25 Feb
2019
25 Feb
'19
8:34 p.m.
Hello,
that's strange, but a while ago someone else reported an issue with same
backtrace.
So the crash happens at the last line in the next snippet from
reply_received() function in the tm module:
uac=&t->uac[branch];
LM_DBG("org. status uas=%d, uac[%d]=%d local=%d is_invite=%d)\n",
t->uas.status, branch, uac->last_received,
is_local(t), is_invite(t));
last_uac_status=uac->last_received;
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.
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.
What was the value of debug level you had during the crash (debug
parameter in kamailio.cfg)?
Could there have been any freeze of the operating system for long time
and then a resume?
Can you give the output of command:
uname -a
What kind of linux distro and version you are running?
Cheers,
Daniel
On 25.02.19 15:27, Abdoul Osséni wrote:
Hello,
Please see attached the output of the gdb commands.
Can you check with all core files and see if the backtrace is the same?
--> Yes the backtrace is the same.
Sorry, I use kamailio v5.2
root@sbc:/var/cores# kamailio -V
version: kamailio 5.2.1 (x86_64/linux) cd2583
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
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144 MAX_URI_SIZE
1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: cd2583
compiled on 07:33:25 Jan 31 2019 with gcc 4.9.2
Kamailio is running on a bare metal server.
Thanks
Abdoul
Le lun. 25 févr. 2019 à 14:40, Daniel-Constantin Mierla
<miconda(a)gmail.com <mailto:miconda@gmail.com>> a écrit :
Hello,
can you give the output for next gdb commands:
bt full
info locals
list
Can you check with all core files and see if the backtrace is the
same?
What is the version of Kamailio? Is it running on a bare metal
server or a virtual machine/container?
Cheers,
Daniel
On 25.02.19 14:21, Abdoul Osséni wrote:
--
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com
Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington, DC,
USA -- www.asipto.com
Hello,
Hello dear list,
Today, I have had mutiples crashes. It seems it linked to tm.so
module.
-rw------- 1 root kamailio 4299702272 Feb 25 13:08
core.kamailio.sig11.29204
-rw------- 1 root kamailio 1453023232 Feb 25 13:12
core.kamailio.sig11.29203
-rw------- 1 root kamailio 1416065024 Feb 25 13:12
core.kamailio.sig11.29207
-rw------- 1 root kamailio 4299681792 Feb 25 13:16
core.kamailio.sig11.19047
-rw------- 1 root kamailio 2108506112 Feb 25 13:20
core.kamailio.sig11.19043
-rw------- 1 root kamailio 4299689984 Feb 25 13:34
core.kamailio.sig11.19247
-rw------- 1 root kamailio 4299681792 Feb 25 13:34
core.kamailio.sig11.19246
-rw------- 1 root kamailio 4299698176 Feb 25 13:35
core.kamailio.sig11.19248
-rw------- 1 root kamailio 4299689984 Feb 25 13:35
core.kamailio.sig11.19243
-rw------- 1 root kamailio 4299685888 Feb 25 13:35
core.kamailio.sig11.19244
-rw------- 1 root kamailio 4299689984 Feb 25 13:36
core.kamailio.sig11.19242
root@sbc:/var/cores# gdb /usr/local/sbin/kamailio
core.kamailio.sig11.29204
GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show
copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/local/sbin/kamailio...done.
[New LWP 29204]
warning: .dynamic section for
"/lib/x86_64-linux-gnu/libpthread.so.0" is not at the expected
address (wrong library or version mismatch?)
Warning: couldn't activate thread debugging using libthread_db:
Cannot find new threads: generic error
warning: File "/lib/x86_64-linux-gnu/libthread_db-1.0.so
<http://libthread_db-1.0.so>" auto-loading has been declined by
your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
To enable execution of this file add
add-auto-load-safe-path
/lib/x86_64-linux-gnu/libthread_db-1.0.so
<http://libthread_db-1.0.so>
line to your configuration file "/root/.gdbinit".
To completely disable this security protection add
set auto-load safe-path /
line to your configuration file "/root/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual. E.g., run
from the shell:
info "(gdb)Auto-loading safe path"
warning: Unable to find libthread_db matching inferior's thread
library, thread debugging will not be available.
Warning: couldn't activate thread debugging using libthread_db:
Cannot find new threads: generic error
warning: File "/lib/x86_64-linux-gnu/libthread_db-1.0.so
<http://libthread_db-1.0.so>" auto-loading has been declined by
your `auto-load safe-path' set to "$debugdir:$datadir/auto-load".
warning: Unable to find libthread_db matching inferior's thread
library, thread debugging will not be available.
Core was generated by `/usr/local/sbin/kamailio -P
/var/run/kamailio/kamailio.pid -f /usr/local/etc/ka'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007f68b9bb4515 in reply_received (p_msg=0x7f693ccd5cc8)
at t_reply.c:2240
2240 last_uac_status=uac->last_received;
(gdb)
Any ideas?
Regards
Abdoul
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--
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www.twitter.com/miconda <http://www.twitter.com/miconda> --
www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com
<http://www.kamailioworld.com>
Kamailio Advanced Training - Mar 4-6, 2019 in Berlin; Mar 25-27, 2019, in Washington,
DC, USA -- www.asipto.com <http://www.asipto.com>