<p></p>
<h3 dir="auto">Description</h3>
<p dir="auto">While a INVITE is been processed the CANCEL of that transaction is been processed in other process almost at the same time</p>
<h3 dir="auto">Troubleshooting</h3>
<h4 dir="auto">Reproduction</h4>
<p dir="auto">Quite difficult to reproduce I would say</p>
<h4 dir="auto">Debugging Data</h4>
<pre class="notranslate"><code class="notranslate">Reading symbols from /usr/sbin/kamailio...
Reading symbols from /usr/lib/debug/.build-id/e3/9bd8ad0900c980149b00579cce26035c9cb118.debug...
warning: Can't open file /dev/zero (deleted) during file-backed mapping note processing
[New LWP 4136750]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/sbin/kamailio -P /run/kamailio/kamailio.proxy.pid -f /etc/kamailio/proxy/k'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 atomic_dec_and_test_int (var=0x20) at ../../core/parser/../mem/../atomic/atomic_x86.h:222
222 ../../core/parser/../mem/../atomic/atomic_x86.h: No such file or directory.
(gdb) backtrace
#0 atomic_dec_and_test_int (var=0x20) at ../../core/parser/../mem/../atomic/atomic_x86.h:222
0000001 t_unref (p_msg=<optimized out>) at t_lookup.c:1514
#2 0x000055eee962d69b in exec_post_script_cb (msg=msg@entry=0x7f7e265822c8, type=type@entry=REQUEST_CB_TYPE)
at core/script_cb.c:182
0000003 0x000055eee95dfcbe in receive_msg (
buf=buf@entry=0x55eee9a00740 <buf> "INVITE sip:...@fake.dom:5060;transport=udp SIP/2.0\r\nRecord-
Route: <sip:X.X.X.X;r2=on;lr=on;ftag=1E7F0816-6299BCF10003883E-7FFFF700;ngcplb=yes;socket=udp:Y.Y.Y.Y:5060>\r
\nRe"..., len=<optimized out>, rcv_info=rcv_info@entry=0x7ffc96d12af0) at core/receive.c:520
#4 0x000055eee96d4c40 in udp_rcv_loop () at core/udp_server.c:543
#5 0x000055eee94db634 in main_loop () at main.c:1730
#6 0x000055eee94d2d2c in main (argc=<optimized out>, argv=<optimized out>) at main.c:3053
</code></pre>
<h4 dir="auto">Log Messages</h4>
<p dir="auto">Notice that both messages came in the same second ( IPs and numbers have been changed )</p>
<pre class="notranslate"><code class="notranslate">Jun 3 09:49:05 sipwise2-prx03a proxy[4136750]: NOTICE: DEFAULT_ROUTE <script>: New request on proxy - M=INVITE R=«sip:+49......@X.X.X.X
:5060;transport=udp» F=«sip:+49...@fake.dom» T=«sip:+49...@Y.Y.Y.Z» IP=«Y.Y.Y.Z»:«5060» («Y.Y.Y.Y»:«5060»)
ID=«31668-TN-030322e6-0904f8ba1@fake.dom_b2b-1» UA='Cirpack/v4.88 (gw_sip)' DESTIP=«Y.Y.Y.G»:«5062»
</code></pre>
<pre class="notranslate"><code class="notranslate">Jun 3 09:49:05 sipwise2-prx03a proxy[4136755]: NOTICE: DEFAULT_ROUTE <script>: New request on proxy - M=CANCEL R=«sip:+49...@X.X.X.X
:5060;transport=udp» F=«sip:+49...@fake.dom» T=«sip:+49...@Y.Y.Y.Z» IP=«Y.Y.Y.Y»:«5060» («Y.Y.Y.Y»:«5060
») ID=«31668-TN-030322e6-0904f8ba1@fake.dom_b2b-1» UA='<null>' DESTIP=«Z.Z.Z.Z»:«5062»
Jun 3 09:49:05 sipwise2-prx03a proxy[4136755]: NOTICE: DEFAULT_ROUTE <script>: Sending reply S=100 Trying M=CANCEL fs='«Z.Z.Z.Z»:«5062»' du
='«Y.Y.Y.Y»:«5060»' - R=«sip:+49...@X.X.X.X:5060;transport=udp» ID=«31668-TN-030322e6-0904f8ba1@fake.dom_b2b-1» UA='<n
ull>'
</code></pre>
<h3 dir="auto">Additional Information</h3>
<p dir="auto">This is the Sipwise flavor 5.5.1-1+0~mr9.5.3.2</p>
<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />Reply to this email directly, <a href="https://github.com/kamailio/kamailio/issues/3156">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/ABO7UZMNLFL72OHJDSOEI7TVQBHBDANCNFSM5ZIRRXFA">unsubscribe</a>.<br />You are receiving this because you are subscribed to this thread.<img src="https://github.com/notifications/beacon/ABO7UZMBIJRFRO55AVUMMBDVQBHBDA5CNFSM5ZIRRXFKYY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4TAZ5WUA.gif" height="1" width="1" alt="" /><span style="color: transparent; font-size: 0; display: none; visibility: hidden; overflow: hidden; opacity: 0; width: 0; height: 0; max-width: 0; max-height: 0; mso-hide: all">Message ID: <span><kamailio/kamailio/issues/3156</span><span>@</span><span>github</span><span>.</span><span>com></span></span></p>
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