Messages in this thread | | | Date | Tue, 29 Nov 2022 21:40:42 -0800 | From | Eric Biggers <> | Subject | Re: [PATCH] x86: suppress KMSAN reports in arch_within_stack_frames() |
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On Fri, Nov 18, 2022 at 06:23:05PM +0100, Alexander Potapenko wrote: > arch_within_stack_frames() performs stack walking and may confuse > KMSAN by stepping on stale shadow values. To prevent false positive > reports, disable KMSAN checks in this function. > > This fixes KMSAN's interoperability with CONFIG_HARDENED_USERCOPY. > > Link: https://github.com/google/kmsan/issues/89 > Link: https://lore.kernel.org/lkml/Y3b9AAEKp2Vr3e6O@sol.localdomain/ > Cc: Eric Biggers <ebiggers@kernel.org> > Signed-off-by: Alexander Potapenko <glider@google.com> > --- > arch/x86/include/asm/thread_info.h | 5 +++++ > 1 file changed, 5 insertions(+)
Tested-by: Eric Biggers <ebiggers@google.com>
- Eric
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