http://bugs.winehq.org/show_bug.cgi?id=28898
--- Comment #7 from Erich Hoover ehoover@mines.edu 2011-10-26 12:56:35 CDT --- (In reply to comment #6)
That's what I was asking myself. Maybe something just went wrong in the git bisect, I've just doublechecked and you're right, the ntdll/tests dummy revert is not needed. Only the ws2_32 one...
Ok, then based on your backtrace and the modified area of the code then I would guess that AcceptEx is not triggering a completion that it is supposed to. A debug log on winsock might help, it should at least tell us how WS2_AcceptEx and WS2_async_accept are being called.