assertion failed: (srcleft <= CHARSET_MAX_PENDING_BUF_SIZE)

[Giacomo]

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 <stephan at rename-it.nl>
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
> > <aki.tuomi at open-xchange.com <mailto:aki.tuomi at open-xchange.com>> 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
> >
>
>
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