kernel-packages team mailing list archive

[Owen Hofmann <osh@xxxxxxxxxx>]

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
need
https://github.com/torvalds/linux/commit/00df35f991914db6b8bde8cf09808e19a9cffc3d
(or in general, must call cpu_notify before smpboot_unpark_threads).

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https://bugs.launchpad.net/bugs/1527748

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

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  The underlying kernel bug was originally reported and fixed here:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1508609

  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.

  Thanks!

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