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    <tt>OK, once you started GDB like <tt>"gdb /path/to/opensips
        /path/to/core"<tt>, run step by step:<br>
          <br>
          <tt>f 0<br>
            <tt>p *s1<br>
              <tt>f 5<br>
                <tt>p *<tt>a<br>
                    <br>
                    <tt>Regards,</tt><br>
                  </tt></tt></tt></tt></tt></tt></tt></tt>
    <pre class="moz-signature" cols="72">Bogdan-Andrei Iancu

OpenSIPS Founder and Developer
  <a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a>
OpenSIPS Summit 2018
  <a class="moz-txt-link-freetext" href="http://www.opensips.org/events/Summit-2018Amsterdam">http://www.opensips.org/events/Summit-2018Amsterdam</a>
</pre>
    <div class="moz-cite-prefix">On 02/26/2018 05:43 PM, Ben Newlin
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:6D9EBB18-914E-49ED-988F-7D582007B88E@genesys.com">
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      <div class="WordSection1">
        <p class="MsoNormal"><span style="font-size:11.0pt">Bogdan,<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="font-size:11.0pt">Unfortunately
            I am not at all familiar with gdb. How do I change frames?<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="font-size:11.0pt">Ben Newlin<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
        <div style="border:none;border-top:solid #B5C4DF
          1.0pt;padding:3.0pt 0in 0in 0in">
          <p class="MsoNormal"><b><span style="color:black">From: </span></b><span
              style="color:black">Bogdan-Andrei Iancu
              <a class="moz-txt-link-rfc2396E" href="mailto:bogdan@opensips.org"><bogdan@opensips.org></a><br>
              <b>Date: </b>Monday, February 26, 2018 at 10:40 AM<br>
              <b>To: </b>Ben Newlin <a class="moz-txt-link-rfc2396E" href="mailto:Ben.Newlin@genesys.com"><Ben.Newlin@genesys.com></a>,
              OpenSIPS users mailling list
              <a class="moz-txt-link-rfc2396E" href="mailto:users@lists.opensips.org"><users@lists.opensips.org></a><br>
              <b>Subject: </b>Re: [OpenSIPS-Users] OpenSIPS crashing on
              200 OK<o:p></o:p></span></p>
        </div>
        <div>
          <p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
        </div>
        <p class="MsoNormal"><tt><span style="font-size:10.0pt">Hi Ben,</span></tt><span
            style="font-size:10.0pt;font-family:"Courier New""><br>
            <br>
            <tt>The backtrace points to the script interpreter
              :D....Please do the followings (assuming you are a bit
              faimilar with GDB :) ) :</tt><br>
            <br>
            <tt>in frame 0, please do "print *s1"</tt><br>
            <tt>and in frame 5 do "print *a"</tt><br>
            <br>
            <tt>Regards,</tt><br>
            <br>
          </span><o:p></o:p></p>
        <pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
        <pre><o:p> </o:p></pre>
        <pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
        <pre>  <a href="http://www.opensips-solutions.com" moz-do-not-send="true">http://www.opensips-solutions.com</a><o:p></o:p></pre>
        <pre>OpenSIPS Summit 2018<o:p></o:p></pre>
        <pre>  <a href="http://www.opensips.org/events/Summit-2018Amsterdam" moz-do-not-send="true">http://www.opensips.org/events/Summit-2018Amsterdam</a><o:p></o:p></pre>
        <div>
          <p class="MsoNormal">On 02/22/2018 07:33 PM, Ben Newlin wrote:<o:p></o:p></p>
        </div>
        <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
          <p class="MsoNormal"><span style="font-size:11.0pt">Bogdan,</span><o:p></o:p></p>
          <p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
          <p class="MsoNormal"><span style="font-size:11.0pt">Here is
              the backtrace: <a href="https://pastebin.com/6tZhrWek"
                moz-do-not-send="true">
                https://pastebin.com/6tZhrWek</a></span><o:p></o:p></p>
          <p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
          <p class="MsoNormal"><span style="font-size:11.0pt">I am not
              using TCP, BIN, or HEP in this configuration. I am not
              using anything, to my knowledge, which should be causing
              TCP worker threads to be spawned.
            </span><o:p></o:p></p>
          <p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
          <p class="MsoNormal"><span style="font-size:11.0pt">Ben Newlin</span><o:p></o:p></p>
          <p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
          <div style="border:none;border-top:solid #B5C4DF
            1.0pt;padding:3.0pt 0in 0in 0in">
            <p class="MsoNormal"><b><span style="color:black">From: </span></b><span
                style="color:black">Bogdan-Andrei Iancu
                <a href="mailto:bogdan@opensips.org"
                  moz-do-not-send="true"><bogdan@opensips.org></a><br>
                <b>Date: </b>Thursday, February 22, 2018 at 5:26 AM<br>
                <b>To: </b>OpenSIPS users mailling list <a
                  href="mailto:users@lists.opensips.org"
                  moz-do-not-send="true">
                  <users@lists.opensips.org></a>, Ben Newlin <a
                  href="mailto:Ben.Newlin@genesys.com"
                  moz-do-not-send="true">
                  <Ben.Newlin@genesys.com></a><br>
                <b>Subject: </b>Re: [OpenSIPS-Users] OpenSIPS crashing
                on 200 OK</span><o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
          </div>
          <p class="MsoNormal"><a name="_MailOriginalBody"
              moz-do-not-send="true"><tt><span style="font-size:10.0pt">Hi
                  Ben,</span></tt></a><span
              style="mso-bookmark:_MailOriginalBody"><span
                style="font-size:10.0pt;font-family:"Courier New
                \,serif""><br>
                <br>
              </span></span><span style="mso-bookmark:_MailOriginalBody"><tt><span
                  style="font-size:10.0pt">Do you have a full backtrace
                  extracted from the core ?</span></tt></span><span
              style="mso-bookmark:_MailOriginalBody"><span
                style="font-size:10.0pt;font-family:"Courier New
                \,serif""><br>
                <br>
              </span></span><span style="mso-bookmark:_MailOriginalBody"><tt><span
                  style="font-size:10.0pt">In regards to the TCP
                  processes, the TCP layer will automatically enabled
                  itself depending on what protocols (tcp-based) you are
                  using in script. Maybe you do not use SIP with TCP,
                  but do you use BIN or HEP ?</span></tt></span><span
              style="mso-bookmark:_MailOriginalBody"><span
                style="font-size:10.0pt;font-family:"Courier New
                \,serif""><br>
                <br>
              </span></span><span style="mso-bookmark:_MailOriginalBody"><tt><span
                  style="font-size:10.0pt">Regards,</span></tt></span><span
              style="mso-bookmark:_MailOriginalBody"><span
                style="font-size:10.0pt;font-family:"Courier New
                \,serif""><br>
                <br>
                <br>
              </span><o:p></o:p></span></p>
          <pre><span style="mso-bookmark:_MailOriginalBody">Bogdan-Andrei Iancu<o:p></o:p></span></pre>
          <pre><span style="mso-bookmark:_MailOriginalBody"> <o:p></o:p></span></pre>
          <pre><span style="mso-bookmark:_MailOriginalBody">OpenSIPS Founder and Developer<o:p></o:p></span></pre>
          <pre><span style="mso-bookmark:_MailOriginalBody">  </span><a href="http://www.opensips-solutions.com" moz-do-not-send="true"><span style="mso-bookmark:_MailOriginalBody">http://www.opensips-solutions.com</span><span style="mso-bookmark:_MailOriginalBody"></span></a><span style="mso-bookmark:_MailOriginalBody"><o:p></o:p></span></pre>
          <pre><span style="mso-bookmark:_MailOriginalBody">OpenSIPS Summit 2018<o:p></o:p></span></pre>
          <pre><span style="mso-bookmark:_MailOriginalBody">  </span><a href="http://www.opensips.org/events/Summit-2018Amsterdam" moz-do-not-send="true"><span style="mso-bookmark:_MailOriginalBody">http://www.opensips.org/events/Summit-2018Amsterdam</span><span style="mso-bookmark:_MailOriginalBody"></span></a><span style="mso-bookmark:_MailOriginalBody"><o:p></o:p></span></pre>
          <div>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody">On 02/22/2018
                12:38 AM, Ben Newlin wrote:<o:p></o:p></span></p>
          </div>
          <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt">Hi,</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt"> </span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt">I am currently upgrading to
                  2.3.3 and am running off the HEAD of the 2.3 branch.
                  My OpenSIPS is consistently crashing when trying to
                  process the ACK to an initial INVITE request. I am
                  testing with SIPp using a simple single call scenario.
                  I see the following in the logs:</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt"> </span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 21:32:27 [383]
                  DBG:core:io_wait_loop_epoll: [TCP_main] EPOLLHUP on IN
                  ->connection closed by the remote peer!</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 21:32:27 [383]
                  CRITICAL:core:receive_fd: EOF on 33</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 21:32:27 [383]
                  DBG:core:handle_worker: dead child 9, pid 370
                  (shutting down?)</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 21:32:27 [383]
                  DBG:core:io_watch_del: [TCP_main] io_watch_del op on
                  index 8 33 (0x8d4e80, 33, 8, 0x0,0x1) fd_no=29 called</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 21:32:27 [361]
                  DBG:core:handle_sigs: status = 139</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 21:32:27 [361]
                </span></span><a href="INFO:core:handle_sigs"
                moz-do-not-send="true"><span
                  style="mso-bookmark:_MailOriginalBody"><span
                    style="font-size:10.0pt">INFO:core:handle_sigs</span></span><span
                  style="mso-bookmark:_MailOriginalBody"></span></a><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">: child process 370 exited by
                  a signal 11</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 21:32:27 [361]
                </span></span><a href="INFO:core:handle_sigs"
                moz-do-not-send="true"><span
                  style="mso-bookmark:_MailOriginalBody"><span
                    style="font-size:10.0pt">INFO:core:handle_sigs</span></span><span
                  style="mso-bookmark:_MailOriginalBody"></span></a><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">: core was generated</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 21:32:27 [361]
                </span></span><a href="INFO:core:handle_sigs"
                moz-do-not-send="true"><span
                  style="mso-bookmark:_MailOriginalBody"><span
                    style="font-size:10.0pt">INFO:core:handle_sigs</span></span><span
                  style="mso-bookmark:_MailOriginalBody"></span></a><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">: terminating due to SIGCHLD</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt"> </span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt">I also notice that OpenSIPS
                  is starting up a number of TCP processes even though I
                  do not use TCP in my script. I do not even have the
                  proto_tcp module loaded. I used to use the
                  “disable_tcp” global parameter in 1.11, but that has
                  been removed in 2.3.</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt"> </span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 22:03:56 [361]
                  DBG:core:internal_fork: forking new process "SIP
                  receiver TCP"</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 22:03:56 [361]
                  DBG:core:internal_fork: forking new process "SIP
                  receiver TCP"</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 22:03:56 [361]
                  DBG:core:internal_fork: forking new process "SIP
                  receiver TCP"</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 22:03:56 [361]
                  DBG:core:internal_fork: forking new process "SIP
                  receiver TCP"</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 22:03:56 [361]
                  DBG:core:internal_fork: forking new process "SIP
                  receiver TCP"</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 22:03:56 [375]
                  DBG:core:io_watch_add: [TCP_worker] io_watch_add op (3
                  on 53) (0x8d4e80, 3, 1, (nil),1), fd_no=0/209715</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 22:03:56 [361]
                  DBG:core:internal_fork: forking new process "SIP
                  receiver TCP"</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 22:03:56 [361]
                  DBG:core:internal_fork: forking new process "SIP
                  receiver TCP"</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:10.0pt">Feb 21 22:03:56 [361]
                  DBG:core:internal_fork: forking new process "SIP
                  receiver TCP"</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt"> </span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt">Initialization logs:
                </span></span><a href="https://pastebin.com/nsJQGkdy"
                moz-do-not-send="true"><span
                  style="mso-bookmark:_MailOriginalBody"><span
                    style="font-size:11.0pt">https://pastebin.com/nsJQGkdy</span></span><span
                  style="mso-bookmark:_MailOriginalBody"></span></a><span
                style="mso-bookmark:_MailOriginalBody"><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt">Call logs:
                </span></span><a href="https://pastebin.com/vY5crK8U"
                moz-do-not-send="true"><span
                  style="mso-bookmark:_MailOriginalBody"><span
                    style="font-size:11.0pt">https://pastebin.com/vY5crK8U</span></span><span
                  style="mso-bookmark:_MailOriginalBody"></span></a><span
                style="mso-bookmark:_MailOriginalBody"><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt"> </span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt">I also have the core dump if
                  any more information is needed from that.</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt"> </span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt">Thanks,</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt">Ben Newlin</span><o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"> <o:p></o:p></span></p>
            <p class="MsoNormal"><span
                style="mso-bookmark:_MailOriginalBody"><span
                  style="font-size:11.0pt"><br>
                  <br>
                  <br>
                  <br>
                </span><o:p></o:p></span></p>
            <pre><span style="mso-bookmark:_MailOriginalBody">_______________________________________________<o:p></o:p></span></pre>
            <pre><span style="mso-bookmark:_MailOriginalBody">Users mailing list<o:p></o:p></span></pre>
            <pre><span style="mso-bookmark:_MailOriginalBody"></span><a href="mailto:Users@lists.opensips.org" moz-do-not-send="true"><span style="mso-bookmark:_MailOriginalBody">Users@lists.opensips.org</span><span style="mso-bookmark:_MailOriginalBody"></span></a><span style="mso-bookmark:_MailOriginalBody"><o:p></o:p></span></pre>
            <pre><span style="mso-bookmark:_MailOriginalBody"></span><a href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users" moz-do-not-send="true"><span style="mso-bookmark:_MailOriginalBody">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</span><span style="mso-bookmark:_MailOriginalBody"></span></a><span style="mso-bookmark:_MailOriginalBody"><o:p></o:p></span></pre>
          </blockquote>
          <p class="MsoNormal"><span
              style="mso-bookmark:_MailOriginalBody"><span
                style="font-size:11.0pt"><br>
                <br>
                <br>
              </span><o:p></o:p></span></p>
        </blockquote>
        <p class="MsoNormal"><span
            style="mso-bookmark:_MailOriginalBody"><span
              style="font-size:11.0pt"><br>
              <br>
            </span></span><span style="font-size:11.0pt"><o:p></o:p></span></p>
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