Hi, I am running Openvswitch 2.0.0 on Ubuntu 12.04.2 LTS (GNU/Linux 3.5.0-23-generic x86_64).
When I try to rmmod openvswitch module I get a kernel crash that force me to do force shutdown of the machine. I am using vxlan ports on the switch. Here is the kernel crash: [863160.472283] INFO: task ovs_workq:18644 blocked for more than 120 seconds. [863160.483970] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [863160.487226] ovs_workq D ffffffff8180cbe0 0 18644 2 0x00000000 [863160.487237] ffff8803ee2abd60 0000000000000046 ffff8803ee2abd30 ffffffff81174114 [863160.487245] ffff8803ee2abfd8 ffff8803ee2abfd8 ffff8803ee2abfd8 00000000000139c0 [863160.487252] ffff88040950ae00 ffff8803ee171700 ffff8803ee2abd50 ffffffff81ca9820 [863160.487259] Call Trace: [863160.487300] [<ffffffff81174114>] ? kmem_cache_free+0x104/0x110 [863160.487332] [<ffffffff8169d8b9>] schedule+0x29/0x70 [863160.487365] [<ffffffff8169db7e>] schedule_preempt_disabled+0xe/0x10 [863160.487371] [<ffffffff8169c797>] __mutex_lock_slowpath+0xd7/0x150 [863160.487377] [<ffffffff8117403f>] ? kmem_cache_free+0x2f/0x110 [863160.487392] [<ffffffffa02c7fc0>] ? rcu_free_vs+0x20/0x20 [openvswitch] [863160.487398] [<ffffffff8169c3aa>] mutex_lock+0x2a/0x50 [863160.487426] [<ffffffff8157bd4d>] unregister_pernet_device+0x1d/0x60 [863160.487437] [<ffffffffa02c8019>] vxlan_del_work+0x59/0x70 [openvswitch] [863160.487448] [<ffffffffa02c8e60>] worker_thread+0xd0/0x1c0 [openvswitch] [863160.487485] [<ffffffff81078450>] ? add_wait_queue+0x60/0x60 [863160.487503] [<ffffffffa02c8d90>] ? __cancel_work_timer+0x1c0/0x1c0 [openvswitch] [863160.487510] [<ffffffff81077b73>] kthread+0x93/0xa0 [863160.487519] [<ffffffff816a8324>] kernel_thread_helper+0x4/0x10 [863160.487525] [<ffffffff81077ae0>] ? flush_kthread_worker+0xb0/0xb0 [863160.487531] [<ffffffff816a8320>] ? gs_change+0x13/0x13 - Liran _______________________________________________ discuss mailing list discuss@openvswitch.org http://openvswitch.org/mailman/listinfo/discuss
