Closed
Description
This happens when I login the container, and can't quit by Ctrl-c.
My system is Ubuntu 12.04, kernel is 3.8.0-25-generic.
docker version:
root@wutq-docker:~# docker version
Client version: 0.10.0
Client API version: 1.10
Go version (client): go1.2.1
Git commit (client): dc9c28f
Server version: 0.10.0
Server API version: 1.10
Git commit (server): dc9c28f
Go version (server): go1.2.1
Last stable version: 0.10.0
I have used the script https://raw.githubusercontent.com/dotcloud/docker/master/contrib/check-config.sh to check, and all right.
I watch the syslog and found this message:
May 6 11:30:33 wutq-docker kernel: [62365.889369] unregister_netdevice: waiting for lo to become free. Usage count = 3
May 6 11:30:44 wutq-docker kernel: [62376.108277] unregister_netdevice: waiting for lo to become free. Usage count = 3
May 6 11:30:54 wutq-docker kernel: [62386.327156] unregister_netdevice: waiting for lo to become free. Usage count = 3
May 6 11:31:02 wutq-docker kernel: [62394.423920] INFO: task docker:1024 blocked for more than 120 seconds.
May 6 11:31:02 wutq-docker kernel: [62394.424175] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 6 11:31:02 wutq-docker kernel: [62394.424505] docker D 0000000000000001 0 1024 1 0x00000004
May 6 11:31:02 wutq-docker kernel: [62394.424511] ffff880077793cb0 0000000000000082 ffffffffffffff04 ffffffff816df509
May 6 11:31:02 wutq-docker kernel: [62394.424517] ffff880077793fd8 ffff880077793fd8 ffff880077793fd8 0000000000013f40
May 6 11:31:02 wutq-docker kernel: [62394.424521] ffff88007c461740 ffff880076b1dd00 000080d081f06880 ffffffff81cbbda0
May 6 11:31:02 wutq-docker kernel: [62394.424526] Call Trace:
May 6 11:31:02 wutq-docker kernel: [62394.424668] [<ffffffff816df509>] ? __slab_alloc+0x28a/0x2b2
May 6 11:31:02 wutq-docker kernel: [62394.424700] [<ffffffff816f1849>] schedule+0x29/0x70
May 6 11:31:02 wutq-docker kernel: [62394.424705] [<ffffffff816f1afe>] schedule_preempt_disabled+0xe/0x10
May 6 11:31:02 wutq-docker kernel: [62394.424710] [<ffffffff816f0777>] __mutex_lock_slowpath+0xd7/0x150
May 6 11:31:02 wutq-docker kernel: [62394.424715] [<ffffffff815dc809>] ? copy_net_ns+0x69/0x130
May 6 11:31:02 wutq-docker kernel: [62394.424719]
6BF2
[<ffffffff815dc0b1>] ? net_alloc_generic+0x21/0x30
May 6 11:31:02 wutq-docker kernel: [62394.424724] [<ffffffff816f038a>] mutex_lock+0x2a/0x50
May 6 11:31:02 wutq-docker kernel: [62394.424727] [<ffffffff815dc82c>] copy_net_ns+0x8c/0x130
May 6 11:31:02 wutq-docker kernel: [62394.424733] [<ffffffff81084851>] create_new_namespaces+0x101/0x1b0
May 6 11:31:02 wutq-docker kernel: [62394.424737] [<ffffffff81084a33>] copy_namespaces+0xa3/0xe0
May 6 11:31:02 wutq-docker kernel: [62394.424742] [<ffffffff81057a60>] ? dup_mm+0x140/0x240
May 6 11:31:02 wutq-docker kernel: [62394.424746] [<ffffffff81058294>] copy_process.part.22+0x6f4/0xe60
May 6 11:31:02 wutq-docker kernel: [62394.424752] [<ffffffff812da406>] ? security_file_alloc+0x16/0x20
May 6 11:31:02 wutq-docker kernel: [62394.424758] [<ffffffff8119d118>] ? get_empty_filp+0x88/0x180
May 6 11:31:02 wutq-docker kernel: [62394.424762] [<ffffffff81058a80>] copy_process+0x80/0x90
May 6 11:31:02 wutq-docker kernel: [62394.424766] [<ffffffff81058b7c>] do_fork+0x9c/0x230
May 6 11:31:02 wutq-docker kernel: [62394.424769] [<ffffffff816f277e>] ? _raw_spin_lock+0xe/0x20
May 6 11:31:02 wutq-docker kernel: [62394.424774] [<ffffffff811b9185>] ? __fd_install+0x55/0x70
May 6 11:31:02 wutq-docker kernel: [62394.424777] [<ffffffff81058d96>] sys_clone+0x16/0x20
May 6 11:31:02 wutq-docker kernel: [62394.424782] [<ffffffff816fb939>] stub_clone+0x69/0x90
May 6 11:31:02 wutq-docker kernel: [62394.424786] [<ffffffff816fb5dd>] ? system_call_fastpath+0x1a/0x1f
May 6 11:31:04 wutq-docker kernel: [62396.466223] unregister_netdevice: waiting for lo to become free. Usage count = 3
May 6 11:31:14 wutq-docker kernel: [62406.689132] unregister_netdevice: waiting for lo to become free. Usage count = 3
May 6 11:31:25 wutq-docker kernel: [62416.908036] unregister_netdevice: waiting for lo to become free. Usage count = 3
May 6 11:31:35 wutq-docker kernel: [62427.126927] unregister_netdevice: waiting for lo to become free. Usage count = 3
May 6 11:31:45 wutq-docker kernel: [62437.345860] unregister_netdevice: waiting for lo to become free. Usage count = 3
After happend this, I open another terminal and kill this process, and then restart docker, but this will be hanged.
I reboot the host, and it still display that messages for some minutes when shutdown: