[Bug 48738] New: When running certain Batch files, my Wine cmd.exe reproducible crashes with "page fault on read access" or with "stack overflow in 32-bit code".

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48738

Bug ID: 48738
           Summary: When running certain Batch files, my Wine cmd.exe
                    reproducible crashes with "page fault on read access"
                    or with "stack overflow in 32-bit code".
           Product: Wine
           Version: 5.3
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: cmd
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 66628
  --> https://bugs.winehq.org/attachment.cgi?id=66628
Two batch files and the crashdump

I think the problem is new since middle of last year, at least reproducible
with Wine 5.2 and 5.3.

Find attached two small batch files: they should set some environment variables
and look for some directories, but they don't reach their end.
At real Windows (also when running at VirtualBox) they work properly instead.

Scenario:
 create a directory and store one.bat and two.bat into it.
 run:  wineconsole one.bat
 If the problem occurs, Wine crashes immediately.
 ("wine: Unhandled page fault on read access to FFFFFFF0 at address F7D2D3AB
(thread 01a8), starting debugger...")

The behavior depends very much on the content of the batch files:
adding commands or changing the variable's names may prevent it from crashing
or may shift the crash to a different line.