[Dovecot] Deliver hangs after reloading the Dovecot configuration

[Pascal Volk]

Hello Timo,

deliver hangs after reloading the Dovecot configuration.

How to reproduce:
 1. start dovecot
 2. deliver a message via deliver
 3. modify dovecot.conf:plugin {quota_rule}
 4. kill -HUP $PID_of_dovecot
 5. deliver the next message via deliver

Dovecot v1.2.beta2 died in this case with a panic:
file dict-process.c: line 152 (dict_listener_input): assertion failed: (listener->processes == NULL)
Raw backtrace: /usr/local/dovecot12/sbin/dovecot [0x411832] 
  -> /usr/local/dovecot12/sbin/dovecot [0x411944] 
  -> /usr/local/dovecot12/sbin/dovecot [0x40acce] 
  -> /usr/local/dovecot12/sbin/dovecot [0x410fc6] 
  -> /usr/local/dovecot12/sbin/dovecot [0x40576a] 
  -> /usr/local/dovecot12/sbin/dovecot [0x414e6b] 
  -> /usr/local/dovecot12/sbin/dovecot [0x414308] 
  -> /usr/local/dovecot12/sbin/dovecot [0x40b29d] 
  -> /lib/libc.so.6(__libc_start_main+0xe6) [0x7f5e508cd5a6] 
  -> /usr/local/dovecot12/sbin/dovecot [0x4032f9]
deliver(j.doe at example.com): May 11 23:30:45 Error: Internal quota calculation error
deliver(j.doe at example.com): May 11 23:30:45 Error: sieve: msgid=<000 at nobody>: failed to store into mailbox 'INBOX': Internal error occurred. Refer to server log for more information. [2009-05-11 23:30:45]

After the panic I have compiled the latest sources 
from the Mercurial repository (changeset: 9021:e36a9edb5fb0).
A full backtrace is attached to this message.

# 1.2.rc3: /usr/local/dovecot12/etc/dovecot.conf
# OS: Linux 2.6.29.2-1 x86_64 Debian squeeze/sid 
log_path: /usr/local/dovecot12/var/log/dovecot.log
protocols: imap
listen: 192.168.111.222:10143
ssl: no 
disable_plaintext_auth: no
login_dir: /usr/local/dovecot12/var/run/dovecot/login
login_executable: /usr/local/dovecot12/libexec/dovecot/imap-login
verbose_proctitle: yes
first_valid_uid: 70000
first_valid_gid: 70000 
mail_privileged_group: mail
mail_location: maildir:~/Maildir
mail_debug: yes
mail_plugins: quota imap_quota
auth default: 
  mechanisms: digest-md5 cram-md5 login plain
  user: nobody
  verbose: yes
  debug: yes
  passdb:
    driver: sql
    args: /usr/local/dovecot12/etc/dovecot-sql.conf
  userdb: 
    driver: sql
    args: /usr/local/dovecot12/etc/dovecot-sql.conf
  socket: 
    type: listen
    master:
      path: /usr/local/dovecot12/var/run/dovecot/auth-master
      mode: 384
plugin:
  quota: dict:user::proxy::quotadict
  quota_rule: *:storage=10M:messages=111
  quota_rule2: Trash:storage=50%%
dict:
  quotadict: pgsql:/usr/local/dovecot12/etc/dovecot-dict-quota.conf
  

/usr/local/dovecot12/etc/dovecot-dict-quota.conf:
connect = host=/var/run/postgresql dbname=db user=user password=password
map {
  pattern = priv/quota/storage
  table = quota12
  username_field = username
  value_field = bytes
}
map {
  pattern = priv/quota/messages
  table = quota12
  username_field = username
  value_field = messages
}


Regards,
Pascal
-- 
The trapper recommends today: beeffeed.0913222 at localdomain.org
.