[Dovecot] Dovecot 1.1.2, index_mailbox_set_recent_seq crash again

[Andreas M. Kirchwitz]

Hi folks,

after about 3 weeks without any problems, I've found this crash in
yesterday's logfile (again related to index_mailbox_set_recent_seq):

Aug 16 03:39:58 linux dovecot: IMAP(user1): Raw backtrace: imap [0x80cf8e0] -> imap [0x80cf93a] -> imap [0x80cf26c] -> imap [0x809d11a] -> imap(index_mailbox_set_recent_seq+0x3e) [0x809d15e] -> imap(mbox_sync+0x105d) [0x80823fd] -> imap [0x807a454] -> imap(index_transaction_commit+0x4e) [0x809ddfe] -> imap(cmd_copy+0x35f) [0x805b26f] -> imap(cmd_uid+0x59) [0x805f3d9] -> imap [0x805fd7c] -> imap [0x805fe25] -> imap [0x80605e5] -> imap(client_input+0x5e) [0x80607fe] -> imap(io_loop_handler_run+0x100) [0x80d7230] -> imap(io_loop_run+0x28) [0x80d63c8] -> imap(main+0x4a1) [0x8068321] -> /lib/libc.so.6(__libc_start_main+0xe0) [0x149390] -> imap [0x805a101]

I don't know what IMAP operation caused that crash. The client
(Thunderbird 2.0.0.16) silently reconnected without any notification.
No obvious problems since yesterday.

Dovecot 1.1.2 is running on Fedora 8 Linux 32 Bit with all patches
and custom OpenSSL 0.9.8h.

[ output of "dovecot -n" ]
# 1.1.2: /usr/local/dovecot/etc/dovecot.conf
ssl_cert_file: /usr/local/dovecot/etc/dovecot.crt
ssl_key_file: /usr/local/dovecot/etc/dovecot.key
login_dir: /usr/local/dovecot/var/run/dovecot/login
login_executable: /usr/local/dovecot/libexec/dovecot/imap-login
mail_location: mbox:~/Mail:INBOX=/var/spool/mail/%u
auth default:
  mechanisms: plain login digest-md5 cram-md5
  passdb:
    driver: passwd-file
    args: /usr/local/dovecot/etc/dovecot.passwd
  userdb:
    driver: passwd-file
    args: /usr/local/dovecot/etc/dovecot.passwd

	Greetings, Andreas