[PATCH v2 0/1] MR7129: ntoskrnl.exe: Fix IRQL mismatch between cancel spin lock acquire and release.

[Jinoh Kang (＠iamahuman)]

Use the irql assigned by IoAcquireCancelSpinLock, not the
(yet-to-be-assigned) irp->CancelIrql.

This is for readability.  Since IoReleaseCancelSpinLock() ignores the
IRQL argument anyway, no semantic change is expected with unmodified
ntoskrnl.exe/hal.dll.

--
  v2: ntoskrnl.exe: Fix IRQL mismatch between cancel spin lock acquire and release.

https://gitlab.winehq.org/wine/wine/-/merge_requests/7129

[PATCH v2 1/1] ntoskrnl.exe: Fix IRQL mismatch between cancel spin lock acquire and release.

[Jinoh Kang]

From: Jinoh Kang

Use the irql assigned by IoAcquireCancelSpinLock, not the
(yet-to-be-assigned) irp->CancelIrql.

This is for readability.  Since IoReleaseCancelSpinLock() ignores the
IRQL argument anyway, no semantic change is expected with unmodified
ntoskrnl.exe/hal.dll.
---
 dlls/ntoskrnl.exe/ntoskrnl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index a375cd078b5..7d08ed06444 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -2122,7 +2122,7 @@ BOOLEAN WINAPI IoCancelIrp( IRP *irp )
     irp->Cancel = TRUE;
     if (!(cancel_routine = IoSetCancelRoutine( irp, NULL )))
     {
-        IoReleaseCancelSpinLock( irp->CancelIrql );
+        IoReleaseCancelSpinLock( irql );
         return FALSE;
     }