lkml.org 
[lkml]   [2023]   [Jan]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] x86: suppress KMSAN reports in arch_within_stack_frames()
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

\
 
 \ /
  Last update: 2023-03-26 23:37    [W:0.169 / U:1.956 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site