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[NTOSKRNL] Don't call AcquireForLazyWrite with the master lock held

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This incorrect behavior was leading to a call at too high IRQL for paged code.
This was triggered by MS FastFAT.

ReleaseFromLazyWrite call was already correctly called to that regard.

CORE-11819
This commit is contained in:
Pierre Schweitzer 2018-12-21 08:44:14 +01:00
parent 85cd2849c0
commit 1435ff95b4
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GPG key ID: 7545556C3D585B0B
1 changed files with 5 additions and 4 deletions
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9
ntoskrnl/cc/view.c
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@ -222,18 +222,19 @@ CcRosFlushDirtyPages (
continue; continue;
} }
ASSERT(current->Dirty);
KeReleaseQueuedSpinLock(LockQueueMasterLock, OldIrql);
Locked = current->SharedCacheMap->Callbacks->AcquireForLazyWrite( Locked = current->SharedCacheMap->Callbacks->AcquireForLazyWrite(
current->SharedCacheMap->LazyWriteContext, Wait); current->SharedCacheMap->LazyWriteContext, Wait);
if (!Locked) if (!Locked)
{ {
OldIrql = KeAcquireQueuedSpinLock(LockQueueMasterLock);
CcRosVacbDecRefCount(current); CcRosVacbDecRefCount(current);
continue; continue;
} }
ASSERT(current->Dirty);
KeReleaseQueuedSpinLock(LockQueueMasterLock, OldIrql);
Status = CcRosFlushVacb(current); Status = CcRosFlushVacb(current);
current->SharedCacheMap->Callbacks->ReleaseFromLazyWrite( current->SharedCacheMap->Callbacks->ReleaseFromLazyWrite(