dovecot - Jan 2012 - [Dovecot 2.1] ACL plugin makes imap service crash when using some clients

Hello,

I've just noticed that when Horde is connecting to Dovecot 2.1, it
crashes the imap service if Dovecot is configured to use the ACL plugin.
I'm not sure what's so special about the command Horde sends, but it
shouldn't make Dovecot crash. Everything is fine when using Thunderbird.

Here is the message in Dovecot's logs
"Fatal: master: service(imap): child 89974 killed with signal 11 (core
not dumped)"

The message says that the core is not dumped, even though I did add
drop_priv_before_exec=yes to my config file.

I've tried connecting to the pid using gdb, but the process just hangs
as soon as I'm connected.

Cheers,

Olivier

On 01/18/2012 02:03 AM interfaSys s?rl wrote:
> Hello,
> 
> I've just noticed that when Horde is connecting to Dovecot 2.1, it
> crashes the imap service if Dovecot is configured to use the ACL plugin.
> I'm not sure what's so special about the command Horde sends, but
it
> shouldn't make Dovecot crash. Everything is fine when using
Thunderbird.
> 
> Here is the message in Dovecot's logs
> "Fatal: master: service(imap): child 89974 killed with signal 11 (core
> not dumped)"
> 
> The message says that the core is not dumped, even though I did add
> drop_priv_before_exec=yes to my config file.
dovecot stop
ulimit -c unlimited
dovecot

Now connect with Horde and let it crash.
> I've tried connecting to the pid using gdb, but the process just hangs
> as soon as I'm connected.
> 
continue
[wait for the crash]
bt full
detach
quit


Regards,
Pascal
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