Re: [PATCH] selftests: proc: Make sure wchan works when it exists

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To: Kees Cook <keescook@xxxxxxxxxxxx>
Subject: Re: [PATCH] selftests: proc: Make sure wchan works when it exists
From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Thu, 21 Oct 2021 21:30:33 +0200
Cc: Mark Rutland <mark.rutland@xxxxxxx>, Shuah Khan <shuah@xxxxxxxxxx>, Alexey Dobriyan <adobriyan@xxxxxxxxx>, linux-kselftest@xxxxxxxxxxxxxxx, Josh Poimboeuf <jpoimboe@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Alexey Gladkov <gladkov.alexey@xxxxxxxxx>, jannh@xxxxxxxxxx, vcaputo@xxxxxxxxxxx, mingo@xxxxxxxxxx, juri.lelli@xxxxxxxxxx, vincent.guittot@xxxxxxxxxx, dietmar.eggemann@xxxxxxx, rostedt@xxxxxxxxxxx, bsegall@xxxxxxxxxx, mgorman@xxxxxxx, bristot@xxxxxxxxxx, christian.brauner@xxxxxxxxxx, amistry@xxxxxxxxxx, Kenta.Tada@xxxxxxxx, legion@xxxxxxxxxx, michael.weiss@xxxxxxxxxxxxxxxxxxx, mhocko@xxxxxxxx, deller@xxxxxx, zhengqi.arch@xxxxxxxxxxxxx, me@xxxxxxxx, tycho@tycho.pizza, tglx@xxxxxxxxxxxxx, bp@xxxxxxxxx, hpa@xxxxxxxxx, axboe@xxxxxxxxx, metze@xxxxxxxxx, laijs@xxxxxxxxxxxxxxxxx, luto@xxxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, ebiederm@xxxxxxxxxxxx, ohoono.kwon@xxxxxxxxxxx, kaleshsingh@xxxxxxxxxx, yifeifz2@xxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, vgupta@xxxxxxxxxx, linux@xxxxxxxxxxxxxxx, will@xxxxxxxxxx, guoren@xxxxxxxxxx, bcain@xxxxxxxxxxxxxx, monstr@xxxxxxxxx, tsbogend@xxxxxxxxxxxxxxxx, nickhu@xxxxxxxxxxxxx, jonas@xxxxxxxxxxxx, mpe@xxxxxxxxxxxxxx, paul.walmsley@xxxxxxxxxx, hca@xxxxxxxxxxxxx, ysato@xxxxxxxxxxxxx, davem@xxxxxxxxxxxxx, chris@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-hardening@xxxxxxxxxxxxxxx
In-reply-to: <202110211008.CC8B26A@keescook>

On Thu, Oct 21, 2021 at 10:09:33AM -0700, Kees Cook wrote:

> > Hi Peter,
> > 
> > Can you add this to the wchan series, please? This should help wchan from
> > regressing in the future, and allow us to notice if the depth accidentally
> > changes, like Mark saw.
> > ---
> 
> I'd like to make sure we have a regression test for this. Will you add
> this to the wchan series please?

I have it there, but it's in the part that didn't make it in yet. I'm
currently in the progress of reworking that.

Do you want it it ahead of all that?

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  - From: Kees Cook
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