Re: Badness in as_completed_request warning

Dave Olien
2003-09-09T06:12:31Z

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On Tue, Sep 09, 2003 at 01:40:57PM +1000, Nick Piggin wrote:
> Hi Dave,
> Can you try 2.6.0-test5 with the following patch please. Thanks
>

I applied this patch, and gave it a shot. It seems to have made things
worse. Instead of the warnings occurring only at the end of the mkfs
runs, they now occur pretty much constantly, and it finally ends
with an Bug_On. Attached is the console output. There are 20
occurrances of Badness in as-iosched.c line 1020. There is one
occurrance of Badness in as-iosched.c line 1025. The Bug_On() is in
as-iosched.c line 1243.

Console output is attached.

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Linux version 2.6.0-test5-NP (dmo@cl045) (gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)) #1 SMP Tue Sep 9 02:52:46 PDT 2003
[root@cl045 root]# Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1025
Call Trace:
[<c021b52c>] as_remove_dispatched_request+0x6c/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Badness in as_remove_dispatched_request at drivers/block/as-iosched.c:1020
Call Trace:
[<c021b582>] as_remove_dispatched_request+0xc2/0x100
[<c02139a9>] elv_remove_request+0x29/0x40
[<c022ca2a>] DAC960_ProcessRequest+0x16a/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

------------[ cut here ]------------
kernel BUG at drivers/block/as-iosched.c:1243!
invalid operand: 0000 [#1]
CPU: 1
EIP: 0060:[<c021ba76>] Not tainted
EFLAGS: 00010046
EIP is at as_dispatch_request+0x236/0x2f0
eax: 00000000 ebx: dfd3cbc0 ecx: 00000000 edx: 00000000
esi: 00000000 edi: 00000001 ebp: 00000000 esp: d9559a38
ds: 007b es: 007b ss: 0068
Process mkfs.ext2 (pid: 1273, threadinfo=d9558000 task=dd5cece0)
Stack: dfd3cbc0 d47b9c60 dff98000 dfd06f80 c0228423 dfd3cbc0 00000000 c1731a00
d9559af8 c021bb68 dfd3cbc0 00000039 c1731a00 c0213886 c1731a00 c1770890
dff98000 00000039 dff98000 c022c8f8 c1731a00 d46c55d8 c1770920 0021bb68
Call Trace:
[<c0228423>] DAC960_LP_QueueCommand+0x43/0xb0
[<c021bb68>] as_next_request+0x38/0x50
[<c0213886>] elv_next_request+0x16/0x110
[<c022c8f8>] DAC960_ProcessRequest+0x38/0x190
[<c022cb2b>] DAC960_RequestFunction+0x2b/0x40
[<c02152ff>] generic_unplug_device+0x6f/0x80
[<c0215bac>] get_request_wait+0x7c/0x100
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0213ad1>] elv_may_queue+0x21/0x30
[<c0120690>] autoremove_wake_function+0x0/0x50
[<c0216315>] __make_request+0xd5/0x580
[<c02168d5>] generic_make_request+0x115/0x1a0
[<c015d917>] bio_alloc+0xd7/0x1c0
[<c02169b4>] submit_bio+0x54/0xa0
[<c015b660>] __block_write_full_page+0x270/0x470
[<c015ceda>] block_write_full_page+0xfa/0x120
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c015fe3f>] blkdev_writepage+0x1f/0x30
[<c015fcc0>] blkdev_get_block+0x0/0x60
[<c017a308>] mpage_writepages+0x208/0x2db
[<c015fe20>] blkdev_writepage+0x0/0x30
[<c016102f>] generic_writepages+0x1f/0x23
[<c014198e>] do_writepages+0x1e/0x40
[<c0178866>] __sync_single_inode+0xc6/0x220
[<c0178c1c>] sync_sb_inodes+0x1ac/0x270
[<c0178d4a>] writeback_inodes+0x6a/0xa0
[<c0141438>] balance_dirty_pages+0xb8/0x160
[<c013e1ad>] generic_file_aio_write_nolock+0x4cd/0xac0
[<c013f1a2>] mempool_free+0x42/0x80
[<c028fc1a>] ip_rcv+0x39a/0x520
[<c013e81e>] generic_file_write_nolock+0x7e/0xa0
[<c011e8e0>] default_wake_function+0x0/0x30
[<c011e8e0>] default_wake_function+0x0/0x30
[<c010d3d9>] handle_IRQ_event+0x49/0x80
[<c01f1265>] tty_write+0x1a5/0x2c0
[<c0160dd7>] blkdev_file_write+0x37/0x40
[<c015844e>] vfs_write+0xbe/0x130
[<c015fec0>] block_llseek+0x0/0x100
[<c0158572>] sys_write+0x42/0x70
[<c010af2d>] sysenter_past_esp+0x52/0x71

Code: 0f 0b db 04 c9 be 30 c0 eb c7 8b 43 48 e9 61 ff ff ff 0f 0b