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[Launchpad Bug Tracker <1442678@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 3.19.0-14.14

---------------
linux (3.19.0-14.14) vivid; urgency=low

  [ Upstream Kernel Changes ]

  * powerpc: fix memory corruption by pnv_alloc_idle_core_states
    - LP: #1442678
  * nvme: Fix PRP list calculation for non-4k system page size
    - LP: #1442186
  * powerpc/perf: Cap 64bit userspace backtraces to PERF_MAX_STACK_DEPTH
    - LP: #1442180
 -- Leann Ogasawara <leann.ogasawara@xxxxxxxxxxxxx>   Fri, 10 Apr 2015 11:40:37 -0700

** Changed in: linux (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1442678

Title:
  powerpc: fix memory corruption by pnv_alloc_idle_core_states

Status in linux package in Ubuntu:
  Fix Released

Bug description:
  [Impact]

  powernv users can potentially see kernel panics due to an issue in
  pnv_alloc_idle_core_states()

  [Test Case]

  Use powernv/cpuidle for extended period without seeing panics due to
  memory corruption.

  [Fix]

  commit d52356e7f48e400ca258c6763a232a92fa82ff68
  Fixes: 7cba160ad789 (powernv/cpuidle: Redesign idle states management)

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