Re: [PATCH 09/13] powerpc: Disable KMSAN checks on functions which walk the stack

[Nicholas Miehlbradt]

On 14/12/2023 8:00 pm, Christophe Leroy wrote:
> Le 14/12/2023 à 06:55, Nicholas Miehlbradt a écrit :
> > Functions which walk the stack read parts of the stack which cannot be
> > instrumented by KMSAN e.g. the backchain. Disable KMSAN sanitization of
> > these functions to prevent false positives.
>
> Do other architectures have to do it as well ?
>
> I don't see it for show_stack(), is that a specific need for powerpc ?
> Other archs have the annotation on functions called by show_stack(). For 
x86 it's on show_trace_log_lvl() and for s390 it's on __unwind_start() 
and unwind_next_frame().