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To: Jan Engelhardt <jengelh@linux01.gwdg.de>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] exec: Only allow a threaded init to exec from the
 thread_group_leader
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From: ebiederm@xmission.com (Eric W. Biederman)
Date: Mon, 30 Jan 2006 13:41:04 -0700
In-Reply-To: <Pine.LNX.4.61.0601301014570.6405@yvahk01.tjqt.qr> (Jan
 Engelhardt's message of "Mon, 30 Jan 2006 10:15:41 +0100 (MET)")
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Jan Engelhardt <jengelh@linux01.gwdg.de> writes:

>>
>>So threading init will work just fine.  The only case that will blow up
>>is calling exec from something that is not the thread group leader.
>>i.e.  If tgid == 1 but pid != 1 the kernel will cause pid == 1 to exit.
>
> Should not it, at its best, replace the whole thread group by the new 
> program and have things carry on?

You see the bug.

Eric