From: Tejun Heo <htejun@gmail.com>
To: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: gregkh@suse.de, maneesh@in.ibm.com, dmitry.torokhov@gmail.com,
oneukum@suse.de, rpurdie@rpsys.net, James.Bottomley@SteelEye.com,
stern@rowland.harvard.edu, linux-kernel@vger.kernel.org
Subject: Re: [PATCHSET #master] sysfs: make sysfs disconnect immediately on deletion, take 2
Date: Wed, 11 Apr 2007 13:18:38 +0900 [thread overview]
Message-ID: <461C619E.5040705@gmail.com> (raw)
In-Reply-To: <20070410164416.63469474@gondolin.boeblingen.de.ibm.com>
Cornelia Huck wrote:
> On Mon, 9 Apr 2007 13:18:46 +0900,
> Tejun Heo <htejun@gmail.com> wrote:
>
>> With all the patches applied, the same test used in the last take ran
>> 9+hrs without any problem.
>
> I get the following on startup:
>
> =====================================
> [ BUG: bad unlock balance detected! ]
> -------------------------------------
> start_udev/197 is trying to release lock (&sd->s_active) at:
> [<0000000000209024>] release_sysfs_dirent+0x8c/0x118
> but there are no more locks to release!
Thanks a lot for spotting this. I thought I enabled lock debugging but
apparently, didn't. Anyways, the bug doesn't affect actual behavior.
It's just doing up_write() on an unlocked rwsem which is about to be
freed. I've just posted the updated version of patch 12 to fix this.
--
tejun
next prev parent reply other threads:[~2007-04-11 4:18 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-09 4:18 [PATCHSET #master] sysfs: make sysfs disconnect immediately on deletion, take 2 Tejun Heo
2007-04-09 4:18 ` [PATCH 03/14] sysfs: move release_sysfs_dirent() to dir.c Tejun Heo
2007-04-09 4:18 ` [PATCH 01/14] sysfs: fix i_ino handling in sysfs Tejun Heo
2007-04-27 15:29 ` Eric Sandeen
2007-04-27 15:32 ` Greg KH
2007-04-27 16:04 ` Eric Sandeen
2007-04-09 4:18 ` [PATCH 05/14] sysfs: consolidate sysfs_dirent creation functions Tejun Heo
2007-04-09 4:18 ` [PATCH 04/14] sysfs: flatten cleanup paths in sysfs_add_link() and create_dir() Tejun Heo
2007-04-09 4:18 ` [PATCH 02/14] sysfs: fix error handling in binattr write() Tejun Heo
2007-04-09 4:18 ` [PATCH 11/14] sysfs: implement bin_buffer Tejun Heo
2007-04-09 4:18 ` [PATCH 07/14] sysfs: add sysfs_dirent->s_name Tejun Heo
2007-04-09 4:18 ` [PATCH 10/14] sysfs: reimplement symlink using sysfs_dirent tree Tejun Heo
2007-04-09 4:18 ` [PATCH 06/14] sysfs: add sysfs_dirent->s_parent Tejun Heo
2007-04-09 4:18 ` [PATCH 08/14] sysfs: make sysfs_dirent->s_element a union Tejun Heo
2007-04-09 4:18 ` [PATCH 09/14] sysfs: implement kobj_sysfs_assoc_lock Tejun Heo
2007-04-09 4:18 ` [PATCH 12/14] sysfs: implement sysfs_dirent active reference and immediate disconnect Tejun Heo
2007-04-11 4:15 ` [PATCH 12/14 UPDATED] " Tejun Heo
2007-04-11 9:00 ` Cornelia Huck
2007-04-11 9:26 ` Tejun Heo
2007-04-11 9:32 ` Tejun Heo
2007-04-11 10:13 ` Tejun Heo
2007-04-11 10:26 ` Cornelia Huck
2007-04-12 7:18 ` Greg KH
2007-04-12 7:39 ` Greg KH
2007-04-09 4:18 ` [PATCH 14/14] sysfs: kill unnecessary attribute->owner Tejun Heo
2007-04-10 14:17 ` Cornelia Huck
2007-04-10 14:30 ` Cornelia Huck
2007-04-11 4:21 ` Tejun Heo
2007-04-11 4:25 ` [PATCH 14/14 UPDATED] " Tejun Heo
2007-04-09 4:18 ` [PATCH 13/14] sysfs: kill attribute file orphaning Tejun Heo
2007-04-10 14:44 ` [PATCHSET #master] sysfs: make sysfs disconnect immediately on deletion, take 2 Cornelia Huck
2007-04-11 4:18 ` Tejun Heo [this message]
2007-04-16 8:22 ` Maneesh Soni
2007-04-17 5:06 ` Tejun Heo
2007-04-17 12:42 ` Tejun Heo
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