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[Xboxkrnl] Return error code from KeSetAffinityThread on null thread

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If the guest-supplied thread pointer doesn't resolve to an XThread,
we previously returned STATUS_SUCCESS without setting the affinity
or writing previous_affinity_ptr, leaving callers believing the call
succeeded. Real NT kernel would crash on a bad pointer, but that's not
easy for us to replicate so return STATUS_INVALID_HANDLE instead and
log the pointer value so the condition is visible rather than silent.
This commit is contained in:
Herman S.
2026-04-13 13:07:53 +09:00
parent d42411ec2a
commit 658bd5db70
1 changed files with 10 additions and 5 deletions
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15
src/xenia/kernel/xboxkrnl/xboxkrnl_threading.cc
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@@ -331,12 +331,17 @@ dword_result_t KeSetAffinityThread_entry(lpvoid_t thread_ptr, dword_t affinity,
return X_STATUS_INVALID_PARAMETER;
}
auto thread = XObject::GetNativeObject<XThread>(kernel_state(), thread_ptr);
if (thread) {
if (previous_affinity_ptr) {
*previous_affinity_ptr = uint32_t(1) << thread->active_cpu();
}
thread->SetAffinity(affinity);
if (!thread) {
XELOGW(
"KeSetAffinityThread: guest thread pointer {:08X} did not resolve to "
"an XThread; returning STATUS_INVALID_HANDLE",
thread_ptr.guest_address());
return X_STATUS_INVALID_HANDLE;
}
if (previous_affinity_ptr) {
*previous_affinity_ptr = uint32_t(1) << thread->active_cpu();
}
thread->SetAffinity(affinity);
return X_STATUS_SUCCESS;
}
DECLARE_XBOXKRNL_EXPORT1(KeSetAffinityThread, kThreading, kImplemented);