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<tt>Thank you Ben,<br>
<br>
<tt><tt>This backtrace confirms <tt>the initial <tt>suspicion -
I'm trying to find out <tt>a way to get it fixed in a
more <tt>generic way<tt>; <tt>what you experi<tt>ence
is just <tt>one face of the problem<tt> <tt>(with
many faces :<tt>P)<tt> and</tt> there are
<tt>other <tt>related <tt>repo<tt>rt<tt>s.<br>
<br>
<tt>Regards,</tt><br>
</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></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="https://www.opensips-solutions.com">https://www.opensips-solutions.com</a>
OpenSIPS Summit 2019
<a class="moz-txt-link-freetext" href="https://www.opensips.org/events/Summit-2019Amsterdam/">https://www.opensips.org/events/Summit-2019Amsterdam/</a>
</pre>
<div class="moz-cite-prefix">On 06/26/2019 02:34 AM, Ben Newlin
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:22F024D2-E08B-4C18-BC12-323E33C104DD@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">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?<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">[1] <a
href="https://pastebin.com/n0Ph8XH5"
moz-do-not-send="true">
https://pastebin.com/n0Ph8XH5</a><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">Bogdan-Andrei Iancu
<a class="moz-txt-link-rfc2396E" 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 class="moz-txt-link-rfc2396E" href="mailto:Ben.Newlin@genesys.com"><Ben.Newlin@genesys.com></a>,
OpenSIPS devel mailling list
<a class="moz-txt-link-rfc2396E" href="mailto:devel@lists.opensips.org"><devel@lists.opensips.org></a><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"><tt><span style="font-size:10.0pt">Hi Ben,</span></tt><span
style="font-size:10.0pt;font-family:"Courier
New",serif"><br>
<br>
<tt>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).</tt><br>
<br>
<tt>But this is just a supposition, eventually you can
validate it or not by removing the async ??</tt><br>
<br>
<tt>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).
</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="https://www.opensips-solutions.com" moz-do-not-send="true">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/" moz-do-not-send="true">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"
moz-do-not-send="true">
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"
moz-do-not-send="true"><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"
moz-do-not-send="true">
<devel@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-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>
<tt>Thanks for "another" report :).</tt><br>
<br>
<tt>Questions:</tt><br>
<tt>1) do you do any async for the INVITE in this crash ?</tt><br>
<tt>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 ?</tt><br>
<br>
<tt>Regards,</tt><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" moz-do-not-send="true">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/" moz-do-not-send="true">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"
moz-do-not-send="true">
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"
moz-do-not-send="true"><devel-bounces@lists.opensips.org></a>
on behalf of Ben Newlin
<a href="mailto:Ben.Newlin@genesys.com"
moz-do-not-send="true"><Ben.Newlin@genesys.com></a><br>
<b>Reply-To: </b>OpenSIPS devel mailling list <a
href="mailto:devel@lists.opensips.org"
moz-do-not-send="true">
<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"
moz-do-not-send="true">
<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>
<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"
moz-do-not-send="true"><devel-bounces@lists.opensips.org></a>
on behalf of Ben Newlin
<a href="mailto:Ben.Newlin@genesys.com"
moz-do-not-send="true"><Ben.Newlin@genesys.com></a><br>
<b>Reply-To: </b>OpenSIPS devel mailling list <a
href="mailto:devel@lists.opensips.org"
moz-do-not-send="true">
<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"
moz-do-not-send="true">
<devel@lists.opensips.org></a><br>
<b>Subject: </b>[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">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"
moz-do-not-send="true">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>
<p class="MsoNormal"><span style="font-size:11.0pt"><br>
<br>
<br>
<br>
</span><o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Devel mailing list<o:p></o:p></pre>
<pre><a href="mailto:Devel@lists.opensips.org" moz-do-not-send="true">Devel@lists.opensips.org</a><o:p></o:p></pre>
<pre><a href="http://lists.opensips.org/cgi-bin/mailman/listinfo/devel" moz-do-not-send="true">http://lists.opensips.org/cgi-bin/mailman/listinfo/devel</a><o:p></o:p></pre>
</blockquote>
<p class="MsoNormal"><span style="font-size:11.0pt"><br>
<br>
<br>
</span><o:p></o:p></p>
</blockquote>
<p class="MsoNormal"><span style="font-size:11.0pt"><br>
<br>
<o:p></o:p></span></p>
</div>
</blockquote>
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