On 18.01.2018 11:32, Thomas Robers wrote: > Hi, > > after updating Dovecot to version 2.3 I get a lot of core-dumps like: > >> Jan 18 10:08:20 mail dovecot: >> imap(b...@tutech.de)<18200><CIPhNwljJcdYS/hg>: Panic: file >> ostream-zlib.c: line 36 (o_stream_zlib_close): assertion failed: >> (zstream->ostream.finished || zstream->ostream.ostream.stream_errno >> != 0) >> Jan 18 10:08:20 mail dovecot: >> imap(b...@tutech.de)<18200><CIPhNwljJcdYS/hg>: Error: Raw backtrace: >> /usr/lib64/dovecot/libdovecot.so.0(+0xc71da) [0x7f9b510c81da] -> >> /usr/lib64/dovecot >> /libdovecot.so.0(+0xc7766) [0x7f9b510c8766] -> >> /usr/lib64/dovecot/libdovecot.so.0(+0x3be11) [0x7f9b5103ce11] -> >> /usr/lib64/dovecot/lib20_zlib_plugin.so(+0x4ffb) [0x7f9b4fc21ffb] -> >> /usr/lib64/dovecot/libdovecot.so.0(+0xed3a6) [0x7f9b510ee3a6] -> >> dovecot/imap(client_disconnect+0x4f) [0x7f9b518f3a1f] -> >> dovecot/imap(cmd_logout+0x5b) [0x7f9b518ede5b] -> >> dovecot/imap(command_exec+0x65) [0x7f9b518f7585] -> >> dovecot/imap(+0x1a7b0) [0x7f9b518f47b0] -> dovecot/imap(+0x1a848) >> [0x7f9b518f4848] -> dovecot/imap(client_handle_input+0x1d5) >> [0x7f9b518f4c35] -> dovecot/imap(client_input+0x6e) [0x7f9b518f517e] >> -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x55) >> [0x7f9b510deec5] -> /usr/lib64/dovecot >> /libdovecot.so.0(io_loop_handler_run_internal+0xbf) [0x7f9b510e0dcf] >> -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x55) >> [0x7f9b510defb5] -> /usr/lib64/dovecot >> /libdovecot.so.0(io_loop_run+0x38) [0x7f9b510df1d8] -> >> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x13) >> [0x7f9b5105eab3] -> dovecot/imap(main+0x33e) [0x7f9b51903cee] -> >> /lib64/libc.so.6(__libc_start_main+0xfd) [0x7f9b50c8bd1d] -> >> dovecot/imap(+0xe339) [0x7f9b518e8339] >> Jan 18 10:08:20 mail dovecot: >> imap(b...@tutech.de)<18200><CIPhNwljJcdYS/hg>: Fatal: master: >> service(imap): child 18200 killed with signal 6 (core dumped) > > > The gdb backtrace is: > > >> gdb /usr/libexec/dovecot/imap /var/core/18200 >> GNU gdb (GDB) Red Hat Enterprise Linux (7.2-92.el6) >> Copyright (C) 2010 Free Software Foundation, Inc. >> License GPLv3+: GNU GPL version 3 or later >> <http://gnu.org/licenses/gpl.html> >> This is free software: you are free to change and redistribute it. >> There is NO WARRANTY, to the extent permitted by law. Type "show >> copying" >> and "show warranty" for details. >> This GDB was configured as "x86_64-redhat-linux-gnu". >> For bug reporting instructions, please see: >> <http://www.gnu.org/software/gdb/bugs/>... >> Reading symbols from /usr/libexec/dovecot/imap...done. >> [New Thread 18200] >> Reading symbols from /usr/lib64/dovecot/libdovecot-storage.so.0...done. >> Loaded symbols for /usr/lib64/dovecot/libdovecot-storage.so.0 >> Reading symbols from /usr/lib64/dovecot/libdovecot.so.0...done. >> Loaded symbols for /usr/lib64/dovecot/libdovecot.so.0 >> Reading symbols from /lib64/libc.so.6...(no debugging symbols >> found)...done. >> Loaded symbols for /lib64/libc.so.6 >> Reading symbols from /lib64/librt.so.1...(no debugging symbols >> found)...done. >> Loaded symbols for /lib64/librt.so.1 >> Reading symbols from /lib64/libdl.so.2...(no debugging symbols >> found)...done. >> Loaded symbols for /lib64/libdl.so.2 >> Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging >> symbols found)...done. >> Loaded symbols for /lib64/ld-linux-x86-64.so.2 >> Reading symbols from /lib64/libpthread.so.0...(no debugging symbols >> found)...done. >> [Thread debugging using libthread_db enabled] >> Loaded symbols for /lib64/libpthread.so.0 >> Reading symbols from /usr/lib64/dovecot/lib01_acl_plugin.so...done. >> Loaded symbols for /usr/lib64/dovecot/lib01_acl_plugin.so >> Reading symbols from /usr/lib64/dovecot/lib02_imap_acl_plugin.so...done. >> Loaded symbols for /usr/lib64/dovecot/lib02_imap_acl_plugin.so >> Reading symbols from /usr/lib64/dovecot/lib15_notify_plugin.so...done. >> Loaded symbols for /usr/lib64/dovecot/lib15_notify_plugin.so >> Reading symbols from /usr/lib64/dovecot/lib20_mail_log_plugin.so...done. >> Loaded symbols for /usr/lib64/dovecot/lib20_mail_log_plugin.so >> Reading symbols from /usr/lib64/dovecot/lib20_zlib_plugin.so...done. >> Loaded symbols for /usr/lib64/dovecot/lib20_zlib_plugin.so >> Reading symbols from /lib64/libz.so.1...(no debugging symbols >> found)...done. >> Loaded symbols for /lib64/libz.so.1 >> Reading symbols from /lib64/libbz2.so.1...(no debugging symbols >> found)...done. >> Loaded symbols for /lib64/libbz2.so.1 >> Reading symbols from >> /usr/lib64/dovecot/lib30_imap_zlib_plugin.so...done. >> Loaded symbols for /usr/lib64/dovecot/lib30_imap_zlib_plugin.so >> Reading symbols from /lib64/libgcc_s.so.1...(no debugging symbols >> found)...done. >> Loaded symbols for /lib64/libgcc_s.so.1 >> Core was generated by `dovecot/imap'. >> Program terminated with signal 6, Aborted. >> #0 0x00007f9b50c9f495 in raise () from /lib64/libc.so.6 >> Missing separate debuginfos, use: debuginfo-install >> dovecot23-2.3.0-3.gf.el6.x86_64 > > > My Dovecot configuration is: > > ---snip--- > # 2.3.0 (c8b89eb): /etc/dovecot/dovecot.conf > # Pigeonhole version 0.5.0.1 (d33dca20) > # OS: Linux 2.6.32-696.3.1.el6.x86_64 x86_64 CentOS release 6.9 > (Final) ext4 > auth_debug = yes > auth_debug_passwords = yes > auth_master_user_separator = * > auth_mechanisms = plain login > auth_verbose = yes > disable_plaintext_auth = no > doveadm_password = # hidden, use -P to show it > doveadm_port = 12345 > imap_max_line_length = 2 M > mail_debug = yes > mail_location = maildir:/export/home/imap/%Lu/Maildir > mail_plugins = acl zlib mail_log notify > mailbox_idle_check_interval = 10 secs > managesieve_notify_capability = mailto > managesieve_sieve_capability = fileinto reject envelope > encoded-character vacation subaddress comparator-i;ascii-numeric > relational regex imap4flags copy include variables body enotify > environment mailbox date index ihave duplicate mime foreverypart > extracttext > namespace { > hidden = no > ignore_on_failure = no > inbox = no > list = children > location = maildir:%%h/Maildir:INDEXPVT=%h/shared/%%u > prefix = shared/%%u/ > separator = / > subscriptions = yes > type = shared > } > namespace inbox { > hidden = no > inbox = yes > list = yes > location = > mailbox Drafts { > special_use = \Drafts > } > mailbox Junk { > special_use = \Junk > } > mailbox Sent { > special_use = \Sent > } > mailbox "Sent Messages" { > special_use = \Sent > } > mailbox Trash { > special_use = \Trash > } > prefix = INBOX/ > separator = / > type = private > } > passdb { > args = /etc/dovecot/master-users > driver = passwd-file > master = yes > } > passdb { > args = /etc/dovecot/dovecot-ldap.conf.ext > driver = ldap > } > plugin { > acl = vfile:/etc/dovecot/global-acls:cache_secs=300 > acl_shared_dict = file:/export/home/shared-db/shared-mailboxes > mail_log_events = append delete undelete expunge copy mailbox_delete > mailbox_rename flag_change > mail_log_fields = uid box msgid size from flags > mail_replica = tcp:mail2.tutech.de > sieve = ~/.dovecot.sieve > sieve_dir = ~/sieve > sieve_global = /var/lib/dovecot/sieve/global/ > sieve_user_log = ~/.dovecot.sieve.log > zlib_save = gz > zlib_save_level = 6 > } > protocols = imap pop3 lmtp sieve sieve > service aggregator { > fifo_listener replication-notify-fifo { > mode = 0666 > user = vmail > } > unix_listener replication-notify { > mode = 0666 > user = vmail > } > } > service auth { > unix_listener /var/spool/postfix/private/auth { > mode = 0666 > } > unix_listener auth-userdb { > group = vmail > mode = 0660 > user = vmail > } > } > service config { > unix_listener config { > user = vmail > } > } > service doveadm { > inet_listener { > port = 12345 > } > user = vmail > } > service imap-login { > inet_listener imaps { > port = 993 > ssl = yes > } > process_limit = 500 > process_min_avail = 20 > } > service imap { > executable = imap > } > service lmtp { > inet_listener lmtp { > address = 127.0.0.1 > port = 24 > } > } > service managesieve-login { > inet_listener sieve { > port = 4190 > } > inet_listener sieve_deprecated { > port = 2000 > } > } > service pop3-login { > inet_listener pop3s { > port = 995 > ssl = yes > } > } > service pop3 { > executable = pop3 > } > service replicator { > unix_listener replicator-doveadm { > mode = 0666 > } > } > ssl = required > ssl_cert = </etc/pki/dovecot/certs/mail.tutech.de.crt_chain > ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL:!EXPORT > ssl_dh = # hidden, use -P to show it > ssl_key = # hidden, use -P to show it > syslog_facility = local6 > userdb { > args = /etc/dovecot/dovecot-ldap-userdb.conf.ext > driver = ldap > } > protocol lmtp { > mail_plugins = acl zlib mail_log notify sieve > } > protocol imap { > mail_max_userip_connections = 100 > mail_plugins = acl zlib mail_log notify imap_zlib imap_acl > rawlog_dir = /tmp/rawlog/%u > } > ---snip--- > > Is this a bug or a misconfiguration? Is it possible to disable the > zlib Plugin? Can Dovecot read the previous compressed e-mails and > will they stay compressed? Thanks for the help! > > Kind regards > Thomas
Hi! This has been recently fixed https://github.com/dovecot/core/commit/23da0fa1b30cc11bcc1d467674a0950c527e9ff1.patch Aki