[SR-Users] DRouting cause Kamailio 3.2 to stop

Daniel-Constantin Mierla miconda at gmail.com
Fri Mar 16 18:11:43 CET 2012 

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:miconda at 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:miconda at 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:miconda at gmail.com] 
>> <mailto:[mailto:miconda at 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-bounces at lists.sip-router.org 
>> <mailto:sr-users-bounces at 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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