linux-kernel - Re: [PATCH] secure unlock_task

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Message-ID: <CA+55aFx__ioTKoT3-t3SQOsr6HLB-dNKGWNwJ=AmBPn3FiYQmA@mail.gmail.com>
Date:	Mon, 23 Dec 2013 10:17:01 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	naveen yadav <yad.naveen@...il.com>
Cc:	Oleg Nesterov <oleg@...hat.com>,
	Vaibhav Shinde <v.bhav.shinde@...il.com>,
	Ajeet Yadav <ajeet.yadav.77@...il.com>,
	Tejun Heo <tj@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] secure unlock_task_sighand() call

On Mon, Dec 23, 2013 at 4:29 AM, naveen yadav <yad.naveen@...il.com> wrote:
>
> We are facing OOPS during core dump on kernel 3.8.x on ARM target.
>
> So we were doing core review and found this. We do not know whether
> its big issue but thought to share this considering the problem

Can you please post the oops, just in case that has any more hints.
Maybe the serialization is broken somehow on ARM, or there is some
ARM-specific bug. This code _is_ fairly subtle, but I don't think any
of the patches I've seen so far should really fix anything.

              Linus
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