[Dovecot] imap segfaults in dovecot 1.2 on logout

[Bernhard Herzog]

Sascha Wilde <wilde at intevation.de> writes:
> when logging out like
>
> a001 logout
>
> the imap child dies from signal 11.  The back trace looks like this:
>
> Program received signal SIGSEGV, Segmentation fault.
> 0xb7ed4991 in strcasecmp () from /lib/tls/i686/cmov/libc.so.6
> (gdb) bt
> #0  0xb7ed4991 in strcasecmp () from /lib/tls/i686/cmov/libc.so.6
> #1  0x0806ab6c in command_unregister (name=0x815b9ab "LOGOUT") at commands.c:83

Could this be the same issue as the one in 
http://dovecot.org/list/dovecot/2008-October/034211.html ?
If so, it appears to be a bug in the ACL plugin.

I recall having a similar problem with the Annotation plugin.  IIRC it had
something to do with not unregistering commands properly when the plugin
was unloaded.  In that case the array of known commands retains dangling
pointers to the names of the commands that point to the unloaded shared object
file.

  Bernhard

-- 
Bernhard Herzog  |  ++49-541-335 08 30  |  http://www.intevation.de/
Intevation GmbH, Neuer Graben 17, 49074 Osnabrück | AG Osnabrück, HR B 18998
Geschäftsführer: Frank Koormann, Bernhard Reiter, Dr. Jan-Oliver Wagner
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