From: Jens Axboe <axboe@suse.de>
To: Lorenzo Allegrucci <l_allegrucci@yahoo.it>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: 2.6.9-mm1 oops
Date: Sun, 24 Oct 2004 14:30:19 +0200 [thread overview]
Message-ID: <20041024123016.GA31870@suse.de> (raw)
In-Reply-To: <200410231731.21778.l_allegrucci@yahoo.it>
On Sat, Oct 23 2004, Lorenzo Allegrucci wrote:
>
> 100% reproducible with elevator=cfq
but not with the other io schedulers?
> Unable to handle kernel NULL pointer dereference at virtual address 00000000
> printing eip:
> c013f2c7
> *pde = 00000000
> Oops: 0000 [#1]
> PREEMPT
> Modules linked in: ipv6 dm_mod emu10k1 sound soundcore ac97_codec unix
> CPU: 0
> EIP: 0060:[put_page+7/144] Not tainted VLI
> EFLAGS: 00010282 (2.6.9-mm1)
> EIP is at put_page+0x7/0x90
> eax: 00000000 ebx: df047400 ecx: 00000000 edx: 00000000
> esi: 00000000 edi: 00000000 ebp: df047400 esp: cadd0c80
> ds: 007b es: 007b ss: 0068
> Process diotest4 (pid: 4498, threadinfo=cadd0000 task=de712a40)
> Stack: df047400 c0178d50 00000000 00000000 c0179c91 df047400 00000001 c01b391b
> c86b6b00 cb0c9b80 cadd0d1c cb0c9c38 c019d31e cee0b0b0 00000000 00000000
> 00003000 00000000 df047400 00000000 08051000 0000000c c017a182 00000001
> Call Trace:
> [dio_cleanup+48/64] dio_cleanup+0x30/0x40
> [direct_io_worker+817/1568] direct_io_worker+0x331/0x620
> [journal_put_journal_head+59/192] journal_put_journal_head+0x3b/0xc0
> [ext3_do_update_inode+366/944] ext3_do_update_inode+0x16e/0x3b0
> [__blockdev_direct_IO+514/752] __blockdev_direct_IO+0x202/0x2f0
> [ext3_direct_io_get_blocks+0/240] ext3_direct_io_get_blocks+0x0/0xf0
> [ext3_direct_IO+201/576] ext3_direct_IO+0xc9/0x240
> [ext3_direct_io_get_blocks+0/240] ext3_direct_io_get_blocks+0x0/0xf0
> [generic_file_direct_IO+121/160] generic_file_direct_IO+0x79/0xa0
> [generic_file_direct_write+134/416] generic_file_direct_write+0x86/0x1a0
> [generic_file_aio_write_nolock+689/1200] generic_file_aio_write_nolock+0x2b1/0x4b0
> [generic_file_aio_write+131/256] generic_file_aio_write+0x83/0x100
> [ext3_file_write+68/224] ext3_file_write+0x44/0xe0
> [do_sync_write+190/240] do_sync_write+0xbe/0xf0
> [autoremove_wake_function+0/96] autoremove_wake_function+0x0/0x60
> [dnotify_parent+162/224] dnotify_parent+0xa2/0xe0
> [do_sync_write+0/240] do_sync_write+0x0/0xf0
> [vfs_write+184/304] vfs_write+0xb8/0x130
> [sys_write+81/128] sys_write+0x51/0x80
> [syscall_call+7/11] syscall_call+0x7/0xb
Please provide a test case, or at least a description of the problem.
--
Jens Axboe
next prev parent reply other threads:[~2004-10-24 12:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-23 15:31 Lorenzo Allegrucci
2004-10-24 12:30 ` Jens Axboe [this message]
2004-10-24 14:20 ` Lorenzo Allegrucci
2004-10-24 20:02 ` Lorenzo Allegrucci
2004-10-25 8:45 ` Lorenzo Allegrucci
2004-10-25 8:55 ` Jens Axboe
2004-10-25 10:05 ` Jens Axboe
2004-10-25 10:27 ` Jens Axboe
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