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[Lucie B <lucinka.dm@xxxxxxxxx>]

Hi guys,

I have experienced the same problem, unfortunately mine wasn't fixed by upgrading to kernel  the 2.6.32-62.125.
Is there any way you could help me to solve this one? 
I can't play neither sound nor video on my computer, so it is kinda depressing not being able to watch movies and stuff. Thanx a lot :)

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https://bugs.launchpad.net/bugs/1327300

Title:
  Regression in commit 8e4e453d548e3c24e9070eda23c52f210951b921

Status in “linux” package in Ubuntu:
  Invalid
Status in “linux” source package in Lucid:
  Fix Committed

Bug description:
  Phil Turnbull reported a problem with the Lucid (2.6.32) backport of
    futex: Always cleanup owner tid in unlock_pi
    commit: 8e4e453d548e3c24e9070eda23c52f210951b921

  In patches-2.6.32.tgz:patches/0003-futex-Always-cleanup-owner-tid-in-unlock_pi.$
  there is this change (ignoring whitespace changes):

          curval = cmpxchg_futex_value_locked(uaddr, uval, newval);
  -
  -               if (curval == -EFAULT)
  +       if (curval)
                  ret = -EFAULT;

  which seems to change the behaviour of the function.

  The purpose of the return value of cmpxchg_futex_value_locked changed
  in

  37a9d912b24f96a0591 "futex: Sanitize cmpxchg_futex_value_locked API"

  which is not included in 2.6.32. This patch changes the return value to a
  status code, but in 2.6.32 the return value is the value of the futex or
  -EFAULT. With this backported patch, any futex with a non-zero value will
  return -EFAULT.

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