[asterisk-bugs] [Asterisk 0017680]: [patch] chan_skinny crashes asterisk when parking a call

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=17680 
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Reported By:                jmhunter
Assigned To:                
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Project:                    Asterisk
Issue ID:                   17680
Category:                   Channels/chan_skinny
Reproducibility:            always
Severity:                   crash
Priority:                   normal
Status:                     confirmed
Asterisk Version:           SVN 
JIRA:                       SWP-1956 
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!): 278578 
Request Review:              
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Date Submitted:             2010-07-21 17:48 CDT
Last Modified:              2010-07-27 16:36 CDT
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Summary:                    [patch] chan_skinny crashes asterisk when parking a
call
Description: 
I have recently upgraded to Asterisk 1.6, from 1.4, and also acquired a
Cisco 7905 handset - so have now configured chan_skinny for the first time.
This seems to work in the main, apart from when I use the 'Park' softbutton
on the handset, which causes Asterisk to crash. Clearly, this shouldn't
happen!

I can dial the park extension just fine from the handset - it only crashes
if I press the softbutton.

I have checked out the latest SVN and the crash still occurs.

Happy to debug further if somebody can tell me how (I'm not an Asterisk
developer)
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 (0125150) jmhunter (reporter) - 2010-07-27 16:36
 https://issues.asterisk.org/view.php?id=17680#c125150 
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Aha!

I think this is indeed the cause of the crash - an unexpected "user error"
condition we don't currently check for.

I was testing this by picking up the skinny handset, dialling
music-on-hold, and pressing Park (actually, this how I discovered the bug -
by pressing random buttons on my new skinny handset, to work out what they
did)

I have now tested call parking whilst dialling an actual other extension
(my DAHDI test extension) and indeed no crash occurs in this instance.

I don't know enough about Asterisk's internals to work out whether it
should be possible to park a music-on-hold call (dialplan extract below),
or if this is something that can't be done without serious re-engineering.
Either way, I guess we need an additional patch, to check for the presence
of a remote peer before parking (rather than coredumping :-))?

This is my dialplan target that triggers the coredump:
exten => 6001,1,Answer
exten => 6001,n,NoCDR
exten => 6001,n,MusicOnHold()
exten => 6001,n,Wait(60)

Many thanks!! 

Issue History 
Date Modified    Username       Field                    Change               
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2010-07-27 16:36 jmhunter       Note Added: 0125150                          
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