[DBMail 0001056]: IMAPd segfaults using CONDSTORE

The following issue has been SUBMITTED. 
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http://www.dbmail.org/mantis/view.php?id=1056 
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Reported By:                dfroe
Assigned To:                
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Project:                    DBMail
Issue ID:                   1056
Category:                   IMAP daemon
Reproducibility:            sometimes
Severity:                   crash
Priority:                   normal
Status:                     new
target:                      
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Date Submitted:             12-Sep-14 21:22 CEST
Last Modified:              12-Sep-14 21:22 CEST
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Summary:                    IMAPd segfaults using CONDSTORE
Description: 
After upgrading to dbmail 3.2.0 the IMAPd tends to crash often. Sometimes
within a few seconds after restart (depending on how many users are
accessing the server).
Debugging the core dumps shows that
in _ic_status_enter at imapcommands.c:1520
the following line segfaults

self->mailbox->condstore = true;

gdb shows that self->mailbox is NULL.

Maybe a simple check against NULL before accessing the variable could fix
it. On ther other hand I do not know whether it should be possible for
mailbox to be NULL in such a situation.

I worked around this issue by remove CONDSTORE from the capability list
announced by the server to the client. Now I do not notice any crashes
since the clients do not use CONDSTORE anymore.
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Issue History 
Date Modified    Username       Field                    Change               
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12-Sep-14 21:22  dfroe          New Issue                                    
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