[Bug 1627768] Re: multipath silently crashes with general protection

[Nish Aravamudan]

@rackspace.matt: Are you able to test either 16.04.2 or (even better) in
17.04 to see if it also happens there? Just lets us narrow down whether
the bug is already fixed upstream/in the package version there (0.6.4 is
the upstream version).

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https://bugs.launchpad.net/bugs/1627768

Title:
  multipath silently crashes with general protection

Status in multipath-tools package in Ubuntu:
  Confirmed

Bug description:
  When mulitpathd is called for a reload, a general protection fault
  occurs on the process. The process will silently fail with the
  exception of a general protection fault showing the kern.log's.

  Sep 23 15:14:25 123456-compute kernel: [2060005.780291] traps:
  multipathd[8490] general protection ip:7f5e9a8b47c5 sp:7f5e9b7dc880
  error:0 in libc-2.19.so[7f5e9a836000+1ba000]

  This occurs on multiple hosts in our environment and is not isolated
  to a single host. The backend storage is iSCSI, with XtremIO.

  Ubuntu 14.04.4 LTS (GNU/Linux 3.13.0-92-generic x86_64)
  multipath-tools/trusty-updates,now 0.4.9-3ubuntu7.13 amd64 [installed]
  libc6/trusty-updates,trusty-security,now 2.19-0ubuntu6.9 amd64 [installed]

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