[PATCH] ntdll: Workaround for requesting thread affinity mask that isn't a subset of the system's mask
Roger Zoellner
zoellner.roger at gmail.com
Sat Sep 8 08:26:18 CDT 2018
This patch is related to the game 'Divinity Original Sin 2' which crashes on startup, if the system only
has 4 or less logical cpus.
By Microsoft specification, requesting a thread affinity mask requires it be be a subset of the process affiniy mask.
However the game requests a mask F...FE (-2) which makes wine to return STATUS_INVALID_PARAMETER, which in turn makes
the game hang.
This patch will make wine to adjust the mask in this case, which makes the game start correctly.
Signed-off-by: Roger Zoellner <zoellner.roger at gmail.com>
---
dlls/ntdll/thread.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/dlls/ntdll/thread.c b/dlls/ntdll/thread.c
index 59d64e174d..6beb8c1a3d 100644
--- a/dlls/ntdll/thread.c
+++ b/dlls/ntdll/thread.c
@@ -1290,6 +1290,7 @@ NTSTATUS WINAPI NtSetInformationThread( HANDLE handle, THREADINFOCLASS class,
if (length != sizeof(ULONG_PTR)) return STATUS_INVALID_PARAMETER;
req_aff = *(const ULONG_PTR *)data;
if ((ULONG)req_aff == ~0u) req_aff = affinity_mask;
+ else if ((LONG) req_aff < 0) req_aff = affinity_mask & req_aff;
else if (req_aff & ~affinity_mask) return STATUS_INVALID_PARAMETER;
else if (!req_aff) return STATUS_INVALID_PARAMETER;
SERVER_START_REQ( set_thread_info )
--
2.18.0
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