linux-ext4 - [Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode

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Message-Id: <201007271420.o6REKjLj018703@demeter.kernel.org>
Date:	Tue, 27 Jul 2010 14:20:45 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

https://bugzilla.kernel.org/show_bug.cgi?id=16312





--- Comment #13 from Larry Finger <Larry.Finger@...inger.net>  2010-07-27 14:20:44 ---
The log will have to be hand written. The system would not boot, neither a
netconsole or serial console is possible, and the pictures I took of the screen
are really blurry.

The beginning of the dump is:

Inode devices at sysfs has uninit bdi
Mapping bdi sysfs, caps 131
inode_to_bdi returns bdi noop, caps 0
bdi=noop not registered
BUG: unable to handle NULL pointer at offset 0x8
__mark_inode_dirty+0x159/0x240

The above NULL pointer is in the expansion of

      list_move(&inode->i_list, &wb->b_dirty);

at the statement next->prev = new

Beyond this point, it generates lots of other errors and eventually hangs.

Good luck.

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