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[Bug 1403152] Re: unregister_netdevice: waiting for lo to become free. Usage count

 

Hi,

We're hitting this bug on the latest trusty kernel in a similar context
of this docker issue, we also had this problem on lucid with a custom
3.8.11 kernel which seems to be more agressive than trusty but still
happens:

https://github.com/docker/docker/issues/5618

In this issue an upstream kernel bug and a redhat bug are mentioned:

https://bugzilla.kernel.org/show_bug.cgi?id=81211
https://bugzilla.redhat.com/show_bug.cgi?id=880394

On the redhat bug there is an upstream commit that suposedly fix the
problem:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dcdfdf56b4a6c9437fc37dbc9cee94a788f9b0c4

Any chance to have this patch backported to the trusty kernel?

Thanks,

Rodrigo.

** Bug watch added: Linux Kernel Bug Tracker #81211
   http://bugzilla.kernel.org/show_bug.cgi?id=81211

** Bug watch added: Red Hat Bugzilla #880394
   https://bugzilla.redhat.com/show_bug.cgi?id=880394

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https://bugs.launchpad.net/bugs/1403152

Title:
  unregister_netdevice: waiting for lo to become free. Usage count

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I currently running trusty latest patches and i get on these hardware
  and software:

  Ubuntu 3.13.0-43.72-generic 3.13.11.11

  processor	: 7
  vendor_id	: GenuineIntel
  cpu family	: 6
  model		: 77
  model name	: Intel(R) Atom(TM) CPU  C2758  @ 2.40GHz
  stepping	: 8
  microcode	: 0x11d
  cpu MHz		: 2400.000
  cache size	: 1024 KB
  physical id	: 0
  siblings	: 8
  core id		: 7
  cpu cores	: 8
  apicid		: 14
  initial apicid	: 14
  fpu		: yes
  fpu_exception	: yes
  cpuid level	: 11
  wp		: yes
  flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes rdrand lahf_lm 3dnowprefetch arat epb dtherm tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep erms
  bogomips	: 4799.48
  clflush size	: 64
  cache_alignment	: 64
  address sizes	: 36 bits physical, 48 bits virtual
  power management:

  somehow reproducable the subjected error, and lxc is working still but
  not more managable until a reboot.

  managable means every command hangs.

  I saw there are alot of bugs but they seams to relate to older version
  and are closed, so i decided to file a new one?

  I run alot of machine with trusty an lxc containers but only these kind of machines produces these errors, all
  other don't show these odd behavior.

  thx in advance

  meno

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