linux-kernel - Re: general protection fault on finalizing task

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Message-ID: <20120615094202.GA16768@redhat.com>
Date:	Fri, 15 Jun 2012 11:42:03 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Andrew Wagin <avagin@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	Pavel Emelyanov <xemul@...nvz.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: general protection fault on finalizing task

Hi Andrew,

Thanks lot for testing, I guess we need these fixes in 3.5

But I am puzzled...

On 06/15, Andrew Wagin wrote:
>
> FYI: I bisected this problem.
>
> # git bisect bad
> Bisecting: 0 revisions left to test after this (roughly 0 steps)
> [3208450488ae724196f1efffc457e4265957c04e] pidns: use
> task_active_pid_ns in do_notify_parent
>
> commit 3208450488ae724196f1efffc457e4265957c04e
> Author: Eric W. Biederman <ebiederm@...ssion.com>
> Date:   Thu May 31 16:26:39 2012 -0700
>
>     pidns: use task_active_pid_ns in do_notify_parent

Impossible ;) I think. I'd say it should be the next change

	00c10bc13cdb58447d6bb2a003afad7bd60f5a5f
	"pidns: make killed children autoreap"

which is fine by itself, but makes the problem (hopefully fixed
by -mm patches) more visible.

Oleg.

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