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    <p>Hello,</p>
    <p>did you run with debug=3 in kamailio.cfg? That piece of code is
      new in 5.1, but executed only when debug is at least 3 (which is
      for troubleshooting purposes, not for production). Anyhow, I will
      check a bit that part to see if anything is wrong there...</p>
    <p>Cheers,<br>
      Daniel<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 30.11.17 18:52, George
      Diamantopoulos wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAPcKEYMBUirqUdRYabjD3V9j6ua+CXxT2e55cRB=8psaqTYeBw@mail.gmail.com">
      <div dir="ltr">
        <div>OK, so I performed a clean installation on a new debian
          stretch instance I haven't been able to reproduce the issue so
          far. Either something changed in the latest nightly, or the
          fact that I upgraded from 5.0.4 was causing the issue.<br>
          <br>
        </div>
        The deployment is automated with ansible, so there shouldn't be
        any deviations in the configuration of the host. Only other
        difference (apart from the clean kamailio install) should be
        rtpengine's building, which was performed anew. However, I don't
        see how that might have affected things (after all, I don't
        believe kamailio is a build time dependency for rtpengine)...<br>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On 30 November 2017 at 01:08, George
          Diamantopoulos <span dir="ltr"><<a
              href="mailto:georgediam@gmail.com" target="_blank"
              moz-do-not-send="true">georgediam@gmail.com</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="ltr">Oh, I also tried with 5.2.0-dev1 nightly and
              it also crashes in the same way...<br>
            </div>
            <div class="HOEnZb">
              <div class="h5">
                <div class="gmail_extra"><br>
                  <div class="gmail_quote">On 30 November 2017 at 01:07,
                    George Diamantopoulos <span dir="ltr"><<a
                        href="mailto:georgediam@gmail.com"
                        target="_blank" moz-do-not-send="true">georgediam@gmail.com</a>></span>
                    wrote:<br>
                    <blockquote class="gmail_quote" style="margin:0 0 0
                      .8ex;border-left:1px #ccc solid;padding-left:1ex">
                      <div dir="ltr">
                        <div>I've been trying to get a core dump on this
                          for hours now, but I just can't get one! Is
                          there anything special needed with this build
                          on debian stretch? Checked ulimits,
                          disable_core_dump, /etc/default/kamailio,
                          started it as root (-u root -g root), from
                          systemd with user kamailio, with working
                          directory set in command line and in config
                          file, I just can't get a core dump...<br>
                          <br>
                        </div>
                        Thanks<br>
                      </div>
                      <div class="m_3315713652689971458HOEnZb">
                        <div class="m_3315713652689971458h5">
                          <div class="gmail_extra"><br>
                            <div class="gmail_quote">On 29 November 2017
                              at 18:10, George Diamantopoulos <span
                                dir="ltr"><<a
                                  href="mailto:georgediam@gmail.com"
                                  target="_blank" moz-do-not-send="true">georgediam@gmail.com</a>></span>
                              wrote:<br>
                              <blockquote class="gmail_quote"
                                style="margin:0 0 0 .8ex;border-left:1px
                                #ccc solid;padding-left:1ex">
                                <div dir="ltr">
                                  <div>
                                    <div>
                                      <div>
                                        <div>
                                          <div>
                                            <div>Hello,<br>
                                              <br>
                                            </div>
                                            I've just installed kamailio
                                            5.1 nightly from the debian
                                            repo for stretch. I didn't
                                            change anything in the
                                            configuration compared to
                                            5.0.4 (which I was testing
                                            previously), apart from the
                                            database structure as found
                                            in the wiki for upgrading
                                            from 5.0.x.<br>
                                            <br>
                                          </div>
                                          Now kamailio crashes after a
                                          while, with the following
                                          output in the logs:<br>
                                          <br>
                                          Nov 29 15:47:05
                                          modcom-sbc-dev1
                                          kamailio[2497]:  3(2502)
                                          ERROR: <core>
                                          [core/udp_server.c:481]:
                                          udp_rcv_loop(): print buffer
                                          building failed<br>
                                          Nov 29 15:47:05
                                          modcom-sbc-dev1
                                          kamailio[2497]: 121(2620)
                                          CRITICAL: <core>
                                          [core/pass_fd.c:277]:
                                          receive_fd(): EOF on 26<br>
                                          Nov 29 15:47:05
                                          modcom-sbc-dev1
                                          kamailio[2497]: 121(2620)
                                          DEBUG: <core>
                                          [core/tcp_main.c:3512]:
                                          handle_ser_child(): dead child
                                          3, pid 2502 (shutting down?)<br>
                                          Nov 29 15:47:05
                                          modcom-sbc-dev1
                                          kamailio[2497]: 121(2620)
                                          DEBUG: <core>
                                          [core/io_wait.h:602]:
                                          io_watch_del(): DBG:
                                          io_watch_del (0x55ae7132ffc0,
                                          26, -1, 0x0) fd_no=126 called<br>
                                          Nov 29 15:47:05
                                          modcom-sbc-dev1
                                          kamailio[2497]:  0(2499)
                                          ALERT: <core>
                                          [main.c:741]: handle_sigs():
                                          child process 2502 exited
                                          normally, status=255<br>
                                          Nov 29 15:47:05
                                          modcom-sbc-dev1
                                          kamailio[2497]:  0(2499) INFO:
                                          <core> [main.c:771]:
                                          handle_sigs(): terminating due
                                          to SIGCHLD<br>
                                          Nov 29 15:47:05
                                          modcom-sbc-dev1
                                          kamailio[2497]:  0(2499)
                                          DEBUG: <core>
                                          [main.c:773]: handle_sigs():
                                          terminating due to SIGCHLD<br>
                                          Nov 29 15:47:05
                                          modcom-sbc-dev1
                                          kamailio[2497]: 118(2617)
                                          INFO: <core>
                                          [main.c:826]: sig_usr():
                                          signal 15 received<br>
                                          <br>
                                        </div>
                                        Let me know if I can somehow
                                        help dissect this issue, I don't
                                        really know where to start.
                                        Thanks.<br>
                                      </div>
                                      <br>
                                    </div>
                                    BR,<br>
                                  </div>
                                  George<br>
                                </div>
                              </blockquote>
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                          </div>
                        </div>
                      </div>
                    </blockquote>
                  </div>
                  <br>
                </div>
              </div>
            </div>
          </blockquote>
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      <br>
      <pre wrap="">_______________________________________________
Kamailio (SER) - Development Mailing List
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</pre>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
Daniel-Constantin Mierla
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a>
Kamailio Advanced Training - <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
Kamailio World Conference - May 14-16, 2018 - <a class="moz-txt-link-abbreviated" href="http://www.kamailioworld.com">www.kamailioworld.com</a></pre>
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