[NTOSKRNL] Fix mismatching spinlock release in CcPerformReadAhead()

HeisSpiter · HeisSpiter · commit dd392b9d6c55 · 2018-02-18T19:32:08.000+01:00
diff --git a/ntoskrnl/cc/copy.c b/ntoskrnl/cc/copy.c
@@ -597,7 +597,7 @@ CcPerformReadAhead(
         InterlockedAnd((volatile long *)&PrivateCacheMap->UlongFlags, 0xFFFEFFFF);
         KeReleaseSpinLockFromDpcLevel(&PrivateCacheMap->ReadAheadSpinLock);
     }
-    KeReleaseSpinLock(&PrivateCacheMap->ReadAheadSpinLock, OldIrql);
+    KeReleaseQueuedSpinLock(LockQueueMasterLock, OldIrql);
 
     /* If file was locked, release it */
     if (Locked)

Original file line number	Diff line number	Diff line change
`@@ -597,7 +597,7 @@ CcPerformReadAhead(`
`597`	`597`	`InterlockedAnd((volatile long *)&PrivateCacheMap->UlongFlags, 0xFFFEFFFF);`
`598`	`598`	`KeReleaseSpinLockFromDpcLevel(&PrivateCacheMap->ReadAheadSpinLock);`
`599`	`599`	`}`
`600`		`- KeReleaseSpinLock(&PrivateCacheMap->ReadAheadSpinLock, OldIrql);`
	`600`	`+ KeReleaseQueuedSpinLock(LockQueueMasterLock, OldIrql);`
`601`	`601`
`602`	`602`	`/* If file was locked, release it */`
`603`	`603`	`if (Locked)`