[asterisk-bugs] [JIRA] (ASTERISK-25386) Asterisk Chan_sip.c Deadlock. All SIP traffic stops

[Christopher (JIRA)]

Christopher created ASTERISK-25386:
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             Summary: Asterisk Chan_sip.c Deadlock. All SIP traffic stops
                 Key: ASTERISK-25386
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25386
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_sip/General
    Affects Versions: 1.8.32.3, 1.8.15.0
         Environment: Centos 6.4 Kernel 2.6.32-358.el6.i686. Core i7-3770k Jetway Q77, 8 GB RAM
Static flatfiles created by Execs. 
            Reporter: Christopher


All SIP traffic stops randomly. core show channels will never return, core show Locks shows Deadlock in the channel driver. our core show locks looks similar to 21228 and also to 25213. However we are NOT using realtime. this issue occured on average about every 50,000 call completions on 1.8.15-cert5. we installed 1.8.32.3  with DONT_OPTIMIZE, DEBUG_THREADS, BETTER_BACKTRACES, and we are lucky to get 3000 calls being lockups. each time our BT and locks look similar. existing calls continue to progress through applications such as voicemail, queues, etc until they reach a point where chan_sip is required.. (ie a call will continue in the queue until its time to ring an agent.. then that call will hang in dead air). no SIP registrations are accepted. all NOTIFY traffic stops as well. the AMI continues to function. CLI command sip show channels returns, however core show channels hangs. will attach pertinent backtraces



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