[asterisk-bugs] [JIRA] (ASTERISK-21778) astobj2.c:115 INTERNAL_OBJ: user_data is NULL followed by Segmentation fault on cancelled divert

[Matt Jordan (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-21778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=206312#comment-206312 ] 

Matt Jordan commented on ASTERISK-21778:
----------------------------------------

Actually, what Rusty requested was a backtrace from the crash. Please follow the instructions at the linked wiki article. Make sure you've compiled Asterisk with DEBUG_THREADS and BETTER_BACKTRACES.
                
> astobj2.c:115 INTERNAL_OBJ: user_data is NULL followed by Segmentation fault on cancelled divert
> ------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-21778
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21778
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>    Affects Versions: 1.8.17.0
>         Environment: Centos 5.8 (kernel 2.6.18) with chan_capi 1.1.4 and Divas4linux 3.0 branch
>            Reporter: Antony Nikrooz
>            Assignee: Rusty Newton
>            Severity: Critical
>         Attachments: asterisk crashing.txt
>
>
> This issue is reproducable in the following way:
> Call comes in on ISDN (CAPI) channel, Asterisk connects to SIP (going via MS Lync to Exchange 2010 UM). UM server tries to forward call to another extension on ISDN (Alcatel PABX). Lync sends SIP INVITE to Asterisk, ISDN line starts ringing.
> If I then hang up incoming call (ISDN->*sk->Lync), the Lync->*sk->ISDN call doesn't stop ringing. When call is answered, Asterisk crashes:
> {noformat}
> [2013-05-10 09:24:53] ERROR[5502]: astobj2.c:115 INTERNAL_OBJ: user_data is NULL
> lemonade*CLI> 
> Disconnected from Asterisk server
> [root at lemonade asterisk]# /usr/sbin/safe_asterisk: line 145:  5485 Segmentation fault      (core dumped) nice -n $PRIORITY ${ASTSBINDIR}/asterisk -f ${CLIARGS} ${ASTARGS} > /dev/${TTY} 2>&1 < /dev/${TTY}
> Asterisk ended with exit status 139
> {noformat}
> Full SIP debug will be attached

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