Reproduced today with 3.14.0-031400-generic while updating a vm: [ 4800.756513] INFO: task kworker/0:2:3505 blocked for more than 120 seconds. [ 4800.756519] Not tainted 3.14.0-031400-generic #201403310035 [ 4800.756522] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4800.756526] kworker/0:2 D ffffffff818118e0 0 3505 2 0x00000000 [ 4800.756541] Workqueue: ipv6_addrconf addrconf_verify_work [ 4800.756545] ffff880119251d18 0000000000000002 ffff880119bb4800 ffff880119251fd8 [ 4800.756552] 00000000000144c0 00000000000144c0 ffffffff81c144a0 ffff8800df9818f0 [ 4800.756559] ffff880119251cf8 ffffffff81cd24a0 ffffffff81cd24a4 00000000ffffffff [ 4800.756567] Call Trace: [ 4800.756575] [<ffffffff81764f89>] schedule+0x29/0x70 [ 4800.756582] [<ffffffff817652ae>] schedule_preempt_disabled+0xe/0x10 [ 4800.756589] [<ffffffff817670e4>] __mutex_lock_slowpath+0x114/0x1b0 [ 4800.756597] [<ffffffff817671a3>] mutex_lock+0x23/0x37 [ 4800.756604] [<ffffffff816616f5>] rtnl_lock+0x15/0x20 [ 4800.756612] [<ffffffff816fc0ae>] addrconf_verify_work+0xe/0x20 [ 4800.756620] [<ffffffff81087e2f>] process_one_work+0x17f/0x4c0 [ 4800.756628] [<ffffffff8108908b>] worker_thread+0x11b/0x3d0 [ 4800.756635] [<ffffffff81088f70>] ? manage_workers.isra.21+0x190/0x190 [ 4800.756642] [<ffffffff8108fe89>] kthread+0xc9/0xe0 [ 4800.756650] [<ffffffff8108fdc0>] ? flush_kthread_worker+0xb0/0xb0 [ 4800.756657] [<ffffffff8177203c>] ret_from_fork+0x7c/0xb0 [ 4800.756664] [<ffffffff8108fdc0>] ? flush_kthread_worker+0xb0/0xb0
New stuff in addition to a similar dump for NetworkManager and the warning about removing the station from ath9k_htc. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1301558 Title: [ath9k_htc] 14.04 NetworkManager hangs after 'ath: phy0: Unable to remove station entry for...' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1301558/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
