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[Bug 979498] Re: Critical: Natty kernel hangs in xlog_grant_log_space

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: "Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>
Date: Sun, 29 Dec 2013 19:11:45 -0000
Reply-to: Bug 979498 <979498@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Juerg Haefliger, the patch referenced in your Bug Description is
available in Precise+ as per http://kernel.ubuntu.com/git?p=ubuntu
/ubuntu-quantal.git;a=commit;h=17b38471c3c07a49f0bbc2ecc2e92050c164e226
. Could you please advise on when you upgraded your Natty servers to a
supported release if this issue is resolved?

** Changed in: linux (Ubuntu)
       Status: In Progress => Incomplete

** Changed in: linux (Ubuntu)
    Milestone: ubuntu-12.10 => None

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Title:
  Critical: Natty kernel hangs in xlog_grant_log_space

Status in The Linux Kernel:
  Confirmed
Status in “linux” package in Ubuntu:
  Incomplete
Status in “linux” source package in Lucid:
  In Progress
Status in “linux” source package in Oneiric:
  Invalid
Status in “linux” source package in Precise:
  In Progress
Status in “linux” source package in Quantal:
  In Progress

Bug description:
  We're seeing the following stack traces on different production
  machines that are running Natty 2.6.38-8-server.  The machines need to
  be rebooted to recover.
  http://oss.sgi.com/archives/xfs/2011-11/msg00401.html claims that this
  bug is fixed in 3.0. Can this patch be backported to a Natty kernel?
  Upgrading to Oneiric is not an option at the moment.

  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299177] INFO: task xfssyncd/dm-4:739 blocked for more than 120 seconds.
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299206] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299235] xfssyncd/dm-4   D 000000000000000e     0   739      2 0x00000000
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299241]  ffff880bdd211d00 0000000000000046 ffff880bdd211fd8 ffff880bdd210000
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299245]  0000000000013d00 ffff880bddd8df38 ffff880bdd211fd8 0000000000013d00
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299250]  ffff881745c496e0 ffff880bddd8db80 0000000000000282 ffff8817de4e2800
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299254] Call Trace:
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299297]  [<ffffffffa010b2d8>] xlog_grant_log_space+0x4a8/0x500 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299304]  [<ffffffff8105f6f0>] ? default_wake_function+0x0/0x20
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299328]  [<ffffffffa010d1ff>] xfs_log_reserve+0xff/0x140 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299352]  [<ffffffffa01191fc>] xfs_trans_reserve+0x9c/0x200 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299373]  [<ffffffffa00fd383>] xfs_fs_log_dummy+0x43/0x90 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299397]  [<ffffffffa01303c1>] xfs_sync_worker+0x81/0x90 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299421]  [<ffffffffa012f0f3>] xfssyncd+0x183/0x230 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299444]  [<ffffffffa012ef70>] ? xfssyncd+0x0/0x230 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299450]  [<ffffffff810871f6>] kthread+0x96/0xa0
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299456]  [<ffffffff8100cde4>] kernel_thread_helper+0x4/0x10
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299460]  [<ffffffff81087160>] ? kthread+0x0/0xa0
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299463]  [<ffffffff8100cde0>] ? kernel_thread_helper+0x0/0x10
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299562] INFO: task mysqld:16377 blocked for more than 120 seconds.
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299586] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299615] mysqld          D 000000000000000e     0 16377      1 0x00000000
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299619]  ffff88146e6ffaa8 0000000000000082 ffff88146e6fffd8 ffff88146e6fe000
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299623]  0000000000013d00 ffff8817375303b8 ffff88146e6fffd8 0000000000013d00
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299628]  ffff880bdf352dc0 ffff881737530000 0000000000000286 ffff8817de4e2800
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299632] Call Trace:
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299655]  [<ffffffffa010b2d8>] xlog_grant_log_space+0x4a8/0x500 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299659]  [<ffffffff8105f6f0>] ? default_wake_function+0x0/0x20
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299682]  [<ffffffffa010d1ff>] xfs_log_reserve+0xff/0x140 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299705]  [<ffffffffa01191fc>] xfs_trans_reserve+0x9c/0x200 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299729]  [<ffffffffa0119071>] ? xfs_trans_alloc+0xa1/0xb0 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299752]  [<ffffffffa011ef4f>] xfs_create+0x17f/0x660 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299776]  [<ffffffffa012c07a>] xfs_vn_mknod+0xaa/0x1c0 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299799]  [<ffffffffa012c1c0>] xfs_vn_create+0x10/0x20 [xfs]
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299804]  [<ffffffff811705c1>] vfs_create+0xb1/0x110
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299809]  [<ffffffff81173bd6>] do_last+0x346/0x410
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299812]  [<ffffffff81174032>] do_filp_open+0x392/0x7c0
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299816]  [<ffffffff81172d02>] ? user_path_at+0x62/0xa0
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299822]  [<ffffffff811810f7>] ? alloc_fd+0xf7/0x150
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299826]  [<ffffffff8116474a>] do_sys_open+0x6a/0x150
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299830]  [<ffffffff81164850>] sys_open+0x20/0x30
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299833]  [<ffffffff8100bfc2>] system_call_fastpath+0x16/0x1b
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299866] INFO: task cron:15652 blocked for more than 120 seconds.
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299889] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299918] cron            D 0000000000000013     0 15652   1053 0x00000000
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299922]  ffff88096bac7cb8 0000000000000082 ffff88096bac7fd8 ffff88096bac6000
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299926]  0000000000013d00 ffff880b6e555f38 ffff88096bac7fd8 0000000000013d00
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299930]  ffff880bdf3eadc0 ffff880b6e555b80 ffff88096bac7cf8 ffff8817ddaf75b8
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299935] Call Trace:
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299941]  [<ffffffff815d6537>] __mutex_lock_slowpath+0xf7/0x180
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299946]  [<ffffffff812797d0>] ? security_inode_exec_permission+0x30/0x40
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299950]  [<ffffffff815d5f23>] mutex_lock+0x23/0x50
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299954]  [<ffffffff811739a8>] do_last+0x118/0x410
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299957]  [<ffffffff81174032>] do_filp_open+0x392/0x7c0
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299962]  [<ffffffff8113135d>] ? handle_mm_fault+0x16d/0x250
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299967]  [<ffffffff811810f7>] ? alloc_fd+0xf7/0x150
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299971]  [<ffffffff8116474a>] do_sys_open+0x6a/0x150
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299974]  [<ffffffff81164850>] sys_open+0x20/0x30
  Apr 10 23:31:14 nv-aw2az1-database0001 kernel: [2693078.299977]  [<ffffffff8100bfc2>] system_call_fastpath+0x16/0x1b

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