Bugzilla – Bug 5481
Callback deactivation hang on Debian 4.0 w/pthreads
Last modified: 2007-12-11 12:40:57
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Deactivating the callback module in c common hangs on Debian 4.0 when built
with phreads. I did a bunch of tracing and debugging on this, and think it
relates to this libc bug:
I've observed that the hang occurs when destroying the condition variable that
the callback signal thread was waiting on. It appears that pthread_cancel is
corrupting the condition variable being waited on. The broadcast-after-cancel
in the common lib makes the condition destroy not fail with EBUSY, but it still
Is this trunk, branch, or both?
The trick of using LD_ASSUME_KERNEL=2.4.19 suggested on
The fix for the debian bug related, will not be backported to stable.
I think that bugs 5581 is a duplicate of this.
Fix for this is committed to 4.0 branch and trunk. The LD_ASSUME_KERNEL
workaround had some side effects.