assertion failed: (srcleft <= CHARSET_MAX_PENDING_BUF_SIZE)

[Giacomo]

The bug happens not very often, it might need a week to get a core file.


Il giorno ven 21 dic 2018 alle ore 15:18 Aki Tuomi <
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
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://dovecot.org/pipermail/dovecot/attachments/20181221/ba0ed31e/attachment.html>