[Bug 24676] New: winedbg causes Unhandled page fault on read access during stepi

http://bugs.winehq.org/show_bug.cgi?id=24676

Summary: winedbg causes Unhandled page fault on read access
                    during stepi
           Product: Wine
           Version: 1.3.4
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: winedbg
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=31191)
 --> (http://bugs.winehq.org/attachment.cgi?id=31191)
A step by step show of how the error is gotten w/ edited terminal output
session

During a debug of a set of 3rd party DLL's combined with a program, calls to
memory pages which need to be ?swapped in? will cause an Unhandled page fault
when stepi is used, *but* will run properly if that code segment is executed
seamlessly.  Essentially, the debugger is interfering with the page swapping
algorithms intermittently making debugging nearly impossible.

The test program is ebook_msc.exe found here:

http://projects.mobileread.com/reader/users/porkupan/PRS900/flash%20packages...

In the attachment, a short step by step view of how to re-create the bug is
given including my comments (!)

The backtrace often shows the error point in ntdll.