[asterisk-bugs] [JIRA] (ASTERISK-26764) chan_pjsip: Crash looking up PJSIP call-id on hungup channel.

[Daniel Journo (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-26764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=235575#comment-235575 ] 

Daniel Journo commented on ASTERISK-26764:
------------------------------------------

Although I've seen this crash a few times on my production servers, I can't seem to recreate it using the testsuite test.
I've run the test over 500 times without a crash.

The only difference between my production servers and my development machine is the pjsip version.
Production is running against pjsip 2.4.5 and development is running pjsip 2.6.

Did you have to do anything else to get it to crash during the testsuite?


> chan_pjsip: Crash looking up PJSIP call-id on hungup channel.
> -------------------------------------------------------------
>
>                 Key: ASTERISK-26764
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26764
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_pjsip
>    Affects Versions: 13.13.1
>         Environment: kubuntu 10.04 32-bit
>            Reporter: Richard Mudgett
>         Attachments: asterisk_26764_testsuite_logs.zip, backtrace.txt, full backtrace.txt
>
>
> Got a crash during testsuite test:
> channels/pjsip/transfers/blind_transfer/caller_refer_only
> res_hep_rtcp was processing a stasis bus message and trying to lookup the PJSIP channel's call-id in assign_uuid().  This is a third-party thread trying to get the call-id of a channel that may get hung up while trying to get the information.  The dialplan function CHANNEL(pjsip,call-id) calls pjsip_acf_channel_read() which indirectly calls read_pjsip() in another thread.  read_pjsip() then calls channel_read_pjsip() which can crash if the channel is hungup by the time execution gets to channel_read_pjsip().



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