linux-kernel - Re: (NFS) BUG: at page-writeback.c:829 [Was: 2.6.22-rc1-mm1]

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Date:	Wed, 16 May 2007 14:44:54 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	Nick Piggin <nickpiggin@...oo.com.au>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, trond.myklebust@....uio.no
Subject: Re: (NFS) BUG: at page-writeback.c:829 [Was: 2.6.22-rc1-mm1]

Nick Piggin napsal(a):
> Jiri Slaby wrote:
>> Andrew Morton napsal(a):
>>
>>> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc1/2.6.22-rc1-mm1/
>>>
>>
>>
>> I've got this in dmesg:
>>
>> BUG: at /local/xslaby/xxx/mm/page-writeback.c:829
>> __set_page_dirty_nobuffers()
>>  [<c010531e>] dump_trace+0x1ce/0x200
>>  [<c010536a>] show_trace_log_lvl+0x1a/0x30
>>  [<c0106012>] show_trace+0x12/0x20
>>  [<c0106086>] dump_stack+0x16/0x20
>>  [<c015566d>] __set_page_dirty_nobuffers+0x11d/0x130
>>  [<c0155690>] redirty_page_for_writepage+0x10/0x20
>>  [<c01938fc>] __block_write_full_page+0x20c/0x330
>>  [<c0193b0a>] block_write_full_page+0xea/0x100
>>  [<c0196c82>] blkdev_writepage+0x12/0x20
>>  [<c015539e>] __writepage+0xe/0x30
>>  [<c01558c2>] write_cache_pages+0x222/0x340
>>  [<c0155a03>] generic_writepages+0x23/0x30
>>  [<c0155a3e>] do_writepages+0x2e/0x50
>>  [<c018decb>] __writeback_single_inode+0x8b/0x470
>>  [<c018e75b>] generic_sync_sb_inodes+0x24b/0x470
>>  [<c018e9a7>] sync_sb_inodes+0x27/0x30
>>  [<c018ec33>] writeback_inodes+0xb3/0xe0
>>  [<c01560f2>] wb_kupdate+0x82/0xf0
>>  [<c015660b>] pdflush+0xeb/0x1b0
>>  [<c0132e72>] kthread+0x42/0x70
>>  [<c0104d4b>] kernel_thread_helper+0x7/0x1c
> 
> Do you have any messages before this one? Seems like it is probably
> metadata,
> but we've only caught it at the last minute...

No other messages before that. Bazillion through-nfs stacks after this...

regards,
-- 
http://www.fi.muni.cz/~xslaby/            Jiri Slaby
faculty of informatics, masaryk university, brno, cz
e-mail: jirislaby gmail com, gpg pubkey fingerprint:
 B674 9967 0407 CE62 ACC8  22A0 32CC 55C3 39D4 7A7E
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