Re: [SR-Users] DRouting cause Kamailio 3.2 to stop

Fri, 16 Mar 2012 10:12:48 -0700 

Hello,
finally I had the time to look at the documents you sent. The problem is that you have recursive execution of do_routing("0") from do_routing("0"). 

This happens because you have route[4] like:

route[4] {
  if (!do_routing("0")) {
    send_reply("503", "No Rules matching the URI");
    exit;
  }
}


route[4] is executed from request_route. But then, in database dr_routes 
table, for the prefix 961 you are using for testing, the routeid value 
is 4, meaning that, when do_routing("0") is matching will execute the 
route[4] from the config. Which again is calling do_routing("0") that 
matches again and executes again route[4] and so on ...



At some point the OS kills kamailio, resulting in a crash reported at 
random lines of code -- these were misleading so far, because at some of 
them was an impossible code fault crash condition.


So, remove 4 from routeid column in the database dr_rules table.

Cheers,
Daniel

On 3/2/12 9:57 AM, Daniel-Constantin Mierla wrote:

By the way, in the config you sent in the very first email, you do 
do_routing("0"), but I could not see rules with id 0. Can you add such 
rules or use the id from the rules? Just to see if this is related or 
not, it should not crash even if the id is missing.


Daniel

On 3/1/12 3:52 PM, Fatima Chahrour~Vanrise Support wrote:


Hello,

Full version output is:

debian:/usr/local/etc/kamailio# /usr/local/sbin/kamailio -V

version: kamailio 3.2.2 (i386/linux) 5fc59c


flags: STATS: Off, USE_IPV6, USE_TCP, USE_TLS, TLS_HOOKS, 
USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, 
SHM_MMAP, PKG_MALLOC, DBG_QM_MALLOC, 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_LISTEN 16, 
MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 4MB


poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.

id: 5fc59c

compiled on 06:46:26 Feb 28 2012 with gcc 4.3.2

Thanks in advance.

F.Chahrour

*From:*Daniel-Constantin Mierla [mailto:mico...@gmail.com]
*Sent:* Thursday, March 01, 2012 3:44 PM

*To:* SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - 
Users Mailing List

*Cc:* Fatima Chahrour~Vanrise Support
*Subject:* Re: [SR-Users] DRouting cause Kamailio 3.2 to stop

Hello,


can you send also the full version - -the output of 
'/usr/local/sbin/kamailio -V'



Based on the backtrace, I could not match a valid line in the source 
code that could cause a crash.



Also, you haven't sent the output of 'bt full' -- you sent only from 
'bt', first part just limited number of printed line. Do 'bt full' in 
gdb and sent the output.


Cheers,
Daniel

On 3/1/12 11:02 AM, Fatima Chahrour~Vanrise Support wrote:

Hi Daniel,

Please find output attached.

Waiting your feedback.

Thanks,

F.Chahrour

*From:*Daniel-Constantin Mierla [mailto:mico...@gmail.com]
*Sent:* Thursday, March 01, 2012 11:34 AM

*To:* SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - 
Users Mailing List

*Cc:* Fatima Chahrour~Vanrise Support
*Subject:* Re: [SR-Users] DRouting cause Kamailio 3.2 to stop

Hello,

that's the core file, do:

gdb /usr/local/sbin/kamailio /core

The send out the output from the gdb commands:

bt
bt full

Cheers,
Daniel

On 3/1/12 10:03 AM, Fatima Chahrour~Vanrise Support wrote:

Dear Daniel,

Thanks for your reply..


I'd like to ask you too if my script in my first post that am using 
in the routing area is correct?


I found file named core in the '/' location as you mentioned.


When I open it using #cat core, the opened file go crazy and writes 
strange characters and it ending with the below:



/usr/local/sbin/kamailio-P/var/run/kamailio.pid-f/usr/local/etc/kamailio//kamailio.cfgSSH_AGENT_PID=3234GPG_AGENT_INFO=/tmp/seahorse-jKaZEU/S.gpg-agent:3246:1TERM=xtermDESKTOP_STARTUP_ID=SHELL=/bin/bashGTK_RC_FILES=/etc/gtk/gtkrc:/home/vanrise/.gtkrc-1.2-gnome2WINDOWID=33580848USER=rootGNOME_KEYRING_SOCKET=/tmp/keyring-ZKxFck/socketSSH_AUTH_SOCK=/tmp/keyring-ZKxFck/sshUSERNAME=vanriseSESSION_MANAGER=local/debian:/tmp/.ICE-unix/3188MAIL=/var/mail/rootPATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/DESKTOP_SESSION=defaultGDM_XSERVER_LOCATION=localPWD=/usr/local/etc/kamailioLANG=en_US.UTF-8GDM_LANG=en_US.UTF-8GDMSESSION=defaultSHLVL=4HOME=/rootGNOME_DESKTOP_SESSION_ID=DefaultLOGNAME=rootDBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-sH8atcWdX4,guid=f0dcba443f8fd1d5267161364f4dd99dXDG_DATA_DIRS=/usr/local/share/:/usr/share/:/usrdebian:/# 
62;9;c62;9



Sorry, I've just realized an info that I should mention and would be 
helpful, am running this Kamailio on a debian Lenny VMware as a trial 
before migrating it to its server.


Thank you,

F.Chahrour


*From:*Daniel-Constantin Mierla [mailto:mico...@gmail.com] 
<mailto:[mailto:mico...@gmail.com]>

*Sent:* Thursday, March 01, 2012 10:15 AM

*To:* SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - 
Users Mailing List
*Cc:* Fatima Chahrour~Vanrise Support; 
sr-users-boun...@lists.sip-router.org 
<mailto:sr-users-boun...@lists.sip-router.org>

*Subject:* Re: [SR-Users] DRouting cause Kamailio 3.2 to stop

Hello,


have you found the core file in /var/log/? It is a strange location 
unless you started with -w /var/log. The core file is named usually 
'core' or core.pid (replace pid with same number, like, 'core.1234'). 
The default location in in '/' unless there is a different location 
set via -w or enforced by operating system (e.g., mac os x puts it in 
'/corefiles').


Hope it helps to locate the core file and send the backtrace.

Cheers,
Daniel

On 3/1/12 9:05 AM, Fatima Chahrour~Vanrise Support wrote:

I also tried :  #gdb /usr/local/sbin/kamailio  /var/log/core.file
                          (gdb) bt

And got No Stack..

BR,

F.Chahrour



--
Daniel-Constantin Mierla --http://www.asipto.com
http://linkedin.com/in/miconda  -- http://twitter.com/miconda


--
Daniel-Constantin Mierla
Kamailio Advanced Training, April 23-26, 2012, Berlin, Germany
http://www.asipto.com/index.php/kamailio-advanced-training/


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