Op 9-2-2019 om 19:27 schreef Giacomo via dovecot:
I got a core file this morning.
opening it with gdb I get this:
(gdb) core imap.core
Core was generated by `dovecot/imap'.
Program terminated with signal 6, Aborted.
#0 0x0000000011c1347a in ?? ()
(gdb) bt
#0 0x0000000011c1347a in ?? ()
#1 0x0000000011c13444 in ?? ()
#2 0x0000000000018dee in ?? ()
#3 0x306db139575f3b0d in ?? ()
#4 0x00007fffffffc144 in ?? ()
#5 0x0000000000000000 in ?? ()
Doesn't look clean at all.
That is not that helpful. Did you install debug symbols for Dovecot?
This is usually a separate package. It all depends on your OS. I am not
familiar with FreeBSD.
Regards,
Stephan.
let me know if I should upload the file somewhere.
Thanks
Il giorno lun 21 gen 2019 alle ore 08:52 Giacomo
<[email protected] <mailto:[email protected]>> ha scritto:
I've just enabled core dumps on the involved FreeBSD system. Let's
see if it dumps something..
Il giorno dom 20 gen 2019 alle ore 19:16 Stephan Bosch
<[email protected] <mailto:[email protected]>> ha scritto:
Hi Giacomo,
Op 21/12/2018 om 16:16 schreef Giacomo:
> The bug happens not very often, it might need a week to get
a core file.
Any luck getting a core file?
Regards,
Stephan.
>
>
> Il giorno ven 21 dic 2018 alle ore 15:18 Aki Tuomi
> <[email protected]
<mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>> ha
> scritto:
>
>
> On 21.12.2018 14.49, Giacomo wrote:
> > I'm running the following:
> >
> > # 2.3.4 (0ecbaf23d): /usr/local/etc/dovecot/dovecot.conf
> > # OS: FreeBSD 11.2-RELEASE-p4 amd64
> > # FS: ZFS
> >
> > auth_mechanisms = plain login
> > auth_username_format = %Ln
> > listen = *
> > mail_location = maildir:~/Maildir
> > namespace inbox {
> > inbox = yes
> > location =
> > mailbox Drafts {
> > auto = subscribe
> > special_use = \Drafts
> > }
> > mailbox Junk {
> > auto = subscribe
> > special_use = \Junk
> > }
> > mailbox Sent {
> > special_use = \Sent
> > }
> > mailbox Trash {
> > auto = subscribe
> > special_use = \Trash
> > }
> > prefix =
> > }
> > passdb {
> > driver = pam
> > }
> > protocols = imap lmtp
> > service auth {
> > unix_listener /var/spool/postfix/private/auth {
> > group = postfix
> > mode = 0666
> > user = postfix
> > }
> > user = dovecot
> > }
> > service imap-login {
> > inet_listener imap {
> > port = 0
> > }
> > }
> > service lmtp {
> > unix_listener /var/spool/postfix/private/dovecot-lmtp {
> > group = postfix
> > mode = 0600
> > user = postfix
> > }
> > }
> > service stats {
> > unix_listener stats-reader {
> > group =
> > mode = 0600
> > user =
> > }
> > unix_listener stats-writer {
> > group = $default_internal_group
> > mode = 0666
> > user =
> > }
> > user = $default_internal_user
> > }
> > ssl_cert = </root/cert.pem
> > ssl_key = # hidden, use -P to show it
> > userdb {
> > driver = passwd
> > }
> >
> > dmesg shows:
> >
> > pid 74441 (imap), uid 1002: exited on signal 6
> > pid 74784 (imap), uid 1002: exited on signal 6
> > pid 21471 (imap), uid 1002: exited on signal 6
> > pid 21470 (imap), uid 1002: exited on signal 6
> > pid 21464 (imap), uid 1002: exited on signal 6
> > pid 21731 (imap), uid 1002: exited on signal 6
> >
> > Sometimes the dovecot process serving an user crashes.
He runs
> mostly
> > airmail on macOS and samsung mail on Android.
> >
> > Happens only to that particular user.
> >
> > The log shows the following: (maillog)
> >
> > Dec 16 14:52:35 mail dovecot: imap-login: Login:
user=<USER>,
> > method=PLAIN, rip=79.12.201.157, lip=192.168.1.28,
mpid=74779, TLS,
> > session=<wMQI+iN9VtRPDMmd>
> > Dec 16 14:52:39 mail dovecot:
imap(USER)<74441><nLa+7SN9+fhPDMmd>:
> > Panic: file charset-iconv.c: line 83
(charset_to_utf8_try):
> assertion
> > failed: (srcleft <= CHARSET_MAX_PENDING_BUF_SIZE)
> > Dec 16 14:52:39 mail dovecot:
imap(USER)<74441><nLa+7SN9+fhPDMmd>:
> > Fatal: master: service(imap): child 74441 killed with
signal 6 (core
> > not dumped -
https://dovecot.org/bugreport.html#coredumps - set
> > service imap { drop_priv_before_exec=yes })
> >
> > I'm here if more info is needed.
> >
> > Thanks for taking a look.
>
>
> Can you somehow get a core file and get backtrace from it?
>
>
> Aki
>
