dovecot -2.2.24 on Fedora 31

[Frank Elsner]

On Tue, 12 Nov 2019 09:22:56 +0200 Aki Tuomi via dovecot wrote:
> Hi!
> 
> Can you try follow this guide to get a core dump
> 
> https://www.dovecot.org/bugreport-mail
> 
> then provide
> 
> 
> gdb /usr/lib/dovecot/auth /path/to/core
> 
> bt full

Sorry, I'm not familiar with gdb and can only provide this

# gdb /usr/local/dovecot//libexec/dovecot/auth
GNU gdb (GDB) Fedora 8.3.50.20190824-24.fc31
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
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Reading symbols from /usr/local/dovecot//libexec/dovecot/auth...
(gdb) bt full
No stack.
(gdb) r
Starting program: /usr/local/dovecot/libexec/dovecot/auth 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
__strcmp_ssse3 () at ../sysdeps/x86_64/multiarch/../strcmp.S:173
173             movlpd  (%rdi), %xmm1

> Also doveconf -n could be useful.

Here it is:

# 2.2.36.4 (baf9232c1): /usr/local/dovecot/etc/dovecot/dovecot.conf
# OS: Linux 5.3.8-300.fc31.x86_64 x86_64 Fedora release 31 (Thirty One) ext3
# Hostname: seymour.fritz.box
auth_mechanisms = plain login
default_client_limit = 1024
default_process_limit = 256
default_vsz_limit = 512 M
first_valid_uid = 200
last_valid_uid = 65534
listen = *
lmtp_save_to_detail_mailbox = yes
login_greeting = m28a.ddns.net - IMAPs Service (dovecot) ready.
login_log_format_elements = %u %r %c
mail_location = maildir:/var/spool/mail/%u:LAYOUT=fs
mail_log_prefix = "%Us(%u,%r): "
mail_plugin_dir = /usr/dovecot/lib/dovecot/
mail_plugins = notify quota fts fts_squat acl
namespace inbox {
  inbox = yes
  list = yes
  location = 
  mailbox Drafts {
    special_use = \Drafts
  }
  mailbox Gesendet {
    special_use = \Sent
  }
  mailbox SPAM {
    special_use = \Junk
  }
  mailbox Sent {
    special_use = \Sent
  }
  mailbox Trash {
    special_use = \Trash
  }
  prefix = 
  subscriptions = yes
  type = private
}
passdb {
  args = dovecot
  driver = pam
}
plugin {
  fts = squat
  fts_squat = partial=4 full=10
  mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename flag_change append
  mail_log_fields = uid box from subject msgid size flags
  mail_log_group_events = yes
  quota = maildir:User quota
  quota_rule = ?:storage=5G
  quota_rule2 = Trash:storage=+100M
}
postmaster_address = frank.elsner at mailbox.org
protocols = imap
service anvil {
  client_limit = 1024
}
service auth {
  unix_listener auth-client {
    group = exim
    mode = 0660
    user = exim
  }
}
service imap-login {
  inet_listener imap {
    port = 143
  }
  inet_listener imaps {
    port = 993
    ssl = yes
  }
  process_limit = 512
  process_min_avail = 3
}
service imap-postlogin {
  executable = script-login /usr/local/sbin/dovecot-imap-post-login
}
service imap {
  executable = imap imap-postlogin
  process_limit = 128
}
service pop3-login {
  inet_listener pop3 {
    port = 110
  }
  inet_listener pop3s {
    port = 995
    ssl = yes
  }
}
service pop3 {
  process_limit = 128
}
ssl_cert = </usr/local/etc/m28a.crt
ssl_key =  # hidden, use -P to show it
userdb {
  driver = passwd
}
verbose_proctitle = yes
protocol lmtp {
  mail_plugins = notify quota fts fts_squat acl
}
protocol lda {
  mail_plugins = notify quota fts fts_squat acl
}
protocol imap {
  imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags
  imap_id_log = *
  imap_logout_format = [%i/%o]
  mail_max_userip_connections = 0
  mail_plugins = notify quota fts fts_squat acl quota imap_quota listescape fts fts_squat
}


--Frank