Messages in this thread | | | Date | Fri, 27 Jan 2023 08:12:03 -0800 | From | Eric Biggers <> | Subject | Re: [PATCH] x86: suppress KMSAN reports in arch_within_stack_frames() |
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On Wed, Jan 11, 2023 at 09:40:47PM -0800, Eric Biggers wrote: > On Tue, Nov 29, 2022 at 09:40:45PM -0800, Eric Biggers wrote: > > 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> > > > > Can this patch be applied to the x86 tree, please? > > - Eric
Ping.
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