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Groups > linux.kernel > #1583614

Re: kmemleak splat on copy_process()

From "Luis R. Rodriguez" <mcgrof@kernel.org>
Newsgroups linux.kernel
Subject Re: kmemleak splat on copy_process()
Date 2017-02-17 18:30 +0100
Message-ID <tbUw1-7dc-9@gated-at.bofh.it> (permalink)
References (1 earlier) <t7O5P-3el-5@gated-at.bofh.it> <t82Vc-4qF-11@gated-at.bofh.it> <t890B-gF-13@gated-at.bofh.it> <t8LSh-7Ue-13@gated-at.bofh.it> <tbUcH-76j-27@gated-at.bofh.it>
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On Fri, Feb 17, 2017 at 9:07 AM, Andy Lutomirski <luto@amacapital.net> wrote:
> But maybe
> there really is a race in which a kmemleak check right in the middle
> of duplicating the task struct really can't see the stack pointer.

Funny, but it was actually using kmemleak how I can easily reproduce:

To reproduce the kmemleak splat:

echo clear >  /sys/kernel/debug/kmemleak
echo scan >  /sys/kernel/debug/kmemleak
cat /sys/kernel/debug/kmemleak

Try that.

 Luis

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Thread

Re: kmemleak splat on copy_process() Andy Lutomirski <luto@amacapital.net> - 2017-02-17 18:10 +0100
  Re: kmemleak splat on copy_process() "Luis R. Rodriguez" <mcgrof@kernel.org> - 2017-02-17 18:30 +0100
    Re: kmemleak splat on copy_process() Andy Lutomirski <luto@amacapital.net> - 2017-02-17 20:40 +0100

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