linux-kernel - Re: 2.6.22-rc6-mm1 -- BUG - EIP: [<c01a77a1>] sysfs_addrm

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Message-ID: <468C9E74.4080606@gmail.com>
Date:	Thu, 05 Jul 2007 16:32:04 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Miles Lane <miles.lane@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, yi.zhu@...el.com,
	jketreno@...ux.intel.com, linux-wireless@...r.kernel.org
Subject: Re: 2.6.22-rc6-mm1 -- BUG - EIP: [<c01a77a1>] sysfs_addrm_finish+0x1c2/0x226
 SS:ESP 0068:c5ff9db8

Hello,

Miles Lane wrote:
> XXX sysfs_deactivate: sd=c36ba6c0 s_sibling=6b6b6b6b s_flags=0x6b6b6b6b
> ------------[ cut here ]------------
> kernel BUG at fs/sysfs/dir.c:274!

OIC, ref counter is too low by one.  The sysfs_dirent is probably
getting freed on sysfs_drop_dentry().  Hmmm... Where did I screw up?
Can you apply the attached patch and report the log after oops?  It
shouldn't generate too much output.

Thanks.

-- 
tejun

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