[Bug 59141] New: Dragon Quest X 7.6.0 crashes on startup (null LdrData in PEB64)

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59141

            Bug ID: 59141
           Summary: Dragon Quest X 7.6.0 crashes on startup (null LdrData
                    in PEB64)
           Product: Wine
           Version: 10.20
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ntdll
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 79961
  --> http://bugs.winehq.org/attachment.cgi?id=79961
Minimal-effort workaround patch

As of version 7.6.0, the Square Enix online RPG "Dragon Quest X" crashes
on starting the game (DQXGame.exe, a 32-bit executable).  This version
appears to have added a middleware library to compress the executable, and
that middleware's loader attempts to fetch the image base address through
the LdrData module list in the 64-bit PEB.  Windows seems to initialize
this alongside the 32-bit version for 32-bit executables, but Wine does
not, leading to a crash on dereferencing the null LdrData pointer.

The attached workaround (which builds just enough of a pointer structure
to provide the .exe module's DllBase) is sufficient to get the game to
boot, but the "right" solution would probably be to fully mirror LdrData
to the 64-bit PEB.

-- 
Do not reply to this email, post in Bugzilla using the
above URL to reply.
You are receiving this mail because:
You are watching all bug changes.