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

[Grigory Milev (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-24595?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Grigory Milev updated ASTERISK-24595:
-------------------------------------

    Attachment: debuglog.bz2
                core-show-locks.txt.bz2
                backtrace-threads.txt.bz2

That log's files i'm collect after sip locked (not respons at all), i'm make sip reload and receive dead locks.

With out SMP (asterisk attached to one core) sip never lock.

> 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
>            Assignee: Grigory Milev
>         Attachments: backtrace-threads.txt.bz2, core-show-locks.txt.bz2, debuglog.bz2
>
>
> 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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