[asterisk-bugs] [JIRA] (ASTERISK-26216) res_fax: Deadlock when detect fax while channel executing Playback

[Richard Mudgett (JIRA)]

Richard Mudgett created ASTERISK-26216:
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             Summary: res_fax: Deadlock when detect fax while channel executing Playback
                 Key: ASTERISK-26216
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26216
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_dahdi, Channels/chan_pjsip, Channels/chan_sip/General, Resources/res_fax
    Affects Versions: 13.9.1
            Reporter: Richard Mudgett


chan_dahdi, chan_pjsip, chan_sip, and FAXOPT(faxdetect) can all deadlock if the channel is executing the Playback or similar dialplan application that results in a masquerade being necessary to redirect to the fax extension.  The ast_async_goto() function explicitly documents that the channel lock cannot be held when calling for this very reason.



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