Segfault report
Aki Tuomi
aki.tuomi at open-xchange.com
Wed Dec 26 11:32:51 EET 2018
> On 26 December 2018 at 11:26 Daniel Miller via dovecot <dovecot at dovecot.org> wrote:
>
>
> Ubuntu 18.04, AMD Opteron, Dovecot Version 2.3.3, local file storage. I
> believe it's one of my users checking mail remotely via mobile - don't
> remember if it's an iPhone or Android.
>
> gdb backtrace:
> Reading symbols from /usr/local/libexec/dovecot/imap...done.
> [New LWP 13852]
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
> Core was generated by `dovecot/imap [kkhany at amfes.c'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0 event_want_debug_log (event=event at entry=0x0,
> source_filename=source_filename at entry=0x7efd84178aa3 "mail-storage.c",
> source_linenum=source_linenum at entry=1261) at event-log.c:120
> 120 if (event->forced_debug)
> (gdb) bt full
> #0 event_want_debug_log (event=event at entry=0x0,
> source_filename=source_filename at entry=0x7efd84178aa3 "mail-storage.c",
> source_linenum=source_linenum at entry=1261) at event-log.c:120
> ctx = {type = LOG_TYPE_DEBUG, exit_status = 0, timestamp = 0x0,
> timestamp_usecs = 0, log_prefix = 0x0,
> log_prefix_type_pos = 0}
> #1 0x00007efd83dc0986 in event_want_debug (event=event at entry=0x0,
> source_filename=source_filename at entry=0x7efd84178aa3
> "mail-storage.c", source_linenum=source_linenum at entry=1261)
> at event-log.c:140
> No locals.
> #2 0x00007efd840bf270 in mailbox_open_full
> (box=box at entry=0x55704dc81058, input=input at entry=0x0) at mail-storage.c:1259
> _tmp_event = 0x0
> ret = <optimized out>
> #3 0x00007efd840bf57a in mailbox_open_full (input=0x0,
> box=0x55704dc81058) at mail-storage.c:1368
> ret = <optimized out>
> ret = <optimized out>
> _tmp_event = <optimized out>
> _data_stack_cur_id = <optimized out>
> _data_stack_cur_id = <optimized out>
> #4 mailbox_open (box=0x55704dc81058) at mail-storage.c:1349
> No locals.
> #5 0x000055704c36a31b in select_open (readonly=false,
> mailbox=<optimized out>, ctx=0x55704dc13bc8) at cmd-select.c:288
> client = 0x55704dc11de8
> status = {messages = 1830951344, recent = 32766, unseen =
> 2391910144, uidvalidity = 1475818629, uidnext = 1830951424,
> first_unseen_seq = 32766, first_recent_uid = 1832402502,
> last_cached_seq = 32766, highest_modseq = 0,
> highest_pvt_modseq = 4294967296, keywords = 0x55704dbf1380,
> permanent_flags = 1280910144, flags = 21872,
> permanent_keywords = false, allow_new_keywords = false,
> nonpermanent_modseqs = false, no_modseq_tracking = false,
> have_guids = false, have_save_guids = true, have_only_guid128
> = false}
> flags = <optimized out>
> ---Type <return> to continue, or q <return> to quit---
> ret = 0
> client = <optimized out>
> status = <optimized out>
> flags = <optimized out>
> ret = <optimized out>
> #6 cmd_select_full (cmd=<optimized out>, readonly=<optimized out>) at
> cmd-select.c:417
> client = 0x55704dc11de8
> ctx = <optimized out>
> args = 0x55704dbef690
> list_args = 0x5d0000006e
> mailbox = 0x55704dbe1540 "shared"
> error = 0x55704dc11de8 ""
> ret = <optimized out>
> __func__ = "cmd_select_full"
> #7 0x000055704c371e30 in command_exec (cmd=cmd at entry=0x55704dc13a38) at
> imap-commands.c:201
> hook = 0x55704dbeb0f0
> finished = <optimized out>
> __func__ = "command_exec"
> #8 0x000055704c3701d2 in client_command_input (cmd=<optimized out>,
> cmd at entry=0x55704dc13a38) at imap-client.c:1152
> client = 0x55704dc11de8
> command = <optimized out>
> __func__ = "client_command_input"
> #9 0x000055704c370274 in client_command_input (cmd=<optimized out>) at
> imap-client.c:1215
> client = 0x55704dc11de8
> command = <optimized out>
> __func__ = "client_command_input"
> #10 0x000055704c370675 in client_handle_next_command
> (remove_io_r=<synthetic pointer>, client=0x55704dc11de8) at
> imap-client.c:1257
> ---Type <return> to continue, or q <return> to quit---
> No locals.
> #11 client_handle_input (client=0x55704dc11de8) at imap-client.c:1271
> _data_stack_cur_id = 3
> ret = <optimized out>
> remove_io = false
> ret = <optimized out>
> remove_io = <optimized out>
> client = 0x55704dc11de8
> handled_commands = <optimized out>
> _data_stack_cur_id = <optimized out>
> ret = <optimized out>
> remove_io = <optimized out>
> _data_stack_cur_id = <optimized out>
> #12 0x000055704c370ccc in client_input (client=0x55704dc11de8) at
> imap-client.c:1317
> cmd = 0x55704dc0bcb0
> output = 0x55704dc2d150
> bytes = 17
> __func__ = "client_input"
> #13 0x00007efd83ddae0f in io_loop_call_io (io=0x55704dc13910) at
> ioloop.c:698
> ioloop = 0x55704dbe9ee0
> t_id = 2
> __func__ = "io_loop_call_io"
> #14 0x00007efd83ddc7c6 in io_loop_handler_run_internal
> (ioloop=ioloop at entry=0x55704dbe9ee0) at ioloop-epoll.c:221
> ctx = 0x55704dbedc00
> events = <optimized out>
> event = <optimized out>
> list = 0x55704dc13970
> ---Type <return> to continue, or q <return> to quit---
> io = <optimized out>
> tv = {tv_sec = 1799, tv_usec = 999365}
> events_count = <optimized out>
> msecs = <optimized out>
> ret = <optimized out>
> i = 0
> j = <optimized out>
> call = <optimized out>
> __func__ = "io_loop_handler_run_internal"
> #15 0x00007efd83ddaf1c in io_loop_handler_run (ioloop=<optimized out>)
> at ioloop.c:750
> No locals.
> #16 0x00007efd83ddb138 in io_loop_run (ioloop=0x55704dbe9ee0) at
> ioloop.c:723
> __func__ = "io_loop_run"
> #17 0x00007efd83d50873 in master_service_run (service=0x55704dbe9d70,
> callback=<optimized out>) at master-service.c:775
> No locals.
> #18 0x000055704c362611 in main (argc=<optimized out>, argv=<optimized
> out>) at main.c:521
> set_roots = {0x55704c5909a0 <smtp_submit_setting_parser_info>,
> 0x55704c5906c0 <imap_setting_parser_info>, 0x0}
> login_set = {auth_socket_path = 0x55704dbe12a8 "\340\022\276MpU",
> postlogin_socket_path = 0x55704dbe12f0 "m 174.237.3.103
> SELECT]", postlogin_timeout_secs = 60,
> callback = 0x55704c37ed60 <login_client_connected>,
> failure_callback = 0x55704c37e530 <login_client_failed>,
> request_auth_token = true}
> service_flags = <optimized out>
> storage_service_flags = <optimized out>
> username = 0x0
> auth_socket_path = <optimized out>
> c = <optimized out>
> error = 0x0
>
> doveconf -n:
>
> # 2.3.3 (dcead646b): /usr/local/etc/dovecot/dovecot.conf
> # Pigeonhole version 0.5.3 (f018bbab)
> # OS: Linux 4.15.0-43-generic x86_64 Ubuntu 18.04.1 LTS
> # Hostname: bubba.amfes.lan
> auth_cache_size = 4 k
> auth_master_user_separator = *
> auth_mechanisms = plain login
> default_login_user = nobody
> default_vsz_limit = 1 G
> dict {
> acl = mysql:/usr/local/etc/dovecot/dovecot-dict-sql.conf.ext
> }
> disable_plaintext_auth = no
> imap_client_workarounds = tb-extra-mailbox-sep
> imap_idle_notify_interval = 29 mins
> listen = *
> mail_attachment_hash = %{sha512}
> mail_plugins = fts fts_solr acl zlib virtual
> mail_prefetch_count = 10
> mail_shared_explicit_inbox = yes
> 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 inbox {
> hidden = no
> inbox = yes
> list = yes
> location =
> mailbox "Deleted Messages" {
> auto = no
> autoexpunge = 30 days
> special_use = \Trash
> }
> mailbox Drafts {
> auto = subscribe
> special_use = \Drafts
> }
> mailbox INBOX/Archives {
> auto = no
> special_use = \Archive
> }
> mailbox Sent {
> auto = subscribe
> special_use = \Sent
> }
> mailbox "Sent Items" {
> auto = no
> special_use = \Sent
> }
> mailbox "Sent Messages" {
> auto = no
> special_use = \Sent
> }
> mailbox Trash {
> auto = subscribe
> autoexpunge = 30 days
> special_use = \Trash
> }
> mailbox virtual/Flagged {
> comment = All my flagged messages
> special_use = \Flagged
> }
> prefix =
> separator = /
> subscriptions = yes
> type = private
> }
> namespace usershares {
> list = children
> location = sdbox:/var/mail/%%d/%%n/sdbox
> prefix = shared/%%n/
> separator = /
> subscriptions = no
> type = shared
> }
> namespace virtual {
> list = children
> location = virtual:/var/mail/%d/%n/virtual
> prefix = virtual/
> separator = /
> subscriptions = no
> }
> passdb {
> args = /usr/local/etc/dovecot/master-users
> driver = passwd-file
> master = yes
> }
> passdb {
> args = /usr/local/etc/dovecot/dovecot-ldap.conf.ext
> driver = ldap
> }
> plugin {
> acl = vfile:/usr/local/etc/dovecot/global-acls:cache_secs=300
> acl_shared_dict = proxy::acl
> fts = solr
> fts_autoindex = yes
> fts_solr = break-imap-search url=http://127.0.0.1:8983/solr/dovecot/
> mailbox_alias_new = Sent Messages
> mailbox_alias_new2 = Sent Items
> mailbox_alias_new3 = Deleted Messages
> mailbox_alias_old = Sent
> mailbox_alias_old2 = Sent
> mailbox_alias_old3 = Trash
> sieve = file:~/sieve;active=~/.dovecot.sieve
> }
> protocols = imap lmtp sieve
> service auth {
> unix_listener /var/spool/postfix/private/auth {
> group = postfix
> mode = 0660
> user = postfix
> }
> unix_listener auth-userdb {
> group = mail
> mode = 0600
> user = vmail
> }
> }
> service dict {
> unix_listener dict {
> group = mail
> mode = 0660
> user = vmail
> }
> }
> service imap-login {
> process_min_avail = 10
> service_count = 1
> }
> service imap-postlogin {
> executable = script-login /usr/local/etc/dovecot/post-login.sh
> user = $default_internal_user
> }
> service imap {
> executable = imap imap-postlogin
> }
> service lmtp {
> process_min_avail = 5
> unix_listener /var/spool/postfix/private/dovecot-lmtp {
> group = mail
> mode = 0666
> user = vmail
> }
> }
> service managesieve-login {
> inet_listener sieve {
> port = 4190
> }
> inet_listener sieve_deprecated {
> port = 2000
> }
> process_min_avail = 0
> service_count = 1
> }
> ssl_cert = </etc/letsencrypt/live/mail.amfes.com/fullchain.pem
> ssl_dh = # hidden, use -P to show it
> ssl_key = # hidden, use -P to show it
> userdb {
> driver = prefetch
> }
> userdb {
> args = /usr/local/etc/dovecot/dovecot-ldap.conf.ext
> driver = ldap
> }
> verbose_proctitle = yes
> protocol lmtp {
> mail_plugins = fts fts_solr acl zlib virtual sieve
> postmaster_address = postmaster at amfes.com
> }
> protocol lda {
> mail_plugins = fts fts_solr acl zlib virtual sieve
> }
> protocol imap {
> mail_max_userip_connections = 50
> mail_plugins = fts fts_solr acl zlib virtual imap_acl imap_zlib
> mailbox_alias
> }
> local 192.168.0.2 {
> protocol imap {
> ssl_cert = </etc/letsencrypt/live/mail.amfes.com/fullchain.pem
> ssl_key = # hidden, use -P to show it
> }
> }
>
>
> --
> Daniel
>
I believe this is fixed with https://github.com/dovecot/core/commit/4fcd4e8fad45dcaa637e4cb36a9f99204d69badf.patch on v2.3.4.
Aki
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