Improve docs on requirements/rationale
  lkdtm/stackleak: fix CONFIG_GCC_PLUGIN_STACKLEAK=n
  arm64: entry: use stackleak_erase_on_task_stack()
  stackleak: add on/off stack variants
  lkdtm/stackleak: check stack boundaries
  lkdtm/stackleak: prevent unexpected stack usage
  lkdtm/stackleak: rework boundary management
  lkdtm/stackleak: avoid spurious failure
  stackleak: rework poison scanning
  stackleak: rework stack high bound handling
  stackleak: clarify variable names
  stackleak: rework stack low bound handling
  stackleak: remove redundant check
  ...
2022-05-24 12:27:09 -07:00
Linus Torvalds 22922deae1 Objtool changes for this cycle were:
- Comprehensive interface overhaul:
    =================================
 
    Objtool's interface has some issues:
 
      - Several features are done unconditionally, without any way to turn
        them off.  Some of them might be surprising.  This makes objtool
        tricky to use, and prevents porting individual features to other
        arches.
 
      - The config dependencies are too coarse-grained.  Objtool enablement is
        tied to CONFIG_STACK_VALIDATION, but it has several other features
        independent of that.
 
      - The objtool subcmds ("check" and "orc") are clumsy: "check" is really
        a subset of "orc", so it has all the same options.  The subcmd model
        has never really worked for objtool, as it only has a single purpose:
        "do some combination of things on an object file".
 
      - The '--lto' and '--vmlinux' options are nonsensical and have
        surprising behavior.
 
    Overhaul the interface:
 
       - get rid of subcmds
 
       - make all features individually selectable
 
       - remove and/or clarify confusing/obsolete options
 
       - update the documentation
 
       - fix some bugs found along the way
 
  - Fix x32 regression
 
  - Fix Kbuild cleanup bugs
 
  - Add scripts/objdump-func helper script to disassemble a single function from an object file.
 
  - Rewrite scripts/faddr2line to be section-aware, by basing it on 'readelf',
    moving it away from 'nm', which doesn't handle multiple sections well,
    which can result in decoding failure.
 
  - Rewrite & fix symbol handling - which had a number of bugs wrt. object files
    that don't have global symbols - which is rare but possible. Also fix a
    bunch of symbol handling bugs found along the way.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool updates from Ingo Molnar:

 - Comprehensive interface overhaul:
   =================================

   Objtool's interface has some issues:

     - Several features are done unconditionally, without any way to
       turn them off. Some of them might be surprising. This makes
       objtool tricky to use, and prevents porting individual features
       to other arches.

     - The config dependencies are too coarse-grained. Objtool
       enablement is tied to CONFIG_STACK_VALIDATION, but it has several
       other features independent of that.

     - The objtool subcmds ("check" and "orc") are clumsy: "check" is
       really a subset of "orc", so it has all the same options.

       The subcmd model has never really worked for objtool, as it only
       has a single purpose: "do some combination of things on an object
       file".

     - The '--lto' and '--vmlinux' options are nonsensical and have
       surprising behavior.

   Overhaul the interface:

      - get rid of subcmds

      - make all features individually selectable

      - remove and/or clarify confusing/obsolete options

      - update the documentation

      - fix some bugs found along the way

 - Fix x32 regression

 - Fix Kbuild cleanup bugs

 - Add scripts/objdump-func helper script to disassemble a single
   function from an object file.

 - Rewrite scripts/faddr2line to be section-aware, by basing it on
   'readelf', moving it away from 'nm', which doesn't handle multiple
   sections well, which can result in decoding failure.

 - Rewrite & fix symbol handling - which had a number of bugs wrt.
   object files that don't have global symbols - which is rare but
   possible. Also fix a bunch of symbol handling bugs found along the
   way.

* tag 'objtool-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  objtool: Fix objtool regression on x32 systems
  objtool: Fix symbol creation
  scripts/faddr2line: Fix overlapping text section failures
  scripts: Create objdump-func helper script
  objtool: Remove libsubcmd.a when make clean
  objtool: Remove inat-tables.c when make clean
  objtool: Update documentation
  objtool: Remove --lto and --vmlinux in favor of --link
  objtool: Add HAVE_NOINSTR_VALIDATION
  objtool: Rename "VMLINUX_VALIDATION" -> "NOINSTR_VALIDATION"
  objtool: Make noinstr hacks optional
  objtool: Make jump label hack optional
  objtool: Make static call annotation optional
  objtool: Make stack validation frame-pointer-specific
  objtool: Add CONFIG_OBJTOOL
  objtool: Extricate sls from stack validation
  objtool: Rework ibt and extricate from stack validation
  objtool: Make stack validation optional
  objtool: Add option to print section addresses
  objtool: Don't print parentheses in function addresses
  ...
2022-05-24 10:36:38 -07:00
Linus Torvalds 2319be1356 Locking changes in this cycle were:
- rwsem cleanups & optimizations/fixes:
     - Conditionally wake waiters in reader/writer slowpaths
     - Always try to wake waiters in out_nolock path
 
  - Add try_cmpxchg64() implementation, with arch optimizations - and use it to
    micro-optimize sched_clock_{local,remote}()
 
  - Various force-inlining fixes to address objdump instrumentation-check warnings
 
  - Add lock contention tracepoints:
 
     lock:contention_begin
     lock:contention_end
 
  - Misc smaller fixes & cleanups
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:

 - rwsem cleanups & optimizations/fixes:
    - Conditionally wake waiters in reader/writer slowpaths
    - Always try to wake waiters in out_nolock path

 - Add try_cmpxchg64() implementation, with arch optimizations - and use
   it to micro-optimize sched_clock_{local,remote}()

 - Various force-inlining fixes to address objdump instrumentation-check
   warnings

 - Add lock contention tracepoints:

    lock:contention_begin
    lock:contention_end

 - Misc smaller fixes & cleanups

* tag 'locking-core-2022-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/clock: Use try_cmpxchg64 in sched_clock_{local,remote}
  locking/atomic/x86: Introduce arch_try_cmpxchg64
  locking/atomic: Add generic try_cmpxchg64 support
  futex: Remove a PREEMPT_RT_FULL reference.
  locking/qrwlock: Change "queue rwlock" to "queued rwlock"
  lockdep: Delete local_irq_enable_in_hardirq()
  locking/mutex: Make contention tracepoints more consistent wrt adaptive spinning
  locking: Apply contention tracepoints in the slow path
  locking: Add lock contention tracepoints
  locking/rwsem: Always try to wake waiters in out_nolock path
  locking/rwsem: Conditionally wake waiters in reader/writer slowpaths
  locking/rwsem: No need to check for handoff bit if wait queue empty
  lockdep: Fix -Wunused-parameter for _THIS_IP_
  x86/mm: Force-inline __phys_addr_nodebug()
  x86/kvm/svm: Force-inline GHCB accessors
  task_stack, x86/cea: Force-inline stack helpers
2022-05-24 10:18:23 -07:00
Masahiro Yamada d37aa2efc8 gcc-plugins: use KERNELVERSION for plugin version
Commit 61f60bac8c ("gcc-plugins: Change all version strings match
kernel") broke parallel builds.

Instead of adding the dependency between GCC plugins and utsrelease.h,
let's use KERNELVERSION, which does not require any build artifact.

Another reason why I want to avoid utsrelease.h is because it depends
on CONFIG_LOCALVERSION(_AUTO) and localversion* files.

(include/generated/utsrelease.h depends on include/config/kernel.release,
which is generated by scripts/setlocalversion)

I want to keep host tools independent of the kernel configuration.

There is no good reason to rebuild GCC plugins just because of
CONFIG_LOCALVERSION being changed.

We just want to associate the plugin versions with the kernel source
version. KERNELVERSION should be enough for our purpose.

Fixes: 61f60bac8c ("gcc-plugins: Change all version strings match kernel")
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/linux-mm/202205230239.EZxeZ3Fv-lkp@intel.com
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220524135541.1453693-1-masahiroy@kernel.org
2022-05-24 08:25:16 -07:00
Masahiro Yamada 5ce2176b81 genksyms: adjust the output format to modpost
Make genksyms output symbol versions in the format modpost expects,
so the 'sed' is unneeded.

This commit makes *.symversions completely unneeded.

I will keep *.symversions in .gitignore and 'make clean' for a while.
Otherwise, 'git status' might be surprising.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-05-24 16:33:20 +09:00
Masahiro Yamada 7375cbcf23 kbuild: stop merging *.symversions
Now modpost reads symbol versions from .*.cmd files.

The merged *.symversions are no longer needed.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-05-24 16:33:20 +09:00
Masahiro Yamada 7b4537199a kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS
include/{linux,asm-generic}/export.h defines a weak symbol, __crc_*
as a placeholder.

Genksyms writes the version CRCs into the linker script, which will be
used for filling the __crc_* symbols. The linker script format depends
on CONFIG_MODULE_REL_CRCS. If it is enabled, __crc_* holds the offset
to the reference of CRC.

It is time to get rid of this complexity.

Now that modpost parses text files (.*.cmd) to collect all the CRCs,
it can generate C code that will be linked to the vmlinux or modules.

Generate a new C file, .vmlinux.export.c, which contains the CRCs of
symbols exported by vmlinux. It is compiled and linked to vmlinux in
scripts/link-vmlinux.sh.

Put the CRCs of symbols exported by modules into the existing *.mod.c
files. No additional build step is needed for modules. As before,
*.mod.c are compiled and linked to *.ko in scripts/Makefile.modfinal.

No linker magic is used here. The new C implementation works in the
same way, whether CONFIG_RELOCATABLE is enabled or not.
CONFIG_MODULE_REL_CRCS is no longer needed.

Previously, Kbuild invoked additional $(LD) to update the CRCs in
objects, but this step is unneeded too.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nicolas Schier <nicolas@fjasle.eu>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-05-24 16:33:20 +09:00
Linus Torvalds 95fbef17e8 s390 updates for 5.19 merge window
- Make use of the IBM z16 processor activity instrumentation facility
   to count cryptography operations: add a new PMU device driver so
   that perf can make use of this.
 
 - Add new IBM z16 extended counter set to cpumf support.
 
 - Add vdso randomization support.
 
 - Add missing KCSAN instrumentation to barriers and spinlocks, which
   should make s390's KCSAN support complete.
 
 - Add support for IPL-complete-control facility: notify the hypervisor
   that kexec finished work and the kernel starts.
 
 - Improve error logging for PCI.
 
 - Various small changes to workaround llvm's integrated assembler
   limitations, and one bug, to make it finally possible to compile the
   kernel with llvm's integrated assembler. This also requires to raise
   the minimum clang version to 14.0.0.
 
 - Various other small enhancements, bug fixes, and cleanups all over
   the place.
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Merge tag 's390-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

 - Make use of the IBM z16 processor activity instrumentation facility
   to count cryptography operations: add a new PMU device driver so that
   perf can make use of this.

 - Add new IBM z16 extended counter set to cpumf support.

 - Add vdso randomization support.

 - Add missing KCSAN instrumentation to barriers and spinlocks, which
   should make s390's KCSAN support complete.

 - Add support for IPL-complete-control facility: notify the hypervisor
   that kexec finished work and the kernel starts.

 - Improve error logging for PCI.

 - Various small changes to workaround llvm's integrated assembler
   limitations, and one bug, to make it finally possible to compile the
   kernel with llvm's integrated assembler. This also requires to raise
   the minimum clang version to 14.0.0.

 - Various other small enhancements, bug fixes, and cleanups all over
   the place.

* tag 's390-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits)
  s390/head: get rid of 31 bit leftovers
  scripts/min-tool-version.sh: raise minimum clang version to 14.0.0 for s390
  s390/boot: do not emit debug info for assembly with llvm's IAS
  s390/boot: workaround llvm IAS bug
  s390/purgatory: workaround llvm's IAS limitations
  s390/entry: workaround llvm's IAS limitations
  s390/alternatives: remove padding generation code
  s390/alternatives: provide identical sized orginal/alternative sequences
  s390/cpumf: add new extended counter set for IBM z16
  s390/preempt: disable __preempt_count_add() optimization for PROFILE_ALL_BRANCHES
  s390/stp: clock_delta should be signed
  s390/stp: fix todoff size
  s390/pai: add support for cryptography counters
  entry: Rename arch_check_user_regs() to arch_enter_from_user_mode()
  s390/compat: cleanup compat_linux.h header file
  s390/entry: remove broken and not needed code
  s390/boot: convert parmarea to C
  s390/boot: convert initial lowcore to C
  s390/ptrace: move short psw definitions to ptrace header file
  s390/head: initialize all new psws
  ...
2022-05-23 21:01:30 -07:00
Linus Torvalds c5a3d3c01e - Remove a bunch of chicken bit options to turn off CPU features which
are not really needed anymore
 
 - Misc fixes and cleanups
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Merge tag 'x86_cpu_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 CPU feature updates from Borislav Petkov:

 - Remove a bunch of chicken bit options to turn off CPU features which
   are not really needed anymore

 - Misc fixes and cleanups

* tag 'x86_cpu_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/speculation: Add missing prototype for unpriv_ebpf_notify()
  x86/pm: Fix false positive kmemleak report in msr_build_context()
  x86/speculation/srbds: Do not try to turn mitigation off when not supported
  x86/cpu: Remove "noclflush"
  x86/cpu: Remove "noexec"
  x86/cpu: Remove "nosmep"
  x86/cpu: Remove CONFIG_X86_SMAP and "nosmap"
  x86/cpu: Remove "nosep"
  x86/cpu: Allow feature bit names from /proc/cpuinfo in clearcpuid=
2022-05-23 18:01:31 -07:00
Jakub Kicinski 1ef0736c07 Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
pull-request: bpf-next 2022-05-23

We've added 113 non-merge commits during the last 26 day(s) which contain
a total of 121 files changed, 7425 insertions(+), 1586 deletions(-).

The main changes are:

1) Speed up symbol resolution for kprobes multi-link attachments, from Jiri Olsa.

2) Add BPF dynamic pointer infrastructure e.g. to allow for dynamically sized ringbuf
   reservations without extra memory copies, from Joanne Koong.

3) Big batch of libbpf improvements towards libbpf 1.0 release, from Andrii Nakryiko.

4) Add BPF link iterator to traverse links via seq_file ops, from Dmitrii Dolgov.

5) Add source IP address to BPF tunnel key infrastructure, from Kaixi Fan.

6) Refine unprivileged BPF to disable only object-creating commands, from Alan Maguire.

7) Fix JIT blinding of ld_imm64 when they point to subprogs, from Alexei Starovoitov.

8) Add BPF access to mptcp_sock structures and their meta data, from Geliang Tang.

9) Add new BPF helper for access to remote CPU's BPF map elements, from Feng Zhou.

10) Allow attaching 64-bit cookie to BPF link of fentry/fexit/fmod_ret, from Kui-Feng Lee.

11) Follow-ups to typed pointer support in BPF maps, from Kumar Kartikeya Dwivedi.

12) Add busy-poll test cases to the XSK selftest suite, from Magnus Karlsson.

13) Improvements in BPF selftest test_progs subtest output, from Mykola Lysenko.

14) Fill bpf_prog_pack allocator areas with illegal instructions, from Song Liu.

15) Add generic batch operations for BPF map-in-map cases, from Takshak Chahande.

16) Make bpf_jit_enable more user friendly when permanently on 1, from Tiezhu Yang.

17) Fix an array overflow in bpf_trampoline_get_progs(), from Yuntao Wang.

====================

Link: https://lore.kernel.org/r/20220523223805.27931-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-23 16:07:14 -07:00
Joanne Koong 97e03f5210 bpf: Add verifier support for dynptrs
This patch adds the bulk of the verifier work for supporting dynamic
pointers (dynptrs) in bpf.

A bpf_dynptr is opaque to the bpf program. It is a 16-byte structure
defined internally as:

struct bpf_dynptr_kern {
    void *data;
    u32 size;
    u32 offset;
} __aligned(8);

The upper 8 bits of *size* is reserved (it contains extra metadata about
read-only status and dynptr type). Consequently, a dynptr only supports
memory less than 16 MB.

There are different types of dynptrs (eg malloc, ringbuf, ...). In this
patchset, the most basic one, dynptrs to a bpf program's local memory,
is added. For now only local memory that is of reg type PTR_TO_MAP_VALUE
is supported.

In the verifier, dynptr state information will be tracked in stack
slots. When the program passes in an uninitialized dynptr
(ARG_PTR_TO_DYNPTR | MEM_UNINIT), the stack slots corresponding
to the frame pointer where the dynptr resides at are marked
STACK_DYNPTR. For helper functions that take in initialized dynptrs (eg
bpf_dynptr_read + bpf_dynptr_write which are added later in this
patchset), the verifier enforces that the dynptr has been initialized
properly by checking that their corresponding stack slots have been
marked as STACK_DYNPTR.

The 6th patch in this patchset adds test cases that the verifier should
successfully reject, such as for example attempting to use a dynptr
after doing a direct write into it inside the bpf program.

Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/20220523210712.3641569-2-joannelkoong@gmail.com
2022-05-23 14:30:17 -07:00
Masahiro Yamada f292d875d0 modpost: extract symbol versions from *.cmd files
Currently, CONFIG_MODVERSIONS needs extra link to embed the symbol
versions into ELF objects. Then, modpost extracts the version CRCs
from them.

The following figures show how it currently works, and how I am trying
to change it.

Current implementation
======================
                                                           |----------|
                 embed CRC      -------------------------->| final    |
       $(CC)       $(LD)       /  |---------|              | link for |
       -----> *.o -------> *.o -->| modpost |              | vmlinux  |
      /              /            |         |-- *.mod.c -->| or       |
     / genksyms     /             |---------|              | module   |
  *.c ------> *.symversions                                |----------|

Genksyms outputs the calculated CRCs in the form of linker script
(*.symversions), which is used by $(LD) to update the object.

If CONFIG_LTO_CLANG=y, the build process is much more complex. Embedding
the CRCs is postponed until the LLVM bitcode is converted into ELF,
creating another intermediate *.prelink.o.

However, this complexity is unneeded. There is no reason why we must
embed version CRCs in objects so early.

There is final link stage for vmlinux (scripts/link-vmlinux.sh) and
modules (scripts/Makefile.modfinal). We can link CRCs at the very last
moment.

New implementation
==================
                                                           |----------|
                   --------------------------------------->| final    |
       $(CC)      /    |---------|                         | link for |
       -----> *.o ---->|         |                         | vmlinux  |
      /                | modpost |--- .vmlinux.export.c -->| or       |
     / genksyms        |         |--- *.mod.c ------------>| module   |
  *.c ------> *.cmd -->|---------|                         |----------|

Pass the symbol versions to modpost as separate text data, which are
available in *.cmd files.

This commit changes modpost to extract CRCs from *.cmd files instead of
from ELF objects.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-05-24 00:53:06 +09:00
Masahiro Yamada 69c4cc99bb modpost: add sym_find_with_module() helper
find_symbol() returns the first symbol found in the hash table. This
table is global, so it may return a symbol from an unexpected module.

There is a case where we want to search for a symbol with a given name
in a specified module.

Add sym_find_with_module(), which receives the module pointer as the
second argument. It is equivalent to find_module() if NULL is passed
as the module pointer.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
2022-05-24 00:52:12 +09:00
Mickaël Salaün addf466389 certs: Check that builtin blacklist hashes are valid
Add and use a check-blacklist-hashes.awk script to make sure that the
builtin blacklist hashes set with CONFIG_SYSTEM_BLACKLIST_HASH_LIST will
effectively be taken into account as blacklisted hashes.  This is useful
to debug invalid hash formats, and it make sure that previous hashes
which could have been loaded in the kernel, but silently ignored, are
now noticed and deal with by the user at kernel build time.

This also prevent stricter blacklist key description checking (provided
by following commits) to failed for builtin hashes.

Update CONFIG_SYSTEM_BLACKLIST_HASH_LIST help to explain the content of
a hash string and how to generate certificate ones.

Cc: David Howells <dhowells@redhat.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Eric Snowberg <eric.snowberg@oracle.com>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Mickaël Salaün <mic@linux.microsoft.com>
Link: https://lore.kernel.org/r/20210712170313.884724-3-mic@digikod.net
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2022-05-23 18:47:49 +03:00
Geliang Tang 3bc253c2e6 bpf: Add bpf_skc_to_mptcp_sock_proto
This patch implements a new struct bpf_func_proto, named
bpf_skc_to_mptcp_sock_proto. Define a new bpf_id BTF_SOCK_TYPE_MPTCP,
and a new helper bpf_skc_to_mptcp_sock(), which invokes another new
helper bpf_mptcp_sock_from_subflow() in net/mptcp/bpf.c to get struct
mptcp_sock from a given subflow socket.

v2: Emit BTF type, add func_id checks in verifier.c and bpf_trace.c,
remove build check for CONFIG_BPF_JIT
v5: Drop EXPORT_SYMBOL (Martin)

Co-developed-by: Nicolas Rybowski <nicolas.rybowski@tessares.net>
Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Nicolas Rybowski <nicolas.rybowski@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220519233016.105670-2-mathew.j.martineau@linux.intel.com
2022-05-20 15:29:00 -07:00
Arnd Bergmann b2441b3bdc h8300: remove stale bindings and symlink
These four files are left over from the h8300 removal.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-05-20 22:40:56 +02:00
Cristian Ciocaltea 7394d2ebb6 scripts/tags.sh: Invoke 'realpath' via 'xargs'
When COMPILED_SOURCE is set, running

  make ARCH=x86_64 COMPILED_SOURCE=1 cscope tags

could throw the following errors:

scripts/tags.sh: line 98: /usr/bin/realpath: Argument list too long
cscope: no source files found
scripts/tags.sh: line 98: /usr/bin/realpath: Argument list too long
ctags: No files specified. Try "ctags --help".

This is most likely to happen when the kernel is configured to build a
large number of modules, which has the consequence of passing too many
arguments when calling 'realpath' in 'all_compiled_sources()'.

Let's improve this by invoking 'realpath' through 'xargs', which takes
care of properly limiting the argument list.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20220516234646.531208-1-cristian.ciocaltea@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-19 18:54:40 +02:00
Thomas Gleixner e020835138 scripts/spdxcheck: Exclude top-level README
Nothing copyrightable to see here.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-18 15:35:42 +02:00
Thomas Gleixner 2ab99ce978 scripts/spdxcheck: Exclude MAINTAINERS/CREDITS
Listings of maintainers and people who deserve credits are not really
interesting in terms of copyright. The usage of these files outside of the
kernel is pointless and the file format is trivial. No point in chasing
them or slapping a SPDX identifier into them just because.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-18 15:35:38 +02:00
Thomas Gleixner 2fb9771336 scripts/spdxcheck: Exclude config directories
Kernel configuration files like default configs are machine generated and
pretty useless outside of the kernel context.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-18 15:35:35 +02:00
Thomas Gleixner 0509b270a3 scripts/spdxcheck: Put excluded files and directories into a separate file
The files and directories which are excluded from scanning are currently
hard coded in the script. That's not maintainable and not accessible for
external tools.

Move the files and directories which should be excluded into a file.  The
default file is scripts/spdxexclude. This can be overridden with the
'-e $FILE' command line option.

The file format and syntax is similar to the .gitignore file.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-18 15:34:33 +02:00
Thomas Gleixner 67924b7141 scripts/spdxcheck: Add option to display files without SPDX
Makes life easier when chasing the missing ones. Is activated with '-f'
on the command line.

# scripts/spdxcheck.py -f kernel/
Files without SPDX:
    ./kernel/cpu.c
    ./kernel/kmod.c
    ./kernel/relay.c
    ./kernel/bpf/offload.c
    ./kernel/bpf/preload/.gitignore
    ./kernel/bpf/preload/iterators/README
    ./kernel/bpf/ringbuf.c
    ./kernel/cgroup/cgroup.c
    ./kernel/cgroup/cpuset.c
    ./kernel/cgroup/legacy_freezer.c
    ./kernel/debug/debug_core.h
    ./kernel/debug/kdb/Makefile
    ./kernel/debug/kdb/kdb_bp.c
    ./kernel/debug/kdb/kdb_bt.c
    ./kernel/debug/kdb/kdb_cmds
    ./kernel/debug/kdb/kdb_debugger.c
    ./kernel/debug/kdb/kdb_io.c
    ./kernel/debug/kdb/kdb_keyboard.c
    ./kernel/debug/kdb/kdb_main.c
    ./kernel/debug/kdb/kdb_private.h
    ./kernel/debug/kdb/kdb_support.c
    ./kernel/locking/lockdep_states.h
    ./kernel/locking/mutex-debug.c
    ./kernel/locking/spinlock_debug.c
    ./kernel/sched/pelt.h

With the optional -D parameter the directory depth can be limited:

# scripts/spdxcheck.py -f -D 0 kernel/
Files without SPDX:
    ./kernel/cpu.c
    ./kernel/kmod.c
    ./kernel/relay.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-18 15:32:38 +02:00
Thomas Gleixner 0e7f030687 scripts/spdxcheck: Add [sub]directory statistics
Add functionality to display [sub]directory statistics. This is enabled by
adding '-d' to the command line. The optional -D parameter allows to limit
the directory depth. If supplied the subdirectories are accumulated

# scripts/spdxcheck.py -d kernel/
Incomplete directories: SPDX in Files
    ./kernel                         :   111 of   114   97%
    ./kernel/bpf                     :    43 of    45   95%
    ./kernel/bpf/preload             :     4 of     5   80%
    ./kernel/bpf/preload/iterators   :     4 of     5   80%
    ./kernel/cgroup                  :    10 of    13   76%
    ./kernel/configs                 :     0 of     9    0%
    ./kernel/debug                   :     3 of     4   75%
    ./kernel/debug/kdb               :     1 of    11    9%
    ./kernel/locking                 :    29 of    32   90%
    ./kernel/sched                   :    38 of    39   97%

The result can be accumulated by restricting the depth via the new command
line option '-d $DEPTH':

# scripts/spdxcheck.py -d -D1
Incomplete directories: SPDX in Files
    ./                               :     6 of    13   46%
    ./Documentation                  :  4096 of  8451   48%
    ./arch                           : 13476 of 16402   82%
    ./block                          :   100 of   101   99%
    ./certs                          :    11 of    14   78%
    ./crypto                         :   145 of   176   82%
    ./drivers                        : 24682 of 30745   80%
    ./fs                             :  1876 of  2110   88%
    ./include                        :  5175 of  5757   89%
    ./ipc                            :    12 of    13   92%
    ./kernel                         :   493 of   527   93%
    ./lib                            :   393 of   524   75%
    ./mm                             :   151 of   159   94%
    ./net                            :  1713 of  1900   90%
    ./samples                        :   211 of   273   77%
    ./scripts                        :   341 of   435   78%
    ./security                       :   241 of   250   96%
    ./sound                          :  2438 of  2503   97%
    ./tools                          :  3810 of  5462   69%
    ./usr                            :     9 of    10   90%

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-18 15:31:45 +02:00
Thomas Gleixner a377ce75e4 scripts/spdxcheck: Add directory statistics
For better insights.

Directories accounted:     4646
Directories complete:      2565  55%

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-18 15:31:28 +02:00
Thomas Gleixner 149d623fbe scripts/spdxcheck: Add percentage to statistics
Files checked:            75856
Lines checked:           294516
Files with SPDX:          59410  78%
Files with errors:            0

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-18 15:30:49 +02:00
Uros Bizjak 0aa7be05d8 locking/atomic: Add generic try_cmpxchg64 support
Add generic support for try_cmpxchg64{,_acquire,_release,_relaxed}
and their falbacks involving cmpxchg64.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220515184205.103089-2-ubizjak@gmail.com
2022-05-18 00:08:27 +02:00
Heiko Carstens 8218827b73 scripts/min-tool-version.sh: raise minimum clang version to 14.0.0 for s390
Before version 14.0.0 llvm's integrated assembler fails to handle some
displacement variants:

arch/s390/purgatory/head.S:108:10: error: invalid operand for instruction
 lg %r11,kernel_type-.base_crash(%r13)

Instead of working around this and given that this is already fixed
raise the minimum clang version from 13.0.0 to 14.0.0.

Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://reviews.llvm.org/D113341
Link: https://lore.kernel.org/r/20220511120532.2228616-9-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2022-05-17 15:16:29 +02:00
Kees Cook 710e4ebfba gcc-plugins: randstruct: Remove cast exception handling
With all randstruct exceptions removed, remove all the exception
handling code. Any future warnings are likely to be shared between
this plugin and Clang randstruct, and will need to be addressed in a
more wholistic fashion.

Cc: Christoph Hellwig <hch@infradead.org>
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2022-05-16 16:02:21 -07:00
Kees Cook b146cbf2e3 af_unix: Silence randstruct GCC plugin warning
While preparing for Clang randstruct support (which duplicated many of
the warnings the randstruct GCC plugin warned about), one strange one
remained only for the randstruct GCC plugin. Eliminating this rids
the plugin of the last exception.

It seems the plugin is happy to dereference individual members of
a cross-struct cast, but it is upset about casting to a whole object
pointer. This only manifests in one place in the kernel, so just replace
the variable with individual member accesses. There is no change in
executable instruction output.

Drop the last exception from the randstruct GCC plugin.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Cong Wang <cong.wang@bytedance.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: netdev@vger.kernel.org
Cc: linux-hardening@vger.kernel.org
Acked-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Link: https://lore.kernel.org/lkml/20220511022217.58586-1-kuniyu@amazon.co.jp
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/lkml/20220511151542.4cb3ff17@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2022-05-16 16:02:21 -07:00
Kees Cook 2dcfe9e2d3 niu: Silence randstruct warnings
Clang randstruct gets upset when it sees struct addresspace (which is
randomized) being assigned to a struct page (which is not randomized):

drivers/net/ethernet/sun/niu.c:3385:12: error: casting from randomized structure pointer type 'struct address_space *' to 'struct page *'
                        *link = (struct page *) page->mapping;
                                ^

It looks like niu.c is looking for an in-line place to chain its allocated
pages together and is overloading the "mapping" member, as it is unused.
This is very non-standard, and is expected to be cleaned up in the
future[1], but there is no "correct" way to handle it today.

No meaningful machine code changes result after this change, and source
readability is improved.

Drop the randstruct exception now that there is no "confusing" cross-type
assignment.

[1] https://lore.kernel.org/lkml/YnqgjVoMDu5v9PNG@casper.infradead.org/

Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Du Cheng <ducheng2@gmail.com>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: netdev@vger.kernel.org
Cc: linux-mm@kvack.org
Cc: linux-hardening@vger.kernel.org
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/lkml/20220511151647.7290adbe@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2022-05-16 16:02:21 -07:00
Kees Cook c1298a3a11 big_keys: Use struct for internal payload
The randstruct GCC plugin gets upset when it sees struct path (which is
randomized) being assigned from a "void *" (which it cannot type-check).

There's no need for these casts, as the entire internal payload use is
following a normal struct layout. Convert the enum-based void * offset
dereferencing to the new big_key_payload struct. No meaningful machine
code changes result after this change, and source readability is improved.

Drop the randstruct exception now that there is no "confusing" cross-type
assignment.

Cc: David Howells <dhowells@redhat.com>
Cc: Eric Biggers <ebiggers@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Cc: James Morris <jmorris@namei.org>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: linux-hardening@vger.kernel.org
Cc: keyrings@vger.kernel.org
Cc: linux-security-module@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2022-05-16 16:02:21 -07:00
Josh Poimboeuf 1d1a0e7c51 scripts/faddr2line: Fix overlapping text section failures
There have been some recent reports of faddr2line failures:

  $ scripts/faddr2line sound/soundcore.ko sound_devnode+0x5/0x35
  bad symbol size: base: 0x0000000000000000 end: 0x0000000000000000

  $ ./scripts/faddr2line vmlinux.o enter_from_user_mode+0x24
  bad symbol size: base: 0x0000000000005fe0 end: 0x0000000000005fe0

The problem is that faddr2line is based on 'nm', which has a major
limitation: it doesn't know how to distinguish between different text
sections.  So if an offset exists in multiple text sections in the
object, it may fail.

Rewrite faddr2line to be section-aware, by basing it on readelf.

Fixes: 67326666e2 ("scripts: add script for translating stack dump function offsets")
Reported-by: Kaiwan N Billimoria <kaiwan.billimoria@gmail.com>
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://lore.kernel.org/r/29ff99f86e3da965b6e46c1cc2d72ce6528c17c3.1652382321.git.jpoimboe@kernel.org
2022-05-12 12:07:11 -07:00
Josh Poimboeuf 21e350233b scripts: Create objdump-func helper script
Add a simple script which disassembles a single function from an object
file.  Comes in handy for objtool warnings and kernel stack traces.

Originally-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://lore.kernel.org/r/3eb3f091fd6bd9caba50392ceab98ce756804f3b.1650578171.git.jpoimboe@redhat.com
2022-05-12 10:08:43 -07:00
Masahiro Yamada 2a66c3124a modpost: change the license of EXPORT_SYMBOL to bool type
There were more EXPORT_SYMBOL types in the past. The following commits
removed unused ones.

 - f1c3d73e97 ("module: remove EXPORT_SYMBOL_GPL_FUTURE")
 - 367948220f ("module: remove EXPORT_UNUSED_SYMBOL*")

There are 3 remaining in enum export, but export_unknown does not make
any sense because we never expect such a situation like "we do not know
how it was exported".

If the symbol name starts with "__ksymtab_", but the section name
does not start with "___ksymtab+" or "___ksymtab_gpl+", it is not an
exported symbol.

It occurs when a variable starting with "__ksymtab_" is directly defined:

   int __ksymtab_foo;

Presumably, there is no practical issue for using such a weird variable
name (but there is no good reason for doing so, either).

Anyway, that is not an exported symbol. Setting export_unknown is not
the right thing to do. Do not call sym_add_exported() in this case.

With pointless export_unknown removed, the export type finally becomes
boolean (either EXPORT_SYMBOL or EXPORT_SYMBOL_GPL).

I renamed the field name to is_gpl_only. EXPORT_SYMBOL_GPL sets it true.
Only GPL-compatible modules can use it.

I removed the orphan comment, "How a symbol is exported", which is
unrelated to sec_mismatch_count. It is about enum export.
See commit bd5cbcedf4 ("kbuild: export-type enhancement to modpost.c")

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
2022-05-11 21:46:39 +09:00
Masahiro Yamada ce79c406a2 modpost: remove left-over cross_compile declaration
This is a remnant of commit 6543becf26 ("mod/file2alias: make
modalias generation safe for cross compiling").

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-11 21:46:39 +09:00
Masahiro Yamada 78e9e56af3 kbuild: record symbol versions in *.cmd files
When CONFIG_MODVERSIONS=y, the output from genksyms is saved in
separate *.symversions files, and will be used much later when
CONFIG_LTO_CLANG=y because it is impossible to update LLVM bit code
here.

This approach is not robust because:

 - *.symversions may or may not exist. If *.symversions does not
   exist, we never know if it is missing for legitimate reason
   (i.e. no EXPORT_SYMBOL) or something bad has happened (for
   example, the user accidentally deleted it). Once it occurs,
   it is not self-healing because *.symversions is generated
   as a side effect.

 - stale (i.e. invalid) *.symversions might be picked up if an
   object is generated in a non-ordinary way, and corresponding
   *.symversions (, which was generated by old builds) just happen
   to exist.

A more robust approach is to save symbol versions in *.cmd files
because:

 - *.cmd always exists (if the object is generated by if_changed
   rule or friends). Even if the user accidentally deletes it,
   it will be regenerated in the next build.

 - *.cmd is always re-generated when the object is updated. This
   avoid stale version information being picked up.

I will remove *.symversions later.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Tested-by: Nicolas Schier <nicolas@fjasle.eu>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
2022-05-11 21:46:39 +09:00
Masahiro Yamada e493f47275 kbuild: generate a list of objects in vmlinux
A *.mod file lists the member objects of a module, but vmlinux does
not have such a file.

Generate this list to allow modpost to know all the member objects.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
2022-05-11 21:46:39 +09:00
Masahiro Yamada a44abaca0e modpost: move *.mod.c generation to write_mod_c_files()
A later commit will add more code to this list_for_each_entry loop.

Before that, move the loop body into a separate helper function.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
2022-05-11 21:46:38 +09:00
Masahiro Yamada 7fedac9698 modpost: merge add_{intree_flag,retpoline,staging_flag} to add_header
add_intree_flag(), add_retpoline(), and add_staging_flag() are small
enough to be merged into add_header().

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Tested-by: Nathan Chancellor <nathan@kernel.org>
2022-05-11 21:46:38 +09:00
Reza Arbab 5d53508d1b scripts/prune-kernel: Use kernel-install if available
If the new-kernel-pkg utility isn't present, try using kernel-install.
This is what the %preun scriptlet in scripts/package/mkspec does too.

Signed-off-by: Reza Arbab <arbab@linux.ibm.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-05-11 21:46:38 +09:00
Masahiro Yamada f774f5bb87 kbuild: factor out the common installation code into scripts/install.sh
Many architectures have similar install.sh scripts.

The first half is really generic; it verifies that the kernel image
and System.map exist, then executes ~/bin/${INSTALLKERNEL} or
/sbin/${INSTALLKERNEL} if available.

The second half is kind of arch-specific; it copies the kernel image
and System.map to the destination, but the code is slightly different.

Factor out the generic part into scripts/install.sh.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
2022-05-11 21:45:53 +09:00
Kees Cook 61f60bac8c gcc-plugins: Change all version strings match kernel
It's not meaningful for the GCC plugins to track their versions separately
from the rest of the kernel. Switch all versions to the kernel version.

Fix mismatched indenting while we're at it.

Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2022-05-10 16:54:33 -07:00
Kees Cook 035f7f87b7 randstruct: Enable Clang support
Clang 15 will support randstruct via the -frandomize-layout-seed-file=...
option. Update the Kconfig and Makefile to recognize this feature.

Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: linux-kbuild@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220503205503.3054173-7-keescook@chromium.org
2022-05-08 01:33:07 -07:00
Kees Cook be2b34fa9b randstruct: Move seed generation into scripts/basic/
To enable Clang randstruct support, move the structure layout
randomization seed generation out of scripts/gcc-plugins/ into
scripts/basic/ so it happens early enough that it can be used by either
compiler implementation. The gcc-plugin still builds its own header file,
but now does so from the common "randstruct.seed" file.

Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220503205503.3054173-6-keescook@chromium.org
2022-05-08 01:33:07 -07:00
Kees Cook 613f4b3ed7 randstruct: Split randstruct Makefile and CFLAGS
To enable the new Clang randstruct implementation[1], move
randstruct into its own Makefile and split the CFLAGS from
GCC_PLUGINS_CFLAGS into RANDSTRUCT_CFLAGS.

[1] https://reviews.llvm.org/D121556

Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220503205503.3054173-5-keescook@chromium.org
2022-05-08 01:33:06 -07:00
Kees Cook 595b893e20 randstruct: Reorganize Kconfigs and attribute macros
In preparation for Clang supporting randstruct, reorganize the Kconfigs,
move the attribute macros, and generalize the feature to be named
CONFIG_RANDSTRUCT for on/off, CONFIG_RANDSTRUCT_FULL for the full
randomization mode, and CONFIG_RANDSTRUCT_PERFORMANCE for the cache-line
sized mode.

Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220503205503.3054173-4-keescook@chromium.org
2022-05-08 01:33:06 -07:00
Kees Cook d364658970 sancov: Split plugin build from plugin CFLAGS
When the sancov_plugin is enabled, it gets added to gcc-plugin-y which
is used to populate both GCC_PLUGIN (for building the plugin) and
GCC_PLUGINS_CFLAGS (for enabling and options). Instead of adding sancov
to both and then removing it from GCC_PLUGINS_CFLAGS, create a separate
list, gcc-plugin-external-y, which is only added to GCC_PLUGIN.

This will also be used by the coming randstruct build changes.

Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: linux-kbuild@vger.kernel.org
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220503205503.3054173-3-keescook@chromium.org
2022-05-08 01:33:06 -07:00
Masahiro Yamada f18379a302 modpost: split new_symbol() to symbol allocation and hash table addition
new_symbol() does two things; allocate a new symbol and register it
to the hash table.

Using a separate function for each is easier to understand.

Replace new_symbol() with hash_add_symbol(). Remove the second parameter
of alloc_symbol().

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:01 +09:00
Masahiro Yamada e76cc48d8e modpost: make sym_add_exported() always allocate a new symbol
Currently, sym_add_exported() does not allocate a symbol if the same
name symbol already exists in the hash table.

This does not reflect the real use cases. You can let an external
module override the in-tree one. In this case, the external module
will export the same name symbols as the in-tree one. However,
modpost simply ignores those symbols, then Module.symvers for the
external module loses its symbols.

sym_add_exported() should allocate a new symbol.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:01 +09:00
Masahiro Yamada b842271108 modpost: make multiple export error
This is currently a warning, but I think modpost should stop building
in this case.

If the same symbol is exported multiple times and we let it keep going,
the sanity check becomes difficult.

Only the legitimate case is that an external module overrides the
corresponding in-tree module to provide a different implementation
with the same interface.

Also, there exists an upstream example that exploits this feature.

  $ make M=tools/testing/nvdimm

... builds tools/testing/nvdimm/libnvdimm.ko. This is a mocked module
that overrides the symbols from drivers/nvdimm/libnvdimm.ko.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:01 +09:00
Masahiro Yamada f841536e8c modpost: dump Module.symvers in the same order of modules.order
modpost dumps the exported symbols into Module.symvers, but currently
in random order because it iterates in the hash table.

Add a linked list of exported symbols in struct module, so we can
iterate on symbols per module.

This commit makes Module.symvers much more readable; the outer loop in
write_dump() iterates over the modules in the order of modules.order,
and the inner loop dumps symbols in each module.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:01 +09:00
Masahiro Yamada ab489d6002 modpost: traverse the namespace_list in order
Use the doubly linked list to traverse the list in the added order.
This makes the code more consistent.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:00 +09:00
Masahiro Yamada 4484054816 modpost: use doubly linked list for dump_lists
This looks easier to understand (just because this is a pattern in
the kernel code). No functional change is intended.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:00 +09:00
Masahiro Yamada 8a69152be9 modpost: traverse unresolved symbols in order
Currently, modpost manages unresolved in a singly linked list; it adds
a new node to the head, and traverses the list from new to old.

Use a doubly linked list to keep the order in the symbol table in the
ELF file.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:00 +09:00
Masahiro Yamada e882e89bcf modpost: add sym_add_unresolved() helper
Add a small helper, sym_add_unresolved() to ease the further
refactoring.

Remove the 'weak' argument from alloc_symbol() because it is sensible
only for unresolved symbols.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:00 +09:00
Masahiro Yamada 325eba05e8 modpost: traverse modules in order
Currently, modpost manages modules in a singly linked list; it adds
a new node to the head, and traverses the list from new to old.

It works, but the error messages are shown in the reverse order.

If you have a Makefile like this:

  obj-m += foo.o bar.o

then, modpost shows error messages in bar.o, foo.o, in this order.

Use a doubly linked list to keep the order in modules.order; use
list_add_tail() for the node addition and list_for_each_entry() for
the list traverse.

Now that the kernel's list macros have been imported to modpost, I will
use them actively going forward.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:00 +09:00
Masahiro Yamada 97aa4aef53 modpost: import include/linux/list.h
Import include/linux/list.h to use convenient list macros in modpost.

I dropped kernel-space code such as {WRITE,READ}_ONCE etc. and unneeded
macros.

I also imported container_of() from include/linux/container_of.h and
type definitions from include/linux/types.h.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:00 +09:00
Masahiro Yamada 5066743e4c modpost: change mod->gpl_compatible to bool type
Currently, mod->gpl_compatible is tristate; it is set to -1 by default,
then to 1 or 0 when MODULE_LICENSE() is found.

Maybe, -1 was chosen to represent the 'unknown' license, but it is not
useful.

The current code:

    if (!mod->gpl_compatible)
            check_for_gpl_usage(exp->export, basename, exp->name);

... only cares whether gpl_compatible is zero or not.

Change it to a bool type with the initial value 'true', which has no
functional change.

The default value should be 'true' instead of 'false'.

Since commit 1d6cd39293 ("modpost: turn missing MODULE_LICENSE() into
error"), unknown module license is an error.

The error message, "missing MODULE_LICENSE()" is enough to explain the
issue. It is not sensible to show another message, "GPL-incompatible
module ... uses GPL-only symbol".

Add comments to explain this.

While I was here, I renamed gpl_compatible to is_gpl_compatible for
clarification, and also slightly refactored the code.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:00 +09:00
Masahiro Yamada 58e01fcae1 modpost: use bool type where appropriate
Use 'bool' to clarify that the valid value is true or false.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:00 +09:00
Masahiro Yamada 8d613a1d04 kbuild: drop $(objtree)/ prefix support for clean-files
I think this hack is a bad idea. arch/powerpc/boot/Makefile is the
only and last user. Let's stop doing this.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
2022-05-08 03:17:00 +09:00
Masahiro Yamada 70ddb48db4 modpost: move struct namespace_list to modpost.c
There is no good reason to define struct namespace_list in modpost.h

struct module has pointers to struct namespace_list, but that does
not require the definition of struct namespace_list.

Move it to modpost.c.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:17:00 +09:00
Masahiro Yamada 4cae77ac58 modpost: retrieve the module dependency and CRCs in check_exports()
Do not repeat the similar code.

It is simpler to do this in check_exports() instead of add_versions().

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:59 +09:00
Masahiro Yamada 23beb44a0e modpost: add a separate error for exported symbols without definition
It took me a while to understand the intent of "exp->module == mod".

This code goes back to 2003. [1]

The commit is not in this git repository, and might be worth a little
explanation.

You can add EXPORT_SYMBOL() without having its definition in the same
file (but you need to put a declaration).

This is typical when EXPORT_SYMBOL() is added in a C file, but the
actual implementation is in a separate assembly file.

One example is arch/arm/kernel/armksyms.c

In the old days, EXPORT_SYMBOL() was only available in C files (but
this limitation does not exist any more). If you forget to add the
definition, this error occurs.

Add a separate, clearer message for this case. It should be an error
even if KBUILD_MODPOST_WARN is given.

[1]: https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/commit/?id=2763b6bcb96e6a38a2fe31108fe5759ec5bcc80a

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:59 +09:00
Masahiro Yamada 594ade3eef modpost: remove stale comment about sym_add_exported()
The description,

  it may have already been added without a
  CRC, in this case just update the CRC

... is no longer valid.

In the old days, this function was used to update the CRC as well.

Commit 040fcc819a ("kbuild: improved modversioning support for
external modules") started to use a separate function (sym_update_crc)
for updating the CRC.

The first part, "Add an exported symbol" is correct, but it is too
obvious from the function name. Drop this comment entirely.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:59 +09:00
Masahiro Yamada c155a47d83 modpost: do not write out any file when error occurred
If an error occurs, modpost will fail anyway. Do not write out
any content (, which might be invalid).

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:59 +09:00
Masahiro Yamada 15a28c7c72 modpost: use snprintf() instead of sprintf() for safety
Use snprintf() to avoid the potential buffer overflow, and also
check the return value to detect the too long path.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:59 +09:00
Vincent Mailhol f4d40868fc checksyscalls: ignore -Wunused-macros
The macros defined in this file are for testing only and are purposely
not used. When compiled with W=2, both gcc and clang yield some
-Wunused-macros warnings. Ignore them.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-05-08 03:16:59 +09:00
Jiri Slaby a90bb65ae2 scripts: dummy-tools, add pahole
CONFIG_PAHOLE_VERSION is a part of a config since the commit below. And
when multiple people update the config, this value constantly changes.
Even if they use dummy scripts.

To fix this, add a pahole dummy script returning v99.99. (This is
translated into 9999 later in the process.)

Thereafter, this script can be invoked easily for example as:
make PAHOLE=scripts/dummy-tools/pahole oldconfig

Fixes: 613fe16923 (kbuild: Add CONFIG_PAHOLE_VERSION)
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-05-08 03:16:59 +09:00
Yann Droneaud c77d06e70d kbuild: support W=e to make build abort in case of warning
When developing new code/feature, CONFIG_WERROR is most
often turned off, especially for people using make W=12 to
get more warnings.

In such case, turning on -Werror temporarily would require
switching on CONFIG_WERROR in the configuration, building,
then switching off CONFIG_WERROR.

For this use case, this patch introduces a new 'e' modifier
to W= as a short hand for KCFLAGS+=-Werror" so that -Werror
got added to the kernel (built-in) and modules' CFLAGS.

Signed-off-by: Yann Droneaud <ydroneaud@opteya.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-05-08 03:16:59 +09:00
Masahiro Yamada feb7d79fea kbuild: read *.mod to get objects passed to $(LD) or $(AR)
ld and ar support @file, which command-line options are read from.

Now that *.mod lists the member objects in the correct order, without
duplication, it is ready to be passed to ld and ar.

By using the @file syntax, people will not be worried about the pitfall
described in the NOTE.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:59 +09:00
Masahiro Yamada fc93a4cdce kbuild: make *.mod not depend on *.o
The dependency

    $(obj)/%.mod: $(obj)/%$(mod-prelink-ext).o

... exists because *.mod files previously contained undefined symbols,
which are computed from *.o files when CONFIG_TRIM_UNUSED_KSYMS=y.

Now that the undefined symbols are put into separate *.usyms files,
there is no reason to make *.mod depend on *.o files.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-05-08 03:16:59 +09:00
Masahiro Yamada 22f26f2177 kbuild: get rid of duplication in *.mod files
It is allowed to add the same objects multiple times to obj-y / obj-m:

  obj-y += foo.o foo.o foo.o
  obj-m += bar.o bar.o bar.o

It is also allowed to add the same objects multiple times to a composite
module:

  obj-m += foo.o
  foo-y := foo1.o foo2.o foo2.o foo1.o

This flexibility is useful because the same object might be selected by
different CONFIG options, like this:

  obj-m               += foo.o
  foo-y               := foo1.o
  foo-$(CONFIG_FOO_X) += foo2.o
  foo-$(CONFIG_FOO_Y) += foo2.o

The duplicated objects are omitted at link time. It works naturally in
Makefiles because GNU Make removes duplication in $^ without changing
the order.

It is working well, almost...

A small flaw I notice is, *.mod contains duplication in such a case.

This is probably not a big deal. As far as I know, the only small
problem is scripts/mod/sumversion.c parses the same file multiple
times.

I am fixing this because I plan to reuse *.mod for other purposes,
where the duplication can be problematic.

The code change is quite simple. We already use awk to drop duplicated
lines in modules.order (see cmd_modules_order in the same file).
I copied the code, but changed RS to use spaces as record separators.

I also changed the file format to list one object per line.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-05-08 03:16:59 +09:00
Masahiro Yamada 9413e76405 kbuild: split the second line of *.mod into *.usyms
The *.mod files have two lines; the first line lists the member objects
of the module, and the second line, if CONFIG_TRIM_UNUSED_KSYMS=y, lists
the undefined symbols.

Currently, we generate *.mod after constructing composite modules,
otherwise, we cannot compute the second line. No prerequisite is
required to print the first line.

They are orthogonal. Splitting them into separate commands will ease
further cleanups.

This commit splits the list of undefined symbols out to *.usyms files.

Previously, the list of undefined symbols ended up with a very long
line, but now it has one symbol per line.

Use sed like we did before commit 7d32358be8 ("kbuild: avoid split
lines in .mod files").

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
2022-05-08 03:16:59 +09:00
Masahiro Yamada b3591e0619 kbuild: reuse real-search to simplify cmd_mod
The first command in cmd_mod is similar to the real-search macro.
Reuse it.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:59 +09:00
Masahiro Yamada f97cf39991 kbuild: make multi_depend work with targets in subdirectory
Precisely speaking, when you get the stem of the path, you should use
$(patsubst $(obj)/%,%,...) instead of $(notdir ...).

I do not see this usecase, but if you create a composite object in a
subdirectory, the Makefile should look like this:

   obj-$(CONFIG_FOO) += dir/foo.o
   dir/foo-objs      := dir/foo1.o dir/foo2.o

The member objects should be assigned to dir/foo-objs instead of
foo-objs.

This syntax is more consistent with commit 54b8ae66ae ("kbuild:
change *FLAGS_<basetarget>.o to take the path relative to $(obj)").

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:59 +09:00
Masahiro Yamada 9eef99f7a3 kbuild: reuse suffix-search to refactor multi_depend
The complicated part of multi_depend is the same as suffix-search.

Reuse it.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:58 +09:00
Masahiro Yamada 7cfa2fcbac kbuild: refactor cmd_modversions_S
Split the code into two macros, cmd_gen_symversions_S for running
genksyms, and cmd_modversions for running $(LD) to update the object
with CRCs.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:58 +09:00
Masahiro Yamada 8017ce5064 kbuild: refactor cmd_modversions_c
cmd_modversions_c implements two parts; run genksyms to calculate CRCs
of exported symbols, run $(LD) to update the object with the CRCs. The
latter is not executed for CONFIG_LTO_CLANG=y since the object is not
ELF but LLVM bit code at this point.

The first part can be unified because we can always use $(NM) instead
of "$(OBJDUMP) -h" to dump the symbols.

Split the code into the two macros, cmd_gen_symversions_c and
cmd_modversions.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:58 +09:00
Masahiro Yamada 79f646e865 modpost: remove annoying namespace_from_kstrtabns()
There are two call sites for sym_update_namespace().

When the symbol has no namespace, s->namespace is set to NULL,
but the conversion from "" to NULL is done in two different places.

[1] read_symbols()

  This gets the namespace from __kstrtabns_<symbol>. If the symbol has
  no namespace, sym_get_data(info, sym) returns the empty string "".
  namespace_from_kstrtabns() converts it to NULL before it is passed to
  sym_update_namespace().

[2] read_dump()

  This gets the namespace from the dump file, *.symvers. If the symbol
  has no namespace, the 'namespace' is the empty string "", which is
  directly passed into sym_update_namespace(). The conversion from
  "" to NULL is done in sym_update_namespace().

namespace_from_kstrtabns() exists only for creating this inconsistency.

Remove namespace_from_kstrtabns() so that sym_update_namespace() is
consistently passed with "" instead of NULL.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:58 +09:00
Masahiro Yamada b5f1a52a59 modpost: remove redundant initializes for static variables
These are initialized with zeros without explicit initializers.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:58 +09:00
Masahiro Yamada 535b3e05f4 modpost: move export_from_secname() call to more relevant place
The assigned 'export' is only used when

    if (strstarts(symname, "__ksymtab_"))

is met. The else-part of the assignment is the dead code.

Move the export_from_secname() call to where it is used.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:58 +09:00
Masahiro Yamada 7ce3e410e0 modpost: remove useless export_from_sec()
With commit 1743694eb2 ("modpost: stop symbol preloading for
modversion CRC") applied, now export_from_sec() is useless.

handle_symbol() is called for every symbol in the ELF.

When 'symname' does not start with "__ksymtab", export_from_sec() is
called, and the returned value is stored in 'export'.

It is used in the last part of handle_symbol():

    if (strstarts(symname, "__ksymtab_")) {
            name = symname + strlen("__ksymtab_");
            sym_add_exported(name, mod, export);
    }

'export' is used only when 'symname' starts with "__ksymtab_".

So, the value returned by export_from_sec() is never used.

Remove useless export_from_sec(). This makes further cleanups possible.

I put the temporary code:

    export = export_unknown;

Otherwise, I would get the compiler warning:

    warning: 'export' may be used uninitialized in this function [-Wmaybe-uninitialized]

This is apparently false positive because

    if (strstarts(symname, "__ksymtab_")

... is a stronger condition than:

    if (strstarts(symname, "__ksymtab")

Anyway, this part will be cleaned up by the next commit.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
2022-05-08 03:16:30 +09:00
Marc Zyngier 904cabf471 Merge branch kvm-arm64/hyp-stack-guard into kvmarm-master/next
* kvm-arm64/hyp-stack-guard:
  : .
  : Harden the EL2 stack by providing stack guards, courtesy of
  : Kalesh Singh.
  : .
  KVM: arm64: Symbolize the nVHE HYP addresses
  KVM: arm64: Detect and handle hypervisor stack overflows
  KVM: arm64: Add guard pages for pKVM (protected nVHE) hypervisor stack
  KVM: arm64: Add guard pages for KVM nVHE hypervisor stack
  KVM: arm64: Introduce pkvm_alloc_private_va_range()
  KVM: arm64: Introduce hyp_alloc_private_va_range()

Signed-off-by: Marc Zyngier <maz@kernel.org>
2022-05-04 09:42:37 +01:00
Christian Göttsche ded34574d4 selinux: declare data arrays const
The arrays for the policy capability names, the initial sid identifiers
and the class and permission names are not changed at runtime.  Declare
them const to avoid accidental modification.

Do not override the classmap and the initial sid list in the build time
script genheaders.

Check flose(3) is successful in genheaders.c, otherwise the written data
might be corrupted or incomplete.

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
[PM: manual merge due to fuzz, minor style tweaks]
Signed-off-by: Paul Moore <paul@paul-moore.com>
2022-05-03 15:53:49 -04:00
Greg Kroah-Hartman 0e509f537f Merge 5.18-rc5 into driver-core-next
We need the kernfs/driver core fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-02 13:56:48 +02:00
Greg Kroah-Hartman 35a7609639 Linux 5.18-rc5
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Merge 5.18-rc5 into char-misc-next

We need the char-misc fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-02 13:49:24 +02:00
Rob Herring 11fb48961e get_maintainer: Honor mailmap for in file emails
Add support to also use the mailmap for 'in file' email addresses.

Link: https://lkml.kernel.org/r/20220323193645.317514-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Reported-by: Marc Zyngier <maz@kernel.org>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-04-29 14:38:00 -07:00
Paul Gortmaker dec81a5320 scripts/bloat-o-meter: filter out vermagic as it is not relevant
Seeing it as a false positive increase at the top is just noise:

   linux-head$./scripts/bloat-o-meter ../pre/vmlinux ../post/vmlinux
   add/remove: 0/571 grow/shrink: 1/9 up/down: 20/-64662 (-64642)
   Function                                     old     new   delta
   vermagic                                      49      69     +20

Since it really doesn't "grow", it makes sense to filter it out.

Link: https://lkml.kernel.org/r/20220428035824.7934-1-paul.gortmaker@windriver.com
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-04-29 14:37:57 -07:00
Schspa Shi 3af8acf6af scripts/decode_stacktrace.sh: support old bash version
Old bash version don't support associative array variables.  Avoid to use
associative array variables to avoid error.

Without this, old bash version will report error as fellowing
[   15.954042] Kernel panic - not syncing: sysrq triggered crash
[   15.955252] CPU: 1 PID: 167 Comm: sh Not tainted 5.18.0-rc1-00208-gb7d075db2fd5 #4
[   15.956472] Hardware name: Hobot J5 Virtual development board (DT)
[   15.957856] Call trace:
./scripts/decode_stacktrace.sh: line 128: ,dump_backtrace: syntax error: operand expected (error token is ",dump_backtrace")

Link: https://lkml.kernel.org/r/20220409180331.24047-1-schspa@gmail.com
Signed-off-by: Schspa Shi <schspa@gmail.com>
Cc: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-04-29 14:37:57 -07:00
Kalesh Singh 6ccf9cb557 KVM: arm64: Symbolize the nVHE HYP addresses
Reintroduce the __kvm_nvhe_ symbols in kallsyms, ignoring the local
symbols in this namespace. The local symbols are not informative and
can cause aliasing issues when symbolizing the addresses.

With the necessary symbols now in kallsyms we can symbolize nVHE
addresses using the %p print format specifier:

[   98.916444][  T426] kvm [426]: nVHE hyp panic at: [<ffffffc0096156fc>] __kvm_nvhe_overflow_stack+0x8/0x34!

Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220420214317.3303360-7-kaleshsingh@google.com
2022-04-28 20:53:13 +01:00
Manivannan Sadhasivam c268c0a8a3 bus: mhi: ep: Add uevent support for module autoloading
Add uevent support to MHI endpoint bus so that the client drivers can be
autoloaded by udev when the MHI endpoint devices gets created. The client
drivers are expected to provide MODULE_DEVICE_TABLE with the MHI id_table
struct so that the alias can be exported.

The MHI endpoint reused the mhi_device_id structure of the MHI bus.

Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20220405135754.6622-19-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-26 13:17:42 +02:00
Gustavo A. R. Silva 73f1d07e5f checkpatch: add new alloc functions to alloc with multiplies check
kvmalloc() and kvzalloc() functions have now 2-factor multiplication
argument forms kvmalloc_array() and kvcalloc(), correspondingly.

Add alloc-with-multiplies checks for these new functions.

Link: https://github.com/KSPP/linux/issues/187
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2022-04-26 01:30:33 -05:00
SeongJae Park 5b5bfecaa3 scripts/get_abi: Fix wrong script file name in the help message
The help message of 'get_abi.pl' is mistakenly saying it's
'abi_book.pl'.  This commit fixes the wrong name in the help message.

Fixes: bbc249f2b8 ("scripts: add an script to parse the ABI files")
Signed-off-by: SeongJae Park <sj@kernel.org>
Link: https://lore.kernel.org/r/20220419121636.290407-1-sj@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-24 10:38:44 +02:00
Josh Poimboeuf 753da4179d objtool: Remove --lto and --vmlinux in favor of --link
The '--lto' option is a confusing way of telling objtool to do stack
validation despite it being a linked object.  It's no longer needed now
that an explicit '--stackval' option exists.  The '--vmlinux' option is
also redundant.

Remove both options in favor of a straightforward '--link' option which
identifies a linked object.

Also, implicitly set '--link' with a warning if the user forgets to do
so and we can tell that it's a linked object.  This makes it easier for
manual vmlinux runs.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/dcd3ceffd15a54822c6183e5766d21ad06082b45.1650300597.git.jpoimboe@redhat.com
2022-04-22 12:32:05 +02:00
Josh Poimboeuf 0f620cefd7 objtool: Rename "VMLINUX_VALIDATION" -> "NOINSTR_VALIDATION"
CONFIG_VMLINUX_VALIDATION is just the validation of the "noinstr" rules.
That name is a misnomer, because now objtool actually does vmlinux
validation for other reasons.

Rename CONFIG_VMLINUX_VALIDATION to CONFIG_NOINSTR_VALIDATION.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/173f07e2d6d1afc0874aed975a61783207c6a531.1650300597.git.jpoimboe@redhat.com
2022-04-22 12:32:04 +02:00
Josh Poimboeuf 22102f4559 objtool: Make noinstr hacks optional
Objtool has some hacks in place to workaround toolchain limitations
which otherwise would break no-instrumentation rules.  Make the hacks
explicit (and optional for other arches) by turning it into a cmdline
option and kernel config option.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/b326eeb9c33231b9dfbb925f194ed7ee40edcd7c.1650300597.git.jpoimboe@redhat.com
2022-04-22 12:32:04 +02:00
Josh Poimboeuf 4ab7674f59 objtool: Make jump label hack optional
Objtool secretly does a jump label hack to overcome the limitations of
the toolchain.  Make the hack explicit (and optional for other arches)
by turning it into a cmdline option and kernel config option.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/3bdcbfdd27ecb01ddec13c04bdf756a583b13d24.1650300597.git.jpoimboe@redhat.com
2022-04-22 12:32:04 +02:00
Josh Poimboeuf 26e176896a objtool: Make static call annotation optional
As part of making objtool more modular, put the existing static call
code behind a new '--static-call' option.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/d59ac57ef3d6d8380cdce20322314c9e2e556750.1650300597.git.jpoimboe@redhat.com
2022-04-22 12:32:03 +02:00
Josh Poimboeuf 7206447496 objtool: Make stack validation frame-pointer-specific
Now that CONFIG_STACK_VALIDATION is frame-pointer specific, do the same
for the '--stackval' option.  Now the '--no-fp' option is redundant and
can be removed.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/f563fa064b3b63d528de250c72012d49e14742a3.1650300597.git.jpoimboe@redhat.com
2022-04-22 12:32:03 +02:00
Josh Poimboeuf 03f16cd020 objtool: Add CONFIG_OBJTOOL
Now that stack validation is an optional feature of objtool, add
CONFIG_OBJTOOL and replace most usages of CONFIG_STACK_VALIDATION with
it.

CONFIG_STACK_VALIDATION can now be considered to be frame-pointer
specific.  CONFIG_UNWINDER_ORC is already inherently valid for live
patching, so no need to "validate" it.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/939bf3d85604b2a126412bf11af6e3bd3b872bcb.1650300597.git.jpoimboe@redhat.com
2022-04-22 12:32:03 +02:00
Josh Poimboeuf 7dce62041a objtool: Make stack validation optional
Make stack validation an explicit cmdline option so that individual
objtool features can be enabled individually by other arches.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/52da143699574d756e65ca4c9d4acaffe9b0fe5f.1650300597.git.jpoimboe@redhat.com
2022-04-22 12:32:02 +02:00
Josh Poimboeuf b51277eb97 objtool: Ditch subcommands
Objtool has a fairly singular focus.  It runs on object files and does
validations and transformations which can be combined in various ways.
The subcommand model has never been a good fit, making it awkward to
combine and remove options.

Remove the "check" and "orc" subcommands in favor of a more traditional
cmdline option model.  This makes it much more flexible to use, and
easier to port individual features to other arches.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/5c61ebf805e90aefc5fa62bc63468ffae53b9df6.1650300597.git.jpoimboe@redhat.com
2022-04-22 12:32:01 +02:00
Josh Poimboeuf 2daf7faba7 objtool: Reorganize cmdline options
Split the existing options into two groups: actions, which actually do
something; and options, which modify the actions in some way.

Also there's no need to have short flags for all the non-action options.
Reserve short flags for the more important actions.

While at it:

- change a few of the short flags to be more intuitive

- make option descriptions more consistently descriptive

- sort options in the source like they are when printed

- move options to a global struct

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Link: https://lkml.kernel.org/r/9dcaa752f83aca24b1b21f0b0eeb28a0c181c0b0.1650300597.git.jpoimboe@redhat.com
2022-04-22 12:32:01 +02:00
Josh Poimboeuf 4a5de9b76f objtool: Enable unreachable warnings for CLANG LTO
With IBT support in, objtool is now fully capable of following vmlinux
code flow in LTO mode.  Start reporting unreachable warnings for Clang
LTO as well.

Fixes: ed53a0d971 ("x86/alternative: Use .ibt_endbr_seal to seal indirect calls")
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/7b12df54bceeb0761fe9fc8269ea0c00501214a9.1650300597.git.jpoimboe@redhat.com
2022-04-19 21:58:48 +02:00
Bill Wendling 75c1182e18 security: don't treat structure as an array of struct hlist_head
The initialization of "security_hook_heads" is done by casting it to
another structure pointer type, and treating it as an array of "struct
hlist_head" objects. This requires an exception be made in "randstruct",
because otherwise it will emit an error, reducing the effectiveness of
the hardening technique.

Instead of using a cast, initialize the individual struct hlist_head
elements in security_hook_heads explicitly. This removes the need for
the cast and randstruct exception.

Signed-off-by: Bill Wendling <morbo@google.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220407175930.471870-1-morbo@google.com
2022-04-13 12:15:53 -07:00
Linus Torvalds a19944809f hardening fixes for v5.18-rc3
- latent_entropy: Use /dev/urandom instead of small GCC seed (Jason Donenfeld)
 
 - uapi/stddef.h: add missed include guards (Tadeusz Struk)
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Merge tag 'hardening-v5.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening fixes from Kees Cook:

 - latent_entropy: Use /dev/urandom instead of small GCC seed (Jason
   Donenfeld)

 - uapi/stddef.h: add missed include guards (Tadeusz Struk)

* tag 'hardening-v5.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  gcc-plugins: latent_entropy: use /dev/urandom
  uapi/linux/stddef.h: Add include guards
2022-04-12 14:29:40 -10:00