<div dir="ltr"><div dir="ltr">Hello,<br><br>The value of debug level I had during the crash is 2.<br>---<br>debug=2<br>---<br><br>I checked from my monitoring tools and system logs if the server has encounter any issue (freeze, network lost, database issues, ...) but I found nothing. <br></div><div dir="ltr"><br></div><div dir="ltr"><div><img src="cid:ii_jslm45842" alt="image.png" style="margin-right: 25px;"><br></div></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr"><div><br></div><div><img src="cid:ii_jsllyyh40" alt="image.png" style="margin-right: 0px;"><br></div></div><div><br></div><div>I use Debian (8.6 default version).<br></div><div><br></div><div><div><img src="cid:ii_jsllzzdh1" alt="image.png" style="margin-right: 0px;"><br></div></div><div>Regards</div><div><br></div><div dir="ltr"><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><span style="font-size:12.8px">Abdoul</span></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Le lun. 25 févr. 2019 à 18:34, Daniel-Constantin Mierla <<a href="mailto:miconda@gmail.com">miconda@gmail.com</a>> a écrit :<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<p>Hello,</p>
<p>that's strange, but a while ago someone else reported an issue
with same backtrace.</p>
<p>So the crash happens at the last line in the next snippet from
reply_received() function in the tm module:</p>
<p> uac=&t->uac[branch];<br>
LM_DBG("org. status uas=%d, uac[%d]=%d local=%d
is_invite=%d)\n",<br>
t->uas.status, branch, uac->last_received,<br>
is_local(t), is_invite(t));<br>
last_uac_status=uac->last_received;<br>
<br>
The backtrace and info locals say that uac is null (0x0).
According to my knowledge, the address of a field in a structure
cannot be null and uac is set to &t->uac[branch]. Moreover,
uac->last_received is printed in the LM_DBG() above the line of
crash, if uac was 0x0, the crash should have happened there.</p>
<p>Then uac is a local variable, so it is on the stack of the
process, in its private memory. There is no other assign or copy
operation between the line of code where the uac is set and the
crash. So overall, should be no race condition there. Either the
kernel was doing something wrong, or maybe the coredump was
somehow corrupted.<br>
</p>
<p>What was the value of debug level you had during the crash (debug
parameter in kamailio.cfg)?</p>
<p>Could there have been any freeze of the operating system for long
time and then a resume?</p>
<p>Can you give the output of command:</p>
<p>uname -a</p>
<p>What kind of linux distro and version you are running?</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div class="gmail-m_92433376961448656moz-cite-prefix">On 25.02.19 15:27, Abdoul Osséni wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">
<div>Hello,</div>
<div><br>
</div>
<div>Please see attached the output of the
gdb commands.</div>
<div><br>
</div>
<div>
<p>Can you check with all core files and see if the
backtrace is the same?</p>
<p>--> Yes the backtrace is the same.</p>
<p>Sorry, I use kamailio v5.2<br>
</p>
<p>root@sbc:/var/cores# kamailio -V<br>
version: kamailio 5.2.1 (x86_64/linux) cd2583<br>
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS,
USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK,
SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC,
TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX,
FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER,
USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES<br>
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144
MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB<br>
poll method support: poll, epoll_lt, epoll_et, sigio_rt,
select.<br>
id: cd2583<br>
compiled on 07:33:25 Jan 31 2019 with gcc 4.9.2<br>
</p>
<p><br>
</p>
<p>Kamailio is running on a bare metal server. <br>
</p>
<p><br>
</p>
</div>
<div>Thanks</div>
<div><br>
</div>
<div dir="ltr">
<div>
<div dir="ltr" class="gmail-m_92433376961448656gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div><span style="font-size:12.8px">Abdoul <br>
</span></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">Le lun. 25 févr. 2019
à 14:40, Daniel-Constantin Mierla <<a href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>>
a écrit :<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<p>Hello,</p>
<p>can you give the output for next gdb commands:</p>
<p>bt full</p>
<p>info locals</p>
<p>list</p>
<p>Can you check with all core files and see if the
backtrace is the same?</p>
<p>What is the version of Kamailio? Is it running on a
bare metal server or a virtual machine/container?</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div class="gmail-m_92433376961448656gmail-m_4771917602702595822moz-cite-prefix">On
25.02.19 14:21, Abdoul Osséni wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">
<div>Hello,</div>
<div><br>
</div>
<div>Hello dear list,<br>
<br>
Today, I have had mutiples crashes. It seems it
linked to tm.so module.<br>
<br>
-rw------- 1 root kamailio 4299702272 Feb 25
13:08 core.kamailio.sig11.29204<br>
-rw------- 1 root kamailio 1453023232 Feb 25
13:12 core.kamailio.sig11.29203<br>
-rw------- 1 root kamailio 1416065024 Feb 25
13:12 core.kamailio.sig11.29207<br>
-rw------- 1 root kamailio 4299681792 Feb 25
13:16 core.kamailio.sig11.19047<br>
-rw------- 1 root kamailio 2108506112 Feb 25
13:20 core.kamailio.sig11.19043<br>
-rw------- 1 root kamailio 4299689984 Feb 25
13:34 core.kamailio.sig11.19247<br>
-rw------- 1 root kamailio 4299681792 Feb 25
13:34 core.kamailio.sig11.19246<br>
-rw------- 1 root kamailio 4299698176 Feb 25
13:35 core.kamailio.sig11.19248<br>
-rw------- 1 root kamailio 4299689984 Feb 25
13:35 core.kamailio.sig11.19243<br>
-rw------- 1 root kamailio 4299685888 Feb 25
13:35 core.kamailio.sig11.19244<br>
-rw------- 1 root kamailio 4299689984 Feb 25
13:36 core.kamailio.sig11.19242<br>
<br>
root@sbc:/var/cores# gdb
/usr/local/sbin/kamailio
core.kamailio.sig11.29204<br>
GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1<br>
Copyright (C) 2014 Free Software Foundation,
Inc.<br>
License GPLv3+: GNU GPL version 3 or later <<a href="http://gnu.org/licenses/gpl.html" target="_blank">http://gnu.org/licenses/gpl.html</a>><br>
This is free software: you are free to change
and redistribute it.<br>
There is NO WARRANTY, to the extent permitted by
law. Type "show copying"<br>
and "show warranty" for details.<br>
This GDB was configured as "x86_64-linux-gnu".<br>
Type "show configuration" for configuration
details.<br>
For bug reporting instructions, please see:<br>
<<a href="http://www.gnu.org/software/gdb/bugs/" target="_blank">http://www.gnu.org/software/gdb/bugs/</a>>.<br>
Find the GDB manual and other documentation
resources online at:<br>
<<a href="http://www.gnu.org/software/gdb/documentation/" target="_blank">http://www.gnu.org/software/gdb/documentation/</a>>.<br>
For help, type "help".<br>
Type "apropos word" to search for commands
related to "word"...<br>
Reading symbols from
/usr/local/sbin/kamailio...done.<br>
[New LWP 29204]<br>
<br>
warning: .dynamic section for
"/lib/x86_64-linux-gnu/libpthread.so.0" is not
at the expected address (wrong library or
version mismatch?)<br>
Warning: couldn't activate thread debugging
using libthread_db: Cannot find new threads:
generic error<br>
<br>
warning: File "/lib/x86_64-linux-gnu/<a href="http://libthread_db-1.0.so" target="_blank">libthread_db-1.0.so</a>"
auto-loading has been declined by your
`auto-load safe-path' set to
"$debugdir:$datadir/auto-load".<br>
To enable execution of this file add<br>
add-auto-load-safe-path
/lib/x86_64-linux-gnu/<a href="http://libthread_db-1.0.so" target="_blank">libthread_db-1.0.so</a><br>
line to your configuration file
"/root/.gdbinit".<br>
To completely disable this security protection
add<br>
set auto-load safe-path /<br>
line to your configuration file
"/root/.gdbinit".<br>
For more information about this security
protection see the<br>
"Auto-loading safe path" section in the GDB
manual. E.g., run from the shell:<br>
info "(gdb)Auto-loading safe path"<br>
<br>
warning: Unable to find libthread_db matching
inferior's thread library, thread debugging will
not be available.<br>
Warning: couldn't activate thread debugging
using libthread_db: Cannot find new threads:
generic error<br>
<br>
warning: File "/lib/x86_64-linux-gnu/<a href="http://libthread_db-1.0.so" target="_blank">libthread_db-1.0.so</a>"
auto-loading has been declined by your
`auto-load safe-path' set to
"$debugdir:$datadir/auto-load".<br>
<br>
warning: Unable to find libthread_db matching
inferior's thread library, thread debugging will
not be available.<br>
Core was generated by `/usr/local/sbin/kamailio
-P /var/run/kamailio/kamailio.pid -f
/usr/local/etc/ka'.<br>
Program terminated with signal SIGSEGV,
Segmentation fault.<br>
#0 0x00007f68b9bb4515 in reply_received
(p_msg=0x7f693ccd5cc8) at t_reply.c:2240<br>
2240
last_uac_status=uac->last_received;<br>
(gdb)<br>
<br>
<br>
Any ideas?<br>
<br>
Regards<br>
<br>
</div>
<div>
<div>
<div dir="ltr" class="gmail-m_92433376961448656gmail-m_4771917602702595822gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div><span style="font-size:12.8px">Abdoul<br>
</span></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<br>
<fieldset class="gmail-m_92433376961448656gmail-m_4771917602702595822mimeAttachmentHeader"></fieldset>
<pre class="gmail-m_92433376961448656gmail-m_4771917602702595822moz-quote-pre">_______________________________________________
Kamailio (SER) - Users Mailing List
<a class="gmail-m_92433376961448656gmail-m_4771917602702595822moz-txt-link-abbreviated" href="mailto:sr-users@lists.kamailio.org" target="_blank">sr-users@lists.kamailio.org</a>
<a class="gmail-m_92433376961448656gmail-m_4771917602702595822moz-txt-link-freetext" href="https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users" target="_blank">https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users</a>
</pre>
</blockquote>
<pre class="gmail-m_92433376961448656gmail-m_4771917602702595822moz-signature" cols="72">--
Daniel-Constantin Mierla -- <a class="gmail-m_92433376961448656gmail-m_4771917602702595822moz-txt-link-abbreviated" href="http://www.asipto.com" target="_blank">www.asipto.com</a>
<a class="gmail-m_92433376961448656gmail-m_4771917602702595822moz-txt-link-abbreviated" href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- <a class="gmail-m_92433376961448656gmail-m_4771917602702595822moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda" target="_blank">www.linkedin.com/in/miconda</a>
Kamailio World Conference - May 6-8, 2019 -- <a class="gmail-m_92433376961448656gmail-m_4771917602702595822moz-txt-link-abbreviated" href="http://www.kamailioworld.com" target="_blank">www.kamailioworld.com</a>
Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- <a class="gmail-m_92433376961448656gmail-m_4771917602702595822moz-txt-link-abbreviated" href="http://www.asipto.com" target="_blank">www.asipto.com</a></pre>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
<pre class="gmail-m_92433376961448656moz-signature" cols="72">--
Daniel-Constantin Mierla -- <a class="gmail-m_92433376961448656moz-txt-link-abbreviated" href="http://www.asipto.com" target="_blank">www.asipto.com</a>
<a class="gmail-m_92433376961448656moz-txt-link-abbreviated" href="http://www.twitter.com/miconda" target="_blank">www.twitter.com/miconda</a> -- <a class="gmail-m_92433376961448656moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda" target="_blank">www.linkedin.com/in/miconda</a>
Kamailio World Conference - May 6-8, 2019 -- <a class="gmail-m_92433376961448656moz-txt-link-abbreviated" href="http://www.kamailioworld.com" target="_blank">www.kamailioworld.com</a>
Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC, USA -- <a class="gmail-m_92433376961448656moz-txt-link-abbreviated" href="http://www.asipto.com" target="_blank">www.asipto.com</a></pre>
</div>
</blockquote></div>