[asterisk-bugs] [Asterisk 0017321]: asterisk sip becomes unresponsive, astobj2.c:115 INTERNAL_OBJ: bad magic number 0x0 for 0x9f0a828

[Asterisk Bug Tracker]

The following issue requires your FEEDBACK. 
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https://issues.asterisk.org/view.php?id=17321 
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Reported By:                steinwej
Assigned To:                
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Project:                    Asterisk
Issue ID:                   17321
Category:                   Channels/chan_sip/General
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.6.0.27 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2010-05-12 01:15 CDT
Last Modified:              2010-05-13 09:19 CDT
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Summary:                    asterisk sip becomes unresponsive, astobj2.c:115
INTERNAL_OBJ: bad magic number 0x0 for 0x9f0a828
Description: 
during dialplan configuration I observed a severe problem:

normal SIP account:

[steinwendtner]
type=friend
md5secret=efe7d3d521f817dsfghdfghdfh319d53da
context=sip_test_context
callerid=01229919640
callingpres=allowed
host=dynamic
mailbox=01229919640 at customer
dtmfmode=inband
canreinvite=no
nat=yes
progressinband=no
language=de
qualify=no
disallow=all
t38pt_udptl=yes,redundancy,maxdatagram=400
allow=alaw

simple dialplan:

[sip_test_context]
exten => 640,1,Hangup


sip ATA dials 640, call gets disconnected as expected (603 declined)
After this, it becomes unresponsive. SIP ATA cannot register anymore.
Sometimes I get tons of:

[May 12 07:55:17] ERROR[29092]: astobj2.c:115 INTERNAL_OBJ: bad magic
number 0x0 for 0x9f0a828
[May 12 07:55:17] ERROR[29092]: astobj2.c:115 INTERNAL_OBJ: bad magic
number 0x0 for 0x9f0a828

sometimes asterisk crashes
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Relationships       ID      Summary
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related to          0016774 [patch] [regression] 1.6.1.13 and 1.6.1...
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---------------------------------------------------------------------- 
 (0121859) lmadsen (administrator) - 2010-05-13 09:19
 https://issues.asterisk.org/view.php?id=17321#c121859 
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If you're getting crashes, please provide the backtrace per
doc/backtrace.txt in your Asterisk source.

Additionally, if you could provide the SIP trace leading up to these
messages, that may also be of use. 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2010-05-13 09:19 lmadsen        Note Added: 0121859                          
2010-05-13 09:19 lmadsen        Status                   new => feedback     
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