[SR-Users] t_lookup.c: WARNING: script writer didn't release transaction - problem

[Daniel-Constantin Mierla]

Hello,

a crash should not happen no matter what script errors are. Also, the 
log message is a warning. Besides that, the log message is printed by 
process 791 and the process crashed is 796, so the reason can be related 
but not necessary that one.

You got a core file, according to the log message "... core was generated".

Look into '/' folder for 'core' or 'core.796' file and send the backtrace:

gdb /path/to/kamailio /core

bt full

Send the output of the above two commands here. Keep the core file for 
further investigation in case more details are needed.

Cheers,
Daniel


On 3/3/13 4:38 PM, Efelin Novak wrote:
> Hi folks,
>
> we have a serious issue with tm module. In Fail route we would like to
> send a reply 404 when a cr_route function fails(no destination found).
> We use t_reply("404", "No route to destination"). However after the
> call is disconnected with a 404 reply the tm module writes a following
> warning
>
> WARNING: tm [t_lookup.c:1543]: WARNING: script writer didn't release transaction
>
> Very soon after this error message is shown a segfault occurs. Log is
> as follows:
>
> Mar  3 15:26:46 hostname kamailio[791]: ERROR: carrierroute
> [cr_func.c:594]: desired routing domain doesn't exist, prefix
> 0039333333333, carrier 14, domain 2
> Mar  3 15:26:46 hostname kamailio[791]: WARNING: tm [t_lookup.c:1543]:
> WARNING: script writer didn't release transaction
> //ACK is received
> Mar  3 15:26:52 hostname kernel: [771134.093250] kamailio[796]:
> segfault at 4 ip 0815c182 sp bf8ace00 error 6 in
> kamailio[8048000+1ea000]
> Mar  3 15:26:53 hostname kamailio[803]: : <core> [pass_fd.c:293]:
> ERROR: receive_fd: EOF on 15
> Mar  3 15:26:53 hostname kamailio[790]: ALERT: <core> [main.c:785]:
> child process 796 exited by a signal 11
> Mar  3 15:26:53 hostname kamailio[790]: ALERT: <core> [main.c:788]:
> core was generated
> Mar  3 15:26:53 hostname kamailio[790]: INFO: <core> [main.c:800]:
> INFO: terminating due to SIGCHLD
> Mar  3 15:26:53 hostname kamailio[802]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[799]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[801]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[798]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[800]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[797]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[792]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[803]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[795]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[791]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[794]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[793]: INFO: <core> [main.c:851]:
> INFO: signal 15 received
> Mar  3 15:26:53 hostname kamailio[790]: INFO: <core>
> [mem/f_malloc.c:532]: freeing a free fragment (0x886b3ad8/0x886b3ae0)
> - ignore
> Mar  3 15:26:53 hostname kernel: [771135.681720] kamailio[790]:
> segfault at 7dd193e0 ip 0816f5cd sp bf8acc20 error 4 in
> kamailio[8048000+1ea000]
>
> Currently we have fixed it using a custom route
>
> route(T_REPLY);
> .
> .
> .
> route[T_REPLY] {
>      sl_send_reply("404","No route to destination");
> }
>
> This works correctly with no error or a warning message or a segfault.
>
> We are using kamilio version: kamailio 3.3.4 (i386/linux) f8c8f2
>
> Is this behavior a bug or should I dig deeper into the  tm documentation?
>
> Kind regards
>
> Efelin
>
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, April 16-17, 2013, Berlin
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