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[Michael Neuling <1520411@xxxxxxxxxxxxxxxxxx>]

Thanks.  Works for me for the tests I've posted here:
https://lists.ozlabs.org/pipermail/linuxppc-dev/2015-November/136403.html

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https://bugs.launchpad.net/bugs/1520411

Title:
  powerpc/tm: Fix local DoS

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Trusty:
  In Progress
Status in linux source package in Vivid:
  In Progress
Status in linux source package in Wily:
  In Progress
Status in linux source package in Xenial:
  Confirmed

Bug description:
  The following two fixes have just made it into mpes powerpc fixes
  tree:

    7f821fc powerpc/tm: Check for already reclaimed tasks
    d2b9d2a powerpc/tm: Block signal return setting invalid MSR state

  They fix local DoS  (userspace can crash the OS) on powerpc POWER8
  cpus for any kernel v3.9+

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