[sr-dev] [tracker] Comment added: kamailio sometimes crash when handling failure events (Attachment added)

[sip-router]

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The following task has a new comment added:

FS#427 - kamailio sometimes crash when handling failure events
User who did this - Pawel Sternal (Sternik)

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I attach a pcap and bt full from gdb (core) from today's crash. 
I found in logs when processing ACK this:
<code>
May 14 11:59:50 node02 /usr/sbin/kamailio[31576]: CRITICAL: dialog [dlg_hash.c:841]: log_next_state_dlg(): bogus event 6 in state 1 for dlg 0xa5223ba0 [2649:5896] with clid '039f972664562d09788758b36f12fc1b at sip.vanbergsystems.pl' and tags 'as79a6475b' ''
</code>

And about 30 seconds later:
<code>
May 14 12:00:18 node02 /usr/sbin/kamailio[31560]: ALERT: <core> [main.c:775]: handle_sigs(): child process 31582 exited by a signal 11
May 14 12:00:18 node02 /usr/sbin/kamailio[31560]: ALERT: <core> [main.c:778]: handle_sigs(): core was generated
</code>

This child processing failure route:
<code>
    if (t_is_canceled()) {
        xlog("L_NOTICE","LOG:$ci (failure route 1) transaction was cancelled by UAC");

        avp_db_query("select icid_var from dialog_data where callid='$ci'","$avp(icid_next)");

        #acc
        setflag(30);
        drop;
        exit;
    }
</code>
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http://sip-router.org/tracker/index.php?do=details&task_id=427#comment1446

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