Typical log message:
Oct 7 11:39:36 hostname dovecot: imap(username): Fatal: master: service(imap):
child 14864 killed with signal 11 (core dumped)
What triggers the problem:
User moving multiple messages to a subfolder via IMAP (from another
account, on another server, client: Thunderbird). Moving single messages
either does not trigger the problem, or with much lower probability
(could not reproduce).
Version:
$ dpkg -l 'dovecot*'
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture
Description
+++-=====================================-=======================-=======================-===============================================================================un
dovecot-common <none> <none>
(no description available)
ii dovecot-core 1:2.2.9-1ubuntu5 amd64
secure POP3/IMAP server - core files
un dovecot-gssapi <none>
<none> (no description available)
ii dovecot-imapd 1:2.2.9-1ubuntu5 amd64
secure POP3/IMAP server - IMAP daemon
un dovecot-ldap <none>
<none> (no description available)
un dovecot-lmtpd <none>
<none> (no description available)
un dovecot-managesieved <none>
<none> (no description available)
un dovecot-mysql <none>
<none> (no description available)
un dovecot-pgsql <none>
<none> (no description available)
un dovecot-pop3d <none>
<none> (no description available)
un dovecot-sieve <none>
<none> (no description available)
un dovecot-solr <none>
<none> (no description available)
un dovecot-sqlite <none>
<none> (no description available)
tamas at szob:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 15.04
Release: 15.04
Codename: vivid
Also tried 2.2.18 from Ubuntu wiley, same results.
Backtrace (I am not sure this is useful, extraced core from Ubuntu's
Apport):
(gdb) bt full
#0 0x00007f404e58e3b6 in mail_index_keywords_unref () from
/usr/lib/dovecot/libdovecot-storage.so.0
No symbol table info available.
#1 0x00007f404ea254ad in _start ()
No symbol table info available.
Any help would be appreciated, I am happy to provide more info if necessary.
Tamas
