[Bug 1081734] Re: malloc hangs when ltp mallocstress is run repeatedly

[bhs]

Adam,
This bug repros in 12.04.1 system. 
This patch applies to eligbc-2.15 which is in precise and quantal.

I am looking for this fix in ubuntu repository for precise. I wish to do
the required work by assigning to bug to myself and port changes to
eglibc-2.15 branch. Please let me know how I can get started on pushing
the patch to launchpad.

If community is OK, with the patch, can it be pushed to 12.04.2 release
after release-based tests are completed.

** Changed in: eglibc (Ubuntu Precise)
     Assignee: (unassigned) => bhs (bharath-vegito)

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https://bugs.launchpad.net/bugs/1081734

Title:
  malloc hangs when ltp mallocstress is run repeatedly

Status in “eglibc” package in Ubuntu:
  Fix Released
Status in “eglibc” source package in Precise:
  New

Bug description:
  - malloc sleeps continously when the mallocstress application which part of ltp package is executed in a loop.
  - From gdb backtrace it appears to be for a futex to be released in libc code. This is deadlock in glibc

  There are some discussions going on for including this fix in next eglibc release. 
  emails 
  http://sourceware.org/ml/libc-alpha/2012-06/msg00648.html
  http://permalink.gmane.org/gmane.comp.lib.glibc.alpha/23397
  http://sourceware.org/ml/libc-alpha/2012-07/msg00027.html
  http://sourceware.org/ml/libc-alpha/2012-08/msg00163.html
  http://permalink.gmane.org/gmane.linux.redhat.fedora.extras.cvs/832985

  discussion in http://sourceware-org.1504.n7.nabble.com/BZ-13939
  -malloc-deadlock-td13648.html#none

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