[Dovecot] [Dovecot 2.1] imap service crash when using some clients

[Timo Sirainen]

On 13.2.2012, at 2.02, interfaSys sàrl wrote:

> #0  0x00000000105c64e7 in imap_match () from
> /usr/lib/dovecot/libdovecot.so.0
> No symbol table info available.
> #1  0x00000000104b4bf6 in mailbox_list_iter_next () from
> /usr/lib/dovecot/libdovecot-storage.so.0
> No symbol table info available.
> #2  0x0000000000416b99 in cmd_list_continue.6853 ()
> No symbol table info available.
> #3  0x000000000042166d in cmd_list_full ()

This crash looks interesting, but unfortunately the libraries are stripped of debug symbols so I can't really guess why it would crash here. By default Dovecot includes them, so you must have stripped them yourself. Can you get another backtrace with debug symbols enabled?

Or alternatively can you look at what IMAP command Horde sends that crashes Dovecot? http://wiki2.dovecot.org/Debugging/Rawlog shows one way of recording the IMAP traffic.