From: Martin Schlemmer <azarah@nosferatu.za.org>
To: Petr Vandrovec <vandrove@vc.cvut.cz>
Cc: Linux Kernel Mailing Lists <linux-kernel@vger.kernel.org>
Subject: Re: Problem with exiting threads under NPTL
Date: Sun, 14 Dec 2003 17:02:03 +0200 [thread overview]
Message-ID: <1071414122.4987.80.camel@nosferatu.lan> (raw)
In-Reply-To: <20031214052516.GA313@vana.vc.cvut.cz>
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On Sun, 2003-12-14 at 07:25, Petr Vandrovec wrote:
> Hi,
> several times one of our threads ended up as ZOMBIE and
> nobody wants to pick him up - even init ignores it. Inspection
> of kernel structures revealed that task's exit code is 0,
> exit_signal is -1, ptrace is 0 and state is 8 (ZOMBIE).
>
> So if some process ignores SIGCHLD, and spawns child process
> which creates additional thread, and main thread in child exits
> before child it created, you'll end up with immortal zombie.
>
I can confirm this behavior here, although I must admit I do not
know if the sample code is legal. Latest glibc from cvs + bk kernel.
Cheers,
--
Martin Schlemmer
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next prev parent reply other threads:[~2003-12-14 15:00 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-14 5:25 Problem with exiting threads under NPTL Petr Vandrovec
2003-12-14 15:02 ` Martin Schlemmer [this message]
2003-12-14 19:38 ` [patch] " Ingo Molnar
2003-12-14 20:38 ` Linus Torvalds
2003-12-14 20:45 ` Linus Torvalds
2003-12-14 21:02 ` Ingo Molnar
2003-12-15 15:04 ` Jörn Engel
2003-12-14 21:06 ` Ingo Molnar
2003-12-14 22:10 ` Linus Torvalds
2003-12-14 22:17 ` Ingo Molnar
2003-12-14 22:32 ` Linus Torvalds
2003-12-15 23:04 ` Roland McGrath
2003-12-14 22:28 ` Ingo Molnar
2003-12-14 22:45 ` Linus Torvalds
2003-12-14 23:08 ` Ingo Molnar
2003-12-15 6:31 ` dan carpenter
2003-12-15 11:43 ` Ingo Molnar
2003-12-15 13:07 ` dan carpenter
2003-12-15 15:11 ` Linus Torvalds
2003-12-15 23:15 ` Roland McGrath
2003-12-15 8:54 ` Arjan van de Ven
2003-12-15 22:55 ` Roland McGrath
2003-12-15 23:06 ` Roland McGrath
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