dovecot - Oct 2010 - assertion failed: (auth_request_state_count[request->state] > 0)

First time I've seen this with dovecot-2.0.5.  At 10:05 my auth server was
having problems and I saw this:

Thu Oct 14 10:05:32 server dovecot[3536]: lda: Error: userdb lookup(userX):
Request timed out
Thu Oct 14 10:05:32 server dovecot[3536]: lda: Fatal: Internal error occurred.
Refer to server log for more information.

OK, no problem there.  But a few minutes later this crash that may or may not be
related:

Thu Oct 14 10:09:39 server dovecot[150]: auth: Panic: file auth-request.c: line
78 (auth_request_set_state): assertion failed:
(auth_request_state_count[request->state] > 0)

Here is a backtrace, unfortunately somewhat obfuscated by compiler optimization.

0   __pthread_kill + 10
1   pthread_kill + 95
2   abort + 143
3   i_set_failure_file + 274
4   i_set_failure_internal + 103
5   i_debug + 0
6   auth_request_initial + 0
7   auth_request_initial + 71
8   auth_penalty_anvil_callback + 207
9   anvil_client_connect + 364
10  io_loop_handler_run + 234
11  io_loop_run + 56
12  master_service_run + 27
13  main + 674
14  start + 52

On Thu, 2010-10-14 at 12:18 -0500, Mike Abbott wrote:
> Thu Oct 14 10:09:39 server dovecot[150]: auth: Panic: file auth-request.c:
line 78 (auth_request_set_state): assertion failed:
(auth_request_state_count[request->state] > 0)
Well, I'm not entirely sure but maybe
http://hg.dovecot.org/dovecot-2.0/rev/0b509f1ee95c fixes this. A good
idea anyway to do it. :)