[SR-Users] Kamailio 4.2.8 has crashed

[Daniel-Constantin Mierla]

Hello,

the reason of the crash is a double free, but why it happened is not
clear -- if you want to avoid crashing on double free, you can set
mem_safety=1 .

4.2 is rather old to start digging into its code with a very limited
spare time. Maybe you can try with a newer version and see if you can
reproduce.

Cheers,
Daniel


On 11.04.18 14:32, igor.potjevlesch at gmail.com wrote:
>
> Hello,
>
>  
>
> I had a crash on one Kamailio instance with the following backtrace:
>
>  
>
> Core was generated by `/usr/local/sbin/kamailio -m 704 -M 128 -P
> /run/kamailio/kamailio.pid'.
>
> Program terminated with signal 6, Aborted.
>
> #0  0x00007f92366761f7 in raise () from /lib64/libc.so.6
>
> Missing separate debuginfos, use: debuginfo-install
> bzip2-libs-1.0.6-13.el7.x86_64 elfutils-libelf-0.168-8.el7.x86_64
> glibc-2.17-196.el7_4.2.x86_64 keyutils-libs-1.5.8-3.el7.x86_64
> krb5-libs-1.15.1-8.el7.x86_64 libacl-2.2.51-12.el7.x86_64
> libattr-2.4.46-12.el7.x86_64 libcap-2.22-9.el7.x86_64
> libcom_err-1.42.9-10.el7.x86_64 libdb-5.3.21-21.el7_4.x86_64
> libgcc-4.8.5-16.el7_4.1.x86_64 libselinux-2.5-11.el7.x86_64
> libstdc++-4.8.5-16.el7_4.1.x86_64
> lm_sensors-libs-3.4.0-4.20160601gitf9185e5.el7.x86_64
> lua-5.1.4-15.el7.x86_64 mariadb-libs-5.5.56-2.el7.x86_64
> net-snmp-agent-libs-5.7.2-28.el7_4.1.x86_64
> net-snmp-libs-5.7.2-28.el7_4.1.x86_64 nspr-4.13.1-1.0.el7_3.x86_64
> nss-3.28.4-15.el7_4.x86_64 nss-softokn-freebl-3.28.3-8.el7_4.x86_64
> nss-util-3.28.4-3.el7.x86_64 openssl-libs-1.0.2k-8.el7.x86_64
> pcre-8.32-17.el7.x86_64 perl-libs-5.16.3-292.el7.x86_64
> popt-1.13-16.el7.x86_64 rpm-libs-4.11.3-25.el7.x86_64
> tcp_wrappers-libs-7.6-77.el7.x86_64 xz-libs-5.2.2-1.el7.x86_64
> zlib-1.2.7-17.el7.x86_64
>
> (gdb) backtrace
>
> #0  0x00007f92366761f7 in raise () from /lib64/libc.so.6
>
> #1  0x00007f92366778e8 in abort () from /lib64/libc.so.6
>
> #2  0x000000000061fb2c in qm_free (qm=0x7f91f4eaf000,
> p=0x7f92110d0300, file=0x7f9226dd7072 "dialog: dlg_hash.c",
> func=0x7f9226dd9aeb <__FUNCTION__.12761> "destroy_dlg", line=381) at
> mem/q_malloc.c:474
>
> #3  0x00007f9226d6fb62 in destroy_dlg (dlg=0x7f920f775598) at
> dlg_hash.c:381
>
> #4  0x00007f9226d75681 in dlg_unref (dlg=0x7f920f775598, cnt=2) at
> dlg_hash.c:874
>
> #5  0x00007f9226da14d5 in dlg_ontimeout (tl=0x7f920f7755f8) at
> dlg_handlers.c:1488
>
> #6  0x00007f9226db1e67 in dlg_timer_routine (ticks=8621904, attr=0x0)
> at dlg_timer.c:283
>
> #7  0x00000000004af537 in compat_old_handler (ti=137950479,
> tl=0x7f91f7ad8cc8, data=0x7f91f7ad8cc8) at timer.c:1011
>
> #8  0x00000000004aff14 in slow_timer_main () at timer.c:1145
>
> #9  0x000000000052a2af in main_loop () at main.c:1684
>
> #10 0x000000000052fe71 in main (argc=7, argv=0x7fff51f21418) at
> main.c:2581
>
> (gdb)
>
>  
>
> Is there enough information to understand the reason of the crash?
>
>  
>
> Regards,
>
>  
>
> Igor.
>
>
>
> _______________________________________________
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> sr-users at lists.kamailio.org
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-- 
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - April 16-18, 2018, Berlin - www.asipto.com
Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com

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