From: Josef Bacik <jbacik@fusionio.com>
To: Stefan Priebe <s.priebe@profihost.ag>
Cc: "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Re: btrfs deadlock in 3.5-rc3
Date: Mon, 25 Jun 2012 09:08:39 -0400 [thread overview]
Message-ID: <4FE862D7.3060005@fusionio.com> (raw)
In-Reply-To: <4FE58366.8000302@profihost.ag>
On 06/23/2012 04:50 AM, Stefan Priebe wrote:
> Hello list,
>
> i've seen this deadlock today and can reproduce it while using ceph.
>
> Is this a known bug?
>
> [ 599.514534] INFO: task kworker/6:0:29 blocked for more than 120 seconds.
> [ 599.530394] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 599.546832] kworker/6:0 D ffffffff8180ebc0 0 29 2
> 0x00000000
> [ 599.563725] ffff880e78f4dc90 0000000000000046 ffff880e78f4a180
> 0000000000012280
> [ 599.580812] ffff880e78f4dfd8 ffff880e78f4c010 0000000000012280
> 0000000000012280
> [ 599.580813] ffff880e78f4dfd8 0000000000012280 ffff880e78e8c340
> ffff880e78f4a180
> [ 599.580814] Call Trace:
> [ 599.580820] [<ffffffff81620334>] schedule+0x24/0x70
> [ 599.580832] [<ffffffffa009b4c5>] wait_for_commit+0x55/0x90 [btrfs]
> [ 599.580836] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 599.580844] [<ffffffffa009d095>]
> btrfs_commit_transaction+0x655/0xab0 [btrfs]
> [ 599.580846] [<ffffffff81076058>] ? idle_balance+0x108/0x130
> [ 599.580847] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 599.580853] [<ffffffffa009d7f0>] ? btrfs_end_transaction+0x20/0x20
> [btrfs]
> [ 599.580859] [<ffffffffa009d80a>] do_async_commit+0x1a/0x30 [btrfs]
> [ 599.580861] [<ffffffff81058eff>] process_one_work+0x11f/0x470
> [ 599.580862] [<ffffffff8105b128>] worker_thread+0x178/0x400
> [ 599.580863] [<ffffffff8105afb0>] ? manage_workers+0x210/0x210
> [ 599.580865] [<ffffffff8105fc46>] kthread+0x96/0xa0
> [ 599.580866] [<ffffffff81622dd4>] kernel_thread_helper+0x4/0x10
> [ 599.580868] [<ffffffff8105fbb0>] ? kthread_worker_fn+0x130/0x130
> [ 599.580869] [<ffffffff81622dd0>] ? gs_change+0xb/0xb
> [ 599.580872] INFO: task kworker/2:1:1184 blocked for more than 120
> seconds.
> [ 599.580872] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 599.580873] kworker/2:1 D ffffffff8180ebc0 0 1184 2
> 0x00000000
> [ 599.580874] ffff880e448cfc90 0000000000000046 ffff880e46cce380
> 0000000000012280
> [ 599.580875] ffff880e448cffd8 ffff880e448ce010 0000000000012280
> 0000000000012280
> [ 599.580876] ffff880e448cffd8 0000000000012280 ffff880e78e5a240
> ffff880e46cce380
> [ 599.580877] Call Trace:
> [ 599.580879] [<ffffffff81620334>] schedule+0x24/0x70
> [ 599.580884] [<ffffffffa009b4c5>] wait_for_commit+0x55/0x90 [btrfs]
> [ 599.580886] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 599.580891] [<ffffffffa009d095>]
> btrfs_commit_transaction+0x655/0xab0 [btrfs]
> [ 599.580893] [<ffffffff81076058>] ? idle_balance+0x108/0x130
> [ 599.580894] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 599.580899] [<ffffffffa009d7f0>] ? btrfs_end_transaction+0x20/0x20
> [btrfs]
> [ 599.580905] [<ffffffffa009d80a>] do_async_commit+0x1a/0x30 [btrfs]
> [ 599.580906] [<ffffffff81058eff>] process_one_work+0x11f/0x470
> [ 599.580907] [<ffffffff8105b128>] worker_thread+0x178/0x400
> [ 599.580908] [<ffffffff8105afb0>] ? manage_workers+0x210/0x210
> [ 599.580910] [<ffffffff8105fc46>] kthread+0x96/0xa0
> [ 599.580911] [<ffffffff81622dd4>] kernel_thread_helper+0x4/0x10
> [ 599.580913] [<ffffffff8105fbb0>] ? kthread_worker_fn+0x130/0x130
> [ 599.580914] [<ffffffff81622dd0>] ? gs_change+0xb/0xb
> [ 599.580915] INFO: task kworker/5:1:1186 blocked for more than 120
> seconds.
> [ 599.580915] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 599.580916] kworker/5:1 D ffffffff8180ebc0 0 1186 2
> 0x00000000
> [ 599.580917] ffff880e448a3c90 0000000000000046 ffff880e46d36600
> 0000000000012280
> [ 599.580919] ffff880e448a3fd8 ffff880e448a2010 0000000000012280
> 0000000000012280
> [ 599.580920] ffff880e448a3fd8 0000000000012280 ffff880e78e88300
> ffff880e46d36600
> [ 599.580920] Call Trace:
> [ 599.580922] [<ffffffff81620334>] schedule+0x24/0x70
> [ 599.580927] [<ffffffffa009b4c5>] wait_for_commit+0x55/0x90 [btrfs]
> [ 599.580929] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 599.580934] [<ffffffffa009d095>]
> btrfs_commit_transaction+0x655/0xab0 [btrfs]
> [ 599.580936] [<ffffffff81076058>] ? idle_balance+0x108/0x130
> [ 599.580937] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 599.580942] [<ffffffffa009d7f0>] ? btrfs_end_transaction+0x20/0x20
> [btrfs]
> [ 599.580948] [<ffffffffa009d80a>] do_async_commit+0x1a/0x30 [btrfs]
> [ 599.580949] [<ffffffff81058eff>] process_one_work+0x11f/0x470
> [ 599.580950] [<ffffffff8105b128>] worker_thread+0x178/0x400
> [ 599.580951] [<ffffffff8105afb0>] ? manage_workers+0x210/0x210
> [ 599.580952] [<ffffffff8105fc46>] kthread+0x96/0xa0
> [ 599.580954] [<ffffffff81622dd4>] kernel_thread_helper+0x4/0x10
> [ 599.580955] [<ffffffff8105fbb0>] ? kthread_worker_fn+0x130/0x130
> [ 599.580957] [<ffffffff81622dd0>] ? gs_change+0xb/0xb
> [ 599.580966] INFO: task ceph-osd:3248 blocked for more than 120 seconds.
> [ 599.580966] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 599.580967] ceph-osd D 0000000000000006 0 3248 1
> 0x00000000
> [ 599.580968] ffff880bc4201c38 0000000000000082 ffff880e3efc4480
> 0000000000012280
> [ 599.580970] ffff880bc4201fd8 ffff880bc4200010 0000000000012280
> 0000000000012280
> [ 599.580971] ffff880bc4201fd8 0000000000012280 ffff880e78f4a180
> ffff880e3efc4480
> [ 599.580971] Call Trace:
> [ 599.580972] [<ffffffff81620334>] schedule+0x24/0x70
> [ 599.580978] [<ffffffffa009dd65>]
> btrfs_commit_transaction_async+0x1d5/0x240 [btrfs]
> [ 599.580983] [<ffffffffa0081eb6>] ? block_rsv_add_bytes+0x26/0x60 [btrfs]
> [ 599.580985] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 599.580990] [<ffffffffa0081f25>] ? block_rsv_migrate_bytes+0x35/0x50
> [btrfs]
> [ 599.580997] [<ffffffffa00ced2e>] btrfs_mksubvol+0x2be/0x350 [btrfs]
> [ 599.581004] [<ffffffffa00ceec9>]
> btrfs_ioctl_snap_create_transid+0x109/0x1a0 [btrfs]
> [ 599.581010] [<ffffffffa00d0bc4>]
> btrfs_ioctl_snap_create_v2+0x84/0xf0 [btrfs]
> [ 599.581016] [<ffffffffa00d353f>] btrfs_ioctl+0x76f/0x12d0 [btrfs]
> [ 599.581019] [<ffffffff8114459a>] ? fsnotify+0x1ba/0x2e0
> [ 599.581021] [<ffffffff8111ade3>] do_vfs_ioctl+0x93/0x4f0
> [ 599.581022] [<ffffffff8111b28a>] sys_ioctl+0x4a/0x80
> [ 599.581024] [<ffffffff81621ba2>] system_call_fastpath+0x16/0x1b
> [ 599.581035] INFO: task ceph-osd:3278 blocked for more than 120 seconds.
> [ 599.581035] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 599.581036] ceph-osd D 0000000000000002 0 3278 1
> 0x00000000
> [ 599.581038] ffff880bc41fbc38 0000000000000082 ffff880e412283c0
> 0000000000012280
> [ 599.581039] ffff880bc41fbfd8 ffff880bc41fa010 0000000000012280
> 0000000000012280
> [ 599.581040] ffff880bc41fbfd8 0000000000012280 ffff880e46cce380
> ffff880e412283c0
> [ 599.581040] Call Trace:
> [ 599.581042] [<ffffffff81620334>] schedule+0x24/0x70
> [ 599.581048] [<ffffffffa009dd65>]
> btrfs_commit_transaction_async+0x1d5/0x240 [btrfs]
> [ 599.581053] [<ffffffffa0081eb6>] ? block_rsv_add_bytes+0x26/0x60 [btrfs]
> [ 599.581055] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 599.581059] [<ffffffffa0081f25>] ? block_rsv_migrate_bytes+0x35/0x50
> [btrfs]
> [ 599.581066] [<ffffffffa00ced2e>] btrfs_mksubvol+0x2be/0x350 [btrfs]
> [ 599.581071] [<ffffffffa00ceec9>]
> btrfs_ioctl_snap_create_transid+0x109/0x1a0 [btrfs]
> [ 599.581077] [<ffffffffa00d0bc4>]
> btrfs_ioctl_snap_create_v2+0x84/0xf0 [btrfs]
> [ 599.581082] [<ffffffffa00d353f>] btrfs_ioctl+0x76f/0x12d0 [btrfs]
> [ 599.581084] [<ffffffff8114459a>] ? fsnotify+0x1ba/0x2e0
> [ 599.581085] [<ffffffff8111ade3>] do_vfs_ioctl+0x93/0x4f0
> [ 599.581086] [<ffffffff8111b28a>] sys_ioctl+0x4a/0x80
> [ 599.581088] [<ffffffff81621ba2>] system_call_fastpath+0x16/0x1b
> [ 599.581094] INFO: task ceph-osd:3330 blocked for more than 120 seconds.
> [ 599.581094] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 599.581095] ceph-osd D 0000000000000005 0 3330 1
> 0x00000000
> [ 599.581096] ffff880bc3bf9c38 0000000000000086 ffff880bc3bd4740
> 0000000000012280
> [ 599.581098] ffff880bc3bf9fd8 ffff880bc3bf8010 0000000000012280
> 0000000000012280
> [ 599.581099] ffff880bc3bf9fd8 0000000000012280 ffff880e46d36600
> ffff880bc3bd4740
> [ 599.581099] Call Trace:
> [ 599.581101] [<ffffffff81620334>] schedule+0x24/0x70
> [ 599.581106] [<ffffffffa009dd65>]
> btrfs_commit_transaction_async+0x1d5/0x240 [btrfs]
> [ 599.581111] [<ffffffffa0081eb6>] ? block_rsv_add_bytes+0x26/0x60 [btrfs]
> [ 599.581113] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 599.581118] [<ffffffffa0081f25>] ? block_rsv_migrate_bytes+0x35/0x50
> [btrfs]
> [ 599.581123] [<ffffffffa00ced2e>] btrfs_mksubvol+0x2be/0x350 [btrfs]
> [ 599.581129] [<ffffffffa00ceec9>]
> btrfs_ioctl_snap_create_transid+0x109/0x1a0 [btrfs]
> [ 599.581134] [<ffffffffa00d0bc4>]
> btrfs_ioctl_snap_create_v2+0x84/0xf0 [btrfs]
> [ 599.581139] [<ffffffffa00d353f>] btrfs_ioctl+0x76f/0x12d0 [btrfs]
> [ 599.581141] [<ffffffff8114459a>] ? fsnotify+0x1ba/0x2e0
> [ 599.581142] [<ffffffff8111ade3>] do_vfs_ioctl+0x93/0x4f0
> [ 599.581143] [<ffffffff8111b28a>] sys_ioctl+0x4a/0x80
> [ 599.581145] [<ffffffff81621ba2>] system_call_fastpath+0x16/0x1b
> [ 719.395814] INFO: task kworker/6:0:29 blocked for more than 120 seconds.
> [ 719.417426] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 719.439537] kworker/6:0 D ffffffff8180ebc0 0 29 2
> 0x00000000
> [ 719.461937] ffff880e78f4dc90 0000000000000046 ffff880e78f4a180
> 0000000000012280
> [ 719.484547] ffff880e78f4dfd8 ffff880e78f4c010 0000000000012280
> 0000000000012280
> [ 719.507211] ffff880e78f4dfd8 0000000000012280 ffff880e78e8c340
> ffff880e78f4a180
> [ 719.530071] Call Trace:
> [ 719.552729] [<ffffffff81620334>] schedule+0x24/0x70
> [ 719.552741] [<ffffffffa009b4c5>] wait_for_commit+0x55/0x90 [btrfs]
> [ 719.552744] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 719.552752] [<ffffffffa009d095>]
> btrfs_commit_transaction+0x655/0xab0 [btrfs]
> [ 719.552755] [<ffffffff81076058>] ? idle_balance+0x108/0x130
> [ 719.552756] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 719.552762] [<ffffffffa009d7f0>] ? btrfs_end_transaction+0x20/0x20
> [btrfs]
> [ 719.552768] [<ffffffffa009d80a>] do_async_commit+0x1a/0x30 [btrfs]
> [ 719.552770] [<ffffffff81058eff>] process_one_work+0x11f/0x470
> [ 719.552771] [<ffffffff8105b128>] worker_thread+0x178/0x400
> [ 719.552772] [<ffffffff8105afb0>] ? manage_workers+0x210/0x210
> [ 719.552774] [<ffffffff8105fc46>] kthread+0x96/0xa0
> [ 719.552776] [<ffffffff81622dd4>] kernel_thread_helper+0x4/0x10
> [ 719.552777] [<ffffffff8105fbb0>] ? kthread_worker_fn+0x130/0x130
> [ 719.552779] [<ffffffff81622dd0>] ? gs_change+0xb/0xb
> [ 719.552781] INFO: task kworker/3:1:578 blocked for more than 120 seconds.
> [ 719.552781] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 719.552783] kworker/3:1 D ffffffff8180ebc0 0 578 2
> 0x00000000
> [ 719.552784] ffff880e45dd3c90 0000000000000046 ffff880e7890e080
> 0000000000012280
> [ 719.552786] ffff880e45dd3fd8 ffff880e45dd2010 0000000000012280
> 0000000000012280
> [ 719.552787] ffff880e45dd3fd8 0000000000012280 ffff880e78e7e280
> ffff880e7890e080
> [ 719.552787] Call Trace:
> [ 719.552789] [<ffffffff81620334>] schedule+0x24/0x70
> [ 719.552795] [<ffffffffa009b4c5>] wait_for_commit+0x55/0x90 [btrfs]
> [ 719.552797] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 719.552802] [<ffffffffa009d095>]
> btrfs_commit_transaction+0x655/0xab0 [btrfs]
> [ 719.552804] [<ffffffff81076058>] ? idle_balance+0x108/0x130
> [ 719.552805] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 719.552810] [<ffffffffa009d7f0>] ? btrfs_end_transaction+0x20/0x20
> [btrfs]
> [ 719.552816] [<ffffffffa009d80a>] do_async_commit+0x1a/0x30 [btrfs]
> [ 719.552817] [<ffffffff81058eff>] process_one_work+0x11f/0x470
> [ 719.552818] [<ffffffff8105b128>] worker_thread+0x178/0x400
> [ 719.552819] [<ffffffff8105afb0>] ? manage_workers+0x210/0x210
> [ 719.552820] [<ffffffff8105fc46>] kthread+0x96/0xa0
> [ 719.552822] [<ffffffff81622dd4>] kernel_thread_helper+0x4/0x10
> [ 719.552824] [<ffffffff8105fbb0>] ? kthread_worker_fn+0x130/0x130
> [ 719.552825] [<ffffffff81622dd0>] ? gs_change+0xb/0xb
> [ 719.552827] INFO: task kworker/2:1:1184 blocked for more than 120
> seconds.
> [ 719.552827] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 719.552828] kworker/2:1 D ffffffff8180ebc0 0 1184 2
> 0x00000000
> [ 719.552830] ffff880e448cfc90 0000000000000046 ffff880e46cce380
> 0000000000012280
> [ 719.552831] ffff880e448cffd8 ffff880e448ce010 0000000000012280
> 0000000000012280
> [ 719.552832] ffff880e448cffd8 0000000000012280 ffff880e78e5a240
> ffff880e46cce380
> [ 719.552832] Call Trace:
> [ 719.552834] [<ffffffff81620334>] schedule+0x24/0x70
> [ 719.552839] [<ffffffffa009b4c5>] wait_for_commit+0x55/0x90 [btrfs]
> [ 719.552841] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 719.552846] [<ffffffffa009d095>]
> btrfs_commit_transaction+0x655/0xab0 [btrfs]
> [ 719.552848] [<ffffffff81076058>] ? idle_balance+0x108/0x130
> [ 719.552849] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 719.552854] [<ffffffffa009d7f0>] ? btrfs_end_transaction+0x20/0x20
> [btrfs]
> [ 719.552859] [<ffffffffa009d80a>] do_async_commit+0x1a/0x30 [btrfs]
> [ 719.552861] [<ffffffff81058eff>] process_one_work+0x11f/0x470
> [ 719.552862] [<ffffffff8105b128>] worker_thread+0x178/0x400
> [ 719.552863] [<ffffffff8105afb0>] ? manage_workers+0x210/0x210
> [ 719.552864] [<ffffffff8105fc46>] kthread+0x96/0xa0
> [ 719.552866] [<ffffffff81622dd4>] kernel_thread_helper+0x4/0x10
> [ 719.552867] [<ffffffff8105fbb0>] ? kthread_worker_fn+0x130/0x130
> [ 719.552868] [<ffffffff81622dd0>] ? gs_change+0xb/0xb
> [ 719.552869] INFO: task kworker/5:1:1186 blocked for more than 120
> seconds.
> [ 719.552869] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> [ 719.552870] kworker/5:1 D ffffffff8180ebc0 0 1186 2
> 0x00000000
> [ 719.552872] ffff880e448a3c90 0000000000000046 ffff880e46d36600
> 0000000000012280
> [ 719.552873] ffff880e448a3fd8 ffff880e448a2010 0000000000012280
> 0000000000012280
> [ 719.552874] ffff880e448a3fd8 0000000000012280 ffff880e78e88300
> ffff880e46d36600
> [ 719.552874] Call Trace:
> [ 719.552876] [<ffffffff81620334>] schedule+0x24/0x70
> [ 719.552881] [<ffffffffa009b4c5>] wait_for_commit+0x55/0x90 [btrfs]
> [ 719.552883] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 719.552888] [<ffffffffa009d095>]
> btrfs_commit_transaction+0x655/0xab0 [btrfs]
> [ 719.552890] [<ffffffff81076058>] ? idle_balance+0x108/0x130
> [ 719.552891] [<ffffffff81060140>] ? wake_up_bit+0x40/0x40
> [ 719.552896] [<ffffffffa009d7f0>] ? btrfs_end_transaction+0x20/0x20
> [btrfs]
> [ 719.552901] [<ffffffffa009d80a>] do_async_commit+0x1a/0x30 [btrfs]
> [ 719.552902] [<ffffffff81058eff>] process_one_work+0x11f/0x470
> [ 719.552903] [<ffffffff8105b128>] worker_thread+0x178/0x400
> [ 719.552904] [<ffffffff8105afb0>] ? manage_workers+0x210/0x210
> [ 719.552906] [<ffffffff8105fc46>] kthread+0x96/0xa0
> [ 719.552907] [<ffffffff81622dd4>] kernel_thread_helper+0x4/0x10
> [ 719.552909] [<ffffffff8105fbb0>] ? kthread_worker_fn+0x130/0x130
> [ 719.552910] [<ffffffff81622dd0>] ? gs_change+0xb/0xb
>
This isn't showing the guy who's actually trying to commit the
transaction. Next time this happens can you do a sysrq+w and capture
the output and post it here so we can see what everybody is doing? Thanks,
Josef
next prev parent reply other threads:[~2012-06-25 13:08 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-23 8:50 btrfs deadlock in 3.5-rc3 Stefan Priebe
2012-06-23 13:46 ` Michael
2012-06-23 14:55 ` Stefan Priebe
2012-06-25 13:08 ` Josef Bacik [this message]
2012-06-25 14:08 ` Stefan Priebe - Profihost AG
2012-06-25 14:20 ` Josef Bacik
2012-06-25 14:45 ` Stefan Priebe - Profihost AG
2012-06-25 14:48 ` Josef Bacik
2012-06-25 17:38 ` Stefan Priebe
2012-06-25 18:02 ` Josef Bacik
2012-06-25 18:28 ` Stefan Priebe
2012-06-25 19:33 ` Stefan Priebe
2012-06-25 20:11 ` Josef Bacik
2012-06-25 20:20 ` Stefan Priebe
2012-06-25 20:23 ` Josef Bacik
2012-06-25 20:33 ` Stefan Priebe
2012-06-26 16:47 ` Stefan Priebe
2012-06-26 20:14 ` Josef Bacik
2012-06-26 20:19 ` Stefan Priebe
2012-06-26 20:48 ` Josef Bacik
2012-06-27 5:47 ` Stefan Priebe - Profihost AG
2012-06-27 13:30 ` Josef Bacik
2012-06-27 21:17 ` Josef Bacik
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