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[Bug 1503655] Missing required logs.


This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1503655

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: trusty

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  Kernel bug in eventpoll_release_file+0x46/0xa0 with 3.13.0-66.107

Status in linux package in Ubuntu:

Bug description:
  With the latest kernel in trusty-proposed I seem to get panics on my
  X230 laptop:

  BUG: unable to handle kernel paging request at fffffffffffffff8
  IP: [<ffffffff81207176>] eventpoll_release_file+0x46/0xa0
  PGD 1c11067 PUD 1c13067 PMD 0 
  Oops: 0000 [#1] SMP 
  Modules linked in: snd_hrtimer ip6table_filter ip6_tables ebtable_nat ebt
  CPU: 1 PID: 1939 Comm: pulseaudio Not tainted 3.13.0-66-generic #107-Ubun
  Hardware name: LENOVO 2324CTO/2324CTO, BIOS G2ET94WW (2.54 ) 04/30/2013
  task: ffff8800c2068000 ti: ffff8800c4826000 task.ti: ffff8800c4826000
  RIP: 0010:[<ffffffff81207176>]  [<ffffffff81207176>] eventpoll_release_fi
  RSP: 0018:ffff8800c4827e78  EFLAGS: 00010286
  RAX: 0000000000000000 RBX: ffffffffffffffb7 RCX: 000000000000000f
  RDX: 0000000001000000 RSI: 0000000000000000 RDI: ffffffff81c72e80
  RBP: ffff8800c4827ea0 R08: 0000000000000000 R09: 0000000000040000
  R10: ffff880210471e61 R11: 0000000000000206 R12: ffffffffffffffa8
  R13: ffff880210471e61 R14: ffff8800c4bc6c00 R15: ffff8800c4acc8f0
  FS:  00007f3dbedd6740(0000) GS:ffff88021e240000(0000) knlGS:0000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: fffffffffffffff8 CR3: 00000000ce1da000 CR4: 00000000001407e0
  ffff8800c4acc840 0000000000000008 ffff880210471e61 ffff8800c4bc6c00
  ffff8800c4afdc00 ffff8800c4827ee8 ffffffff811c00aa 0000000000000000
  ffff8800c2068000 0000000000000000 ffffffff81ebb680 ffff8800c2068620
  Call Trace:
  [<ffffffff811c00aa>] __fput+0x24a/0x260
  [<ffffffff811c010e>] ____fput+0xe/0x10
  [<ffffffff81088557>] task_work_run+0xa7/0xe0
  [<ffffffff81013ed7>] do_notify_resume+0x97/0xb0
  [<ffffffff81734f5a>] int_signal+0x12/0x17
  Code: 00 41 56 41 55 41 54 53 e8 68 37 52 00 49 8b 07 48 8b 08 49 39 c7 4
  RIP  [<ffffffff81207176>] eventpoll_release_file+0x46/0xa0
  RSP <ffff8800c4827e78>
  CR2: fffffffffffffff8
  ---[ end trace f2ee3b43ddaf4bd4 ]---

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