[Dovecot] Dovecot 1.1alpha2 - (imap) killed with signal 10

[Luca Corti]

As promised, here is the bug report:

# dovecot -n
# 1.1.alpha2: /usr/local/etc/dovecot.conf
protocols: imap pop3
ssl_cert_file: /etc/postfix/server.pem
ssl_key_file: /etc/postfix/server.pem
login_dir: /usr/local/var/run/dovecot/login
login_executable(default): /usr/local/libexec/dovecot/imap-login
login_executable(imap): /usr/local/libexec/dovecot/imap-login
login_executable(pop3): /usr/local/libexec/dovecot/pop3-login
mail_location: maildir:/mnt/shared/mail/%u:INDEX=/var/indexes/%u
mail_drop_priv_before_exec: yes
mail_executable(default): /usr/local/libexec/dovecot/imap
mail_executable(imap): /usr/local/libexec/dovecot/imap
mail_executable(pop3): /usr/local/libexec/dovecot/pop3
mail_plugin_dir(default): /usr/local/lib/dovecot/imap
mail_plugin_dir(imap): /usr/local/lib/dovecot/imap
mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3
auth default:
  passdb:
    driver: pam
  passdb:
    driver: passwd
  userdb:
    driver: passwd
  socket:
    type: listen
    client:
      path: /usr/local/var/run/dovecot/auth-client
      mode: 436
    master:
      path: /usr/local/var/run/dovecot/auth-master
      mode: 384
      user: root
      group: dovecot

#uname -a
Linux ns2 2.6.21-2-sparc64 #1 Thu Jul 12 12:33:00 UTC 2007 sparc64
GNU/Linux

# cat /etc/debian_version 
lenny/sid

Mailstore is NFS mounted, indexes on local disk. I'm upgrading from
dovecot 1.0.3, the client is Evolution. When accessing any directory
besides Inbox I get temporary failure and in the logs I see

Aug  8 01:23:39 ns2 dovecot: child 25167 (imap) killed with signal 10

here is a bt full of the core dump:

GNU gdb 6.4.90-debian
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
details.
This GDB was configured as "sparc-linux-gnu"...Using host libthread_db
library "/lib/libthread_db.so.1".

Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Core was generated by `imap'.
Program terminated with signal 10, Bus error.
#0  mailbox_list_index_sync_write_dir (ctx=0xf75e8, sync_dir=0xf7650,
offset_pos=<value optimized out>, partial=true) at
mailbox-list-index-sync.c:594
594             new_dir->count = nondeleted_count;
(gdb) bt full
#0  mailbox_list_index_sync_write_dir (ctx=0xf75e8, sync_dir=0xf7650,
offset_pos=<value optimized out>, partial=true) at
mailbox-list-index-sync.c:594
        dir = <value optimized out>
        recs = <value optimized out>
        i = <value optimized out>
        j = <value optimized out>
        count = <value optimized out>
        __PRETTY_FUNCTION__ = "mailbox_list_index_sync_write_dir"
#1  0x0007afdc in mailbox_list_index_sync_write (ctx=0xf75e8) at
mailbox-list-index-sync.c:867
        ret = <value optimized out>
#2  0x0007b270 in mailbox_list_index_sync_commit (_ctx=<value optimized
out>) at mailbox-list-index-sync.c:918
        ctx = (struct mailbox_list_index_sync_ctx *) 0xf75e8
        ret = 0
#3  0x00034384 in index_list_sync_deinit (ctx=0xe13f0, status_items=0,
status_r=<value optimized out>) at index-mailbox-list-sync.c:204
        box = (struct mailbox *) 0xe0b98
        list = <value optimized out>
        ilist = <value optimized out>
        view = <value optimized out>
        tmp_status = {messages = 247, recent = 0, unseen = 0,
uidvalidity = 1179084420, uidnext = 248, first_unseen_seq = 0, keywords
= 0x0}
        status = (struct mailbox_status *) 0xffb3d594
        uid = <value optimized out>
        seq = <value optimized out>
#4  0x0007f57c in mailbox_sync_deinit (_ctx=0xffb3d6b4, status_items=0,
status_r=0x0) at mail-storage.c:509
        ctx = (struct mailbox_sync_context *) 0x0
#5  0x0002f078 in imap_sync_nonselected (box=0xe0b98, flags=<value
optimized out>) at imap-sync.c:210
        ctx = (struct mailbox_sync_context *) 0x0
        sync_rec = {seq1 = 4289976032, seq2 = 634052, type = 4289976088}
#6  0x0002745c in _cmd_select_full (cmd=0xd9338, readonly=false) at
cmd-select.c:39
        client = (struct client *) 0xd7840
        storage = (struct mail_storage *) 0xd5de0
        box = (struct mailbox *) 0xe0b98
        status = {messages = 666088, recent = 836034, unseen = 1,
uidvalidity = 585071112, uidnext = 4160102400, first_unseen_seq =
836008, keywords = 0x1e}
        mailbox = 0xdc640 "Archivio.storico.2003"
#7  0x000275f8 in cmd_select (cmd=0xd9338) at cmd-select.c:93
No locals.
#8  0x00028be0 in client_command_input (cmd=0xd9338) at client.c:491
        client = (struct client *) 0xd7840
        __PRETTY_FUNCTION__ = "client_command_input"
#9  0x00028cd0 in client_command_input (cmd=0xd9338) at client.c:548
        command = <value optimized out>
        client = (struct client *) 0xd7840
        __PRETTY_FUNCTION__ = "client_command_input"
#10 0x00029348 in _client_input (client=0xd7840) at client.c:584
        cmd = <value optimized out>
        __PRETTY_FUNCTION__ = "_client_input"
#11 0x00095f10 in io_loop_handler_run (ioloop=<value optimized out>) at
ioloop-epoll.c:201
        ctx = <value optimized out>
        event = (const struct epoll_event *) 0xd4a30
        list = (struct io_list *) 0xd78a8
        io = (struct io_file *) 0xd7490
        tv = {tv_sec = 9, tv_usec = 945402}
        events_count = <value optimized out>
        t_id = 2
        msecs = <value optimized out>
        ret = 1
        i = 0
        call = <value optimized out>
#12 0x00095184 in io_loop_run (ioloop=0xd49b0) at ioloop.c:303
No locals.
#13 0x000311b0 in main (argc=<value optimized out>, argv=0xcc030,
envp=0x0) at main.c:299
No locals.