Re: [PATCH] kasan: disable stackleak plugin in report code

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To: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Subject: Re: [PATCH] kasan: disable stackleak plugin in report code
From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Tue, 11 Oct 2022 15:00:45 -0700
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Alexander Potapenko <glider@xxxxxxxxxx>, Andrey Konovalov <andreyknvl@xxxxxxxxxx>, mm-commits@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20221011190548.blixlqj6dripitaf@treble>
References: <20221008132113.919b9b894426297de78ac00f@linux-foundation.org> <CAHk-=wigZoriP8ZB+V87Jf+EQV=ka6DQe_HCAQmh3Dmus2FFhw@mail.gmail.com> <Y0UoO2+NsJjbZtaf@hirez.programming.kicks-ass.net> <20221011184444.npthr2pmzqb32x6z@treble> <20221011185907.s3kakdlrxcqr6boh@treble> <20221011190548.blixlqj6dripitaf@treble>

On Tue, Oct 11, 2022 at 12:05 PM Josh Poimboeuf <jpoimboe@xxxxxxxxxx> wrote:
>
> kasan_report() has a uaccess critical section which can't have any
> instrumentation calls in the middle.  Disable the stackleak plugin for
> the report code.

I see Andrew already picked this up, but I can confirm that it
obviously fixes the problem here for me.

I'll get it the usual channels from Andrew.

Thanks,
            Linus

References:
- [GIT PULL] MM updates for 6.1-rc1
  - From: Andrew Morton
- Re: [GIT PULL] MM updates for 6.1-rc1
  - From: Linus Torvalds
- Re: [GIT PULL] MM updates for 6.1-rc1
  - From: Peter Zijlstra
- Re: [GIT PULL] MM updates for 6.1-rc1
  - From: Josh Poimboeuf
- Re: [GIT PULL] MM updates for 6.1-rc1
  - From: Josh Poimboeuf
- [PATCH] kasan: disable stackleak plugin in report code
  - From: Josh Poimboeuf

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