[Dovecot] Re: Hang in 1.0.alpha4

[Mark Plaksin]

Mark Plaksin <happy at usg.edu> writes:

> No such luck.  It just hang.  Everything (truss, rawlog, client log) looks
> the same as before.  Here's the end of the debug output that the hang-debug
> patch added:

...

> imap(happy): Warning: buffer_flush=1, flush_pending=0
> imap(happy): Warning: cork changed, set=1, io=0
> imap(happy): Warning: func -> command_pending=1
> imap(happy): Warning: _flush_pending -> 1
> imap(happy): Warning: cork changed, set=0, io=0
> imap(happy): Warning: buffer_flush=0, flush_pending=1
> imap(happy): Warning:  - adding2

I can now reproduce a hang at will by simulating an IMAP client running the
commands from the rawlog.in corresponding to a hang.  The hang-debug and
truss output is slightly different from before.  The debug output is below.
Let me know if you need the truss output too (I can't tell how much of it
would be useful; it's too big to post the whole thing).

imap(happy): Warning: cork changed, set=0, io=0
imap(happy): Warning: buffer_flush=1, flush_pending=0
imap(happy): Warning: cork changed, set=1, io=0
imap(happy): Warning: cork changed, set=0, io=0
imap(happy): Warning: buffer_flush=1, flush_pending=0
imap(happy): Warning: func -> command_pending=1
imap(happy): Warning: _flush_pending -> 1
imap(happy): Warning:  - adding