[asterisk-bugs] [JIRA] (ASTERISK-22667) crash: chan_pjsip with directmedia and both endpoints placing each other on hold

[John Bigelow (JIRA)]

John Bigelow created ASTERISK-22667:
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             Summary: crash: chan_pjsip with directmedia and both endpoints placing each other on hold
                 Key: ASTERISK-22667
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22667
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_pjsip, Resources/res_rtp_asterisk
    Affects Versions: 12.0.0-alpha1
         Environment: Asterisk 12 branch r400669
            Reporter: John Bigelow
         Attachments: backtrace.txt, full.txt

Setup:
* Using chan_pjsip with two phones configured to allow directmedia for both endpoints.

Process:
* Placed call from phone_A to phone_B
* After ensuring two way audio and the RTP was being sent directly between the phones I pressed the Hold button on both phones simultaneously. This first attempt failed to place both on hold so I attempted again which put both phones on hold. The messages 'Started music on hold...' & 'Stopped music on hold...' started printing to the CLI non-stop.
* On phone_B I pressed the Hold button to take phone_A off of hold at which point Asterisk crashed.

The backtrace and full log has been attached.

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