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<p class="MsoNormal"><span style="font-size:11.0pt">Hi,<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">We experienced an issue today in our testing environment where OpenSIPS was crashing pretty much constantly. We are investigating some changes we made to our TLS config, but I wanted to also provide some of
the backtraces here. Due to the sheer number of core dumps (over 360) I cannot provide them all, so I tried to take a relative sampling. I expected the backtraces to all be similar but they do appear to be substantially different, although on closer inspection
they may be the same cause. It’s also not clear to me whether any of these crashes are the same as the ones I have already reported.<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">Server 1:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">https://pastebin.com/5gmfd0KU<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">Server 2:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">https://pastebin.com/r8vNdA8W<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">Server 3:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">https://pastebin.com/cyg9F4Z5<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">https://pastebin.com/r4fvLA91<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">Server 4:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">https://pastebin.com/V5MWrUWh<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">https://pastebin.com/FShUNc6z<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"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Ben Newlin </span>
<span style="font-size:11.0pt"><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">Devel <devel-bounces@lists.opensips.org> on behalf of Ben Newlin <Ben.Newlin@genesys.com><br>
<b>Reply-To: </b>OpenSIPS devel mailling list <devel@lists.opensips.org><br>
<b>Date: </b>Tuesday, July 9, 2019 at 5:20 PM<br>
<b>To: </b>OpenSIPS devel mailling list <devel@lists.opensips.org>, Bogdan-Andrei Iancu <bogdan@opensips.org><br>
<b>Subject: </b>Re: [OpenSIPS-Devel] OpenSIPS Crash<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"><span style="font-size:11.0pt">Any updates on this? Would you like me to open a ticket or does one already exist for the issue?</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;color:black">Ben Newlin </span>
<o:p></o:p></p>
</div>
<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">Devel <devel-bounces@lists.opensips.org> on behalf of Ben Newlin <Ben.Newlin@genesys.com><br>
<b>Reply-To: </b>OpenSIPS devel mailling list <devel@lists.opensips.org><br>
<b>Date: </b>Wednesday, June 26, 2019 at 11:58 AM<br>
<b>To: </b>Bogdan-Andrei Iancu <bogdan@opensips.org>, OpenSIPS devel mailling list <devel@lists.opensips.org><br>
<b>Subject: </b>Re: [OpenSIPS-Devel] OpenSIPS Crash</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"><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">I am glad the cause is known at least. :)</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">Is there a ticket I can follow for more information and to be notified of resolution?
</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;color:black">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 <bogdan@opensips.org><br>
<b>Date: </b>Wednesday, June 26, 2019 at 7:37 AM<br>
<b>To: </b>Ben Newlin <Ben.Newlin@genesys.com>, OpenSIPS devel mailling list <devel@lists.opensips.org><br>
<b>Subject: </b>Re: [OpenSIPS-Devel] OpenSIPS Crash</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"><tt><span style="font-size:10.0pt">Thank you Ben,</span></tt><span style="font-size:10.0pt;font-family:"Courier New""><br>
<br>
<tt>This backtrace confirms the initial suspicion - I'm trying to find out a way to get it fixed in a more generic way; what you experience is just one face of the problem (with many faces :P) and there are other related reports.</tt><br>
<br>
<tt>Regards,</tt><br>
<br>
<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="https://www.opensips-solutions.com">https://www.opensips-solutions.com</a><o:p></o:p></pre>
<pre>OpenSIPS Summit 2019<o:p></o:p></pre>
<pre> <a href="https://www.opensips.org/events/Summit-2019Amsterdam/">https://www.opensips.org/events/Summit-2019Amsterdam/</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 06/26/2019 02:34 AM, 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">I have now been able to reproduce this crash reliably, I believe. Please see the backtrace [1]. Is there some other information you would like me to collect when this occurs?</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">[1] <a href="https://pastebin.com/n0Ph8XH5">
https://pastebin.com/n0Ph8XH5</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;color:black">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"><bogdan@opensips.org></a><br>
<b>Date: </b>Friday, June 7, 2019 at 9:15 AM<br>
<b>To: </b>Ben Newlin <a href="mailto:Ben.Newlin@genesys.com"><Ben.Newlin@genesys.com></a>, OpenSIPS devel mailling list
<a href="mailto:devel@lists.opensips.org"><devel@lists.opensips.org></a><br>
<b>Subject: </b>Re: [OpenSIPS-Devel] OpenSIPS Crash</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"><tt><span style="font-size:10.0pt">Hi Ben,</span></tt><span style="font-size:10.0pt;font-family:"Courier New \,serif""><br>
<br>
</span><tt><span style="font-size:10.0pt">How often/easy is to reproduce this crash (if possible) ? Brainstorming with Razvan, we suspect a race (on the msg save in shmem in transaction) between the process doing the cleanup after the async resume and the process
running the failure route (due th 503).</span></tt><span style="font-size:10.0pt;font-family:"Courier New \,serif""><br>
<br>
</span><tt><span style="font-size:10.0pt">But this is just a supposition, eventually you can validate it or not by removing the async ??</span></tt><span style="font-size:10.0pt;font-family:"Courier New \,serif""><br>
<br>
</span><tt><span style="font-size:10.0pt">And on the double ACK - I'm not 100% it is a actually a double one, as the second has a smaller MF value (69, versus the 70 on the first ACK).
</span></tt><span style="font-size:10.0pt;font-family:"Courier New \,serif""><br>
<br>
</span><tt><span style="font-size:10.0pt">Regards,</span></tt><span style="font-size:10.0pt;font-family:"Courier New \,serif""><br>
<br>
<br>
<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="https://www.opensips-solutions.com">https://www.opensips-solutions.com</a><o:p></o:p></pre>
<pre>OpenSIPS Summit 2019<o:p></o:p></pre>
<pre> <a href="https://www.opensips.org/events/Summit-2019Amsterdam/">https://www.opensips.org/events/Summit-2019Amsterdam/</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 06/07/2019 03:52 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">Sorry, I should have thought to actually look at the trace and examine this call.</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">1) Yes</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">2) The Called Party is 10.32.20.60, which is another OpenSIPS instance. The crashed instance received the "503 Service Unavailable" approximately 8-10 ms after sending the INVITE.</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">There is a SIP trace of the exchange here:
<a href="https://pastebin.com/6bttsSVD">https://pastebin.com/6bttsSVD</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">One oddity I saw is that the crashed process appears to send (or at least siptrace) the ACK twice.</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;color:black">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"><bogdan@opensips.org></a><br>
<b>Date: </b>Thursday, June 6, 2019 at 11:42 AM<br>
<b>To: </b>OpenSIPS devel mailling list <a href="mailto:devel@lists.opensips.org">
<devel@lists.opensips.org></a>, Ben Newlin <a href="mailto:Ben.Newlin@genesys.com">
<Ben.Newlin@genesys.com></a><br>
<b>Subject: </b>Re: [OpenSIPS-Devel] OpenSIPS Crash</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"><tt><span style="font-size:10.0pt">Hi Ben,</span></tt><span style="font-size:10.0pt;font-family:"Courier New \,serif""><br>
<br>
</span><tt><span style="font-size:10.0pt">Thanks for "another" report :).</span></tt><span style="font-size:10.0pt;font-family:"Courier New \,serif""><br>
<br>
</span><tt><span style="font-size:10.0pt">Questions:</span></tt><span style="font-size:10.0pt;font-family:"Courier New \,serif""><br>
</span><tt><span style="font-size:10.0pt">1) do you do any async for the INVITE in this crash ?</span></tt><span style="font-size:10.0pt;font-family:"Courier New \,serif""><br>
</span><tt><span style="font-size:10.0pt">2) if it is an YES to (1), is the caller party generating the "503 Service Unavailable" (which triggers the crash) - 10.32.20.60 ?? - a really close (from net delay perspective) and fast to answer party ?</span></tt><span style="font-size:10.0pt;font-family:"Courier New \,serif""><br>
<br>
</span><tt><span style="font-size:10.0pt">Regards,</span></tt><span style="font-size:10.0pt;font-family:"Courier New \,serif""><br>
<br>
<br>
<br>
<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="https://www.opensips-solutions.com">https://www.opensips-solutions.com</a><o:p></o:p></pre>
<pre>OpenSIPS Summit 2019<o:p></o:p></pre>
<pre> <a href="https://www.opensips.org/events/Summit-2019Amsterdam/">https://www.opensips.org/events/Summit-2019Amsterdam/</a><o:p></o:p></pre>
<div>
<p class="MsoNormal">On 06/05/2019 10:02 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">We have had another crash today.</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">Backtrace is here: <a href="https://pastebin.com/q4RQC7kS">
https://pastebin.com/q4RQC7kS</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 found this in the log at the time of the crash:</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">Jun 5 17:54:10 [4978] CRITICAL:core:sig_usr: segfault in process pid: 4978, id: 8</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"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Please let me know if any further information can be useful.</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;color:black">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">Devel
<a href="mailto:devel-bounces@lists.opensips.org"><devel-bounces@lists.opensips.org></a> on behalf of Ben Newlin
<a href="mailto:Ben.Newlin@genesys.com"><Ben.Newlin@genesys.com></a><br>
<b>Reply-To: </b>OpenSIPS devel mailling list <a href="mailto:devel@lists.opensips.org">
<devel@lists.opensips.org></a><br>
<b>Date: </b>Friday, May 10, 2019 at 6:31 PM<br>
<b>To: </b>OpenSIPS devel mailling list <a href="mailto:devel@lists.opensips.org">
<devel@lists.opensips.org></a><br>
<b>Subject: </b>Re: [OpenSIPS-Devel] OpenSIPS Crash</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"><span style="font-size:11.0pt">I found this in the log at the time of the crash:</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">kernel: opensips[5003]: segfault at 30 ip 00007fbd4c8f59d0 sp 00007ffcaa850c80 error 6 in tm.so[7fbd4c887000+8e000]</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;color:black">Ben Newlin </span>
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<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="color:black">From: </span></b><span style="color:black">Devel
<a href="mailto:devel-bounces@lists.opensips.org"><devel-bounces@lists.opensips.org></a> on behalf of Ben Newlin
<a href="mailto:Ben.Newlin@genesys.com"><Ben.Newlin@genesys.com></a><br>
<b>Reply-To: </b>OpenSIPS devel mailling list <a href="mailto:devel@lists.opensips.org">
<devel@lists.opensips.org></a><br>
<b>Date: </b>Friday, May 10, 2019 at 5:44 PM<br>
<b>To: </b>OpenSIPS devel mailling list <a href="mailto:devel@lists.opensips.org">
<devel@lists.opensips.org></a><br>
<b>Subject: </b>[OpenSIPS-Devel] OpenSIPS Crash</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt">Hello,</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">We had a crash today of our OpenSIPS instance.</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">Backtrace is here: </span><a href="https://pastebin.com/QbRJimwx">https://pastebin.com/QbRJimwx</a><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"># opensips -V</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">version: opensips 2.4.5 (x86_64/linux)</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">flags: STATS: On, DISABLE_NAGLE, USE_MCAST, SHM_MMAP, PKG_MALLOC, F_MALLOC, FAST_LOCK-ADAPTIVE_WAIT</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">poll method support: poll, epoll, sigio_rt, select.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">git revision: d025b4f61</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt">main.c compiled on 20:58:31 May 9 2019 with gcc 7</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;color:black">Ben Newlin </span>
<o:p></o:p></p>
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<pre>_______________________________________________<o:p></o:p></pre>
<pre>Devel mailing list<o:p></o:p></pre>
<pre><a href="mailto:Devel@lists.opensips.org">Devel@lists.opensips.org</a><o:p></o:p></pre>
<pre><a href="http://lists.opensips.org/cgi-bin/mailman/listinfo/devel">http://lists.opensips.org/cgi-bin/mailman/listinfo/devel</a><o:p></o:p></pre>
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