[Bug 50784] New: wine crashes trying to call the entrypoint of an ILONLY exe in a 64-bit process

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50784

Bug ID: 50784
           Summary: wine crashes trying to call the entrypoint of an
                    ILONLY exe in a 64-bit process
           Product: Wine
           Version: 6.3
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ntdll
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 69591
  --> https://bugs.winehq.org/attachment.cgi?id=69591
test exe

When running a test exe in 64-bit mode, I get this error:

0024:err:seh:NtRaiseException Unhandled exception code c0000005 flags 0 addr
0x40231e

According winedump, 0x40231e is the entry point of the image. It's a 32-bit
ILONLY exe.

To reproduce, run the attached exe with wine64.

[Bug 50784] wine crashes trying to call the entrypoint of an ILONLY exe in a 64-bit process

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50784

Esme Povirk  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]
           Keywords|                            |download, testcase

[Bug 50784] wine crashes trying to call the entrypoint of an ILONLY exe in a 64-bit process

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50784

Esme Povirk  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|ntdll                       |wineserver

--- Comment #1 from Esme Povirk  ---
> From a +server log:

0024: create_file( access=80100000, sharing=00000005, create=1,
options=00000060, attrs=00000000,
objattr={rootdir=0000,attributes=00000040,sd={},name=L"\??\Z:\home\wine\wine-mono\tests\tests-x86_64\vararg_pinvoke.exe"},
filename="/home/wine/.wine/dosdevices/z:/home/wine/wine-mono/tests/tests-x86_64/vararg_pinvoke.exe"
)
0024: create_file() = 0 { handle=001c }
...
0024: create_mapping( access=000f000d, flags=01000000, file_access=00000001,
size=00000000, file_handle=001c, objattr={} )
0024: create_mapping() = 0 { handle=0020 }
...
0024: get_mapping_info( handle=0020, access=00000001 )
0024: get_mapping_info() = 0 { size=00006000, flags=01800000, shared_file=0000,
image={base=00400000,entry_point=0040231e,map_size=00006000,stack_size=00100000,stack_commit=00001000,zerobits=00000000,subsystem=00000003,subsystem_minor=0000,subsystem_major=0004,osversion_major=0004,osversion_minor=0000,image_charact=010e,dll_charact=0000,machine=014c,contains_code=1,image_flags=00,loader_flags=00000001,header_size=00000200,file_size=00000800,checksum=00000000,cpu=x86}
}

If I understand this correctly, image_flags here should have 02 set, indicating
an ILONLY image.

[Bug 50784] wine crashes trying to call the entrypoint of an ILONLY exe in a 64-bit process

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50784

--- Comment #2 from Esme Povirk  ---
Created attachment 69596
  --> https://bugs.winehq.org/attachment.cgi?id=69596
work-around patch

This is caused by the version check in load_clr_header, the runtime version in
the image is version 2.00 (based on winedump -j clr), but wineserver expects at
least 2.05.

[Bug 50784] wine crashes trying to call the entrypoint of an ILONLY exe in a 64-bit process

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50784

--- Comment #3 from Esme Povirk  ---
ECMA-335 II.25.3.3 lists the "current" version as 2.0, so I'm not sure where
the expectation of 2.05 comes from.

[Bug 50784] wine crashes trying to call the entrypoint of an ILONLY exe in a 64-bit process

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50784

Esme Povirk  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #4 from Esme Povirk  ---
It seems I made a mistake in my testing on Windows. I had a 64-bit dll with the
exe instead of a 32-bit one. Windows is loading this in a 32-bit process, the
same as Wine.

Arguably, wine/wine64 should select the correct version, but that's a more
general known issue. From CreateProcess Wine's behavior is correct.

[Bug 50784] wine crashes trying to call the entrypoint of an ILONLY exe in a 64-bit process

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50784

--- Comment #5 from Esme Povirk  ---
This means that on Windows and Wine, many of Wine Mono's test cases were only
being run as 32-bit. We only noticed in this case because this one happened to
load a native dll.

[Bug 50784] wine crashes trying to call the entrypoint of an ILONLY exe in a 64-bit process

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50784

Esme Povirk  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #6 from Esme Povirk  ---
Closing invalid.