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<tt>Hi Ben,<br>
<br>
How oft<tt>en/<tt>eas<tt>y is to re<tt>produce this crash (i<tt>f
possib<tt>le) ? <tt>Brainstorming</tt> with Razvan, we
suspect a race<tt> <tt>(on the msg s<tt>ave in shmem
in <tt>transaction</tt>)<tt> </tt></tt></tt></tt>betwee<tt>n
the process doing the c<tt>leanup after the async
resume and <tt>the process <tt>running the
failure route <tt>(due th 50<tt>3)<tt>.<br>
<br>
<tt>But this is just a <tt>supposition</tt>,
eventuall<tt>y <tt>yo<tt>u can
validate it or not by remo<tt>ving
the async ??<br>
<br>
<tt>And on the dou<tt>ble ACK
- I'm not 100% it is a
actually a double one, as
the s<tt>econd ha<tt>s a
smaller MF value (6<tt>9,
versus the 70 on <tt>the
f<tt>irst ACK). </tt></tt></tt></tt></tt></tt></tt><br>
</tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt></tt><br>
<tt>Regards,</tt><br>
</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 06/07/2019 03:52 PM, Ben Newlin
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:FAA0A90E-3BB6-41CF-ACD4-DF2634A4AE23@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">Sorry, I
should have thought to actually look at the trace and
examine this call.<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) Yes<o:p></o:p></span></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.<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">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>.<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">One oddity I
saw is that the crashed process appears to send (or at least
siptrace) the ACK twice.<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>Thursday, June 6, 2019 at 11:42 AM<br>
<b>To: </b>OpenSIPS devel mailling list
<a class="moz-txt-link-rfc2396E" href="mailto:devel@lists.opensips.org"><devel@lists.opensips.org></a>, Ben Newlin
<a class="moz-txt-link-rfc2396E" href="mailto:Ben.Newlin@genesys.com"><Ben.Newlin@genesys.com></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""><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>
</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>
<o:p></o:p></span></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>
<o:p></o:p></span></p>
</div>
</blockquote>
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