dovecot - Sep 2011 - Crash in director/lmtp-proxy (lmtp_proxy_output_timeout)

FYI, we saw one panic on our director/lmtp-proxy yesterday. It's running 
dovecot v2.0.13, so it very well might have been fixed already.., but here
it is anyway:


Aug 31 11:33:31 loadbalancer1 dovecot::  lmtp(4119): Panic: file lmtp-proxy.c:
line 370 (lmtp_proxy_output_timeout): assertion failed:
(proxy->data_input->eof)
Aug 31 11:33:31 loadbalancer1 dovecot::  lmtp(4119): Error: Raw backtrace:
/usr/lib64/dovecot/libdovecot.so.0 [0x3aabc3bb70] ->
/usr/lib64/dovecot/libdovecot.so.0 [0x3aabc3bbc6] ->
/usr/lib64/dovecot/libdovecot.so.0 [0x3aabc3b083] -> dovecot/lmtp [0x406c90]
-> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handle_timeouts+0xcd)
[0x3aabc46a8d] ->
/usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x68) [0x3aabc47a48]
-> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x2d) [0x3aabc466fd] ->
/usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x13) [0x3aabc34fe3] ->
dovecot/lmtp(main+0x144) [0x404034] ->
/lib64/libc.so.6(__libc_start_main+0xf4) [0x32ae81d994] -> dovecot/lmtp
[0x403e39]
Aug 31 11:33:31 loadbalancer1 dovecot::  master: Error: service(lmtp): child
4119 killed with signal 6 (core dumps disabled)

On postfix side at the same time, we saw a few different messages about:

	postfix/lmtp[5178]::  849FD1C024: lost connection with
loadbalancers.example.com[192.168.42.15] while sending end of data -- message
may be sent more than once

so I suspect this crash took down all active lmtp-proxyed connections.


  -jf