netdev - Re: [Bugme-new] [Bug 10737] New: pktgen procfs problem

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Message-ID: <20080519222145.GA4828@martell.zuzino.mipt.ru>
Date:	Tue, 20 May 2008 02:21:45 +0400
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	bugme-daemon@...zilla.kernel.org
Cc:	devzero@....de, akpm@...l.org, kaber@...sh.net, den@...nvz.org,
	adobriyan@...allels.com, netdev@...r.kernel.org
Subject: Re: [Bugme-new] [Bug 10737] New: pktgen procfs problem

> list_del corruption. prev->next should be ffff81007e8a5e70, but was 6b6b6b6b6b6b6b6b
> kernel BUG at lib/list_debug.c:67!
>	:pktgen:pktgen_thread_worker+0x374/0x10b0
>	? autoremove_wake_function+0x0/0x40
>	? _spin_unlock_irqrestore+0x42/0x80
>	? :pktgen:pktgen_thread_worker+0x0/0x10b0
>	kthread+0x4d/0x80
>	child_rip+0xa/0x12
>	? restore_args+0x0/0x30
>	? kthread+0x0/0x80
>	? child_rip+0x0/0x12
> RIP  list_del+0x48/0x70

OK, trivial debugging and we know that worker thread function
(pktgen_thread_worker) never ran between kthread creation and rmmod.

Consequently, addition to "pktgen_threads" list happened, list_del of
thread 0 never happened, list_del of thread 1 barfs.

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