[RFC/PATCH RESEND -next 05/21] x86: cpu: don't sanitize early stages of a secondary CPU boot

Andrey Ryabinin a.ryabinin at samsung.com
Thu Jul 10 06:15:21 PDT 2014


On 07/09/14 23:33, Andi Kleen wrote:
> Andrey Ryabinin <a.ryabinin at samsung.com> writes:
> 
>> Instrumentation of this files may result in unbootable machine.
> 
> This doesn't make sense. Is the code not NMI safe? 
> If yes that would need to be fixed because
> 
> Please debug more.
> 

Sure.
It turns out that  KASAN_SANITIZE_perf_event.o := n is not needed here.
The problem only with common.c

> perf is a common source of bugs (see Vice Weaver's fuzzer results),
> so it would be good to have this functionality for it.
> 
> -Andi
> 




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