[Dovecot] Segmentation fault in dovecot director lmtp service

[Reinhard Vicinus]

Hi,


    the lmtp service of our dovecot director installation quits with a
    segmentation fault if a lot of mails are simultaneously delivered.
    For example if the postfix mailqueue is filled (for whatever reason)
    and postqueue -f is run the lmtp service quits with a segmentation
    fault:


    Program terminated with signal 11, Segmentation fault.

    #0  o_stream_cork (stream=0x0) at ostream.c:75

    75              if (unlikely(stream->closed))

    (gdb) backtrace

    #0  o_stream_cork (stream=0x0) at ostream.c:75

    #1  0x00007fa6e6af45d9 in lmtp_client_send_more (client=0x2435870)
    at lmtp-client.c:596

    #2  0x0000000002434170 in ?? ()

    #3  0x00000000004070d9 in proxy_send_more (proxy=0x2435870) at
    lmtp-proxy.c:390

    #4  lmtp_proxy_data_input (proxy=0x2435870) at lmtp-proxy.c:444

    #5  0x00007fa6e6af456f in lmtp_client_send_data (client=0x24347a0)
    at lmtp-client.c:306

    #6  0x0000000002434f98 in ?? ()

    #7  0xffffffffe6af73c5 in ?? ()

    #8  0x0000000002434840 in ?? ()

    #9  0x0000000000000000 in ?? ()


    I don't have any ideas why the stream is 0. The configuration of the
    dovecot director installation is attached. Please let me know if i
    shall provide any more information or test something.


    Kind regards

    Reinhard

dovecot -c /etc/dovecot-director/dovecot-director.conf -n
# 2.0.13 (537d4b6d9a7a): /etc/dovecot-director/dovecot-director.conf
# OS: Linux 2.6.32-27-server x86_64 Ubuntu 10.04.1 LTS nfs
auth_verbose = yes
base_dir = /var/run/dovecot-director/
deliver_log_format = director msgid=%m: %$
director_mail_servers = 10.129.3.190-10.129.3.193
director_servers = 10.129.3.193:9090 10.129.3.192:9090 10.129.3.191:9090 
10.129.3.190:9090
info_log_path = /var/log/dovecot-director-debug.log
lmtp_proxy = yes
log_path = /var/log/dovecot-director.log
login_log_format = director %$: %s
mail_debug = yes
mail_gid = vmail
mail_location = mdbox:/mail/dovecot/%d/%n/mail:INDEX=/data/dovecot/%d/%n
mail_log_prefix = "director %s(%u): "
mail_nfs_storage = yes
mail_privileged_group = vmail
mail_uid = vmail
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character 
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy 
include variables body enotify environment mailbox date ihave
passdb {
  args = proxy=y nopassword=y user=%n@dovecottest.%d
  driver = static
}
plugin {
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
}
protocols = imap pop3 lmtp
service auth {
  unix_listener auth-userdb {
    user = dovecot
  }
}
service director {
  fifo_listener login/proxy-notify {
    mode = 0666
  }
  inet_listener {
    port = 9090
  }
  unix_listener director-userdb {
    mode = 0600
  }
  unix_listener login/director {
    mode = 0666
  }
}
service imap-login {
  executable = imap-login director
  inet_listener imap {
    port = 20143
  }
  inet_listener imaps {
    port = 20993
    ssl = yes
  }
}
service lmtp {
  inet_listener lmtp {
    address = *
    port = 20024
  }
}
service pop3-login {
  executable = pop3-login director
  inet_listener pop3 {
    port = 20110
  }
  inet_listener pop3s {
    port = 20995
    ssl = yes
  }
}
ssl_cert = </etc/certs/wildcard.metaways.net.crt
ssl_key = </etc/certs/wildcard.metaways.net.key
protocol lmtp {
  auth_socket_path = director-userdb
  passdb {
    args = proxy=y nopassword=y port=19024
    driver = static
  }
}
protocol imap {
  imap_client_workarounds = delay-newmail
}