[asterisk-dev] [Code Review] 2756: Fix deadlocks in chan_sip in REFER and BYE handling

[opticron]

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Review request for Asterisk Developers and Mark Michelson.


Bugs: ASTERISK-22215
    https://issues.asterisk.org/jira/browse/ASTERISK-22215


Repository: Asterisk


Description
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This resolves several deadlocks in chan_sip relating to usage of ast_channel_bridge_peer and improves accessibility of lock debugging function calls.

These issues were found while fixing the sip attended transfer integration tests for the referenced bug.


Diffs
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  trunk/channels/chan_sip.c 396504 
  trunk/include/asterisk/lock.h 396504 
  trunk/main/utils.c 396504 

Diff: https://reviewboard.asterisk.org/r/2756/diff/


Testing
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With these changes, chan_sip no longer stalls part of the way through the rewritten sip attended transfer tests on the REFER or at the end on the final BYE.


Thanks,

opticron

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