From: Oleg Nesterov <oleg@tv-sign.ru>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>
Subject: BUG: [RESEND] de_thread()
Date: Sat, 12 Oct 2002 15:36:21 +0400 [thread overview]
Message-ID: <3DA80935.9DF08D08@tv-sign.ru> (raw)
Hello.
On Thu, 10 Oct 2002 Oleg Nesterov wrote:
>
> Suppose process P in thread group was cloned _without_
> CLONE_DETACHED flag. Then another thread, group_leader
> for simplicity, does exec and calls de_thread(). It kills
> P via _broadcast_thread_group(). While doing do_exit(),
> P skips release_task(), because its exit_signal != -1,
> and becomes TASK_ZOMBIE.
>
> Then leader calls schedule() with TASK_UNINTERRUPTIBLE
> in while(oldsig->count > 1) {...} and sleeps forever,
> because nobody can do wake_up_process(sig->group_exit_task).
Oleg.
reply other threads:[~2002-10-12 11:24 UTC|newest]
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