Hi, my dovecot 2.17.1 instance is crashing a lot. Quick question: The coredump should contain some private data, am I correct ? Assuming so, should it be posted on a public maillist?

Panic: file dsync-ibc.c: line 166 (dsync_ibc_send_mail_request): assertion failed: (request->guid != NULL || request->uid != 0) ... Fatal: master: service(doveadm): child 43879 killed with signal 6 (core dumped)

Using gdb/bt over the coredump I get:

Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `dovecot/doveadm-server'. Program terminated with signal SIGABRT, Aborted. #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 50 return ret; (gdb) bt #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 #1 0x00007f612d382db5 in __GI_abort () at abort.c:79 #2 0x00007f612db04485 in default_fatal_finish (status=0, type=LOG_TYPE_PANIC) at failures.c:459 #3 fatal_handler_real (ctx=<optimized out>, format=<optimized out>, args=<optimized out>) at failures.c:471 #4 0x00007f612dbb10f7 in i_internal_fatal_handler (ctx=<optimized out>, format=<optimized out>, args=<optimized out>) at failures.c:872 #5 0x00007f612db04126 in i_panic (format=format@entry=0x5641e4c16ba8 "file %s: line %d (%s): assertion failed: (%s)") at failures.c:524 #6 0x00005641e4bcfcb2 in dsync_ibc_send_mail_request (ibc=0x5641e50a5990, request=0x5641e51dcc70) at dsync-ibc.c:166 #7 0x00005641e4bfe0bc in dsync_brain_send_mail_request (brain=0x5641e50a8538) at dsync-brain-mails.c:215 #8 dsync_brain_sync_mails (brain=brain@entry=0x5641e50a8538) at dsync-brain-mails.c:418 #9 0x00005641e4bf9ad8 in dsync_brain_run_real (changed_r=0x7ffcd2397a47, brain=0x5641e50a8538) at dsync-brain.c:716 #10 dsync_brain_run (changed_r=0x7ffcd2397a47, brain=0x5641e50a8538) at dsync-brain.c:749 #11 dsync_brain_run (brain=0x5641e50a8538, changed_r=0x7ffcd2397a47) at dsync-brain.c:737 #12 0x00005641e4bfa13e in dsync_brain_run_io (context=0x5641e50a8538) at dsync-brain.c:110 #13 0x00005641e4c0b3c3 in dsync_ibc_stream_input (ibc=0x5641e50a5990) at dsync-ibc-stream.c:232 #14 0x00007f612dbc78ad in io_loop_call_io (io=0x5641e5040510) at ioloop.c:737 #15 0x00007f612dbc8f19 in io_loop_handler_run_internal (ioloop=ioloop@entry=0x5641e4f89ce0) at ioloop-epoll.c:222 #16 0x00007f612dbc7950 in io_loop_handler_run (ioloop=0x5641e4f89ce0) at ioloop.c:789 #17 0x00007f612dbc7ad0 in io_loop_run (ioloop=0x5641e4f89ce0) at ioloop.c:762 #18 0x00005641e4bddafa in cmd_dsync_run_remote (user=<optimized out>, user=<optimized out>) at doveadm-dsync.c:496 #19 cmd_dsync_run (_ctx=0x5641e4f89fe8, user=<optimized out>) at doveadm-dsync.c:703 #20 0x00005641e4bdfc26 in doveadm_mail_next_user (ctx=0x5641e4f89fe8, error_r=0x7ffcd2397de8) at doveadm-mail.c:462 #21 0x00005641e4be0d74 in doveadm_mail_cmd_exec (wildcard_user=0x0, ctx=0x5641e4f89fe8) at doveadm-mail.c:654 #22 doveadm_cmd_ver2_to_mail_cmd_wrapper (cctx=<optimized out>) at doveadm-mail.c:983 #23 0x00005641e4bf17c7 in doveadm_cmd_run_ver2 (argc=argc@entry=10, argv=argv@entry=0x5641e4fa3788, cctx=cctx@entry=0x7ffcd2397f40) at doveadm-cmd.c:465 #24 0x00005641e4bf5d1a in doveadm_cmd_server_run_ver2 (cctx=0x7ffcd2397f40, argv=0x5641e4fa3788, argc=10, conn=0x5641e4f81328) at client-connection-tcp.c:187 #25 doveadm_cmd_handle (cctx=0x7ffcd2397f40, argv=<optimized out>, argc=<optimized out>, cmd_name=<optimized out>, conn=0x5641e4f81328) at client-connection-tcp.c:214 #26 client_handle_command (args=<optimized out>, conn=0x5641e4f81328) at client-connection-tcp.c:284 #27 client_connection_tcp_input (conn=0x5641e4f81328) at client-connection-tcp.c:436 #28 0x00007f612dbc78ad in io_loop_call_io (io=0x5641e4f88ee0) at ioloop.c:737 #29 0x00007f612dbc8f19 in io_loop_handler_run_internal (ioloop=ioloop@entry=0x5641e4f3df40) at ioloop-epoll.c:222 #30 0x00007f612dbc7950 in io_loop_handler_run (ioloop=0x5641e4f3df40) at ioloop.c:789 #31 0x00007f612dbc7ad0 in io_loop_run (ioloop=0x5641e4f3df40) at ioloop.c:762 #32 0x00007f612db39287 in master_service_run (service=0x5641e4f3dda0, callback=<optimized out>) at master-service.c:863 #33 0x00005641e4bd09f2 in main (argc=<optimized out>, argv=<optimized out>) at main.c:124

# 2.3.17.1 (476cd46418): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.17.1 (a1a0b892) # OS: Linux 4.18.0-348.7.1.el8_5.x86_64 x86_64 AlmaLinux release 8.5 (Arctic Sphynx) xfs # Hostname: redacted auth_username_format = %Ln doveadm_password = # hidden, use -P to show it first_valid_uid = 1000 mail_home = /var/spool/imap/%n mail_location = maildir:/var/spool/imap/%n/mail:VOLATILEDIR=/var/spool/imap/%n mail_plugins = " notify replication" 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 { list = children location = maildir:/var/spool/imap/redacted/mail/:INDEXPVT=/var/spool/imap/%n/pub-seen-idx/ mailbox * { autoexpunge = 60 days } prefix = redacted/ separator = / subscriptions = no type = public } namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / } passdb { args = scheme=CRYPT username_format=%n /etc/dovecot/users driver = passwd-file } passdb { args = failure_show_msg=yes dovecot driver = pam } plugin { mail_replica = tcps:10.111.1.1:26 sieve = file:/var/spool/imap/%n/sieve;active=/var/spool/imap/%n/.dovecot.sieve sieve_before = /var/lib/dovecot/sieve.d/ sieve_global = /var/lib/dovecot/sieve.d/ } protocols = imap lmtp sieve replication_dsync_parameters = -d -N -l 60 -U service aggregator { fifo_listener replication-notify-fifo { mode = 0666 user = dovecot } unix_listener replication-notify { mode = 0666 user = dovecot } } service doveadm { inet_listener { port = 26 ssl = yes } } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0666 user = dovecot } } ssl = required ssl_cert =

Atenciosamente/Kind regards, Salatiel