linux-kernel - Re: [PATCH 1/2] unwind: prevent KASAN false positive warnings in guess unwinder

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Date:   Fri, 18 Nov 2016 09:38:25 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     x86@...nel.org, Peter Zijlstra <peterz@...radead.org>,
        Vince Weaver <vincent.weaver@...ne.edu>,
        linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        davej@...emonkey.org.uk, dvyukov@...gle.com,
        Stephane Eranian <eranian@...il.com>
Subject: Re: [PATCH 1/2] unwind: prevent KASAN false positive warnings in
 guess unwinder


* Josh Poimboeuf <jpoimboe@...hat.com> wrote:

> On Thu, Nov 17, 2016 at 09:57:23AM -0600, Josh Poimboeuf wrote:
> > The guess unwinder scans the entire stack, which can cause KASAN
> > "stack-out-of-bounds" false positive warnings.  Tell KASAN to ignore it.
> > 
> > Reported-by: Peter Zijlstra <peterz@...radead.org>
> > Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>
> 
> Whoops, forgot to prefix the patch subjects with "x86/".

No problem, fixed it up.

Thanks,

	Ingo