[Dovecot] Panic, rawtrace, log, etc

[Brandon Lamb]

While running some doveadm expunge -A mailbox Spam savedbefore 30d and
doveadm purge -A after

2010-08-26 16:20:51 auth: Error: net_accept() failed: Too many open files
2010-08-26 16:20:51 master: Warning: service(auth): process_limit
reached, client connections are being dropped
2010-08-26 16:21:21 auth: Panic: file auth-request-handler.c: line 85
(auth_request_handler_unref): assertion failed:
(hash_table_count(handler->requests) == 0)
2010-08-26 16:21:21 auth: Error: Raw backtrace:
/usr/local/lib/dovecot/libdovecot.so.0(+0x39c1a) [0x7fe41f5f5c1a] ->
/usr/local/lib/dovecot/libdovecot.so.0(+0x39c6a) [0x7fe41f5f5c6a] ->
/usr/local/lib/dovecot/libdovecot.so.0(i_error+0) [0x7fe41f5d3026] ->
dovecot/auth [8 wait, 0 passdb, 0 userdb]() [0x412153] -> dovecot/auth
[8 wait, 0 passdb, 0 userdb]() [0x40c3ad] -> dovecot/auth [8 wait, 0
passdb, 0 userdb](auth_client_connections_deinit+0x41) [0x40c461] ->
dovecot/auth [8 wait, 0 passdb, 0 userdb](main+0x2ea) [0x4168ca] ->
/lib/libc.so.6(__libc_start_main+0xfd) [0x7fe41e60ac4d] ->
dovecot/auth [8 wait, 0 passdb, 0 userdb]() [0x40b1f9]
2010-08-26 16:21:21 master: Error: service(auth): child 14880 killed
with signal 6 (core dumps disabled)
2010-08-26 16:21:21 auth: Error: Master requested auth for nonexistent
client 14875
2010-08-26 16:21:21 auth: Error: Master requested auth for nonexistent
client 14873
2010-08-26 16:21:21 auth: Error: Master requested auth for nonexistent
client 14873
2010-08-26 16:21:21 auth: Error: Master requested auth for client
14874 with invalid cookie
2010-08-26 16:21:21 auth: Error: Master requested auth for client
14874 with invalid cookie
2010-08-26 16:21:21 auth: Error: Master requested auth for client
14875 with invalid cookie
2010-08-26 16:21:21 auth: Error: Master requested auth for client
14876 with invalid cookie
2010-08-26 16:21:21 auth: Error: Master requested auth for client
14875 with invalid cookie