From: Torge Matthies <tmatthies(a)codeweavers.com> Overwatch 2 hooks KiUserCallbackDispatcher by overwriting the first five bytes with a jump, and returning to just after the jump. Make sure there is a five-byte instruction for it to replace. Signed-off-by: Torge Matthies <openglfreak(a)googlemail.com> --- dlls/ntdll/signal_x86_64.c | 1 + 1 file changed, 1 insertion(+) diff --git a/dlls/ntdll/signal_x86_64.c b/dlls/ntdll/signal_x86_64.c index 59dc20ed693..64d0cb1be57 100644 --- a/dlls/ntdll/signal_x86_64.c +++ b/dlls/ntdll/signal_x86_64.c @@ -679,6 +679,7 @@ void WINAPI user_callback_dispatcher( ULONG id, void *args, ULONG len ) * FIXME: not binary compatible */ __ASM_GLOBAL_FUNC( KiUserCallbackDispatcher, + ".byte 0x0f, 0x1f, 0x44, 0x00, 0x00\n\t" /* Overwatch 2 replaces the first 5 bytes with a jump */ "andq $0xFFFFFFFFFFFFFFF0, %rsp\n\t" __ASM_SEH(".seh_endprologue\n\t") "call " __ASM_NAME("user_callback_dispatcher") "\n\t" -- GitLab https://gitlab.winehq.org/wine/wine/-/merge_requests/1152