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Giacomo

2018-Dec-21 12:49 UTC

assertion failed: (srcleft <= CHARSET_MAX_PENDING_BUF_SIZE)

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.
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Aki Tuomi

2018-Dec-21 14:18 UTC

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assertion failed: (srcleft <= CHARSET_MAX_PENDING_BUF_SIZE)

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

Giacomo

2018-Dec-21 15:16 UTC

head link

assertion failed: (srcleft <= CHARSET_MAX_PENDING_BUF_SIZE)

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
>
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