[Bug 40334] AION - Wine /Unhandled exception: page fault on read access to 0x00000000 in 64-bit code (0x0000000000000000).

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=40334

--- Comment #17 from Paul Gofman <gofmanp at gmail.com> ---
Created attachment 65651
  --> https://bugs.winehq.org/attachment.cgi?id=65651
hack

After fixing the crash at the very start (see Comment #16) the game loads it
data for a while and then crashes again during the transition screen before
showing login screen.

The crash happens in CrySystem.dll in CryFree(). It does not like really high
memory pointers, it probably indexes some part of them in some table and that
exceeds the bounds of the table. It looks like it expects the memory returned
by HeapAlloc to have limited address range. I am attaching the hack which
allows the game to run (by providing zero bits mask in heap virtual memory
allocations). To allow this work well I also included the patch by Rémi Bernon
which is currently hanging in development patches list waiting for review.
Anyway, this patch is not something I would recommend to include in any more or
less universal build. 

The game relies on the addresses allocated in (relatively) low space and it is
not guaranteed on Windows (though probably usually the case unless the lower
space is exhausted). I checked that there are no special suspicious flags on
heaps creation used.

I found an open source for Cry system on github. I looked at the code very
briefly but it looks like the present version does not have this bug, so maybe
the game is using some old version and the bug might go away as soon as the
game updates Cry system.

Besides this problem and the one related to this bug (Comment #16), there is
also a crash in wined3d right after logging in to server. It is the same for 32
and 64 bit version. I hope this one will be fixed rather sooner than later.

With all these issues bypassed, the game starts and runs seemingly flawless (I
created a character, walked quite a bit around the initial area and even
managed to kill some big fly near the gates).

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