[asterisk-bugs] [Asterisk 0010670]: crash in ast_obj2 (deletion)

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The following issue has been CLOSED 
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http://bugs.digium.com/view.php?id=10670 
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Reported By:                murf
Assigned To:                
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Project:                    Asterisk
Issue ID:                   10670
Category:                   Core-General
Reproducibility:            always
Severity:                   crash
Priority:                   normal
Status:                     closed
Asterisk Version:            SVN 
SVN Branch (only for SVN checkouts, not tarball releases): N/A  
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
Resolution:                 open
Fixed in Version:           
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Date Submitted:             09-07-2007 12:03 CDT
Last Modified:              09-07-2007 13:01 CDT
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Summary:                    crash in ast_obj2 (deletion)
Description: 

What happens: in ao2_ref(),

		/* for safety, zero-out the astobj2 header and also the
		 * first word of the user-data, which we make sure is always
		 * allocated. */
		bzero(obj, sizeof(struct astobj2 *) + sizeof(void *) );
		free(obj);
		ast_atomic_fetchadd_int(&ao2.total_objects, -1);

Freeing the obj is lethal, because it is still referenced by the bucket.