linux-kernel - Re: [PATCH 1/7] x86: Fix __get

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Message-ID: <202110220925.C2A17F092@keescook>
Date:   Fri, 22 Oct 2021 09:25:38 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        juri.lelli@...hat.com, vincent.guittot@...aro.org,
        dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
        mgorman@...e.de, bristot@...hat.com, akpm@...ux-foundation.org,
        mark.rutland@....com, zhengqi.arch@...edance.com,
        linux@...linux.org.uk, catalin.marinas@....com, will@...nel.org,
        mpe@...erman.id.au, paul.walmsley@...ive.com, palmer@...belt.com,
        hca@...ux.ibm.com, gor@...ux.ibm.com, borntraeger@...ibm.com,
        linux-arch@...r.kernel.org, ardb@...nel.org,
        Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [PATCH 1/7] x86: Fix __get_wchan() for !STACKTRACE

On Fri, Oct 22, 2021 at 05:09:34PM +0200, Peter Zijlstra wrote:
> Use asm/unwind.h to implement wchan, since we cannot always rely on
> STACKTRACE=y.
> 
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Fixes: bc9bbb81730e ("x86: Fix get_wchan() to support the ORC unwinder")
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>

Reviewed-by: Kees Cook <keescook@...omium.org>

-- 
Kees Cook