On Thu, 28 Oct 2021 17:32:28 +0300 (EEST) Aki Tuomi wrote:
[ ... ]
I guess you are using systemd-coredump, so try
coredumpctl dump -o core /usr/libexec/dovecot/imap
That worked so I can provide
# coredumpctl dump -o core /usr/local/dovecot/libexec/dovecot/imap PID: 309338 (imap) UID: 1953 (frank) GID: 12203 (elsner) Signal: 11 (SEGV) Timestamp: Thu 2021-10-28 15:48:43 CEST (2h 19min ago) Command Line: dovecot/imap [frank 127.0.0.1 STATUS] Executable: /usr/local/dovecot/libexec/dovecot/imap Control Group: /system.slice/dovecot.service Unit: dovecot.service Slice: system.slice Boot ID: c97b6e2b6f464589b7a50fbf4009d2bb Machine ID: 5367c967725543b39d46d1b5b5b90fa8 Hostname: christo Storage: /var/lib/systemd/coredump/core.imap.1953.c97b6e2b6f464589b7a50fbf4009d2bb.309338.1635428923000000.zst (present) Disk Size: 252.6K Message: Process 309338 (imap) of user 1953 dumped core. Stack trace of thread 309338: #0 0x00007ff2193782cb fts_user_autoindex_exclude (lib20_fts_plugin.so + 0xa2cb) #1 0x00007ff2193813b6 fts_mailbox_allocated (lib20_fts_plugin.so + 0x133b6) #2 0x00007ff21984ad1c hook_mailbox_allocated (libdovecot-storage.so.0 + 0x62d1c) #3 0x00007ff219845f11 mailbox_alloc (libdovecot-storage.so.0 + 0x5df11) #4 0x000055d49e2003e5 imap_status_get (imap + 0x2b3e5) #5 0x000055d49e1f0c6e cmd_status (imap + 0x1bc6e) #6 0x000055d49e1f7494 command_exec (imap + 0x22494) #7 0x000055d49e1f54c2 client_command_input (imap + 0x204c2) #8 0x000055d49e1f5574 client_command_input (imap + 0x20574) #9 0x000055d49e1f597d client_handle_next_command (imap + 0x2097d) #10 0x000055d49e1f5f30 client_input (imap + 0x20f30) #11 0x00007ff219733249 io_loop_call_io (libdovecot.so.0 + 0x116249) #12 0x00007ff2197348f2 io_loop_handler_run_internal (libdovecot.so.0 + 0x1178f2) #13 0x00007ff2197332f0 io_loop_handler_run (libdovecot.so.0 + 0x1162f0) #14 0x00007ff2197334b0 io_loop_run (libdovecot.so.0 + 0x1164b0) #15 0x00007ff2196a74f3 master_service_run (libdovecot.so.0 + 0x8a4f3) #16 0x000055d49e1e6f85 main (imap + 0x11f85) #17 0x00007ff219453b75 __libc_start_main (libc.so.6 + 0x27b75) #18 0x000055d49e1e704e _start (imap + 0x1204e)
HTH, Frank