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rwfpl / rewolf-wow64ext

Helper library for x86 programs that runs under WOW64 layer on x64 versions of Microsoft Windows operating systems.
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Crash on windows 10 when build with release mode. #10

Closed halx99 closed 7 years ago

halx99 commented 7 years ago

When I use any 64 API to operate a 64bits application, the follow exception occrued, but if I press 'continue' again and again, The result seems ok. default

default

Exception thrown at 0x5A180094 in x-studio365.core.dll: 0xC0000005: Access violation writing location 0x08C0A5D8.

Unhandled exception at 0x5A180094 in x-studio365.core.dll: 0xC0000005: Access violation writing location 0x08C0A5D8.

Exception thrown at 0x7703361D (ntdll.dll) in x-studio365.core.dll: 0xC0000005: Access violation reading location 0x00000018.

Unhandled exception at 0x7703361D (ntdll.dll) in x-studio365.core.dll: 0xC0000005: Access violation reading location 0x00000018.

The thread 0x2da8 has exited with code 0 (0x0). The thread 0x3da8 has exited with code 0 (0x0). Exception thrown at 0x5A180094 in x-studio365.core.dll: 0xC0000005: Access violation writing location 0x08C0A618.

Unhandled exception at 0x5A180094 in x-studio365.core.dll: 0xC0000005: Access violation writing location 0x08C0A618.

Exception thrown at 0x770403A0 (ntdll.dll) in x-studio365.core.dll: 0xC0000005: Access violation reading location 0x00000030.

Unhandled exception at 0x770403A0 (ntdll.dll) in x-studio365.core.dll: 0xC0000005: Access violation reading location 0x00000030.

Exception thrown at 0x5A180094 in x-studio365.core.dll: 0xC0000005: Access violation writing location 0x08C0A5E8.

Unhandled exception at 0x5A180094 in x-studio365.core.dll: 0xC0000005: Access violation writing location 0x08C0A5E8.

Exception thrown at 0x77048F36 (ntdll.dll) in x-studio365.core.dll: 0xC0000005: Access violation reading location 0x00000030.

Exception thrown at 0x77048F36 (ntdll.dll) in x-studio365.core.dll: 0xC0000005: Access violation reading location 0x00000030.

Unhandled exception at 0x77048F36 (ntdll.dll) in x-studio365.core.dll: 0xC0000005: Access violation reading location 0x00000030.

rwfpl commented 7 years ago

Can you share snippet of code that causes this issue?

halx99 commented 7 years ago

Here is the test project: rewolf-wow64ext-crash.zip

By the way, My Windows version is: 10.0.15007.1000 And debug mode also will trigger ‘Access violation' exception

rwfpl commented 7 years ago

Ah, I guess new win10 build had to break something. I'll take a closer look then, thanks for reporting!

halx99 commented 7 years ago

Thanks, looking forward your response

rwfpl commented 7 years ago

The current wow64ext code interferes with the Return Flow Guard (RFG) mitigation, I'm checking if it can be easily fixed, stay tuned.

rwfpl commented 7 years ago

Fixed https://github.com/rwfpl/rewolf-wow64ext/commit/fd28b57fe926f3e57540850c37cdbcc766173dba

halx99 commented 7 years ago

Wow, great job, thanks, let me try immediately.

halx99 commented 7 years ago

This project is very useful for me to develop the Unity64bit Lua Project Debug tool, thanks again for you bring this excellent Project.