[Bug 1091186] [NEW] Backport upstream bug 13844 - fix for futex issue

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Public bug reported:

There is a subtle futex bug in glibc 2.15 which is fixed dealt with by
BZ #13844 (http://sourceware.org/bugzilla/show_bug.cgi?id=13844).

This is being hit regularly when testing locks on ARM.

Can this be backported to precise and quantal (which I believe are both
2.15 based)?

The patch is here:
http://sourceware.org/git/?p=glibc.git;a=commit;h=7e7fa5f8719c0a497f4b262e6fb5625c13b6c22e

** Affects: eglibc
     Importance: Unknown
         Status: Unknown

** Affects: eglibc (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: eglibc (Ubuntu Precise)
     Importance: High
         Status: Confirmed

** Affects: eglibc (Ubuntu Quantal)
     Importance: High
         Status: Confirmed

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https://bugs.launchpad.net/bugs/1091186

Title:
  Backport upstream bug 13844 - fix for futex issue

Status in Embedded GLIBC:
  Unknown
Status in “eglibc” package in Ubuntu:
  New
Status in “eglibc” source package in Precise:
  Confirmed
Status in “eglibc” source package in Quantal:
  Confirmed

Bug description:
  There is a subtle futex bug in glibc 2.15 which is fixed dealt with by
  BZ #13844 (http://sourceware.org/bugzilla/show_bug.cgi?id=13844).

  This is being hit regularly when testing locks on ARM.

  Can this be backported to precise and quantal (which I believe are
  both 2.15 based)?

  The patch is here:
  http://sourceware.org/git/?p=glibc.git;a=commit;h=7e7fa5f8719c0a497f4b262e6fb5625c13b6c22e

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