Panic when runing "doveadm mailbox status ... vsize"

[Mark Costlow]

I'm using dovecot 2.2.24 on FreeBSD 10.3.  I'm working on converting
users from maildir to mdbox, for the usual reasons.

I have converted some test users and they generally work fine.  But
when I run "doveadm mailbox status" I get a Panic if I ask for the
vsize field (or "all"), but other fields work fine. For example:

   # doveadm  mailbox status -u bubbacheex3 "messages" INBOX
   INBOX messages=53

   # doveadm  mailbox status -u bubbacheex3 "guid" INBOX
   INBOX guid=bf976912f3748957761d0100f906a3d0

   # doveadm  mailbox status -u bubbacheex3 "unseen" INBOX
   INBOX unseen=52

   # doveadm  mailbox status -u bubbacheex3 "vsize" INBOX
   doveadm(bubbacheex3): Panic: file file-lock.c: line 269: unreached
   Abort trap

I've only converted a few users, but they all exhibit this problem. 
I converted them with:
  dsync -u bubbacheex3 mirror maildir:/var/tmp/bubbacheex3

I have done a force-resync, which succeeds but doesn't change
the behavior.

I spent a little time trying to get gdb running but didn't
get very far (couldn't seem to get it to find the source files
once I got a few levels deep in the call stack).

Before I beat my head on the gdb issue more, I thought I'd check
here to see if anyone has any ideas.  I didn't turn up anything
in google or searching this list.


Here's my "doveconf -n" output:
------------------------------------------------------
# 2.2.24 (a82c823): /usr/local/etc/dovecot/dovecot.conf
# OS: FreeBSD 10.3-RELEASE-p3 amd64  ufs
auth_failure_delay = 1 secs
auth_mechanisms = plain login
auth_winbind_helper_path = /usr/local/bin/ntlm_auth
auth_worker_max_count = 60
base_dir = /var/run/dovecot/
disable_plaintext_auth = no
first_valid_gid = 100
first_valid_uid = 1000
listen = *
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c
mail_location = mdbox:/var/mail/%u:INDEX=/var/dovecot/%u
mail_log_prefix = "%Us(%u): "
mail_nfs_storage = yes
mail_privileged_group = mail
mdbox_rotate_interval = 1 days
mdbox_rotate_size = 4 M
mmap_disable = yes
namespace {
  inbox = yes
  location = 
  prefix = 
  separator = .
}
passdb {
  args = session=yes dovecot
  driver = pam
}
protocols = imap pop3
service auth {
  unix_listener auth-client {
    mode = 0660
  }
  unix_listener auth-master {
    mode = 0600
  }
  user = root
  vsz_limit = 256 M
}
service imap-login {
  chroot = login
  process_limit = 128
  process_min_avail = 10
  service_count = 1
  user = dovecot
  vsz_limit = 64 M
}
service imap {
  drop_priv_before_exec = no
  process_limit = 512
  vsz_limit = 256 M
}
service pop3-login {
  chroot = login
  process_limit = 128
  process_min_avail = 5
  service_count = 1
  user = dovecot
  vsz_limit = 64 M
}
service pop3 {
  drop_priv_before_exec = no
  process_limit = 512
  vsz_limit = 256 M
}
ssl_cert = </etc/mail/certs/mail.swcp.com.pem
ssl_cipher_list = ALL:!LOW:!SSLv2
ssl_key = </etc/mail/certs/mail.swcp.com.pem
userdb {
  args = blocking=yes
  driver = passwd
}
verbose_proctitle = yes
protocol imap {
  imap_client_workarounds = delay-newmail tb-extra-mailbox-sep
  imap_logout_format = bytes=%i/%o
  imap_max_line_length = 64 k
  mail_max_userip_connections = 20
  mail_plugin_dir = /usr/local/lib/dovecot/imap
}
protocol pop3 {
  mail_max_userip_connections = 10
  mail_plugin_dir = /usr/local/lib/dovecot/pop3
  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
  pop3_enable_last = no
  pop3_lock_session = no
  pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s
  pop3_no_flag_updates = no
  pop3_reuse_xuidl = yes
  pop3_uidl_format = %08Xu%08Xv
}
protocol lda {
  auth_socket_path = /var/run/dovecot/auth-master
  deliver_log_format = msgid=%m: %$
  mail_plugin_dir = /usr/local/lib/dovecot/lda
  postmaster_address = postmaster at swcp.com
  quota_full_tempfail = yes
  rejection_reason = Your message to <%t> was automatically rejected:%n%r
  sendmail_path = /usr/sbin/sendmail
}
------------------------------------------------------

Thanks,

Mark
-- 
Mark Costlow    | Southwest Cyberport | Fax:   +1-505-232-7975
cheeks at swcp.com | Web:   www.swcp.com | Voice: +1-505-232-7992

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