[asterisk-bugs] [Asterisk 0014920]: Segmentation fault after almost exactly ~ 500 finished SIP over TCP calls.

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
====================================================================== 
http://bugs.digium.com/view.php?id=14920 
====================================================================== 
Reported By:                vrban
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   14920
Category:                   Channels/chan_sip/TCP-TLS
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           SVN 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases):  trunk 
SVN Revision (number only!): 188895 
Request Review:              
====================================================================== 
Date Submitted:             2009-04-16 20:35 CDT
Last Modified:              2009-04-19 19:27 CDT
====================================================================== 
Summary:                    Segmentation fault after almost exactly ~ 500
finished SIP over TCP calls.
Description: 
I reproducibility get a Segmentation fault after almost exactly ~ 500 SIP
over TCP calls.

To ensure this is TCP related i have done the same test with SIP over UDP
-> no crash.


The gdb output:

astmm.c line 132 (__ast_alloc_region): '&reglock' really deep reentrancy!

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb29ffb90 (LWP 13758)]
0x080852be in __ast_pthread_mutex_unlock (filename=0x81b846c "astmm.c",
lineno=135, func=0x81b8759 "__ast_alloc_region", mutex_name=0x81b84d1
"&reglock", 
    t=0x8215560) at
/home/systemvi/src/asterisk-trunk/include/asterisk/lock.h:685
685		if (lt->reentrancy && (lt->thread[lt->reentrancy-1] !=
pthread_self())) {
====================================================================== 

---------------------------------------------------------------------- 
 (0103436) vrban (reporter) - 2009-04-19 19:27
 http://bugs.digium.com/view.php?id=14920#c103436 
---------------------------------------------------------------------- 
ok, i can say now, that this segmentation fault only happen if 
res_timing_pthread.so is loaded. dont know if that also happen with
res_timing_dahdi.so, because i dont have dahdi currently installed on my
test machine. But without res_timing_pthread.so -> no crash even after
10000 calls.

That why there was no crash with 1.6.0 because in 1.6.0
res_timing_pthread.so does not exists. 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-04-19 19:27 vrban          Note Added: 0103436                          
======================================================================