kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Mark Petersen, thank you for taking the time to report this bug and
helping to make Ubuntu better. However, I am closing it because the
requested patch is in Raring+ as per
http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-
raring.git;a=commit;h=1d17d17484d40f2d5b35c79518597a2b25296996 . It
would be best to utilize the supported Raring enablement stack to
utilize this patch in Precise following
https://wiki.ubuntu.com/Kernel/LTSEnablementStack .

If this kernel doesn't address your issue, please reopen and make a
comment to this.

** Changed in: linux (Ubuntu)
       Status: Triaged => Invalid

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https://bugs.launchpad.net/bugs/1116362

Title:
  KVM Lockup Bug

Status in “linux” package in Ubuntu:
  Invalid

Bug description:
  I've hit a bug present in 3.2.0-37 that causes my KVM virtual machines
  to lockup on occasion, possibly related to this this change in
  3.2.0-32

  
  * time: Avoid making adjustments if we haven't accumulated anything
      - LP: #1053039


  I believe there is already an upstream  fix to this patch that I
  believe resolves my issue.

  
  I'd like to request that this patch be included in precise.

  
  Commit-ID:  1d17d17484d40f2d5b35c79518597a2b25296996
  Gitweb:     http://git.kernel.org/tip/1d17d17484d40f2d5b35c79518597a2b25296996
  Author:     Ingo Molnar <mingo@xxxxxxxxxx>
  AuthorDate: Sat, 4 Aug 2012 21:21:14 +0200
  Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
  CommitDate: Sun, 5 Aug 2012 12:37:14 +0200

  time: Fix adjustment cleanup bug in timekeeping_adjust()

  Tetsuo Handa reported that sporadically the system clock starts
  counting up too quickly which is enough to confuse the hangcheck
  timer to print a bogus stall warning.

  Commit 2a8c0883 "time: Move xtime_nsec adjustment underflow handling
  timekeeping_adjust" overlooked this exit path:

          } else
                  return;

  which should really be a proper exit sequence, fixing the bug as a
  side effect.

  Also make the flow more readable by properly balancing curly
  braces.

  Reported-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> wrote:
  Tested-by: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> wrote:
  Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>

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