Upgrade Dovecot from 2.1.17 to 2.2.13 lmtp child killed with signal 6

[Ivan Jurišić]

After upgrade Debian (Wheezy to Jessie) Dovecot version 2.1.17 is
upgraded to 2.2.13.
I have random crash of lmtp-a and I got lot message in queue. Any
solution for this problem?


---------- Postqueue ----------

7A5B77F72B  1160457 Tue Mar 22 10:10:15  ivan at jurisic.org
(delivery temporarily suspended: lost connection with
mail.jurisic.org[private/dovecot-lmtp] while sending end of data --
message may be sent more than once)
                                         ante.starcevic at gmail.com

---------- Log file ----------

Mar 22 10:10:15 lmtp(23497, ivan at jurisic.org): Panic: file fs-api.c:
line 615 (fs_copy): assertion failed: (src->fs == dest->fs)

Mar 22 10:10:15 lmtp(23497, ivan at jurisic.org): Error: Raw backtrace:
/usr/lib/dovecot/libdovecot.so.0(+0x6b6fe) [0x7f7647a8b6fe] ->
/usr/lib/dovecot/libdovecot.so.0(+0x6b7ec) [0x7f7647a8b7ec] ->
/usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f7647a428fb] ->
/usr/lib/dovecot/libdovecot.so.0(fs_copy+0x90) [0x7f7647a4c4a0] ->
/usr/lib/dovecot/libdovecot-storage.so.0(sdbox_copy+0x4e0)
[0x7f7647d3ec10] ->
/usr/lib/dovecot/modules/lib10_quota_plugin.so(+0xbaab) [0x7f764726aaab]
-> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_copy+0x7d)
[0x7f7647d7b01d] ->
/usr/lib/dovecot/libdovecot-lda.so.0(mail_deliver_save+0x196)
[0x7f76480229d6] ->
/usr/lib/dovecot/libdovecot-lda.so.0(mail_deliver+0xf3) [0x7f7648022e13]
-> dovecot/lmtp(+0x6171) [0x7f7648452171] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x3f) [0x7f7647a9cd0f]
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xf9)
[0x7f7647a9dd09] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x9)
[0x7f7647a9cd79] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38)
[0x7f7647a9cdf8] ->
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13)
[0x7f7647a47dc3] -> dovecot/lmtp(main+0x165) [0x7f76484509b5] ->
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f7647696b45]
-> dovecot/lmtp(+0x4a95) [0x7f7648450a95]

Mar 22 10:10:15 lmtp(23497, ivan at jurisic.org): Fatal: master:
service(lmtp): child 23497 killed with signal 6 (core dumps disabled)

---------- Dovecot configuration  ----------

# 2.2.13: /etc/dovecot/dovecot.conf
# OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.3 ext4
auth_mechanisms = plain login
debug_log_path = /var/log/dovecot.debug
default_client_limit = 10000
default_process_limit = 1000
default_vsz_limit = 512 M
dict {
  quota = pgsql:/etc/dovecot/dovecot-dict-sql.conf.ext
}
hostname = mail.jurisic.org
info_log_path = /var/log/dovecot.info
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
listen = *
log_path = /var/log/dovecot.log
mail_attachment_dir = /var/mail/vhosts/%d/attachment
mail_home = /var/mail/vhosts/%d/mail/%n
mail_location = sdbox:/var/mail/vhosts/%d/mail/%n
mail_plugins = " quota"
mail_privileged_group = 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
namespace inbox {
  inbox = yes
  location =
  mailbox Drafts {
    auto = subscribe
    special_use = \Drafts
  }
  mailbox Junk {
    auto = subscribe
    special_use = \Junk
  }
  mailbox Sent {
    auto = subscribe
    special_use = \Sent
  }
  mailbox "Sent Messages" {
    special_use = \Sent
  }
  mailbox Trash {
    auto = subscribe
    special_use = \Trash
  }
  prefix =
}
passdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
plugin {
  autocreate = Sent
  autocreate2 = Drafts
  autocreate3 = Junk
  autocreate4 = Trash
  autosubscribe = Sent
  autosubscribe2 = Drafts
  autosubscribe3 = Junk
  autosubscribe4 = Trash
  expire = Trash
  expire2 = Trash/*
  expire3 = Spam
  expire_dict = proxy::expire
  quota = dict:user::proxy::quota
  quota_rule = *:storage=102400
  quota_warning = storage=75%% quota-warning 75 %u
  quota_warning2 = storage=90%% quota-warning 90 %u
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
}
postmaster_address = postmaster@%d
protocols = " imap lmtp sieve pop3"
service auth-worker {
  user = vmail
}
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0666
    user = postfix
  }
  unix_listener auth-userdb {
    mode = 0600
    user = vmail
  }
  user = dovecot
}
service dict {
  unix_listener dict {
    mode = 0660
    user = vmail
  }
}
service imap-login {
  process_min_avail = 4
  service_count = 0
  vsz_limit = 512 M
}
service imap {
  vsz_limit = 512 M
}
service lmtp {
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postfix
    mode = 0600
    user = postfix
  }
}
service quota-warning {
  executable = script /opt/mail-old.sh
  unix_listener quota-warning {
    group = root
    mode = 0666
    user = root
  }
  user = root
}
ssl = required
ssl_cert = </etc/ssl/jurisic.org/jurisic.pem
ssl_cipher_list =
!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!EDH:!ADH:!DSS:!RC4:HIGH:+3DES
ssl_key = </etc/ssl/jurisic.org/jurisic.key
ssl_prefer_server_ciphers = yes
ssl_protocols = TLSv1 !SSLv2 !SSLv3
userdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
protocol lmtp {
  mail_plugins = " quota sieve"
}
protocol lda {
  mail_plugins = " quota sieve"
}
protocol imap {
  mail_max_userip_connections = 20
  mail_plugins = " quota imap_quota"
}
protocol pop3 {
  mail_max_userip_connections = 20
  mail_plugins = " quota quota"
}