[Dovecot] IMAP can't read inbox: istream_raw_mbox_get_body_size assertion failed

[Paul Schreiber]

Yesterday, I upgraded my debian packages from 0.99.14 to 0.99.20050712-2. IMAP service has not been reliable since, and I was seeing crashes with one user.

I tried deleting the user's .subscriptions and .imap folders, and forcing the client (Mac OS X's Mail.app) to redownload everything, but that resulted in an empty inbox.

Here's what I have:

# dpkg -l dovecot*
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name                  Version               Description
+++-=====================-=====================-==========================================================
ii  dovecot               0.99.14-1             dummy package for upgrades to dovecot IMAP and POP3 server
ii  dovecot-common        0.99.20050712-2       secure mail server that supports mbox and maildir mailboxe
ii  dovecot-imapd         0.99.20050712-2       secure IMAP server that supports mbox and maildir mailboxe
ii  dovecot-pop3d         0.99.20050712-2       secure POP3 server that supports mbox and maildir mailboxe

Here's what's in mail.log:

Aug 13 15:09:10 sandbox dovecot: imap-login: Login: stan [70.48.39.107]
Aug 13 15:09:10 sandbox dovecot: IMAP(stan): file istream-raw-mbox.c: line 383 (istream_raw_mbox_get_body_size): assertion failed: (rstream->body_offset != (uoff_t)-1)
Aug 13 15:09:10 sandbox dovecot: child 6748 (imap) killed with signal 6

I got a core dump. Here it is:

# gdb /usr/lib/dovecot/imap core
(gdb) bt full
#0  0x4004d83b in raise () from /lib/tls/libc.so.6
#1  0x4004efa2 in abort () from /lib/tls/libc.so.6
#2  0x08096fcb in i_set_failure_file ()
#3  0x08096ac7 in i_panic ()
#4  0x0807070f in istream_raw_mbox_get_body_size ()
#5  0x0806d1de in mbox_sync_has_changed ()
#6  0x0806eb50 in mbox_sync ()
#7  0x0806f9e7 in mbox_storage_sync_init ()
#8  0x0805ead5 in imap_sync_nonselected ()
#9  0x08057508 in _cmd_select_full ()
#10 0x080576d1 in cmd_select ()
#11 0x08058bf6 in _client_input ()
#12 0x0809c0c1 in io_loop_handler_run ()
#13 0x0809b65b in io_loop_run ()
#14 0x080602aa in main ()

I downgraded to 0.99.14 and put in the old configuration file and it seems to be working now.

What's going on?


Paul