* Re: [Bugme-new] [Bug 30082] New: after lxc-stop: unregister_netdevice: waiting for lo to become free. Usage count: 3
[not found] <bug-30082-10286@https.bugzilla.kernel.org/>
@ 2011-03-02 0:13 ` Andrew Morton
0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2011-03-02 0:13 UTC (permalink / raw)
To: netdev; +Cc: bugzilla-daemon, bugme-daemon, mjt
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On Mon, 28 Feb 2011 14:47:03 GMT
bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=30082
>
> Summary: after lxc-stop: unregister_netdevice: waiting for lo
> to become free. Usage count: 3
> Product: Networking
> Version: 2.5
> Kernel Version: 2.6.36 2.6.37
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: Other
> AssignedTo: acme@ghostprotocols.net
> ReportedBy: mjt@tls.msk.ru
> Regression: No
>
>
> As far as I can tell so far this is triggered by lxc version 0.7.4, at least I
> haven't seen this before. I tried 2.6.36[.3] and 2.6.37[.2] kernels so far,
> both behaves similarly.
>
> The problem is, when I shut down a container which uses bridged veth interface
> pair using lxc-stop, the container terminates, but host system starts crying
> about unregister_netdevice like this:
>
> [902885.096462] unregister_netdevice: waiting for lo to become free. Usage
> count = 3
> [902895.229785] unregister_netdevice: waiting for lo to become free. Usage
> count = 3
> [...]
> [904247.123002] unregister_netdevice: waiting for lo to become free. Usage
> count = 3
>
> After some, random, time, this stops - sometimes after just one message,
> sometimes after several minutes. Sometimes it does not happen at all.
>
> This looks like a kernel issue triggerable by lxc-0.7.4.
>
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2011-03-02 0:13 ` [Bugme-new] [Bug 30082] New: after lxc-stop: unregister_netdevice: waiting for lo to become free. Usage count: 3 Andrew Morton
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