dovecot - Dec 2011 - Dovecot crash non stop: "uid 0: exited on signal 11"

Hi all,

I have an old physical freebsd 6.2 server running Dovecot 1.0.7. I 
wanted to virtualised it.

So, I did a dd from the physical server and then I restored it on then 
now Virtual Machine.

I booted the server, all services are running just fine excepted Dovecot.

I tried to investigate the log as much as I can but i'm not getting any 
usefull pieces of information. The only entries I have in the log files 
are the following:

/*log: /var/log/messages:*/

/Dec  5 09:53:35 hostname kernel: pid 33815 (imap), uid 0: exited on 
signal 11
Dec  5 09:53:39 hostname kernel: pid 33820 (imap), uid 0: exited on 
signal 11
Dec  5 09:54:22 hostname kernel: pid 33910 (pop3), uid 0: exited on 
signal 11
Dec  5 09:55:22 hostname kernel: pid 34071 (pop3), uid 0: exited on 
signal 11
Dec  5 09:55:47 hostname kernel: pid 34103 (imap), uid 0: exited on 
signal 11
Dec  5 09:56:13 hostname kernel: pid 34143 (pop3), uid 0: exited on 
signal 11
Dec  5 09:56:21 hostname kernel: pid 34164 (pop3), uid 0: exited on 
signal 11
Dec  5 09:56:26 hostname kernel: pid 34180 (imap), uid 0: exited on 
signal 11
Dec  5 09:56:40 hostname kernel: pid 34201 (imap), uid 0: exited on 
signal 11
Dec  5 09:56:49 hostname kernel: pid 34227 (imap), uid 0: exited on 
signal 11/

/*log: /mail/log/dovecot.log:*

dovecot: Dec 05 10:13:46 Info: imap-login: Login: 
user=<test-amaury at mydomain.com>, method=PLAIN, rip=127.0.0.1, 
lip=127.0.0.1, secured
dovecot: Dec 05 10:13:46 Error: child 36621 (imap) killed with signal 11/

I'm also running a squirrelmail as a webmail and here when I refresh a 
folder content 3/5 times I'm getting an error:

/Error: Connection dropped by IMAP server
Query: SELECT "INBOX.Corbeille"/

I'm using Dovecot version 1.0.7 on a freebsd 6.2

and my dovecot.conf is:

dovecot -n

/# 1.0.7: /usr/local/etc/dovecot.conf
base_dir: /mail/
log_path: /mail/log/dovecot.log
protocols: imap pop3
ssl_disable: yes
disable_plaintext_auth: no
login_dir: /mail//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
login_greeting: POP3/IMAP ready.
verbose_proctitle: yes
first_valid_gid: 0
mail_extra_groups: mail
mail_location: maildir:~/Maildir
fsync_disable: yes
maildir_copy_with_hardlinks: 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_plugins(default): quota imap_quota trash
mail_plugins(imap): quota imap_quota trash
mail_plugins(pop3): quota
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
imap_client_workarounds(default): delay-newmail outlook-idle 
netscape-eoh tb-extra-mailbox-sep
imap_client_workarounds(imap): delay-newmail outlook-idle netscape-eoh 
tb-extra-mailbox-sep
imap_client_workarounds(pop3): outlook-idle
pop3_uidl_format(default):
pop3_uidl_format(imap):
pop3_uidl_format(pop3): %08Xu%08Xv
pop3_client_workarounds(default):
pop3_client_workarounds(imap):
pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh
auth default:
   default_realm: tropik.nc
   passdb:
     driver: sql
     args: /usr/local/etc/dovecot-sql.conf
   userdb:
     driver: sql
     args: /usr/local/etc/dovecot-sql.conf
   socket:
     type: listen
     master:
       path: /mail/auth-master
       mode: 384
       user: vmail
       group: vmail
plugin:
   quota: maildir
   trash: /usr/local/etc/dovecot-trash.conf/


Thank you for your help!

Sincerely,

-- 
Amaury Le Pivain
Offratel/Lagoon
Tel: 28.88.99

On 5.12.2011, at 1.17, Amaury Le Pivain wrote:
> I have an old physical freebsd 6.2 server running Dovecot 1.0.7. I wanted
to virtualised it.
> 
> So, I did a dd from the physical server and then I restored it on then now
Virtual Machine.
> 
> I booted the server, all services are running just fine excepted Dovecot.
> 
> I tried to investigate the log as much as I can but i'm not getting any
usefull pieces of information. The only entries I have in the log files are the
following:
> 
> /*log: /var/log/messages:*/
> 
> /Dec  5 09:53:35 hostname kernel: pid 33815 (imap), uid 0: exited on signal
11
This means it crashes. A gdb backtrace might tell why... But I think it would be
less trouble to simply upgrade Dovecot to a newer version (at least v1.2.x)
where there's a good chance that this has already been fixed.