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Date: Tue, 25 Nov 2003 12:00:15 -0800
From: Mike Fedyk <mfedyk@matchmail.com>
To: Gertjan van Wingerde <gwingerde@home.nl>
Cc: linux-kernel@vger.kernel.org
Subject: Re: EXT-3 bug with 2.6.0-test9
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On Tue, Nov 25, 2003 at 08:51:15PM +0100, Gertjan van Wingerde wrote:
> Hi,
> 
> (Please CC me in any replies, as I'm not subscribed to the list)
> 
> I've just experienced the strange behaviour that my /usr mount auto-magically 
> got mounted read-only, where it was mounted read-write (obviously). 
> Investigating the cause of this I've found the following EXT-3 related BUG in 
> my log-files:
> 
> 	kernel BUG at fs/jbd/journal.c:1733!
> 	invalid operand: 0000 [#1]
> 	CPU:    0
> 	EIP:    0060:[<c01b9bc8>]    Tainted: P  
> 	EFLAGS: 00010282
> 	EIP is at __journal_remove_journal_head+0xf8/0x1c0
> 	eax: 0000006a   ebx: f56a855c   ecx: c02df014   edx: 00000286
> 	esi: df2f2ab0   edi: f7c04800   ebp: df2f2ab0   esp: f3525d80
> 	ds: 007b   es: 007b   ss: 0068
> 	Process kjournald (pid: 49, threadinfo=f3524000 task=f1f1b940)
> 	Stack: c02b1b40 c029fad7 c02b04ff 000006c5 c02b02ff f56a855c f3524000 
> c01b9ccd 
>        f56a855c f56a855c c01b3669 f56a855c cce38180 df2f2ab0 00000000 df2f2db0 
>        c01b4967 f7c04800 df2f2ab0 00000003 00000edf 00000000 f7c04878 00000000 
> 	Call Trace:
> 	 [<c01b9ccd>] journal_remove_journal_head+0x3d/0x80
> 	 [<c01b3669>] journal_refile_buffer+0x89/0xd3
> 	 [<c01b4967>] journal_commit_transaction+0x1167/0x1580
> 	 [<c0121f80>] autoremove_wake_function+0x0/0x50
> 	 [<c0121f80>] autoremove_wake_function+0x0/0x50
> 	 [<c011f72d>] schedule+0x33d/0x6a0
> 	 [<c012ca66>] del_timer_sync+0x26/0x90
> 	 [<c01b75c9>] kjournald+0xe9/0x2d0
> 	 [<c0121f80>] autoremove_wake_function+0x0/0x50
> 	 [<c0121f80>] autoremove_wake_function+0x0/0x50
> 	 [<c0109472>] ret_from_fork+0x6/0x14
> 	 [<c01b74c0>] commit_timeout+0x0/0x10
> 	 [<c01b74e0>] kjournald+0x0/0x2d0
> 	 [<c01072a9>] kernel_thread_helper+0x5/0xc
> 
> 	Code: 0f 0b c5 06 ff 04 2b c0 eb 9c c7 44 24 10 15 03 2b c0 c7 44 
> 	 <6>note: kjournald[49] exited with preempt_count 2
> 
> Also, it looks like the BUG is the result of a large series of events on this 
> EXT-3 file-system. See the following logging generated by the kernel just 
> prior to the BUG.
> 
> Please note that this EXT-3 file-system has been running perfectly for many
> months before.

Did you do anything to this raid array recently, like replace a drive?  What
kind of raid is it (software, hardware, 0, 1, 5?)

Mike
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