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[Jason Roelofs <jasongroelofs@xxxxxxxxx>]

$ uname -a
Linux ip-10-154-139-57 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

I'd like to add to this that the upcoming kernel update, 3.13.0-37 from
the proposed package set, also has this same problem. This is on an
Amazon AWS m1.small box.

I am also able to trigger the kernel panic through a simple `ab`
invocation. With the params of -c 10 -n 1000 I have yet to go through
two full runs without a panic, so it's not related to ELB at all, just
an eventual failure of the networking stack.

Attached is the kernel panic log for this newest kernel.

** Attachment added: "ubuntu-3.13.0-37-panic.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1275879/+attachment/4220556/+files/ubuntu-3.13.0-37-panic.txt

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https://bugs.launchpad.net/bugs/1275879

Title:
  Kernel panic

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  I run ubuntu servers 13.04, 13.10, and 14.04 on the AWS cloud.
  Whenever I install haproxy and nginx on the same server, after hitting
  it for a while, a kernel panic is caused. However, the kernel panic
  does not show up in ubuntu 12.04.  The kernel panic is pasted at the
  end of the attachment.

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