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[Bug 1527748] Re: lts-utopic kernel needs boot-up race condition fix.


It looks like the patch backported for
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1508609 is not
quite enough to fix this issue on pre-4.1 kernels. Those kernels also
(or in general, must call cpu_notify before smpboot_unpark_threads).

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  lts-utopic kernel needs boot-up race condition fix.

Status in linux package in Ubuntu:

Bug description:
  The underlying kernel bug was originally reported and fixed here:

  The bug was fixed confirmed not present in the original trusty kernel
  and has been fixed in vivid and wily, but was not addressed in utopic
  as it has EOL.

  If my understanding is correct, while Utopic has EOL, the lts-utopic
  hwe kernel is expected to be supported until the final Trusty release
  (14.04.05) next summer.  Can we have the original kernel issue also
  addressed in lts-utopic (assuming it hasn't been already?).  We are
  seeing users running this kernel on trusty systems and they still
  appear to be affected.


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