[asterisk-bugs] [Asterisk 0017482]: [patch] [regression] el_gets re-entered after el_end (at shutdown) causes segfault

[Asterisk Bug Tracker]

The following issue has been set as RELATED TO issue 0019369. 
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https://issues.asterisk.org/view.php?id=17482 
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Reported By:                wdoekes
Assigned To:                
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Project:                    Asterisk
Issue ID:                   17482
Category:                   Core/General
Reproducibility:            always
Severity:                   trivial
Priority:                   normal
Status:                     closed
Asterisk Version:           SVN 
JIRA:                       SWP-1671 
Regression:                 Yes 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!): 268572 
Request Review:              
Resolution:                 no change required
Fixed in Version:           
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Date Submitted:             2010-06-07 04:09 CDT
Last Modified:              2011-05-26 01:22 CDT
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Summary:                    [patch] [regression]  el_gets re-entered after
el_end (at shutdown) causes segfault
Description: 
Hi,

when running the asterisk trunk build with -c and -cv respectively, I get
a segfault when hitting CTRL-C on the latter.

The cause is that el_gets (main/editline/read.c) gets re-entered after
el_end has been called in quit_handler (main/asterisk.c). In el_gets, it
trips on

retval = (*el->el_map.func[cmdnum]) (el, ch); // line 475

because el_map.func is NULL (cleaned by el_end).

Possible solution:
- move el_end to after all ast_verbose and ast_debug has been called as in
the attached patch.

A different solution would be to fix so el_gets doesn't get called after
el_end has been called.


Regards,
Walter Doekes
OSSO B.V.
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Relationships       ID      Summary
----------------------------------------------------------------------
has duplicate       0017490 Seg faulting when stopping asterisk
related to          0017080 [patch] Asterisk crashes while core res...
related to          0019369 Invalid read and null pointer deref on ...
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Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2011-05-26 01:22 kobaz          Relationship added       related to 0019369  
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