After the installation of the mainline kernel on the remaining machine, the problem hasn't appeared anymore for more than one month, then unfortunately I couldn't test this anymore, because of other unrelated hardware problems. I plan to start again in the next days, still I think the problem is solved with the mainline kernel. So, what can we do now? Will the new release kernel be free of this bug?
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1449910 Title: System hangs apparently randomly when disconnecting iScsi volumes Status in linux package in Ubuntu: Triaged Bug description: We have several servers here which mount Ubuntu LTS Trusty Tahr 14.04. We use LVM snapshots to do backups during the night. Randomly (witha rate of 1 event every 10-12 days) the LVM snapshot creation runs in some problem. The server hangs and it must be rebooted hardly. No shell, no even any screen output, just a black screen, no ping, nothing. And Magic SysRq key doesn't help. No logs are written either (I also tried redirect logs to another machine, just in case). This happens with different hardware, and different backup software. The only constant is LVM snapshots. Kernel is 3.13.0-49. We tried the 14.10 kernel (3.16.0-34), we had the same hangs, but this time we had something logged: Apr 21 23:02:56 server-name kernel: [654840.108023] INFO: task kswapd0:50 blocked for more than 120 seconds. Apr 21 23:02:56 server-name kernel: [654840.108145] Not tainted 3.16.0-34-generic #47~14.04.1-Ubuntu Apr 21 23:02:56 server-name kernel: [654840.108245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 21 23:02:56 server-name kernel: [654840.108361] kswapd0 D ffff88007fc130c0 0 50 2 0x00000000 Apr 21 23:02:56 server-name kernel: [654840.108367] ffff880077bcf998 0000000000000046 ffff880077bd0000 ffff880077bcffd8 Apr 21 23:02:56 server-name kernel: [654840.108372] 00000000000130c0 00000000000130c0 ffff88007bdef010 ffffc90010d3c000 Apr 21 23:02:56 server-name kernel: [654840.108377] ffffc90010d3c0d8 0000000000000000 0000000000000000 ffffc90010d3c000 Apr 21 23:02:56 server-name kernel: [654840.108382] Call Trace: /0x70 Apr 21 23:02:56 server-name kernel: [654840.108419] [<ffffffffc0707aad>] reiserfs_wait_on_write_block+0x4d/0x80 [reiserfs] Apr 21 23:02:56 server-name kernel: [654840.108426] [<ffffffff810b4d70>] ? prepare_to_wait_event+0x100/0x100 Apr 21 23:02:56 server-name kernel: [654840.108437] [<ffffffffc0709271>] do_journal_begin_r+0xe1/0x3e0 [reiserfs] Apr 21 23:02:56 server-name kernel: [654840.108443] [<ffffffff810a5fa8>] ? __enqueue_entity+0x78/0x80 Apr 21 23:02:56 server-name kernel: [654840.108454] [<ffffffffc070967a>] journal_begin+0x8a/0x160 [reiserfs] Apr 21 23:02:56 server-name kernel: [654840.108464] [<ffffffffc06f67fc>] reiserfs_release_dquot+0x4c/0xd0 [reiserfs] Apr 21 23:02:56 server-name kernel: [654840.108470] [<ffffffff813ab4f1>] ? __percpu_counter_add+0x51/0x70 Apr 21 23:02:56 server-name kernel: [654840.108476] [<ffffffff8123003d>] dqput+0x9d/0x200 Apr 21 23:02:56 server-name kernel: [654840.108480] [<ffffffff8123166d>] __dquot_drop+0x5d/0x70 Apr 21 23:02:56 server-name kernel: [654840.108485] [<ffffffff812316ad>] dquot_drop+0x2d/0x40 Apr 21 23:02:56 server-name kernel: [654840.108494] [<ffffffffc06ec7a0>] reiserfs_evic t_inode+0xa0/0x180 [reiserfs] Apr 21 23:02:56 server-name kernel: [654840.108501] [<ffffffff811ff7de>] ? inode_wait_for_writeback+0x2e/0x40 Apr 21 23:02:56 server-name kernel: [654840.108507] [<ffffffff811eef34>] evict+0xb4/0x180 Apr 21 23:02:56 server-name kernel: [654840.108511] [<ffffffff811ef039>] dispose_list+0x39/0x50 Apr 21 23:02:56 server-name kernel: [654840.108515] [<ffffffff811eff47>] prune_icache_sb+0x47/0x60 Apr 21 23:02:56 server-name kernel: [654840.108520] [<ffffffff811d78f5>] super_cache_scan+0x105/0x170 Apr 21 23:02:56 server-name kernel: [654840.108526] [<ffffffff81171b78>] shrink_slab_node+0x138/0x290 Apr 21 23:02:56 server-name kernel: [654840.108532] [<ffffffff810f8ccb>] ? css_next_descendant_pre+0x3b/0x40 Apr 21 23:02:56 server-name kernel: [654840.108536] [<ffffffff8117367b>] shrink_slab+0x8b/0x160 Apr 21 23:02:56 server-name kernel: [654840.108540] [<ffffffff811770e2>] balance_pgdat+0x3f2/0x620 Apr 21 23:02:56 server-name kernel: [654840.108544] [<ffffffff8117746b>] kswapd+0x15b/0x3f0 Apr 21 23:02:56 server-name kernel: [654840.108549] [<ffffffff810b4d70>] ? prepare_to_wait_event+0x100/0x100 Apr 21 23:02:56 server-name kernel: [654840.108552] [<ffffffff81177310>] ? balance_pgdat+0x620/0x620 Apr 21 23:02:56 server-name kernel: [654840.108558] [<ffffffff81091332>] kthread+0xd2/0xf0 Apr 21 23:02:56 server-name kernel: [654840.108562] [<ffffffff81091260>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 21 23:02:56 server-name kernel: [654840.108567] [<ffffffff8176c9bc>] ret_from_fork+0x7c/0xb0 Apr 21 23:02:56 server-name kernel: [654840.108571] [<ffffffff81091260>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 21 23:02:56 server-name kernel: [654840.108595] INFO: task kworker/1:1:25606 blocked for more than 120 seconds. Apr 21 23:02:56 server-name kernel: [654840.108709] Not tainted 3.16.0-34-generic #47~14.04.1-Ubuntu Apr 21 23:02:56 server-name kernel: [654840.108809] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 21 23:02:56 server-name kernel: [654840.108923] kworker/1:1 D ffff88007fc530c0 0 25606 2 0x00000000 Apr 21 23:02:56 server-name kernel: [654840.108936] Workqueue: events_long flush_old_commits [reiserfs] Apr 21 23:02:56 server-name kernel: [654840.108939] ffff88000311fc90 0000000000000046 ffff880079db65e0 ffff88000311ffd8 Apr 21 23:02:56 server-name kernel: [654840.108943] 00000000000130c0 00000000000130c0 ffff880036b065e0 ffffc90010d3c000 Apr 21 23:02:56 server-name kernel: [654840.108948] ffffc90010d3c0d8 0000000000000000 0000000000000000 ffffc90010d3c000 Apr 21 23:02:56 server-name kernel: [654840.108952] Call Trace: Apr 21 23:02:56 server-name kernel: [654840.108956] [<ffffffff817689d9>] schedule+0x29/0x70 Apr 21 23:02:56 server-name kernel: [654840.108967] [<ffffffffc0707aad>] reiserfs_wait_on_write_block+0x4d/0x80 [reiserfs] Apr 21 23:02:56 server-name kernel: [654840.108972] [<ffffffff810b4d70>] ? prepare_to_wait_event+0x100/0x100 Apr 21 23:02:56 server-name kernel: [654840.108983] [<ffffffffc0709271>] do_journal_begin_r+0xe1/0x3e0 [reiserfs] Apr 21 23:02:56 server-name kernel: [654840.108989] [<ffffffff8101c355>] ? native_sched_clock+0x35/0x90 Apr 21 23:02:56 server-name kernel: [654840.109000] [<ffffffffc070967a>] journal_begin+0x8a/0x160 [reiserfs] Apr 21 23:02:56 server-name kernel: [654840.109010] [<ffffffffc06f5a44>] reiserfs_sync_fs+0x34/0x70 [reiserfs] Apr 21 23:02:56 server-name kernel: [654840.109019] [<ffffffffc06f5aca>] flush_old_commits+0x4a/0x60 [reiserfs] Apr 21 23:02:56 server-name kernel: [654840.109024] [<ffffffff8108a322>] process_one_work+0x182/0x450 Apr 21 23:02:56 server-name kernel: [654840.109028] [<ffffffff8108aa91>] worker_thread+0x121/0x570 Apr 21 23:02:56 server-name kernel: [654840.109032] [<ffffffff8108a970>] ? rescuer_thread+0x380/0x380 Apr 21 23:02:56 server-name kernel: [654840.109036] [<ffffffff81091332>] kthread+0xd2/0xf0 Apr 21 23:02:56 server-name kernel: [654840.109040] [<ffffffff81091260>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 21 23:02:56 server-name kernel: [654840.109044] [<ffffffff8176c9bc>] ret_from_fork+0x7c/0xb0 Apr 21 23:02:56 server-name kernel: [654840.109048] [<ffffffff81091260>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 21 23:02:56 server-name kernel: [654840.109053] INFO: task lvcreate:25648 blocked for more than 120 seconds. Apr 21 23:02:56 server-name kernel: [654840.109159] Not tainted 3.16.0-34-generic #47~14.04.1-Ubuntu Apr 21 23:02:56 server-name kernel: [654840.109258] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 21 23:02:56 server-name kernel: [654840.109372] lvcreate D ffff88007fc530c0 0 25648 25623 0x00000000 Apr 21 23:02:56 server-name kernel: [654840.109377] ffff880000053b60 0000000000000086 ffff8800773432f0 ffff880000053fd8 Apr 21 23:02:56 server-name kernel: [654840.109381] 00000000000130c0 00000000000130c0 ffff88007c0c9460 ffff8800773432f0 Apr 21 23:02:56 server-name kernel: [654840.109385] ffff880037a23080 ffff880037a23068 ffffffff00000000 ffff880037a23070 Apr 21 23:02:56 server-name kernel: [654840.109390] Call Trace: Apr 21 23:02:56 server-name kernel: [654840.109394] [<ffffffff817689d9>] schedule+0x29/0x70 Apr 21 23:02:56 server-name kernel: [654840.109398] [<ffffffff8176b77d>] rwsem_down_write_failed+0x1ed/0x390 Apr 21 23:02:56 server-name kernel: [654840.109404] [<ffffffff81011627>] ? __switch_to+0x167/0x590 Apr 21 23:02:56 server-name kernel: [654840.109409] [<ffffffff81394013>] call_rwsem_down_write_failed+0x13/0x20 Apr 21 23:02:56 server-name kernel: [654840.109416] [<ffffffff815e6c05>] ? dm_free_md_mempools+0x35/0x40 Apr 21 23:02:56 server-name kernel: [654840.109419] [<ffffffff8176b0ad>] ? down_write+0x2d/0x40 Apr 21 23:02:56 server-name kernel: [654840.109423] [<ffffffff811d6a6d>] thaw_super+0x1d/0xb0 Apr 21 23:02:56 server-name kernel: [654840.109428] [<ffffffff81209935>] thaw_bdev+0x65/0x80 Apr 21 23:02:56 server-name kernel: [654840.109432] [<ffffffff815e4a80>] unlock_fs.part.23+0x20/0x40 Apr 21 23:02:56 server-name kernel: [654840.109436] [<ffffffff815e6898>] dm_resume+0xb8/0xd0 Apr 21 23:02:56 server-name kernel: [654840.109441] [<ffffffff815eba5b>] dev_suspend+0x12b/0x220 Apr 21 23:02:56 server-name kernel: [654840.109445] [<ffffffff815eb930>] ? table_load+0x350/0x350 Apr 21 23:02:56 server-name kernel: [654840.109449] [<ffffffff815ec2f5>] ctl_ioctl+0x255/0x500 Apr 21 23:02:56 server-name kernel: [654840.109454] [<ffffffff812d75ef>] ? SYSC_semtimedop+0x23f/0xcf0 Apr 21 23:02:56 server-name kernel: [654840.109459] [<ffffffff815ec5b3>] dm_ctl_ioctl+0x13/0x20 Apr 21 23:02:56 server-name kernel: [654840.109463] [<ffffffff811e7090>] do_vfs_ioctl+0x2e0/0x4c0 Apr 21 23:02:56 server-name kernel: [654840.109468] [<ffffffff812ebff6>] ? security_sem_associate+0x16/0x20 Apr 21 23:02:56 server-name kernel: [654840.109472] [<ffffffff812d65a9>] ? sem_security+0x9/0x10 Apr 21 23:02:56 server-name kernel: [654840.109476] [<ffffffff812d4a09>] ? ipcget+0x149/0x1c0 Apr 21 23:02:56 server-name kernel: [654840.109480] [<ffffffff811e72f1>] SyS_ioctl+0x81/0xa0 Apr 21 23:02:56 server-name kernel: [654840.109484] [<ffffffff8176ca6d>] system_call_fastpath+0x1a/0x1f Apr 21 23:04:56 server-name kernel: [654960.108025] INFO: task kswapd0:50 blocked for more than 120 seconds. Apr 21 23:04:56 server-name kernel: [654960.108124] Not tainted 3.16.0-34-generic #47~14.04.1-Ubuntu Apr 21 23:04:56 server-name kernel: [654960.108224] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 21 23:04:56 server-name kernel: [654960.108339] kswapd0 D ffff88007fc130c0 0 50 2 0x00000000 Apr 21 23:04:56 server-name kernel: [654960.108346] ffff880077bcf998 0000000000000046 ffff880077bd0000 ffff880077bcffd8 Apr 21 23:04:56 server-name kernel: [654960.108351] 00000000000130c0 00000000000130c0 ffff88007bdef010 ffffc90010d3c000 Apr 21 23:04:56 server-name kernel: [654960.108355] ffffc90010d3c0d8 0000000000000000 0000000000000000 ffffc90010d3c000 Apr 21 23:04:56 server-name kernel: [654960.108360] Call Trace: Apr 21 23:04:56 server-name kernel: [654960.108372] [<ffffffff817689d9>] schedule+0x29/0x70 Apr 21 23:04:56 server-name kernel: [654960.108397] [<ffffffffc0707aad>] reiserfs_wait_on_write_block+0x4d/0x80 [reiserfs] Apr 21 23:04:56 server-name kernel: [654960.108404] [<ffffffff810b4d70>] ? prepare_to_wait_event+0x100/0x100 Apr 21 23:04:56 server-name kernel: [654960.108416] [<ffffffffc0709271>] do_journal_begin_r+0xe1/0x3e0 [reiserfs] Apr 21 23:04:56 server-name kernel: [654960.108422] [<ffffffff810a5fa8>] ? __enqueue_entity+0x78/0x80 Apr 21 23:04:56 server-name kernel: [654960.108433] [<ffffffffc070967a>] journal_begin+0x8a/0x160 [reiserfs] Apr 21 23:04:56 server-name kernel: [654960.108443] [<ffffffffc06f67fc>] reiserfs_release_dquot+0x4c/0xd0 [reiserfs] Apr 21 23:04:56 server-name kernel: [654960.108449] [<ffffffff813ab4f1>] ? __percpu_counter_add+0x51/0x70 Apr 21 23:04:56 server-name kernel: [654960.108455] [<ffffffff8123003d>] dqput+0x9d/0x200 Apr 21 23:04:56 server-name kernel: [654960.108459] [<ffffffff8123166d>] __dquot_drop+0x5d/0x70 Apr 21 23:04:56 server-name kernel: [654960.108464] [<ffffffff812316ad>] dquot_drop+0x2d/0x40 Apr 21 23:04:56 server-name kernel: [654960.108473] [<ffffffffc06ec7a0>] reiserfs_evict_inode+0xa0/0x180 [reiserfs] Apr 21 23:04:56 server-name kernel: [654960.108480] [<ffffffff811ff7de>] ? inode_wait_for_writeback+0x2e/0x40 Apr 21 23:04:56 server-name kernel: [654960.108485] [<ffffffff811eef34>] evict+0xb4/0x180 Apr 21 23:04:56 server-name kernel: [654960.108490] [<ffffffff811ef039>] dispose_list+0x39/0x50 Apr 21 23:04:56 server-name kernel: [654960.108494] [<ffffffff811eff47>] prune_icache_sb+0x47/0x60 Apr 21 23:04:56 server-name kernel: [654960.108499] [<ffffffff811d78f5>] super_cache_scan+0x105/0x170 Apr 21 23:04:56 server-name kernel: [654960.108504] [<ffffffff81171b78>] shrink_slab_node+0x138/0x290 Apr 21 23:04:56 server-name kernel: [654960.108510] [<ffffffff810f8ccb>] ? css_next_descendant_pre+0x3b/0x40 Apr 21 23:04:56 server-name kernel: [654960.108515] [<ffffffff8117367b>] shrink_slab+0x8b/0x160 Apr 21 23:04:56 server-name kernel: [654960.108519] [<ffffffff811770e2>] balance_pgdat+0x3f2/0x620 Apr 21 23:04:56 server-name kernel: [654960.108523] [<ffffffff8117746b>] kswapd+0x15b/0x3f0 Apr 21 23:04:56 server-name kernel: [654960.108528] [<ffffffff810b4d70>] ? prepare_to_wait_event+0x100/0x100 Apr 21 23:04:56 server-name kernel: [654960.108531] [<ffffffff81177310>] ? balance_pgdat+0x620/0x620 Apr 21 23:04:56 server-name kernel: [654960.108536] [<ffffffff81091332>] kthread+0xd2/0xf0 Apr 21 23:04:56 server-name kernel: [654960.108541] [<ffffffff81091260>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 21 23:04:56 server-name kernel: [654960.108546] [<ffffffff8176c9bc>] ret_from_fork+0x7c/0xb0 Apr 21 23:04:56 server-name kernel: [654960.108550] [<ffffffff81091260>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 21 23:04:56 server-name kernel: [654960.108573] INFO: task kworker/1:1:25606 blocked for more than 120 seconds. Apr 21 23:04:56 server-name kernel: [654960.108688] Not tainted 3.16.0-34-generic #47~14.04.1-Ubuntu Apr 21 23:04:56 server-name kernel: [654960.108788] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 21 23:04:56 server-name kernel: [654960.108905] kworker/1:1 D ffff88007fc530c0 0 25606 2 0x00000000 Apr 21 23:04:56 server-name kernel: [654960.108918] Workqueue: events_long flush_old_commits [reiserfs] Apr 21 23:04:56 server-name kernel: [654960.108920] ffff88000311fc90 0000000000000046 ffff880079db65e0 ffff88000311ffd8 Apr 21 23:04:56 server-name kernel: [654960.108925] 00000000000130c0 00000000000130c0 ffff880036b065e0 ffffc90010d3c000 Apr 21 23:04:56 server-name kernel: [654960.108929] ffffc90010d3c0d8 0000000000000000 0000000000000000 ffffc90010d3c000 Apr 21 23:04:56 server-name kernel: [654960.108934] Call Trace: Apr 21 23:04:56 server-name kernel: [654960.108938] [<ffffffff817689d9>] schedule+0x29/0x70 Apr 21 23:04:56 server-name kernel: [654960.108949] [<ffffffffc0707aad>] reiserfs_wait_on_write_block+0x4d/0x80 [reiserfs] Apr 21 23:04:56 server-name kernel: [654960.108953] [<ffffffff810b4d70>] ? prepare_to_wait_event+0x100/0x100 Apr 21 23:04:56 server-name kernel: [654960.108964] [<ffffffffc0709271>] do_journal_begin_r+0xe1/0x3e0 [reiserfs] Apr 21 23:04:56 server-name kernel: [654960.108971] [<ffffffff8101c355>] ? native_sched_clock+0x35/0x90 Apr 21 23:04:56 server-name kernel: [654960.108982] [<ffffffffc070967a>] journal_begin+0x8a/0x160 [reiserfs] Apr 21 23:04:56 server-name kernel: [654960.108991] [<ffffffffc06f5a44>] reiserfs_sync_fs+0x34/0x70 [reiserfs] Apr 21 23:04:56 server-name kernel: [654960.109001] [<ffffffffc06f5aca>] flush_old_commits+0x4a/0x60 [reiserfs] Apr 21 23:04:56 server-name kernel: [654960.109006] [<ffffffff8108a322>] process_one_work+0x182/0x450 Apr 21 23:04:56 server-name kernel: [654960.109010] [<ffffffff8108aa91>] worker_thread+0x121/0x570 Apr 21 23:04:56 server-name kernel: [654960.109014] [<ffffffff8108a970>] ? rescuer_thread+0x380/0x380 Apr 21 23:04:56 server-name kernel: [654960.109018] [<ffffffff81091332>] kthread+0xd2/0xf0 Apr 21 23:04:56 server-name kernel: [654960.109022] [<ffffffff81091260>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 21 23:04:56 server-name kernel: [654960.109026] [<ffffffff8176c9bc>] ret_from_fork+0x7c/0xb0 Apr 21 23:04:56 server-name kernel: [654960.109030] [<ffffffff81091260>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 21 23:04:56 server-name kernel: [654960.109035] INFO: task lvcreate:25648 blocked for more than 120 seconds. Apr 21 23:04:56 server-name kernel: [654960.109141] Not tainted 3.16.0-34-generic #47~14.04.1-Ubuntu Apr 21 23:04:56 server-name kernel: [654960.109240] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 21 23:04:56 server-name kernel: [654960.109354] lvcreate D ffff88007fc530c0 0 25648 25623 0x00000000 Apr 21 23:04:56 server-name kernel: [654960.109359] ffff880000053b60 0000000000000086 ffff8800773432f0 ffff880000053fd8 Apr 21 23:04:56 server-name kernel: [654960.109363] 00000000000130c0 00000000000130c0 ffff88007c0c9460 ffff8800773432f0 Apr 21 23:04:56 server-name kernel: [654960.109367] ffff880037a23080 ffff880037a23068 ffffffff00000000 ffff880037a23070 Apr 21 23:04:56 server-name kernel: [654960.109372] Call Trace: Apr 21 23:04:56 server-name kernel: [654960.109376] [<ffffffff817689d9>] schedule+0x29/0x70 Apr 21 23:04:56 server-name kernel: [654960.109380] [<ffffffff8176b77d>] rwsem_down_write_failed+0x1ed/0x390 Apr 21 23:04:56 server-name kernel: [654960.109386] [<ffffffff81011627>] ? __switch_to+0x167/0x590 Apr 21 23:04:56 server-name kernel: [654960.109391] [<ffffffff81394013>] call_rwsem_down_write_failed+0x13/0x20 Apr 21 23:04:56 server-name kernel: [654960.109398] [<ffffffff815e6c05>] ? dm_free_md_mempools+0x35/0x40 Apr 21 23:04:56 server-name kernel: [654960.109401] [<ffffffff8176b0ad>] ? down_write+0x2d/0x40 Apr 21 23:04:56 server-name kernel: [654960.109405] [<ffffffff811d6a6d>] thaw_super+0x1d/0xb0 Apr 21 23:04:56 server-name kernel: [654960.109410] [<ffffffff81209935>] thaw_bdev+0x65/0x80 Apr 21 23:04:56 server-name kernel: [654960.109414] [<ffffffff815e4a80>] unlock_fs.part.23+0x20/0x40 Apr 21 23:04:56 server-name kernel: [654960.109419] [<ffffffff815e6898>] dm_resume+0xb8/0xd0 Apr 21 23:04:56 server-name kernel: [654960.109424] [<ffffffff815eba5b>] dev_suspend+0x12b/0x220 Apr 21 23:04:56 server-name kernel: [654960.109428] [<ffffffff815eb930>] ? table_load+0x350/0x350 Apr 21 23:04:56 server-name kernel: [654960.109431] [<ffffffff815ec2f5>] ctl_ioctl+0x255/0x500 Apr 21 23:04:56 server-name kernel: [654960.109437] [<ffffffff812d75ef>] ? SYSC_semtimedop+0x23f/0xcf0 Apr 21 23:04:56 server-name kernel: [654960.109441] [<ffffffff815ec5b3>] dm_ctl_ioctl+0x13/0x20 Apr 21 23:04:56 server-name kernel: [654960.109446] [<ffffffff811e7090>] do_vfs_ioctl+0x2e0/0x4c0 Apr 21 23:04:56 server-name kernel: [654960.109451] [<ffffffff812ebff6>] ? security_sem_associate+0x16/0x20 Apr 21 23:04:56 server-name kernel: [654960.109455] [<ffffffff812d65a9>] ? sem_security+0x9/0x10 Apr 21 23:04:56 server-name kernel: [654960.109459] [<ffffffff812d4a09>] ? ipcget+0x149/0x1c0 Apr 21 23:04:56 server-name kernel: [654960.109462] [<ffffffff811e72f1>] SyS_ioctl+0x81/0xa0 Apr 21 23:04:56 server-name kernel: [654960.109467] [<ffffffff8176ca6d>] system_call_fastpath+0x1a/0x1f Apr 21 23:06:10 server-name nmbd[962]: [2015/04/21 23:06:10.798735, 0] ../source3/nmbd/nmbd_packets.c:759(queue_query_name) Apr 21 23:06:10 server-name nmbd[962]: queue_query_name: interface 0 has NULL IP address ! Apr 21 23:06:56 server-name kernel: [655080.108025] INFO: task kswapd0:50 blocked for more than 120 seconds. Apr 21 23:06:56 server-name kernel: [655080.108123] Not tainted 3.16.0-34-generic #47~14.04.1-Ubuntu Apr 21 23:06:56 server-name kernel: [655080.108223] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 21 23:06:56 server-name kernel: [655080.108347] kswapd0 D ffff88007fc130c0 0 50 2 0x00000000 Apr 21 23:06:56 server-name kernel: [655080.108354] ffff880077bcf998 0000000000000046 ffff880077bd0000 ffff880077bcffd8 Apr 21 23:06:56 server-name kernel: [655080.108359] 00000000000130c0 00000000000130c0 ffff88007bdef010 ffffc90010d3c000 Apr 21 23:06:56 server-name kernel: [655080.108363] ffffc90010d3c0d8 0000000000000000 0000000000000000 ffffc90010d3c000 Apr 21 23:06:56 server-name kernel: [655080.108369] Call Trace: Apr 21 23:06:56 server-name kernel: [655080.108379] [<ffffffff817689d9>] schedule+0x29/0x70 _on_write_block+0x4d/0x80 [reiserfs] Apr 21 23:06:56 server-name kernel: [655080.108413] [<ffffffff810b4d70>] ? prepare_to_wait_event+0x100/0x100 Apr 21 23:06:56 server-name kernel: [655080.108424] [<ffffffffc0709271>] do_journal_begin_r+0xe1/0x3e0 [reiserfs] Apr 21 23:06:56 server-name kernel: [655080.108430] [<ffffffff810a5fa8>] ? __enqueue_entity+0x78/0x80 Apr 21 23:06:56 server-name kernel: [655080.108441] [<ffffffffc070967a>] journal_begin+0x8a/0x160 [reiserfs] Apr 21 23:06:56 server-name kernel: [655080.108451] [<ffffffffc06f67fc>] reiserfs_release_dquot+0x4c/0xd0 [reiserfs] Apr 21 23:06:56 server-name kernel: [655080.108457] [<ffffffff813ab4f1>] ? __percpu_counter_add+0x51/0x70 Apr 21 23:06:56 server-name kernel: [655080.108463] [<ffffffff8123003d>] dqput+0x9d/0x200 Apr 21 23:06:56 server-name kernel: [655080.108467] [<ffffffff8123166d>] __dquot_drop+0x5d/0x70 Apr 21 23:06:56 server-name kernel: [655080.108472] [<ffffffff812316ad>] dquot_drop+0x2d/0x40 Apr 21 23:06:56 server-name kernel: [655080.108481] [<ffffffffc06ec7a0>] reiserfs_evict_inode+0xa0/0x180 [reiserfs] Apr 21 23:06:56 server-name kernel: [655080.108488] [<ffffffff811ff7de>] ? inode_wait_Apr 21 23:06:56 server-name kernel: [655080.108493] [<ffffffff811eef34>] evict+0xb4/0x180 Apr 21 23:06:56 server-name kernel: [655080.108498] [<ffffffff811ef039>] dispose_list+0x39/0x50 Apr 21 23:06:56 server-name kernel: [655080.108502] [<ffffffff811eff47>] prune_icache_sb+0x47/0x60 Apr 21 23:06:56 server-name kernel: [655080.108507] [<ffffffff811d78f5>] super_cache_scan+0x105/0x170 Apr 21 23:06:56 server-name kernel: [655080.108512] [<ffffffff81171b78>] shrink_slab_node+0x138/0x290 Apr 21 23:06:56 server-name kernel: [655080.108519] [<ffffffff810f8ccb>] ? css_next_descendant_pre+0x3b/0x40 Apr 21 23:06:56 server-name kernel: [655080.108523] [<ffffffff8117367b>] shrink_slab+0x8b/0x160 Apr 21 23:06:56 server-name kernel: [655080.108527] [<ffffffff811770e2>] balance_pgdat+0x3f2/0x620 Apr 21 23:06:56 server-name kernel: [655080.108531] [<ffffffff8117746b>] kswapd+0x15b/0x3f0 Apr 21 23:06:56 server-name kernel: [655080.108536] [<ffffffff810b4d70>] ? prepare_to_wait_event+0x100/0x100 Apr 21 23:06:56 server-name kernel: [655080.108539] [<ffffffff81177310>] ? balance_pgdat+0x620/0x620 Apr 21 23:06:56 server-name kernel: [655080.108545] [<ffffffff81091332>] kthread+0xd2/0xf0 Apr 21 23:06:56 server-name kernel: [655080.108549] [<ffffffff81091260>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 21 23:06:56 server-name kernel: [655080.108554] [<ffffffff8176c9bc>] ret_from_fork+0x7c/0xb0 Apr 21 23:06:56 server-name kernel: [655080.108558] [<ffffffff81091260>] ? kthread_create_on_node+0x1c0/0x1c0 Apr 21 23:06:56 server-name kernel: [655080.108582] INFO: task kworker/1:1:25606 blocked for more than 120 seconds. Apr 21 23:06:56 server-name kernel: [655080.108697] Not tainted 3.16.0-34-generic #47~14.04.1-Ubuntu Apr 21 23:06:56 server-name kernel: [655080.108796] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 21 23:06:56 server-name kernel: [655080.108910] kworker/1:1 D ffff88007fc530c0 0 25606 2 0x00000000 Apr 21 23:06:56 server-name kernel: [655080.108923] Workqueue: events_long flush_old_commits [reiserfs] Apr 21 23:06:56 server-name kernel: [655080.108925] ffff88000311fc90 0000000000000046 ffff880079db65e0 ffff88000311ffd8 and this keeps going for some minutes, then the next morning the server is hung. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1449910/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
