From: Eric Dumazet <eric.dumazet@gmail.com>
To: "Américo Wang" <xiyou.wangcong@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>,
Florian Mickler <florian@mickler.org>,
Ingo Molnar <mingo@elte.hu>, Dave Chinner <david@fromorbit.com>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [regression, 2.6.37-rc1] 'ip link tap0 up' stuck in do_exit()
Date: Thu, 09 Dec 2010 18:07:54 +0100 [thread overview]
Message-ID: <1291914474.4063.68.camel@edumazet-laptop> (raw)
In-Reply-To: <20101209164748.GA3218@hack>
Le vendredi 10 décembre 2010 à 00:47 +0800, Américo Wang a écrit :
> Yeah, there is no point that a zombie can trigger a BUG_ON in kenrel.
> But it is still interesting to know why it becomes a zombie...
>
A zombie is very easy to get.
Technically speaking, all processes die and become zombies, unless
parent said : signal(SIGCLD, SIG_IGN) before fork()
The parent is buggy (sudo in this case ?) and doesnt call wait() to
'free' one of its children.
next prev parent reply other threads:[~2010-12-09 17:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-03 6:26 [regression, 2.6.37-rc1] 'ip link tap0 up' stuck in do_exit() Dave Chinner
2010-11-03 7:13 ` Eric Dumazet
2010-11-03 10:34 ` Dave Chinner
2010-11-03 11:29 ` Dave Chinner
2010-11-04 0:21 ` Dave Chinner
2010-11-04 5:47 ` Américo Wang
2010-12-08 9:02 ` Florian Mickler
2010-12-08 13:41 ` Oleg Nesterov
2010-12-08 13:47 ` Oleg Nesterov
2010-12-08 14:08 ` Oleg Nesterov
2010-12-09 16:47 ` Américo Wang
2010-12-09 17:07 ` Eric Dumazet [this message]
2010-12-09 17:09 ` Eric Dumazet
2010-12-09 17:59 ` Jim Bos
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