[asterisk-bugs] [JIRA] (ASTERISK-24595) chan_sip.c Deadlock on SMP

[Grigory Milev (JIRA)]

Grigory Milev created ASTERISK-24595:
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             Summary: chan_sip.c Deadlock on SMP
                 Key: ASTERISK-24595
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24595
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_sip/General
    Affects Versions: 11.14.1
         Environment: Linux home 3.0.35PD14.0.0 #8 SMP PREEMPT Tue Nov 25 22:18:16 MSK 2014 armv7l GNU/Linux

Platform: iMX6 quad (armh)

OS: Altlinux sisyphus based.
            Reporter: Grigory Milev


When asterisk runed on all cpu cores, fue times pear day sip deadlocked:

[2014-12-03 12:50:30] ERROR[26839] lock.c: chan_sip.c line 20849 (show_channels_cb): Deadlock? waited 85 sec for mutex 'cur'?
[2014-12-03 12:50:30] ERROR[26839] lock.c: chan_sip.c line 3940 (retrans_pkt): 'cur' was locked here.
[2014-12-03 12:50:35] ERROR[26839] lock.c: chan_sip.c line 20849 (show_channels_cb): Deadlock? waited 90 sec for mutex 'cur'?

When i load asterisk only on one core (taskset -a 0x0001 asterisk -fn), then no dedalock at all, but the next dead sip channels:

home*CLI> sip show channels
Peer             User/ANR         Call ID          Format           Hold     Last Message    Expiry     Peer
37.17.17.73      205              74439a312ea2eab  (nothing)        No       Init: NOTIFY               <guest>
37.17.114.246    205              30a22f2359ff7ee  (nothing)        No       Init: NOTIFY               <guest>
37.17.114.246    205              1b4153685e957cd  (nothing)        No       Init: NOTIFY               <guest>





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