| 2015-12-17 05:45:35 |
Dave Chiluk |
bug |
|
|
added bug |
| 2015-12-17 05:48:55 |
Dave Chiluk |
nominated for series |
|
Ubuntu Wily |
|
| 2015-12-17 05:49:10 |
Dave Chiluk |
bug task added |
|
linux-lts-wily (Ubuntu) |
|
| 2015-12-17 05:49:17 |
Dave Chiluk |
linux-lts-wily (Ubuntu): assignee |
|
Dave Chiluk (chiluk) |
|
| 2015-12-17 05:49:20 |
Dave Chiluk |
linux-lts-wily (Ubuntu): importance |
Undecided |
High |
|
| 2015-12-17 05:49:26 |
Dave Chiluk |
linux-lts-wily (Ubuntu): status |
New |
Confirmed |
|
| 2015-12-17 05:49:27 |
Dave Chiluk |
linux (Ubuntu): status |
Triaged |
Won't Fix |
|
| 2015-12-17 05:49:31 |
Dave Chiluk |
linux (Ubuntu): status |
Won't Fix |
In Progress |
|
| 2015-12-17 05:49:33 |
Dave Chiluk |
linux-lts-wily (Ubuntu): status |
Confirmed |
In Progress |
|
| 2016-01-07 20:42:47 |
Dave Chiluk |
description |
[Impact]
* An XFS Deadlock situation is possible on 4.2..4.4rc1^ and newer kernels.
* Hung tasks have stack traces similar to
[ 4559.110607] INFO: task kworker/1:0:17 blocked for more than 120 seconds.
[ 4559.143010] Not tainted 4.2.0-18-generic #22~14.04.1-Ubuntu
[ 4559.171972] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 4559.209753] kworker/1:0 D 0000000000000000 0 17 2 0x00000000
[ 4559.209791] Workqueue: xfs-cil/sdac1 xlog_cil_push_work [xfs]
[ 4559.209794] ffff88085be9fbb8 0000000000000046 ffff88085b746040 ffff88085be8a940
[ 4559.209795] 0000000000000000 ffff88085bea0000 ffff880107fddcc0 ffff88085be8a940
[ 4559.209797] ffff880859119c00 ffff880859119d00 ffff88085be9fbd8 ffffffff817b6a77
[ 4559.209798] Call Trace:
[ 4559.209806] [<ffffffff817b6a77>] schedule+0x37/0x80
[ 4559.209817] [<ffffffffc03c105b>] xlog_state_get_iclog_space+0xdb/0x2d0 [xfs]
[ 4559.209822] [<ffffffff810a06c0>] ? wake_up_q+0x80/0x80
[ 4559.209832] [<ffffffffc03c1501>] xlog_write+0x191/0x6a0 [xfs]
[ 4559.209835] [<ffffffff813b4478>] ? prandom_u32+0x18/0x20
[ 4559.209845] [<ffffffffc03c2e49>] xlog_cil_push+0x1f9/0x3b0 [xfs]
[ 4559.209854] [<ffffffffc03c3015>] xlog_cil_push_work+0x15/0x20 [xfs]
[ 4559.209857] [<ffffffff8108f4ce>] process_one_work+0x14e/0x3d0
[ 4559.209858] [<ffffffff8108fb7a>] worker_thread+0x11a/0x470
[ 4559.209860] [<ffffffff8108fa60>] ? rescuer_thread+0x310/0x310
[ 4559.209862] [<ffffffff81095112>] kthread+0xd2/0xf0
[ 4559.209863] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[ 4559.209865] [<ffffffff817ba71f>] ret_from_fork+0x3f/0x70
[ 4559.209866] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
or
[305651.804853] INFO: task kswapd0:194 blocked for more than 120 seconds.
[305651.836092] Not tainted 4.2.0-18-generic #22~14.04.1-Ubuntu
[305651.865655] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[305651.903596] kswapd0 D ffff88085fa96640 0 194 2 0x00000000
[305651.903614] ffff8810591ab858 0000000000000046 ffff88085c2c2940 ffff88105b19a940
[305651.903616] ffff880066c64548 ffff8810591ac000 ffff8808599cae18 0000000000000000
[305651.903618] ffff88105b19a940 ffff88085a2cb000 ffff8810591ab878 ffffffff817b6a77
[305651.903620] Call Trace:
[305651.903629] [<ffffffff817b6a77>] schedule+0x37/0x80
[305651.903655] [<ffffffffc0402f6c>] _xfs_log_force_lsn+0x15c/0x2d0 [xfs]
[305651.903662] [<ffffffff810a06c0>] ? wake_up_q+0x80/0x80
[305651.903675] [<ffffffffc040310e>] xfs_log_force_lsn+0x2e/0x80 [xfs]
[305651.903687] [<ffffffffc03f5ff9>] ? xfs_iunpin_wait+0x19/0x20 [xfs]
[305651.903698] [<ffffffffc03f2a3d>] __xfs_iunpin_wait+0x8d/0x120 [xfs]
[305651.903701] [<ffffffff810b7380>] ? autoremove_wake_function+0x40/0x40
[305651.903711] [<ffffffffc03f5ff9>] xfs_iunpin_wait+0x19/0x20 [xfs]
[305651.903721] [<ffffffffc03eb665>] xfs_reclaim_inode+0x125/0x330 [xfs]
[305651.903732] [<ffffffffc03ebab8>] xfs_reclaim_inodes_ag+0x248/0x360 [xfs]
[305651.903735] [<ffffffff8120511c>] ? destroy_inode+0x3c/0x60
[305651.903744] [<ffffffffc03ec573>] xfs_reclaim_inodes_nr+0x33/0x40 [xfs]
[305651.903755] [<ffffffffc03fa5e9>] xfs_fs_free_cached_objects+0x19/0x20 [xfs]
[305651.903758] [<ffffffff811ee2a1>] super_cache_scan+0x181/0x190
[305651.903761] [<ffffffff811870e6>] shrink_slab+0x206/0x380
[305651.903763] [<ffffffff8118b7a1>] shrink_zone+0x291/0x2b0
[305651.903764] [<ffffffff8118c710>] kswapd+0x500/0x9b0
[305651.903766] [<ffffffff8118c210>] ? mem_cgroup_shrink_node_zone+0x130/0x130
[305651.903768] [<ffffffff81095112>] kthread+0xd2/0xf0
[305651.903770] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[305651.903772] [<ffffffff817ba71f>] ret_from_fork+0x3f/0x70
[305651.903774] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[Test Case]
* Large numbers of IO tasks to large numbers of XFS fileystems while under memory pressure. Testcase may not be guaranteed.
[Regression Potential]
* Upstream commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a29ac474a47eb8cf212b45917683ae89d6fa13b
- This commit allocates rescuer threads for each of the XFS work queues.
* Possible additional memory usage from rescuer threads.
[Other Info]
* Anything else you think is useful to include
* Anticipate questions from users, SRU, +1 maintenance, security teams and the Technical Board
* and address these questions in advance |
[Impact]
* An XFS Deadlock situation is possible on kernels older than 4.4rc1^
* Hung tasks have stack traces similar to
[ 4559.110607] INFO: task kworker/1:0:17 blocked for more than 120 seconds.
[ 4559.143010] Not tainted 4.2.0-18-generic #22~14.04.1-Ubuntu
[ 4559.171972] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 4559.209753] kworker/1:0 D 0000000000000000 0 17 2 0x00000000
[ 4559.209791] Workqueue: xfs-cil/sdac1 xlog_cil_push_work [xfs]
[ 4559.209794] ffff88085be9fbb8 0000000000000046 ffff88085b746040 ffff88085be8a940
[ 4559.209795] 0000000000000000 ffff88085bea0000 ffff880107fddcc0 ffff88085be8a940
[ 4559.209797] ffff880859119c00 ffff880859119d00 ffff88085be9fbd8 ffffffff817b6a77
[ 4559.209798] Call Trace:
[ 4559.209806] [<ffffffff817b6a77>] schedule+0x37/0x80
[ 4559.209817] [<ffffffffc03c105b>] xlog_state_get_iclog_space+0xdb/0x2d0 [xfs]
[ 4559.209822] [<ffffffff810a06c0>] ? wake_up_q+0x80/0x80
[ 4559.209832] [<ffffffffc03c1501>] xlog_write+0x191/0x6a0 [xfs]
[ 4559.209835] [<ffffffff813b4478>] ? prandom_u32+0x18/0x20
[ 4559.209845] [<ffffffffc03c2e49>] xlog_cil_push+0x1f9/0x3b0 [xfs]
[ 4559.209854] [<ffffffffc03c3015>] xlog_cil_push_work+0x15/0x20 [xfs]
[ 4559.209857] [<ffffffff8108f4ce>] process_one_work+0x14e/0x3d0
[ 4559.209858] [<ffffffff8108fb7a>] worker_thread+0x11a/0x470
[ 4559.209860] [<ffffffff8108fa60>] ? rescuer_thread+0x310/0x310
[ 4559.209862] [<ffffffff81095112>] kthread+0xd2/0xf0
[ 4559.209863] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[ 4559.209865] [<ffffffff817ba71f>] ret_from_fork+0x3f/0x70
[ 4559.209866] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
or
[305651.804853] INFO: task kswapd0:194 blocked for more than 120 seconds.
[305651.836092] Not tainted 4.2.0-18-generic #22~14.04.1-Ubuntu
[305651.865655] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[305651.903596] kswapd0 D ffff88085fa96640 0 194 2 0x00000000
[305651.903614] ffff8810591ab858 0000000000000046 ffff88085c2c2940 ffff88105b19a940
[305651.903616] ffff880066c64548 ffff8810591ac000 ffff8808599cae18 0000000000000000
[305651.903618] ffff88105b19a940 ffff88085a2cb000 ffff8810591ab878 ffffffff817b6a77
[305651.903620] Call Trace:
[305651.903629] [<ffffffff817b6a77>] schedule+0x37/0x80
[305651.903655] [<ffffffffc0402f6c>] _xfs_log_force_lsn+0x15c/0x2d0 [xfs]
[305651.903662] [<ffffffff810a06c0>] ? wake_up_q+0x80/0x80
[305651.903675] [<ffffffffc040310e>] xfs_log_force_lsn+0x2e/0x80 [xfs]
[305651.903687] [<ffffffffc03f5ff9>] ? xfs_iunpin_wait+0x19/0x20 [xfs]
[305651.903698] [<ffffffffc03f2a3d>] __xfs_iunpin_wait+0x8d/0x120 [xfs]
[305651.903701] [<ffffffff810b7380>] ? autoremove_wake_function+0x40/0x40
[305651.903711] [<ffffffffc03f5ff9>] xfs_iunpin_wait+0x19/0x20 [xfs]
[305651.903721] [<ffffffffc03eb665>] xfs_reclaim_inode+0x125/0x330 [xfs]
[305651.903732] [<ffffffffc03ebab8>] xfs_reclaim_inodes_ag+0x248/0x360 [xfs]
[305651.903735] [<ffffffff8120511c>] ? destroy_inode+0x3c/0x60
[305651.903744] [<ffffffffc03ec573>] xfs_reclaim_inodes_nr+0x33/0x40 [xfs]
[305651.903755] [<ffffffffc03fa5e9>] xfs_fs_free_cached_objects+0x19/0x20 [xfs]
[305651.903758] [<ffffffff811ee2a1>] super_cache_scan+0x181/0x190
[305651.903761] [<ffffffff811870e6>] shrink_slab+0x206/0x380
[305651.903763] [<ffffffff8118b7a1>] shrink_zone+0x291/0x2b0
[305651.903764] [<ffffffff8118c710>] kswapd+0x500/0x9b0
[305651.903766] [<ffffffff8118c210>] ? mem_cgroup_shrink_node_zone+0x130/0x130
[305651.903768] [<ffffffff81095112>] kthread+0xd2/0xf0
[305651.903770] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[305651.903772] [<ffffffff817ba71f>] ret_from_fork+0x3f/0x70
[305651.903774] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[Test Case]
* Large numbers of IO tasks to large numbers of XFS fileystems while under memory pressure. Testcase may not be guaranteed.
[Regression Potential]
* Upstream commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a29ac474a47eb8cf212b45917683ae89d6fa13b
- This commit allocates rescuer threads for each of the XFS work queues.
* Possible additional memory usage from rescuer threads.
[Other Info]
* Anything else you think is useful to include
* Anticipate questions from users, SRU, +1 maintenance, security teams and the Technical Board
* and address these questions in advance |
|
| 2016-01-08 22:16:52 |
Dave Chiluk |
nominated for series |
|
Ubuntu Vivid |
|
| 2016-01-08 22:16:52 |
Dave Chiluk |
nominated for series |
|
Ubuntu Trusty |
|
| 2016-01-08 22:17:12 |
Dave Chiluk |
bug task added |
|
linux-lts-utopic (Ubuntu) |
|
| 2016-01-11 11:13:25 |
Luis Henriques |
bug task added |
|
linux (Ubuntu Trusty) |
|
| 2016-01-11 11:13:25 |
Luis Henriques |
bug task added |
|
linux-lts-utopic (Ubuntu Trusty) |
|
| 2016-01-11 11:13:25 |
Luis Henriques |
bug task added |
|
linux-lts-wily (Ubuntu Trusty) |
|
| 2016-01-11 11:13:29 |
Luis Henriques |
bug task added |
|
linux (Ubuntu Vivid) |
|
| 2016-01-11 11:13:29 |
Luis Henriques |
bug task added |
|
linux-lts-utopic (Ubuntu Vivid) |
|
| 2016-01-11 11:13:29 |
Luis Henriques |
bug task added |
|
linux-lts-wily (Ubuntu Vivid) |
|
| 2016-01-11 11:13:31 |
Luis Henriques |
bug task added |
|
linux (Ubuntu Wily) |
|
| 2016-01-11 11:13:31 |
Luis Henriques |
bug task added |
|
linux-lts-utopic (Ubuntu Wily) |
|
| 2016-01-11 11:13:31 |
Luis Henriques |
bug task added |
|
linux-lts-wily (Ubuntu Wily) |
|
| 2016-01-11 11:13:46 |
Luis Henriques |
linux-lts-utopic (Ubuntu Vivid): status |
New |
Invalid |
|
| 2016-01-11 11:13:57 |
Luis Henriques |
linux-lts-utopic (Ubuntu Wily): status |
New |
Invalid |
|
| 2016-01-11 11:14:08 |
Luis Henriques |
linux-lts-utopic (Ubuntu): status |
New |
Invalid |
|
| 2016-01-11 11:14:20 |
Luis Henriques |
linux-lts-wily (Ubuntu): status |
In Progress |
Invalid |
|
| 2016-01-11 11:14:33 |
Luis Henriques |
linux-lts-wily (Ubuntu Vivid): status |
New |
Invalid |
|
| 2016-01-11 11:14:44 |
Luis Henriques |
linux-lts-wily (Ubuntu Wily): status |
New |
Invalid |
|
| 2016-01-11 11:21:15 |
Luis Henriques |
linux (Ubuntu Vivid): status |
New |
Fix Committed |
|
| 2016-01-11 11:21:39 |
Luis Henriques |
bug task deleted |
linux-lts-wily (Ubuntu) |
|
|
| 2016-01-11 11:21:51 |
Luis Henriques |
bug task deleted |
linux-lts-wily (Ubuntu Trusty) |
|
|
| 2016-01-11 11:22:01 |
Luis Henriques |
bug task deleted |
linux-lts-wily (Ubuntu Wily) |
|
|
| 2016-01-11 11:22:10 |
Luis Henriques |
bug task deleted |
linux-lts-wily (Ubuntu Vivid) |
|
|
| 2016-01-11 11:23:47 |
Luis Henriques |
linux (Ubuntu Wily): status |
New |
Fix Committed |
|
| 2016-01-11 11:32:53 |
Luis Henriques |
linux (Ubuntu Trusty): status |
New |
Fix Committed |
|
| 2016-01-11 11:37:27 |
Luis Henriques |
linux-lts-utopic (Ubuntu Trusty): status |
New |
Fix Committed |
|
| 2016-01-11 15:42:37 |
Nobuto Murata |
bug |
|
|
added subscriber Nobuto Murata |
| 2016-01-13 23:23:54 |
Luis Henriques |
tags |
sts |
sts verification-needed-trusty verification-needed-utopic verification-needed-vivid verification-needed-wily |
|
| 2016-01-17 21:17:09 |
Dave Chiluk |
tags |
sts verification-needed-trusty verification-needed-utopic verification-needed-vivid verification-needed-wily |
sts verification-done-trusty verification-done-utopic verification-done-vivid verification-done-wily |
|
| 2016-01-17 21:23:42 |
Dave Chiluk |
description |
[Impact]
* An XFS Deadlock situation is possible on kernels older than 4.4rc1^
* Hung tasks have stack traces similar to
[ 4559.110607] INFO: task kworker/1:0:17 blocked for more than 120 seconds.
[ 4559.143010] Not tainted 4.2.0-18-generic #22~14.04.1-Ubuntu
[ 4559.171972] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 4559.209753] kworker/1:0 D 0000000000000000 0 17 2 0x00000000
[ 4559.209791] Workqueue: xfs-cil/sdac1 xlog_cil_push_work [xfs]
[ 4559.209794] ffff88085be9fbb8 0000000000000046 ffff88085b746040 ffff88085be8a940
[ 4559.209795] 0000000000000000 ffff88085bea0000 ffff880107fddcc0 ffff88085be8a940
[ 4559.209797] ffff880859119c00 ffff880859119d00 ffff88085be9fbd8 ffffffff817b6a77
[ 4559.209798] Call Trace:
[ 4559.209806] [<ffffffff817b6a77>] schedule+0x37/0x80
[ 4559.209817] [<ffffffffc03c105b>] xlog_state_get_iclog_space+0xdb/0x2d0 [xfs]
[ 4559.209822] [<ffffffff810a06c0>] ? wake_up_q+0x80/0x80
[ 4559.209832] [<ffffffffc03c1501>] xlog_write+0x191/0x6a0 [xfs]
[ 4559.209835] [<ffffffff813b4478>] ? prandom_u32+0x18/0x20
[ 4559.209845] [<ffffffffc03c2e49>] xlog_cil_push+0x1f9/0x3b0 [xfs]
[ 4559.209854] [<ffffffffc03c3015>] xlog_cil_push_work+0x15/0x20 [xfs]
[ 4559.209857] [<ffffffff8108f4ce>] process_one_work+0x14e/0x3d0
[ 4559.209858] [<ffffffff8108fb7a>] worker_thread+0x11a/0x470
[ 4559.209860] [<ffffffff8108fa60>] ? rescuer_thread+0x310/0x310
[ 4559.209862] [<ffffffff81095112>] kthread+0xd2/0xf0
[ 4559.209863] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[ 4559.209865] [<ffffffff817ba71f>] ret_from_fork+0x3f/0x70
[ 4559.209866] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
or
[305651.804853] INFO: task kswapd0:194 blocked for more than 120 seconds.
[305651.836092] Not tainted 4.2.0-18-generic #22~14.04.1-Ubuntu
[305651.865655] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[305651.903596] kswapd0 D ffff88085fa96640 0 194 2 0x00000000
[305651.903614] ffff8810591ab858 0000000000000046 ffff88085c2c2940 ffff88105b19a940
[305651.903616] ffff880066c64548 ffff8810591ac000 ffff8808599cae18 0000000000000000
[305651.903618] ffff88105b19a940 ffff88085a2cb000 ffff8810591ab878 ffffffff817b6a77
[305651.903620] Call Trace:
[305651.903629] [<ffffffff817b6a77>] schedule+0x37/0x80
[305651.903655] [<ffffffffc0402f6c>] _xfs_log_force_lsn+0x15c/0x2d0 [xfs]
[305651.903662] [<ffffffff810a06c0>] ? wake_up_q+0x80/0x80
[305651.903675] [<ffffffffc040310e>] xfs_log_force_lsn+0x2e/0x80 [xfs]
[305651.903687] [<ffffffffc03f5ff9>] ? xfs_iunpin_wait+0x19/0x20 [xfs]
[305651.903698] [<ffffffffc03f2a3d>] __xfs_iunpin_wait+0x8d/0x120 [xfs]
[305651.903701] [<ffffffff810b7380>] ? autoremove_wake_function+0x40/0x40
[305651.903711] [<ffffffffc03f5ff9>] xfs_iunpin_wait+0x19/0x20 [xfs]
[305651.903721] [<ffffffffc03eb665>] xfs_reclaim_inode+0x125/0x330 [xfs]
[305651.903732] [<ffffffffc03ebab8>] xfs_reclaim_inodes_ag+0x248/0x360 [xfs]
[305651.903735] [<ffffffff8120511c>] ? destroy_inode+0x3c/0x60
[305651.903744] [<ffffffffc03ec573>] xfs_reclaim_inodes_nr+0x33/0x40 [xfs]
[305651.903755] [<ffffffffc03fa5e9>] xfs_fs_free_cached_objects+0x19/0x20 [xfs]
[305651.903758] [<ffffffff811ee2a1>] super_cache_scan+0x181/0x190
[305651.903761] [<ffffffff811870e6>] shrink_slab+0x206/0x380
[305651.903763] [<ffffffff8118b7a1>] shrink_zone+0x291/0x2b0
[305651.903764] [<ffffffff8118c710>] kswapd+0x500/0x9b0
[305651.903766] [<ffffffff8118c210>] ? mem_cgroup_shrink_node_zone+0x130/0x130
[305651.903768] [<ffffffff81095112>] kthread+0xd2/0xf0
[305651.903770] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[305651.903772] [<ffffffff817ba71f>] ret_from_fork+0x3f/0x70
[305651.903774] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[Test Case]
* Large numbers of IO tasks to large numbers of XFS fileystems while under memory pressure. Testcase may not be guaranteed.
[Regression Potential]
* Upstream commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a29ac474a47eb8cf212b45917683ae89d6fa13b
- This commit allocates rescuer threads for each of the XFS work queues.
* Possible additional memory usage from rescuer threads.
[Other Info]
* Anything else you think is useful to include
* Anticipate questions from users, SRU, +1 maintenance, security teams and the Technical Board
* and address these questions in advance |
[Impact]
* An XFS Deadlock situation is possible on kernels older than 4.4rc1^
* Hung tasks have stack traces similar to
[ 4559.110607] INFO: task kworker/1:0:17 blocked for more than 120 seconds.
[ 4559.143010] Not tainted 4.2.0-18-generic #22~14.04.1-Ubuntu
[ 4559.171972] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 4559.209753] kworker/1:0 D 0000000000000000 0 17 2 0x00000000
[ 4559.209791] Workqueue: xfs-cil/sdac1 xlog_cil_push_work [xfs]
[ 4559.209794] ffff88085be9fbb8 0000000000000046 ffff88085b746040 ffff88085be8a940
[ 4559.209795] 0000000000000000 ffff88085bea0000 ffff880107fddcc0 ffff88085be8a940
[ 4559.209797] ffff880859119c00 ffff880859119d00 ffff88085be9fbd8 ffffffff817b6a77
[ 4559.209798] Call Trace:
[ 4559.209806] [<ffffffff817b6a77>] schedule+0x37/0x80
[ 4559.209817] [<ffffffffc03c105b>] xlog_state_get_iclog_space+0xdb/0x2d0 [xfs]
[ 4559.209822] [<ffffffff810a06c0>] ? wake_up_q+0x80/0x80
[ 4559.209832] [<ffffffffc03c1501>] xlog_write+0x191/0x6a0 [xfs]
[ 4559.209835] [<ffffffff813b4478>] ? prandom_u32+0x18/0x20
[ 4559.209845] [<ffffffffc03c2e49>] xlog_cil_push+0x1f9/0x3b0 [xfs]
[ 4559.209854] [<ffffffffc03c3015>] xlog_cil_push_work+0x15/0x20 [xfs]
[ 4559.209857] [<ffffffff8108f4ce>] process_one_work+0x14e/0x3d0
[ 4559.209858] [<ffffffff8108fb7a>] worker_thread+0x11a/0x470
[ 4559.209860] [<ffffffff8108fa60>] ? rescuer_thread+0x310/0x310
[ 4559.209862] [<ffffffff81095112>] kthread+0xd2/0xf0
[ 4559.209863] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[ 4559.209865] [<ffffffff817ba71f>] ret_from_fork+0x3f/0x70
[ 4559.209866] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
or
[305651.804853] INFO: task kswapd0:194 blocked for more than 120 seconds.
[305651.836092] Not tainted 4.2.0-18-generic #22~14.04.1-Ubuntu
[305651.865655] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[305651.903596] kswapd0 D ffff88085fa96640 0 194 2 0x00000000
[305651.903614] ffff8810591ab858 0000000000000046 ffff88085c2c2940 ffff88105b19a940
[305651.903616] ffff880066c64548 ffff8810591ac000 ffff8808599cae18 0000000000000000
[305651.903618] ffff88105b19a940 ffff88085a2cb000 ffff8810591ab878 ffffffff817b6a77
[305651.903620] Call Trace:
[305651.903629] [<ffffffff817b6a77>] schedule+0x37/0x80
[305651.903655] [<ffffffffc0402f6c>] _xfs_log_force_lsn+0x15c/0x2d0 [xfs]
[305651.903662] [<ffffffff810a06c0>] ? wake_up_q+0x80/0x80
[305651.903675] [<ffffffffc040310e>] xfs_log_force_lsn+0x2e/0x80 [xfs]
[305651.903687] [<ffffffffc03f5ff9>] ? xfs_iunpin_wait+0x19/0x20 [xfs]
[305651.903698] [<ffffffffc03f2a3d>] __xfs_iunpin_wait+0x8d/0x120 [xfs]
[305651.903701] [<ffffffff810b7380>] ? autoremove_wake_function+0x40/0x40
[305651.903711] [<ffffffffc03f5ff9>] xfs_iunpin_wait+0x19/0x20 [xfs]
[305651.903721] [<ffffffffc03eb665>] xfs_reclaim_inode+0x125/0x330 [xfs]
[305651.903732] [<ffffffffc03ebab8>] xfs_reclaim_inodes_ag+0x248/0x360 [xfs]
[305651.903735] [<ffffffff8120511c>] ? destroy_inode+0x3c/0x60
[305651.903744] [<ffffffffc03ec573>] xfs_reclaim_inodes_nr+0x33/0x40 [xfs]
[305651.903755] [<ffffffffc03fa5e9>] xfs_fs_free_cached_objects+0x19/0x20 [xfs]
[305651.903758] [<ffffffff811ee2a1>] super_cache_scan+0x181/0x190
[305651.903761] [<ffffffff811870e6>] shrink_slab+0x206/0x380
[305651.903763] [<ffffffff8118b7a1>] shrink_zone+0x291/0x2b0
[305651.903764] [<ffffffff8118c710>] kswapd+0x500/0x9b0
[305651.903766] [<ffffffff8118c210>] ? mem_cgroup_shrink_node_zone+0x130/0x130
[305651.903768] [<ffffffff81095112>] kthread+0xd2/0xf0
[305651.903770] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[305651.903772] [<ffffffff817ba71f>] ret_from_fork+0x3f/0x70
[305651.903774] [<ffffffff81095040>] ? kthread_create_on_node+0x1c0/0x1c0
[Test Case]
* Large numbers of IO tasks to large numbers of XFS fileystems while under memory pressure. Testcase may not be guaranteed.
[Regression Potential]
* Upstream commit
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a29ac474a47eb8cf212b45917683ae89d6fa13b
- This commit allocates rescuer threads for each of the XFS work queues.
* Possible additional memory usage from rescuer threads.
[Other Info] |
|
| 2016-02-02 10:29:52 |
Andy Whitcroft |
linux (Ubuntu Vivid): status |
Fix Committed |
Fix Released |
|
| 2016-02-02 11:49:14 |
Andy Whitcroft |
linux (Ubuntu Wily): status |
Fix Committed |
Fix Released |
|
| 2016-02-02 12:11:33 |
Andy Whitcroft |
linux (Ubuntu Trusty): status |
Fix Committed |
Fix Released |
|
| 2016-02-24 13:07:51 |
Launchpad Janitor |
branch linked |
|
lp:~ubuntu-branches/ubuntu/trusty/linux-lts-wily/trusty-proposed |
|
| 2017-06-28 19:27:53 |
Dave Chiluk |
linux (Ubuntu): status |
In Progress |
Fix Released |
|
| 2020-07-15 17:02:31 |
Guilherme G. Piccoli |
linux-lts-utopic (Ubuntu Trusty): status |
Fix Committed |
Fix Released |
|
| 2020-07-15 17:02:39 |
Guilherme G. Piccoli |
bug |
|
|
added subscriber Guilherme G. Piccoli |
