linux-kernel - Re: [PATCH 1/1] ptrace: make sure do_wait() won't hang after PTRACE

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Date:	Mon, 21 Feb 2011 17:49:08 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	Roland McGrath <roland@...hat.com>,
	Denys Vlasenko <vda.linux@...glemail.com>,
	jan.kratochvil@...hat.com, linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org
Subject: Re: [PATCH 1/1] ptrace: make sure do_wait() won't hang after
	PTRACE_ATTACH

Hi,

I can't write the full reply right now, just one note...

On 02/21, Tejun Heo wrote:
>
> BTW, I plan on separating out all ptrace related stuff into a separate
> struct as it's not used by most tasks anyway, so I don't think we need
> to be too concerned about several more fields.

This is funny.

I already did this change (it even had some review on lkml). And it was
discussed again (on archer@...rceware.org) a couple of days ago. Yes,
probably we should finally do this. Unfortunately, this complicates the
attach-to-all-threads request (new feature), but anyway.

Oleg.

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