[asterisk-dev] [Code Review] 3269: chan_sip: fix deadlock of monlock between unload_module and do_monitor

Corey Farrell reviewboard at asterisk.org
Tue Feb 25 18:10:29 CST 2014

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(Updated Feb. 25, 2014, 7:10 p.m.)

Review request for Asterisk Developers.

Bugs: ASTERISK-21406

Repository: Asterisk


This change prevents a deadlock caused by running pthread_join with monlock held in unload_module.  This ensures that if do_monitor trys to lock monlock after unload_module, it will eventually receive the lock and be allowed to exit.


  /branches/1.8/channels/chan_sip.c 408931 

Diff: https://reviewboard.asterisk.org/r/3269/diff/


Tested with chan_sip-unload-deadlock-debug.patch from ASTERISK-21406 to ensure I could no longer reproduce the deadlock.


Corey Farrell

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