Issue regarding CreateProcess

[vulcan-dev]

I'm trying to debug a process which is launched via CreateProcessW, but it doesn't seem like it's supported.

Edit: So it turns out it is supported, but it just doesn't work very well. I can get around this issue by placing a breakpoint on one of these two lines:

    VirtualFreeEx(pi.hProcess, thread, 0, MEM_RELEASE);
    ResumeThread(pi.hThread);

I can then continue and it will be fine. If I place a breakpoint on anything above or below these and continue, I will get the error below

[Window Title]
Fatal Exception

[Content]
A fatal exception (code 0xc0000005) occurred. The process is terminating.

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https://github.com/EpicGames/raddebugger/issues

Call stack:

1. [0x7ff7d7349e4c] df_display_string_from_entity +44, df_core.c line 1432
2. [0x7ff7d734f15b] df_entity_fuzzy_item_array_from_entity_array_needle +267, df_core.c line 1374
3. [0x7ff7d72e455d] df_view_ui_Scheduler +717, df_views.c line 5481
4. [0x7ff7d73a9bcd] df_window_update_and_render +174077, df_gfx.c line 7282
5. [0x7ff7d743398a] update_and_render +4698, raddbg.c line 335
6. [0x7ff7d73bd9b8] entry_point +6888, raddbg_main.c line 393
7. [0x7ff7d73d3027] main_thread_base_entry_point +887, base_entry_point.c line 84
8. [0x7ff7d7435df8] wWinMain +360, os_core_win32.c line 1855
9. [0x7ff7d7436fea] __scrt_common_main_seh +262, exe_common.inl line 288
10. [0x7ffc44bc257d] KERNEL32
11. [0x7ffc4690aa48] ntdll

Version: 0.9.11 [aed9a28]

[Close]

[ryanfleury]

This is supported and tested normally, so there is something else going on. I can't seem to deduce what that is from the call stack. Are you able to send the EXE/PDB, or if not, send a minimal reproduction example, so that I can try to reproduce locally? I cannot reproduce this with any of my tests.

[vulcan-dev]

This is supported and tested normally, so there is something else going on. I can't seem to deduce what that is from the call stack. Are you able to send the EXE/PDB, or if not, send a minimal reproduction example, so that I can try to reproduce locally? I cannot reproduce this with any of my tests.

Apologies, I have updated my initial message with more information. The issue might be the thread I am creating, not CreateProcess itself

[ryanfleury]

Can you unpack that? What is unique about the thread you are creating? The Scheduler UI is crashing, and it should work regardless of which processes/threads are created.

[vulcan-dev]

Can you unpack that? What is unique about the thread you are creating? The Scheduler UI is crashing, and it should work regardless of which processes/threads are created.

Nothing really, the code for it is here:
https://github.com/TDMP-Team/TDMP-Refactor/blob/6123fd4c9f0db487545824483e705311c5ebc9a8/projects/launcher/src/main.cc#L146

But it simply launches a process, allocates memory, loads a dll, and then waits for the process to terminate

[ryanfleury]

Ah okay, interesting, I think this might have to do with the CreateRemoteThread. I don't know why that'd cause an issue but it is not a case that I've explicitly tested. I'll test with that as soon as I get a chance.

[vulcan-dev]

Ah okay, interesting, I think this might have to do with the CreateRemoteThread. I don't know why that'd cause an issue but it is not a case that I've explicitly tested. I'll test with that as soon as I get a chance.

Thank you, I really do appreciate it. I can then use this instead of Visual Studio for this project :)