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[raoulbhatia <raoul@xxxxxxxxx>]

Multiple traces while running kernel "3.12.0-031200rc2-generic
#201309231935" from http://kernel.ubuntu.com/~kernel-
ppa/mainline/v3.12-rc2-saucy/ .

** Attachment added: "w1a_20130929_multiple_traces.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1229643/+attachment/3850841/+files/w1a_20130929_multiple_traces.txt

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https://bugs.launchpad.net/bugs/1229643

Title:
  [<ffffffffa070d1f3>] ? fscache_object_work_func+0xb3/0x1f0 [fscache] /
  BUG: unable to handle kernel NULL pointer dereference at
  0000000000000002

Status in The Linux Kernel:
  Unknown
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I encountered an kernel trace regarding Cachefilesd running
  3.11.0-7-generic #13-Ubuntu SMP Tue Sep 10 20:55:38 UTC 2013 x86_64
  GNU/Linux under Debian Squeeze 6.0.7 amd64 on an Opteron barebone.

  This server is an NFS client using cachefilesd.

  The NFS server is Debian Squeeze 6.0.7 amd64 running
  3.2.0-0.bpo.4-amd64 #1 SMP Debian 3.2.46-1~bpo60+1 x86_64 GNU/Linux
  and nfs-kernel-server on an Opteron barebone as well.

  No kerberos is in use.

  The system is basically the same as in Bug #1225494 . However, named
  bug is regarding a problem with nfs_idmap whereas this seems to be a
  problem with fscache.

  The trace is attached.

  Thanks,
  Raoul

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