WARNING: at block/blk-barrier.c:246

From: Jiri Slaby
Date: Sat Nov 22 2008 - 09:07:58 EST

Hi,

after running mmotm a while, I got this:
------------[ cut here ]------------
WARNING: at /home/l/latest/xxx/block/blk-barrier.c:246 blk_do_ordered+0x281/0x2e
0()
Modules linked in: usblp usbhid ath5k hid mac80211 floppy cfg80211 rtc_cmos [las
t unloaded: freq_table]
Pid: 0, comm: swapper Tainted: G W 2.6.28-rc5-mm1_64 #477
Call Trace:
<IRQ> [<ffffffff8023dfef>] warn_on_slowpath+0x5f/0x90
[<ffffffff8034a22c>] ? elv_rb_del+0x2c/0x50
[<ffffffff80356020>] ? __cfq_slice_expired+0x60/0xe0
[<ffffffff80356c9f>] ? cfq_dispatch_requests+0x9f/0x3c0
[<ffffffff8034f641>] blk_do_ordered+0x281/0x2e0
[<ffffffff80349ff4>] elv_next_request+0x44/0x250
[<ffffffff80415a52>] scsi_request_fn+0x72/0x490
[<ffffffff8034cac7>] blk_invoke_request_fn+0x47/0x140
[<ffffffff8034cc75>] __blk_run_queue+0x25/0x30
[<ffffffff8034ccab>] blk_run_queue+0x2b/0x50
[<ffffffff80414e2f>] scsi_run_queue+0xdf/0x380
[<ffffffff803eca65>] ? put_device+0x15/0x20
[<ffffffff8040ef61>] ? __scsi_put_command+0x61/0xa0
[<ffffffff8041522d>] scsi_next_command+0x3d/0x60
[<ffffffff80415304>] scsi_end_request+0xb4/0xd0
[<ffffffff8041543c>] scsi_io_completion+0x11c/0x440
[<ffffffff8042308d>] ? ata_qc_complete+0xbd/0x230
[<ffffffff8040ec1c>] scsi_finish_command+0xac/0xe0
[<ffffffff80415958>] scsi_softirq_done+0xb8/0x140
[<ffffffff803513e5>] blk_done_softirq+0x75/0x90
[<ffffffff80258769>] ? ktime_get_ts+0x59/0x60
[<ffffffff80243d04>] __do_softirq+0x94/0x160
[<ffffffff8020d77c>] call_softirq+0x1c/0x30
[<ffffffff8020ea15>] do_softirq+0x45/0x80
[<ffffffff80243a8d>] irq_exit+0x8d/0xa0
[<ffffffff8020ecb9>] do_IRQ+0xc9/0x110
[<ffffffff8020ca36>] ret_from_intr+0x0/0xa
<EOI> [<ffffffff80213fe2>] ? default_idle+0x42/0x50
[<ffffffff8020ae12>] ? enter_idle+0x22/0x30
[<ffffffff8020aebe>] ? cpu_idle+0x5e/0xb0
[<ffffffff8057c43c>] ? rest_init+0x5c/0x70
---[ end trace 73ac849f8acff99f ]---
------------[ cut here ]------------
WARNING: at /home/l/latest/xxx/block/blk-barrier.c:246 blk_do_ordered+0x281/0x2e
0()
Modules linked in: usblp usbhid ath5k hid mac80211 floppy cfg80211 rtc_cmos [las
t unloaded: freq_table]
Pid: 134, comm: kblockd/0 Tainted: G W 2.6.28-rc5-mm1_64 #477
Call Trace:
[<ffffffff8023dfef>] warn_on_slowpath+0x5f/0x90
[<ffffffff80364a23>] ? sg_init_table+0x23/0x50
[<ffffffff80359309>] ? __next_cpu+0x19/0x30
[<ffffffff8034f641>] blk_do_ordered+0x281/0x2e0
[<ffffffff80349ff4>] elv_next_request+0x44/0x250
[<ffffffff80415a52>] scsi_request_fn+0x72/0x490
[<ffffffff8034c2fb>] __generic_unplug_device+0x2b/0x40
[<ffffffff8034c339>] generic_unplug_device+0x29/0x40
[<ffffffff8034af2b>] blk_unplug_work+0x5b/0x70
[<ffffffff8034aed0>] ? blk_unplug_work+0x0/0x70
[<ffffffff802508c0>] run_workqueue+0x70/0x120
[<ffffffff80250b77>] worker_thread+0xa7/0x120
[<ffffffff80254ee0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff80250ad0>] ? worker_thread+0x0/0x120
[<ffffffff80254ac9>] kthread+0x49/0x90
[<ffffffff8020d419>] child_rip+0xa/0x11
[<ffffffff80254a80>] ? kthread+0x0/0x90
[<ffffffff8020d40f>] ? child_rip+0x0/0x11
---[ end trace 73ac849f8acff99f ]---
------------[ cut here ]------------
WARNING: at /home/l/latest/xxx/block/blk-barrier.c:246 blk_do_ordered+0x281/0x2e
0()
Modules linked in: usblp usbhid ath5k hid mac80211 floppy cfg80211 rtc_cmos [las
t unloaded: freq_table]
Pid: 0, comm: swapper Tainted: G W 2.6.28-rc5-mm1_64 #477
Call Trace:
<IRQ> [<ffffffff8023dfef>] warn_on_slowpath+0x5f/0x90
[<ffffffff8034a22c>] ? elv_rb_del+0x2c/0x50
[<ffffffff80356020>] ? __cfq_slice_expired+0x60/0xe0
[<ffffffff80356c9f>] ? cfq_dispatch_requests+0x9f/0x3c0
[<ffffffff8034f641>] blk_do_ordered+0x281/0x2e0
[<ffffffff80349ff4>] elv_next_request+0x44/0x250
[<ffffffff80415a52>] scsi_request_fn+0x72/0x490
[<ffffffff8034cac7>] blk_invoke_request_fn+0x47/0x140
[<ffffffff8034cc75>] __blk_run_queue+0x25/0x30
[<ffffffff8034ccab>] blk_run_queue+0x2b/0x50
[<ffffffff80414e2f>] scsi_run_queue+0xdf/0x380
[<ffffffff803eca65>] ? put_device+0x15/0x20
[<ffffffff8040ef61>] ? __scsi_put_command+0x61/0xa0
[<ffffffff8041522d>] scsi_next_command+0x3d/0x60
[<ffffffff80415304>] scsi_end_request+0xb4/0xd0
[<ffffffff8041543c>] scsi_io_completion+0x11c/0x440
[<ffffffff8042308d>] ? ata_qc_complete+0xbd/0x230
[<ffffffff8040ec1c>] scsi_finish_command+0xac/0xe0
[<ffffffff80415958>] scsi_softirq_done+0xb8/0x140
[<ffffffff803513e5>] blk_done_softirq+0x75/0x90
[<ffffffff80258769>] ? ktime_get_ts+0x59/0x60
[<ffffffff80243d04>] __do_softirq+0x94/0x160
[<ffffffff8020d77c>] call_softirq+0x1c/0x30
[<ffffffff8020ea15>] do_softirq+0x45/0x80
[<ffffffff80243a8d>] irq_exit+0x8d/0xa0
[<ffffffff8020ecb9>] do_IRQ+0xc9/0x110
[<ffffffff8020ca36>] ret_from_intr+0x0/0xa
<EOI> [<ffffffff80213fe2>] ? default_idle+0x42/0x50
[<ffffffff8020ae12>] ? enter_idle+0x22/0x30
[<ffffffff8020aebe>] ? cpu_idle+0x5e/0xb0
[<ffffffff8057c43c>] ? rest_init+0x5c/0x70
---[ end trace 73ac849f8acff99f ]---
------------[ cut here ]------------
WARNING: at /home/l/latest/xxx/block/blk-barrier.c:246 blk_do_ordered+0x281/0x2e
0()
Modules linked in: usblp usbhid ath5k hid mac80211 floppy cfg80211 rtc_cmos [las
t unloaded: freq_table]
Pid: 134, comm: kblockd/0 Tainted: G W 2.6.28-rc5-mm1_64 #477
Call Trace:
[<ffffffff8023dfef>] warn_on_slowpath+0x5f/0x90
[<ffffffff80364a23>] ? sg_init_table+0x23/0x50
[<ffffffff80359309>] ? __next_cpu+0x19/0x30
[<ffffffff8034f641>] blk_do_ordered+0x281/0x2e0
[<ffffffff80349ff4>] elv_next_request+0x44/0x250
[<ffffffff80415a52>] scsi_request_fn+0x72/0x490
[<ffffffff8034c2fb>] __generic_unplug_device+0x2b/0x40
[<ffffffff8034c339>] generic_unplug_device+0x29/0x40
[<ffffffff8034af2b>] blk_unplug_work+0x5b/0x70
[<ffffffff8034aed0>] ? blk_unplug_work+0x0/0x70
[<ffffffff802508c0>] run_workqueue+0x70/0x120
[<ffffffff80250b77>] worker_thread+0xa7/0x120
[<ffffffff80254ee0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff80250ad0>] ? worker_thread+0x0/0x120
[<ffffffff80254ac9>] kthread+0x49/0x90
[<ffffffff8020d419>] child_rip+0xa/0x11
[<ffffffff80254a80>] ? kthread+0x0/0x90
[<ffffffff8020d40f>] ? child_rip+0x0/0x11
---[ end trace 73ac849f8acff99f ]---
------------[ cut here ]------------
WARNING: at /home/l/latest/xxx/block/blk-barrier.c:246 blk_do_ordered+0x281/0x2e
0()
Modules linked in: usblp usbhid ath5k hid mac80211 floppy cfg80211 rtc_cmos [las
t unloaded: freq_table]
Pid: 0, comm: swapper Tainted: G W 2.6.28-rc5-mm1_64 #477
Call Trace:
<IRQ> [<ffffffff8023dfef>] warn_on_slowpath+0x5f/0x90
[<ffffffff8034a22c>] ? elv_rb_del+0x2c/0x50
[<ffffffff80356020>] ? __cfq_slice_expired+0x60/0xe0
[<ffffffff80356c9f>] ? cfq_dispatch_requests+0x9f/0x3c0
[<ffffffff8034f641>] blk_do_ordered+0x281/0x2e0
[<ffffffff80349ff4>] elv_next_request+0x44/0x250
[<ffffffff80415a52>] scsi_request_fn+0x72/0x490
[<ffffffff8034cac7>] blk_invoke_request_fn+0x47/0x140
[<ffffffff8034cc75>] __blk_run_queue+0x25/0x30
[<ffffffff8034ccab>] blk_run_queue+0x2b/0x50
[<ffffffff80414e2f>] scsi_run_queue+0xdf/0x380
[<ffffffff803eca65>] ? put_device+0x15/0x20
[<ffffffff8040ef61>] ? __scsi_put_command+0x61/0xa0
[<ffffffff8041522d>] scsi_next_command+0x3d/0x60
[<ffffffff80415304>] scsi_end_request+0xb4/0xd0
[<ffffffff8041543c>] scsi_io_completion+0x11c/0x440
[<ffffffff8042308d>] ? ata_qc_complete+0xbd/0x230
[<ffffffff8040ec1c>] scsi_finish_command+0xac/0xe0
[<ffffffff80415958>] scsi_softirq_done+0xb8/0x140
[<ffffffff803513e5>] blk_done_softirq+0x75/0x90
[<ffffffff80258769>] ? ktime_get_ts+0x59/0x60
[<ffffffff80243d04>] __do_softirq+0x94/0x160
[<ffffffff8020d77c>] call_softirq+0x1c/0x30
[<ffffffff8020ea15>] do_softirq+0x45/0x80
[<ffffffff80243a8d>] irq_exit+0x8d/0xa0
[<ffffffff8020ecb9>] do_IRQ+0xc9/0x110
[<ffffffff8020ca36>] ret_from_intr+0x0/0xa
<EOI> [<ffffffff80213fe2>] ? default_idle+0x42/0x50
[<ffffffff8020ae12>] ? enter_idle+0x22/0x30
[<ffffffff8020aebe>] ? cpu_idle+0x5e/0xb0
[<ffffffff8057c43c>] ? rest_init+0x5c/0x70
---[ end trace 73ac849f8acff99f ]---
------------[ cut here ]------------
WARNING: at /home/l/latest/xxx/block/blk-barrier.c:246 blk_do_ordered+0x281/0x2e
0()
Modules linked in: usblp usbhid ath5k hid mac80211 floppy cfg80211 rtc_cmos [las
t unloaded: freq_table]
Pid: 134, comm: kblockd/0 Tainted: G W 2.6.28-rc5-mm1_64 #477
Call Trace:
[<ffffffff8023dfef>] warn_on_slowpath+0x5f/0x90
[<ffffffff80364a23>] ? sg_init_table+0x23/0x50
[<ffffffff80350d9d>] ? blk_rq_map_sg+0x8d/0x2e0
[<ffffffff80359309>] ? __next_cpu+0x19/0x30
[<ffffffff8034f641>] blk_do_ordered+0x281/0x2e0
[<ffffffff80349ff4>] elv_next_request+0x44/0x250
[<ffffffff80415a52>] scsi_request_fn+0x72/0x490
[<ffffffff8034c2fb>] __generic_unplug_device+0x2b/0x40
[<ffffffff8034c339>] generic_unplug_device+0x29/0x40
[<ffffffff8034af2b>] blk_unplug_work+0x5b/0x70
[<ffffffff8034aed0>] ? blk_unplug_work+0x0/0x70
[<ffffffff802508c0>] run_workqueue+0x70/0x120
[<ffffffff80250b77>] worker_thread+0xa7/0x120
[<ffffffff80254ee0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff80250ad0>] ? worker_thread+0x0/0x120
[<ffffffff80254ac9>] kthread+0x49/0x90
[<ffffffff8020d419>] child_rip+0xa/0x11
[<ffffffff80254a80>] ? kthread+0x0/0x90
[<ffffffff8020d40f>] ? child_rip+0x0/0x11
---[ end trace 73ac849f8acff99f ]---

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