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Linus Torvalds d0989d01c6 hardening updates for v6.1-rc1 
Various fixes across several hardening areas:
 
 - loadpin: Fix verity target enforcement (Matthias Kaehlcke).
 
 - zero-call-used-regs: Add missing clobbers in paravirt (Bill Wendling).
 
 - CFI: clean up sparc function pointer type mismatches (Bart Van Assche).
 
 - Clang: Adjust compiler flag detection for various Clang changes (Sami
   Tolvanen, Kees Cook).
 
 - fortify: Fix warnings in arch-specific code in sh, ARM, and xen.
 
 Improvements to existing features:
 
 - testing: improve overflow KUnit test, introduce fortify KUnit test,
   add more coverage to LKDTM tests (Bart Van Assche, Kees Cook).
 
 - overflow: Relax overflow type checking for wider utility.
 
 New features:
 
 - string: Introduce strtomem() and strtomem_pad() to fill a gap in
   strncpy() replacement needs.
 
 - um: Enable FORTIFY_SOURCE support.
 
 - fortify: Enable run-time struct member memcpy() overflow warning.
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Merge tag 'hardening-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull kernel hardening updates from Kees Cook:
 "Most of the collected changes here are fixes across the tree for
  various hardening features (details noted below).

  The most notable new feature here is the addition of the memcpy()
  overflow warning (under CONFIG_FORTIFY_SOURCE), which is the next step
  on the path to killing the common class of "trivially detectable"
  buffer overflow conditions (i.e. on arrays with sizes known at compile
  time) that have resulted in many exploitable vulnerabilities over the
  years (e.g. BleedingTooth).

  This feature is expected to still have some undiscovered false
  positives. It's been in -next for a full development cycle and all the
  reported false positives have been fixed in their respective trees.
  All the known-bad code patterns we could find with Coccinelle are also
  either fixed in their respective trees or in flight.

  The commit message in commit 54d9469bc5 ("fortify: Add run-time WARN
  for cross-field memcpy()") for the feature has extensive details, but
  I'll repeat here that this is a warning _only_, and is not intended to
  actually block overflows (yet). The many patches fixing array sizes
  and struct members have been landing for several years now, and we're
  finally able to turn this on to find any remaining stragglers.

  Summary:

  Various fixes across several hardening areas:

   - loadpin: Fix verity target enforcement (Matthias Kaehlcke).

   - zero-call-used-regs: Add missing clobbers in paravirt (Bill
     Wendling).

   - CFI: clean up sparc function pointer type mismatches (Bart Van
     Assche).

   - Clang: Adjust compiler flag detection for various Clang changes
     (Sami Tolvanen, Kees Cook).

   - fortify: Fix warnings in arch-specific code in sh, ARM, and xen.

  Improvements to existing features:

   - testing: improve overflow KUnit test, introduce fortify KUnit test,
     add more coverage to LKDTM tests (Bart Van Assche, Kees Cook).

   - overflow: Relax overflow type checking for wider utility.

  New features:

   - string: Introduce strtomem() and strtomem_pad() to fill a gap in
     strncpy() replacement needs.

   - um: Enable FORTIFY_SOURCE support.

   - fortify: Enable run-time struct member memcpy() overflow warning"

* tag 'hardening-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (27 commits)
  Makefile.extrawarn: Move -Wcast-function-type-strict to W=1
  hardening: Remove Clang's enable flag for -ftrivial-auto-var-init=zero
  sparc: Unbreak the build
  x86/paravirt: add extra clobbers with ZERO_CALL_USED_REGS enabled
  x86/paravirt: clean up typos and grammaros
  fortify: Convert to struct vs member helpers
  fortify: Explicitly check bounds are compile-time constants
  x86/entry: Work around Clang __bdos() bug
  ARM: decompressor: Include .data.rel.ro.local
  fortify: Adjust KUnit test for modular build
  sh: machvec: Use char[] for section boundaries
  kunit/memcpy: Avoid pathological compile-time string size
  lib: Improve the is_signed_type() kunit test
  LoadPin: Require file with verity root digests to have a header
  dm: verity-loadpin: Only trust verity targets with enforcement
  LoadPin: Fix Kconfig doc about format of file with verity digests
  um: Enable FORTIFY_SOURCE
  lkdtm: Update tests for memcpy() run-time warnings
  fortify: Add run-time WARN for cross-field memcpy()
  fortify: Use SIZE_MAX instead of (size_t)-1
  ...
2022-10-03 17:24:22 -07:00
..
boot x86/boot: Don't propagate uninitialized boot_params->cc_blob_address 2022-08-24 09:03:04 +02:00
coco x86/tdx: Handle load_unaligned_zeropad() page-cross to a shared page 2022-06-17 15:37:33 -07:00
configs xen: branch for v6.0-rc3 2022-08-27 15:38:00 -07:00
crypto x86: Add types to indirectly called assembly functions 2022-09-26 10:13:15 -07:00
entry treewide: Filter out CC_FLAGS_CFI 2022-09-26 10:13:12 -07:00
events PCI interpretation compile fixes 2022-09-01 19:21:27 -04:00
hyperv ARM: 2022-08-04 14:59:54 -07:00
ia32
include hardening updates for v6.1-rc1 2022-10-03 17:24:22 -07:00
kernel kcfi updates for v6.1-rc1 2022-10-03 17:11:07 -07:00
kvm KVM: x86: Hide IA32_PLATFORM_DCA_CAP[31:0] from the guest 2022-09-30 06:38:01 -04:00
lib kcfi updates for v6.1-rc1 2022-10-03 17:11:07 -07:00
math-emu
mm x86/mm: disable instrumentations of mm/pgprot.c 2022-09-11 16:22:30 -07:00
net Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2022-07-22 16:55:44 -07:00
pci x86/PCI: Revert "x86/PCI: Clip only host bridge windows for E820 regions" 2022-06-17 14:24:14 -05:00
platform Bitmap patches for v6.0-rc1 2022-08-07 17:52:35 -07:00
power
purgatory x86/purgatory: Disable CFI 2022-09-26 10:13:16 -07:00
ras
realmode
tools x86/tools/relocs: Ignore __kcfi_typeid_ relocations 2022-09-26 10:13:15 -07:00
um arch: um: Mark the stack non-executable to fix a binutils warning 2022-09-21 09:11:42 +02:00
video
virt/vmx/tdx
xen x86/entry: Work around Clang __bdos() bug 2022-09-26 11:01:32 -07:00
.gitignore x86/purgatory: Omit use of bin2c 2022-07-25 10:32:32 +02:00
Kbuild
Kconfig kcfi updates for v6.1-rc1 2022-10-03 17:11:07 -07:00
Kconfig.assembler
Kconfig.cpu
Kconfig.debug arch: make TRACE_IRQFLAGS_NMI_SUPPORT generic 2022-06-23 15:39:21 +01:00
Makefile x86: enable initial Rust support 2022-09-28 09:02:45 +02:00
Makefile.um
Makefile_32.cpu