[asterisk-bugs] [JIRA] (ASTERISK-27740) New Channel creation from new SIP dialog with Replaces failed to be properly tracked and destroyed

[Shannon Price (JIRA)]

Shannon Price created ASTERISK-27740:
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             Summary: New Channel creation from new SIP dialog with Replaces failed to be properly tracked and destroyed
                 Key: ASTERISK-27740
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27740
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_sip/Transfers
    Affects Versions: 13.19.1
         Environment: CentOS Linux release 7.2.1511 (Core) 1cpu 2GB memory

            Reporter: Shannon Price


When an existing Channel (A) is being replaced by a new channel (C) created from a new SIP dialog, the replacing channel (C) does not get properly tracked or destroyed as a channel. The SIP dialogs are properly terminated/destroyed however channel (C) is not fully destroyed. Channel (C) has 2 file descriptors left remaining in addition to the reference in core show channels. These will continue to accumulate. 

First call fully setup
Channel              Location             State   Application(Data)
SIP/voxprox-dev01-00 17732507208 at default: Up      Dial(SIP/10.1.144.4/1773250720
SIP/10.1.144.4-00000 17732507208 at default: Up      AppDial((Outgoing Line))
2 active channels
1 active call
1 call processed

New Channel create from new SIP dialog
Channel              Location             State   Application(Data)
SIP/c1nb2-00000002   17732507208 at default: Up      (None)
SIP/voxprox-dev01-00 h at default:6          Up      System(/opt/asterisk/var/lib/a
SIP/10.1.144.4-00000 17732507208 at default: Up      AppDial((Outgoing Line))
3 active channels
1 active call
1 call processed

Channel replaced - doesn't show an active call anymore
SIP/c1nb2-00000002   17732507208 at default: Up      (None)
SIP/10.1.144.4-00000 17732507208 at default: Up      AppDial((Outgoing Line))
2 active channels
0 active calls
1 call processed

Call complete, Channel left. All SIP dialogs correctly destroyed.
Channel              Location             State   Application(Data)
SIP/c1nb2-00000002   17732507208 at default: Up      (None)
0 active channels
0 active calls
1 call processed

For each channel left in this state, a timerfd and eventfd are left.
asterisk 2580 root   29u  a_inode                0,9        0     4852 [timerfd]
asterisk 2580 root   30u  a_inode                0,9        0     4852 [eventfd]




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