Re: [PATCH 2/3] kasan: move kasan_report() into report.c

From: Josh Poimboeuf
Date: Thu May 28 2020 - 10:33:58 EST


On Thu, May 28, 2020 at 09:49:13AM -0400, Qian Cai wrote:
> On Tue, May 12, 2020 at 05:33:20PM +0200, 'Andrey Konovalov' via kasan-dev wrote:
> > The kasan_report() functions belongs to report.c, as it's a common
> > functions that does error reporting.
> >
> > Reported-by: Leon Romanovsky <leon@xxxxxxxxxx>
> > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
>
> Today's linux-next produced this with Clang 11.
>
> mm/kasan/report.o: warning: objtool: kasan_report()+0x8a: call to __stack_chk_fail() with UACCESS enabled
>
> kasan_report at mm/kasan/report.c:536

Peter, this was also reported with GCC about a month ago. Should we add
__stack_chk_fail() to the uaccess safe list?

--
Josh