[asterisk-bugs] [Asterisk 0018944]: Lock on Asterisk 1.6.2.17-rc2

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
====================================================================== 
https://issues.asterisk.org/view.php?id=18944 
====================================================================== 
Reported By:                coliva
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   18944
Category:                   PBX/General
Reproducibility:            random
Severity:                   major
Priority:                   normal
Status:                     acknowledged
Asterisk Version:           SVN 
JIRA:                       SWP-3303 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
====================================================================== 
Date Submitted:             2011-03-09 07:56 CST
Last Modified:              2011-05-03 15:37 CDT
====================================================================== 
Summary:                    Lock on Asterisk 1.6.2.17-rc2
Description: 
At random times, asterisk Stops to process sip packets, all udp packets are
queued as we can see in:

netstat -anp |grep 5060
udp   124904     0 0.0.0.0:5060     0.0.0.0:*     15732/asterisk

It seems to be a lock. We had compiled asterisk with thread debugging, I
will put the info of "core show locks" in additional information, and will
attach a gdb backtracing of all threads.

After this lock, asterisk must be killed to recover the sip channel, we
tried to reload sip and all modules using asteriskcli, but nothing works.
The S.O. is Debian Squeeze, but it seems to be the same in debian Lenny. I
think the same problem is in Asterisk 1.6.2.14, but I can not confirm this
because the machine with this version has no debuging enabled
====================================================================== 

---------------------------------------------------------------------- 
 (0134366) ajbattrick (reporter) - 2011-05-03 15:37
 https://issues.asterisk.org/view.php?id=18944#c134366 
---------------------------------------------------------------------- 
Not Opteron here; it is an Intel Atom:
Intel(R) Atom(TM) CPU  330   @ 1.60GHz


processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 28
model name      :          Intel(R) Atom(TM) CPU  330   @ 1.60GHz
stepping        : 2
cpu MHz         : 1600.116
cache size      : 512 KB
physical id     : 0
siblings        : 4
core id         : 0
cpu cores       : 2
apicid          : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov                                                                       
                 pat clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx
lm constant_tsc pni m                                                      
                                 onitor ds_cpl tm2 ssse3 cx16 xtpr lahf_lm
bogomips        : 3200.23
clflush size    : 64
cache_alignment : 64
address sizes   : 32 bits physical, 48 bits virtual
power management: 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2011-05-03 15:37 ajbattrick     Note Added: 0134366                          
======================================================================