linux-kernel - Re: [PATCH] ptrace: use safer wake up on ptrace

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Date:	Wed, 2 Feb 2011 22:40:59 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Roland McGrath <roland@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Tejun Heo <tj@...nel.org>, jan.kratochvil@...hat.com,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org
Subject: Re: [PATCH] ptrace: use safer wake up on ptrace_detach()

On 02/01, Roland McGrath wrote:
>
> > Am unable to work out why you tagged it for backporting.  It fixes some
> > observed bug?  Perhaps a regression?
>
> No observed bug,

Well, this bug triggered the problem in practice, this was the reason
for 95a3540d.

> I don't think
> this first change is dangerous for -stable, but I have seen no positive
> rationale for pushing it there.

Agreed, I don't really think -stable needs this change, but otoh
it is obviously safe.

Oleg.

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