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sys: FspIopCompleteCanceledIrp: wrap IRP completion in FsRtlEnterFileSystem/FsRtlExitFileSystem

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Bill Zissimopoulos
2016-04-04 16:24:58 -07:00
parent 8ef10e5992
commit bde93d020b
1 changed files with 9 additions and 0 deletions
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9
src/sys/iop.c
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@@ -219,12 +219,21 @@ VOID FspIopCompleteCanceledIrp(PIRP Irp)
DEBUGLOGIRP(Irp, STATUS_CANCELLED); DEBUGLOGIRP(Irp, STATUS_CANCELLED);
/*
* An IRP cancel may happen at any time including when APC's are still enabled.
* For this reason we execute FsRtlEnterFileSystem/FsRtlExitFileSystem here.
* This will protect ERESOURCE operations during Request finalizations.
*/
FsRtlEnterFileSystem();
PIRP TopLevelIrp = IoGetTopLevelIrp(); PIRP TopLevelIrp = IoGetTopLevelIrp();
IoSetTopLevelIrp(Irp); IoSetTopLevelIrp(Irp);
FspIopCompleteIrpEx(Irp, STATUS_CANCELLED, TRUE); FspIopCompleteIrpEx(Irp, STATUS_CANCELLED, TRUE);
IoSetTopLevelIrp(TopLevelIrp); IoSetTopLevelIrp(TopLevelIrp);
FsRtlExitFileSystem();
} }
BOOLEAN FspIopRetryPrepareIrp(PIRP Irp, NTSTATUS *PResult) BOOLEAN FspIopRetryPrepareIrp(PIRP Irp, NTSTATUS *PResult)