'export suffix-y' does not work reliably because hyphens are disallowed
in shell variables.
A similar issue was fixed by commit 2bfbe7881e ("kbuild: Do not use
hyphen in exported variable name").
If I do similar in dash, ARCH=sh fails to build.
$ mv linux linux~
$ cd linux~
$ dash
$ make O=foo/bar ARCH=sh CROSS_COMPILE=sh4-linux-gnu- defconfig all
make[1]: Entering directory '/home/masahiro/linux~/foo/bar'
[ snip ]
make[4]: *** No rule to make target 'arch/sh/boot/compressed/vmlinux.bin.', needed by 'arch/sh/boot/compressed/piggy.o'. Stop.
make[3]: *** [/home/masahiro/linux~/arch/sh/boot/Makefile:40: arch/sh/boot/compressed/vmlinux] Error 2
make[2]: *** [/home/masahiro/linux~/arch/sh/Makefile:194: zImage] Error 2
make[1]: *** [/home/masahiro/linux~/Makefile:350: __build_one_by_one] Error 2
make[1]: Leaving directory '/home/masahiro/linux~/foo/bar'
make: *** [Makefile:219: __sub-make] Error 2
The maintainer of GNU Make stated that there is no consistent way to
export variables that do not meet the shell's naming criteria.
(https://savannah.gnu.org/bugs/?55719)
Consequently, you cannot use hyphens in exported variables.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
`BAZ` takes `FOO`'s value as default (as far as `BAR` allows it).
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Use built-in functions instead of shell commands to avoid forking
processes.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
The previous commit fixed up all shell scripts to not include
include/config/auto.conf.
Now that include/config/auto.conf is only included by Makefiles,
we can change it into a more Make-friendly form.
Previously, Kconfig output string values enclosed with double-quotes
(both in the .config and include/config/auto.conf):
CONFIG_X="foo bar"
Unlike shell, Make handles double-quotes (and single-quotes as well)
verbatim. We must rip them off when used.
There are some patterns:
[1] $(patsubst "%",%,$(CONFIG_X))
[2] $(CONFIG_X:"%"=%)
[3] $(subst ",,$(CONFIG_X))
[4] $(shell echo $(CONFIG_X))
These are not only ugly, but also fragile.
[1] and [2] do not work if the value contains spaces, like
CONFIG_X=" foo bar "
[3] does not work correctly if the value contains double-quotes like
CONFIG_X="foo\"bar"
[4] seems to work better, but has a cost of forking a process.
Anyway, quoted strings were always PITA for our Makefiles.
This commit changes Kconfig to stop quoting in include/config/auto.conf.
These are the string type symbols referenced in Makefiles or scripts:
ACPI_CUSTOM_DSDT_FILE
ARC_BUILTIN_DTB_NAME
ARC_TUNE_MCPU
BUILTIN_DTB_SOURCE
CC_IMPLICIT_FALLTHROUGH
CC_VERSION_TEXT
CFG80211_EXTRA_REGDB_KEYDIR
EXTRA_FIRMWARE
EXTRA_FIRMWARE_DIR
EXTRA_TARGETS
H8300_BUILTIN_DTB
INITRAMFS_SOURCE
LOCALVERSION
MODULE_SIG_HASH
MODULE_SIG_KEY
NDS32_BUILTIN_DTB
NIOS2_DTB_SOURCE
OPENRISC_BUILTIN_DTB
SOC_CANAAN_K210_DTB_SOURCE
SYSTEM_BLACKLIST_HASH_LIST
SYSTEM_REVOCATION_KEYS
SYSTEM_TRUSTED_KEYS
TARGET_CPU
UNUSED_KSYMS_WHITELIST
XILINX_MICROBLAZE0_FAMILY
XILINX_MICROBLAZE0_HW_VER
XTENSA_VARIANT_NAME
I checked them one by one, and fixed up the code where necessary.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Richard Weinberger pointed out the risk of sourcing the kernel config
from shell scripts [1], and proposed some patches [2], [3]. It is a good
point, but it took a long time because I was wondering how to fix this.
This commit goes with simple grep approach because there are only a few
scripts including the kernel configuration.
scripts/link_vmlinux.sh has references to a bunch of CONFIG options,
all of which are boolean. I added is_enabled() helper as
scripts/package/{mkdebian,builddeb} do.
scripts/gen_autoksyms.sh uses 'eval', stating "to expand the whitelist
path". I removed it since it is the issue we are trying to fix.
I was a bit worried about the cost of invoking the grep command over
again. I extracted the grep parts from it, and measured the cost. It
was approximately 0.03 sec, which I hope is acceptable.
[test code]
$ cat test-grep.sh
#!/bin/sh
is_enabled() {
grep -q "^$1=y" include/config/auto.conf
}
is_enabled CONFIG_LTO_CLANG
is_enabled CONFIG_LTO_CLANG
is_enabled CONFIG_STACK_VALIDATION
is_enabled CONFIG_UNWINDER_ORC
is_enabled CONFIG_FTRACE_MCOUNT_USE_OBJTOOL
is_enabled CONFIG_VMLINUX_VALIDATION
is_enabled CONFIG_FRAME_POINTER
is_enabled CONFIG_GCOV_KERNEL
is_enabled CONFIG_LTO_CLANG
is_enabled CONFIG_RETPOLINE
is_enabled CONFIG_X86_SMAP
is_enabled CONFIG_LTO_CLANG
is_enabled CONFIG_VMLINUX_MAP
is_enabled CONFIG_KALLSYMS_ALL
is_enabled CONFIG_KALLSYMS_ABSOLUTE_PERCPU
is_enabled CONFIG_KALLSYMS_BASE_RELATIVE
is_enabled CONFIG_DEBUG_INFO_BTF
is_enabled CONFIG_KALLSYMS
is_enabled CONFIG_DEBUG_INFO_BTF
is_enabled CONFIG_BPF
is_enabled CONFIG_BUILDTIME_TABLE_SORT
is_enabled CONFIG_KALLSYMS
$ time ./test-grep.sh
real 0m0.036s
user 0m0.027s
sys m0.009s
[1]: https://lore.kernel.org/all/1919455.eZKeABUfgV@blindfold/
[2]: https://lore.kernel.org/all/20180219092245.26404-1-richard@nod.at/
[3]: https://lore.kernel.org/all/20210920213957.1064-2-richard@nod.at/
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
The complex macro, config_filename, was introduced to do:
[1] drop double-quotes from the string value
[2] add $(srctree)/ prefix in case the file is not found in $(objtree)
[3] escape spaces and more
[1] will be more generally handled by Kconfig later.
As for [2], Kbuild uses VPATH to search for files in $(objtree),
$(srctree) in this order. GNU Make can natively handle it.
As for [3], converting $(space) to $(space_escape) back and forth looks
questionable to me. It is well-known that GNU Make cannot handle file
paths with spaces in the first place.
Instead of using the complex macro, use $< so it will be expanded to
the file path of the key.
Remove config_filename, finally.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Toward the goal of removing the config_filename macro, drop
the double-quotes and add $(srctree)/ prefix in an ad hoc way.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
This dependency is necessary irrespective of the mentioned GCC PR
because the embedded certificates are build artifacts and must be
generated by extract_certs before *.S files are compiled.
The comment sounds like we are hoping to remove these dependencies
someday. No, we cannot remove them.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
'make clean' removes files listed in 'targets'. It is redundant to
specify both 'targets' and 'clean-files'.
Move 'targets' assignments out of the ifeq-conditionals so
scripts/Makefile.clean can see them.
One effective change is that certs/certs/signing_key.x509 is now
deleted by 'make clean' instead of 'make mrproper. This certificate
is embedded in the kernel. It is not used in any way by external
module builds.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
The .incbin directive in certs/system_certificates.S includes
certs/signing_key.x509 and certs/x509_certificate_list, both of which
are generated by extract_certs, i.e. exist in $(objtree).
This option -I$(srctree) is unneeded.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
cmd_extract_certs is defined twice. Unify them.
The current log shows the input file $(2), which might be empty.
You cannot know what is being created from the log, "EXTRACT_CERTS".
Change the log to show the output file with better alignment.
[Before]
EXTRACT_CERTS certs/signing_key.pem
CC certs/system_keyring.o
EXTRACT_CERTS
AS certs/system_certificates.o
CC certs/common.o
CC certs/blacklist.o
EXTRACT_CERTS
AS certs/revocation_certificates.o
[After]
CERT certs/signing_key.x509
CC certs/system_keyring.o
CERT certs/x509_certificate_list
AS certs/system_certificates.o
CC certs/common.o
CC certs/blacklist.o
CERT certs/x509_revocation_list
AS certs/revocation_certificates.o
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Do not repeat $(obj)/x509.genkey or $(obj)/signing_key.pem
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
This script is only used by usr/include/Makefile. Make it local to
the directory.
Update the comment in include/uapi/linux/soundcard.h because
'make headers_check' is no longer functional.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
If the key type of the existing signing key does not match to
CONFIG_MODULE_SIG_KEY_TYPE_*, the Makefile removes it so that it is
re-generated.
Use if_changed so that the key is re-generated when the key type is
changed (that is, the openssl command line is changed).
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Commit 5d06ee20b6 ("modsign: hide openssl output in silent builds")
silenced the key generation log from openssl in silent builds.
Since commit 174a1dcc96 ("kbuild: sink stdout from cmd for silent
build"), the 'cmd' macro can handle it in a cleaner way.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
When you run Kbuild with the parallel option -j, the messages from this
rule and others are interleaved, like follows:
###
CC arch/x86/mm/pat/set_memory.o
### Now generating an X.509 key pair to be used for signing modules.
###
### If this takes a long time, you might wish to run rngd in the
### background to keep the supply of entropy topped up. It
CC arch/x86/events/intel/bts.o
HDRTEST usr/include/linux/qnx4_fs.h
CC arch/x86/events/zhaoxin/core.o
### needs to be run as root, and uses a hardware random
### number generator if one is available.
AR init/built-in.a
###
On modern machines, it does not take a long time to generate the key.
Remove the ugly log messages.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
When x509.genkey is created, it prints a log:
Generating X.509 key generation config
..., which is not the ordinary Kbuild log style.
Check-in the default config as certs/default_x509.genkey to make it
readable, and copy it to certs/x509.genkey if it is not present.
The log is shown in the Kbuild style.
COPY certs/x509.genkey
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
CONFIG_MODULE_SIG_HASH is defined by init/Kconfig. This $(error ...) is
never reachable. (If it is, you need to fix the bug.)
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This is not used or exported.
BUILTIN_DTB is locally defined and used in arch/nds32/boot/dts/Makefile.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
When the condition "MODULE_SIG || (IMA_APPRAISE_MODSIG && MODULES)"
is unmet, you cannot choose anything in the choice, but the choice
menu is still displayed in the menuconfig etc.
Move the 'depends on' to the choice to hide the meaningless menu.
Also delete the redundant 'default'. In a choice, the first entry is
the default.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
The minimum supported version of LLVM has been raised to 11.0.0, meaning
this check is always true, so it can be dropped.
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
The minimum supported version of LLVM has been raised to 11.0.0, meaning
this check is always true, so it can be dropped.
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This reverts commit 7411cfc3c9.
The minimum supported version of LLVM has been raised to 11.0.0, meaning
this check is always true, so it can be dropped.
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
The minimum supported version of LLVM has been raised to 11.0.0, meaning
this check is always true, so it can be dropped.
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
The minimum supported version of LLVM has been raised to 11.0.0, meaning
this check is always true, so it can be dropped.
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
LLVM versions prior to 11.0.0 have a harder time with dead code
elimination, which can cause issues with commonly used expressions such
as BUILD_BUG_ON and the bitmask functions/macros in bitfield.h (see the
first two issues links below).
Whenever there is an issue within LLVM that has been resolved in a later
release, the only course of action is to gate the problematic
configuration or source code on the toolchain verson or raise the
minimum supported version of LLVM for building the kernel, as LLVM has a
limited support lifetime compared to GCC. GCC major releases will
typically see a few point releases across a two year period on average
whereas LLVM major releases are only supported until the next major
release and will only see one or two point releases within that
timeframe. For example, GCC 8.1 was released in May 2018 and GCC 8.5 was
released in May 2021, whereas LLVM 12.0.0 was released in April 2021 and
its only point release, 12.0.1, was released in July 2021, giving a
minimal window for fixes to be backported.
To resolve these build errors around improper dead code elimination,
raise the minimum supported version of LLVM for building the kernel to
11.0.0. Doing so is a more proper solution than mucking around with core
kernel macros that have always worked with GCC or disabling drivers for
using these macros in a proper manner. This type of issue may continue
to crop up and require patching, which creates more debt for bumping the
minimum supported version in the future.
This should have a minimal impact to distributions. Using a script to
pull several different Docker images and check the output of
'clang --version':
archlinux:latest: clang version 13.0.0
debian:oldoldstable-slim: clang version 3.8.1-24 (tags/RELEASE_381/final)
debian:oldstable-slim: clang version 7.0.1-8+deb10u2 (tags/RELEASE_701/final)
debian:stable-slim: Debian clang version 11.0.1-2
debian:testing-slim: Debian clang version 11.1.0-4
debian:unstable-slim: Debian clang version 11.1.0-4
fedora:34: clang version 12.0.1 (Fedora 12.0.1-1.fc34)
fedora:latest: clang version 13.0.0 (Fedora 13.0.0-3.fc35)
fedora:rawhide: clang version 13.0.0 (Fedora 13.0.0-5.fc36)
opensuse/leap:15.2: clang version 9.0.1
opensuse/leap:latest: clang version 11.0.1
opensuse/tumbleweed:latest: clang version 13.0.0
ubuntu:bionic: clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
ubuntu:latest: clang version 10.0.0-4ubuntu1
ubuntu:hirsute: Ubuntu clang version 12.0.0-3ubuntu1~21.04.2
ubuntu:rolling: Ubuntu clang version 13.0.0-2
ubuntu:devel: Ubuntu clang version 13.0.0-9
In every case, the distribution's version of clang is either older than
the current minimum supported version of LLVM 10.0.1 or equal to or
greater than the proposed 11.0.0 so nothing should change.
Another benefit of this change is LLVM=1 works better with arm64 and
x86_64 since commit f12b034afe ("scripts/Makefile.clang: default to
LLVM_IAS=1") enabled the integrated assembler by default, which only
works well with clang 11+ (clang-10 required it to be disabled to
successfully build a kernel).
Link: https://github.com/ClangBuiltLinux/linux/issues/1293
Link: https://github.com/ClangBuiltLinux/linux/issues/1506
Link: https://github.com/ClangBuiltLinux/linux/issues/1511
Link: fa496ce3c6
Link: https://groups.google.com/g/clang-built-linux/c/mPQb9_ZWW0s/m/W7o6S-QTBAAJ
Link: https://github.com/ClangBuiltLinux/misc-scripts
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
When converting a modular kernel to a monolithic kernel, once the kernel
works without loading any modules, this helps to quickly disable all the
modules before turning off module support entirely.
Refactor conf_rewrite_mod_or_yes to a more general
conf_rewrite_tristates that accepts an old and new state.
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Tested-by: Björn Töpel <bjorn@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Misc fixes all over the place.
Revert of virtio used length validation series: the approach taken does
not seem to work, breaking too many guests in the process. We'll need to
do length validation using some other approach.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull vhost,virtio,vdpa bugfixes from Michael Tsirkin:
"Misc fixes all over the place.
Revert of virtio used length validation series: the approach taken
does not seem to work, breaking too many guests in the process. We'll
need to do length validation using some other approach"
[ This merge also ends up reverting commit f7a36b03a7 ("vsock/virtio:
suppress used length validation"), which came in through the
networking tree in the meantime, and was part of that whole used
length validation series - Linus ]
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vdpa_sim: avoid putting an uninitialized iova_domain
vhost-vdpa: clean irqs before reseting vdpa device
virtio-blk: modify the value type of num in virtio_queue_rq()
vhost/vsock: cleanup removing `len` variable
vhost/vsock: fix incorrect used length reported to the guest
Revert "virtio_ring: validate used buffer length"
Revert "virtio-net: don't let virtio core to validate used length"
Revert "virtio-blk: don't let virtio core to validate used length"
Revert "virtio-scsi: don't let virtio core to validate used buffer length"
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Merge tag 'x86-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build fix from Thomas Gleixner:
"A single fix for a missing __init annotation of prepare_command_line()"
* tag 'x86-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot: Mark prepare_command_line() __init
left on the idle task's stack when a CPU is brought up after it was brought
down before.
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Merge tag 'sched-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
"A single scheduler fix to ensure that there is no stale KASAN shadow
state left on the idle task's stack when a CPU is brought up after it
was brought down before"
* tag 'sched-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/scs: Reset task stack state in bringup_cpu()
a trace point event as it's not possible to deliver a synchronous signal to
a different task from there.
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Merge tag 'perf-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Thomas Gleixner:
"A single fix for perf to prevent it from sending SIGTRAP to another
task from a trace point event as it's not possible to deliver a
synchronous signal to a different task from there"
* tag 'perf-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Ignore sigtrap for tracepoints destined for other tasks
- Plug a race in the lock handoff which is caused by inconsistency of the
reader and writer path and can lead to corruption of the underlying
counter.
- down_read_trylock() is suboptimal when the lock is contended and
multiple readers trylock concurrently. That's due to the initial value
being read non-atomically which results in at least two compare exchange
loops. Making the initial readout atomic reduces this significantly.
Whith 40 readers by 11% in a benchmark which enforces contention on
mmap_sem.
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Merge tag 'locking-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner:
"Two regression fixes for reader writer semaphores:
- Plug a race in the lock handoff which is caused by inconsistency of
the reader and writer path and can lead to corruption of the
underlying counter.
- down_read_trylock() is suboptimal when the lock is contended and
multiple readers trylock concurrently. That's due to the initial
value being read non-atomically which results in at least two
compare exchange loops. Making the initial readout atomic reduces
this significantly. Whith 40 readers by 11% in a benchmark which
enforces contention on mmap_sem"
* tag 'locking-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rwsem: Optimize down_read_trylock() under highly contended case
locking/rwsem: Make handoff bit handling more consistent
- The setting of the pid filtering flag tested the "trace only this
pid" case twice, and ignored the "trace everything but this pid" case.
Note, the 5.15 kernel does things a little differently due to the new
sparse pid mask introduced in 5.16, and as the bug was discovered
running the 5.15 kernel, and the first fix was initially done for
that kernel, that fix handled both cases (only pid and all but pid),
but the forward port to 5.16 created this bug.
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Merge tag 'trace-v5.16-rc2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull another tracing fix from Steven Rostedt:
"Fix the fix of pid filtering
The setting of the pid filtering flag tested the "trace only this pid"
case twice, and ignored the "trace everything but this pid" case.
The 5.15 kernel does things a little differently due to the new sparse
pid mask introduced in 5.16, and as the bug was discovered running the
5.15 kernel, and the first fix was initially done for that kernel,
that fix handled both cases (only pid and all but pid), but the
forward port to 5.16 created this bug"
* tag 'trace-v5.16-rc2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Test the 'Do not trace this pid' case in create event
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Merge tag '5.16-rc2-ksmbd-fixes' of git://git.samba.org/ksmbd
Pull ksmbd fixes from Steve French:
"Five ksmbd server fixes, four of them for stable:
- memleak fix
- fix for default data stream on filesystems that don't support xattr
- error logging fix
- session setup fix
- minor doc cleanup"
* tag '5.16-rc2-ksmbd-fixes' of git://git.samba.org/ksmbd:
ksmbd: fix memleak in get_file_stream_info()
ksmbd: contain default data stream even if xattr is empty
ksmbd: downgrade addition info error msg to debug in smb2_get_info_sec()
docs: filesystem: cifs: ksmbd: Fix small layout issues
ksmbd: Fix an error handling path in 'smb2_sess_setup()'
Use the architecture independent Kconfig option PAGE_SIZE_LESS_THAN_64KB
to indicate that VMXNET3 requires a page size smaller than 64kB.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NTFS_RW code allocates page size dependent arrays on the stack. This
results in build failures if the page size is 64k or larger.
fs/ntfs/aops.c: In function 'ntfs_write_mst_block':
fs/ntfs/aops.c:1311:1: error:
the frame size of 2240 bytes is larger than 2048 bytes
Since commit f22969a660 ("powerpc/64s: Default to 64K pages for 64 bit
book3s") this affects ppc:allmodconfig builds, but other architectures
supporting page sizes of 64k or larger are also affected.
Increasing the maximum frame size for affected architectures just to
silence this error does not really help. The frame size would have to
be set to a really large value for 256k pages. Also, a large frame size
could potentially result in stack overruns in this code and elsewhere
and is therefore not desirable. Make NTFS_RW dependent on page sizes
smaller than 64k instead.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NTFS_RW and VMXNET3 require a page size smaller than 64kB. Add generic
Kconfig option for use outside architecture code to avoid architecture
specific Kconfig options in that code.
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When creating a new event (via a module, kprobe, eprobe, etc), the
descriptors that are created must add flags for pid filtering if an
instance has pid filtering enabled, as the flags are used at the time the
event is executed to know if pid filtering should be done or not.
The "Only trace this pid" case was added, but a cut and paste error made
that case checked twice, instead of checking the "Trace all but this pid"
case.
Link: https://lore.kernel.org/all/202111280401.qC0z99JB-lkp@intel.com/
Fixes: 6cb206508b ("tracing: Check pid filtering when creating events")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
- Fix buffer resource leak that could lead to livelock on corrupt fs.
- Remove unused function xfs_inew_wait to shut up the build robots.
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Merge tag 'xfs-5.16-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"Fixes for a resource leak and a build robot complaint about totally
dead code:
- Fix buffer resource leak that could lead to livelock on corrupt fs.
- Remove unused function xfs_inew_wait to shut up the build robots"
* tag 'xfs-5.16-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: remove xfs_inew_wait
xfs: Fix the free logic of state in xfs_attr_node_hasname
- Fix an accounting problem where unaligned inline data reads can run
off the end of the read iomap iterator. iomap has historically
required that inline data mappings only exist at the end of a file,
though this wasn't documented anywhere.
- Document iomap_read_inline_data and change its return type to be
appropriate for the information that it's actually returning.
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Merge tag 'iomap-5.16-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull iomap fixes from Darrick Wong:
"A single iomap bug fix and a cleanup for 5.16-rc2.
The bug fix changes how iomap deals with reading from an inline data
region -- whereas the current code (incorrectly) lets the iomap read
iter try for more bytes after reading the inline region (which zeroes
the rest of the page!) and hopes the next iteration terminates, we
surveyed the inlinedata implementations and realized that all
inlinedata implementations also require that the inlinedata region end
at EOF, so we can simply terminate the read.
The second patch documents these assumptions in the code so that
they're not subtle implications anymore, and cleans up some of the
grosser parts of that function.
Summary:
- Fix an accounting problem where unaligned inline data reads can run
off the end of the read iomap iterator. iomap has historically
required that inline data mappings only exist at the end of a file,
though this wasn't documented anywhere.
- Document iomap_read_inline_data and change its return type to be
appropriate for the information that it's actually returning"
* tag 'iomap-5.16-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
iomap: iomap_read_inline_data cleanup
iomap: Fix inline extent handling in iomap_readpage
- Have created events reflect the current state of pid filtering
- Test pid filtering on discard test of recorded logic.
(Also clean up the if statement to be cleaner).
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Merge tag 'trace-v5.16-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"Two fixes to event pid filtering:
- Make sure newly created events reflect the current state of pid
filtering
- Take pid filtering into account when recording trigger events.
(Also clean up the if statement to be cleaner)"
* tag 'trace-v5.16-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Fix pid filtering when triggers are attached
tracing: Check pid filtering when creating events
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Merge tag 'io_uring-5.16-2021-11-27' of git://git.kernel.dk/linux-block
Pull more io_uring fixes from Jens Axboe:
"The locking fixup that was applied earlier this rc has both a deadlock
and IRQ safety issue, let's get that ironed out before -rc3. This
contains:
- Link traversal locking fix (Pavel)
- Cancelation fix (Pavel)
- Relocate cond_resched() for huge buffer chain freeing, avoiding a
softlockup warning (Ye)
- Fix timespec validation (Ye)"
* tag 'io_uring-5.16-2021-11-27' of git://git.kernel.dk/linux-block:
io_uring: Fix undefined-behaviour in io_issue_sqe
io_uring: fix soft lockup when call __io_remove_buffers
io_uring: fix link traversal locking
io_uring: fail cancellation for EXITING tasks
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Merge tag 'block-5.16-2021-11-27' of git://git.kernel.dk/linux-block
Pull more block fixes from Jens Axboe:
"Turns out that the flushing out of pending fixes before the
Thanksgiving break didn't quite work out in terms of timing, so here's
a followup set of fixes:
- rq_qos_done() should be called regardless of whether or not we're
the final put of the request, it's not related to the freeing of
the state. This fixes an IO stall with wbt that a few users have
reported, a regression in this release.
- Only define zram_wb_devops if it's used, fixing a compilation
warning for some compilers"
* tag 'block-5.16-2021-11-27' of git://git.kernel.dk/linux-block:
zram: only make zram_wb_devops for CONFIG_ZRAM_WRITEBACK
block: call rq_qos_done() before ref check in batch completions
Twelve fixes, eleven in drivers (target, qla2xx, scsi_debug, mpt3sas,
ufs). The core fix is a minor correction to the previous state update
fix for the iscsi daemons.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Twelve fixes, eleven in drivers (target, qla2xx, scsi_debug, mpt3sas,
ufs). The core fix is a minor correction to the previous state update
fix for the iscsi daemons"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: scsi_debug: Zero clear zones at reset write pointer
scsi: core: sysfs: Fix setting device state to SDEV_RUNNING
scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()
scsi: target: configfs: Delete unnecessary checks for NULL
scsi: target: core: Use RCU helpers for INQUIRY t10_alua_tg_pt_gp
scsi: mpt3sas: Fix incorrect system timestamp
scsi: mpt3sas: Fix system going into read-only mode
scsi: mpt3sas: Fix kernel panic during drive powercycle test
scsi: ufs: ufs-mediatek: Add put_device() after of_find_device_by_node()
scsi: scsi_debug: Fix type in min_t to avoid stack OOB
scsi: qla2xxx: edif: Fix off by one bug in qla_edif_app_getfcinfo()
scsi: ufs: ufshpb: Fix warning in ufshpb_set_hpb_read_to_upiu()
Highlights include:
Stable fixes:
- NFSv42: Fix pagecache invalidation after COPY/CLONE
Bugfixes:
- NFSv42: Don't fail clone() just because the server failed to return
post-op attributes
- SUNRPC: use different lockdep keys for INET6 and LOCAL
- NFSv4.1: handle NFS4ERR_NOSPC from CREATE_SESSION
- SUNRPC: fix header include guard in trace header
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Merge tag 'nfs-for-5.16-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client fixes from Trond Myklebust:
"Highlights include:
Stable fixes:
- NFSv42: Fix pagecache invalidation after COPY/CLONE
Bugfixes:
- NFSv42: Don't fail clone() just because the server failed to return
post-op attributes
- SUNRPC: use different lockdep keys for INET6 and LOCAL
- NFSv4.1: handle NFS4ERR_NOSPC from CREATE_SESSION
- SUNRPC: fix header include guard in trace header"
* tag 'nfs-for-5.16-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
SUNRPC: use different lock keys for INET6 and LOCAL
sunrpc: fix header include guard in trace header
NFSv4.1: handle NFS4ERR_NOSPC by CREATE_SESSION
NFSv42: Fix pagecache invalidation after COPY/CLONE
NFS: Add a tracepoint to show the results of nfs_set_cache_invalid()
NFSv42: Don't fail clone() unless the OP_CLONE operation failed
