May 24 15:12:56 Panic: auth: file userdb-blocking.c: line 124 (userdb_blocking_iter_next): assertion failed: (ctx->conn != NULL)
May 24 15:12:56 Error: auth: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(backtrace_append+0x42) [0x7fce47de9582] -> /usr/lib/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7fce47de969e] -> /usr/lib/dovecot/libdovecot.so.0(+0x1022fb) [0x7fce47df62fb] -> /usr/lib/dovecot/libdovecot.so.0(+0x102391) [0x7fce47df6391] -> /usr/lib/dovecot/libdovecot.so.0(+0x55589) [0x7fce47d49589] -> dovecot/auth(+0x13f40) [0x5578f720af40] -> dovecot/auth(+0x35127) [0x5578f722c127] -> dovecot/auth(+0x29626) [0x5578f7220626] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x69) [0x7fce47e0c529] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x132) [0x7fce47e0dc12] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x50) [0x7fce47e0c5d0] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x40) [0x7fce47e0c790] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7fce47d7f353] -> dovecot/auth(main+0x3a8) [0x5578f720bc88] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xea) [0x7fce47aaad0a] -> dovecot/auth(_start+0x2a) [0x5578f720be5a]
May 24 15:12:56 Error: replicator: auth-master: userdb list: Disconnected unexpectedly
May 24 15:12:56 Error: replicator: listing users failed, can't replicate existing data
May 24 15:12:56 Fatal: auth: master: service(auth): child 146 killed with signal 6 (core not dumped - https://dovecot.org/bugreport.html#coredumps - set /proc/sys/fs/suid_dumpable to 2)