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).
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1527748/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
