EndingAddress is calculated incorrectly. Original code calculates it as (StartingAddress + Size). Correct value should be (StartingAddress + Size - 1.
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Samer El-Haj-Mahmoud <[email protected]> Signed-off-by: Tapan Shah <[email protected]> --- MdeModulePkg/Universal/Disk/RamDiskDxe/RamDiskProtocol.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/MdeModulePkg/Universal/Disk/RamDiskDxe/RamDiskProtocol.c b/MdeModulePkg/Universal/Disk/RamDiskDxe/RamDiskProtocol.c index 0c1df9d..de11721 100644 --- a/MdeModulePkg/Universal/Disk/RamDiskDxe/RamDiskProtocol.c +++ b/MdeModulePkg/Universal/Disk/RamDiskDxe/RamDiskProtocol.c @@ -2,6 +2,7 @@ The realization of EFI_RAM_DISK_PROTOCOL. Copyright (c) 2016, Intel Corporation. All rights reserved.<BR> + (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR> This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at @@ -50,7 +51,7 @@ RamDiskInitDeviceNode ( ); WriteUnaligned64 ( (UINT64 *) &(RamDiskDevNode->EndingAddr[0]), - (UINT64) PrivateData->StartingAddr + PrivateData->Size + (UINT64) PrivateData->StartingAddr + PrivateData->Size - 1 ); CopyGuid (&RamDiskDevNode->TypeGuid, &PrivateData->TypeGuid); RamDiskDevNode->Instance = PrivateData->InstanceNumber; @@ -305,7 +306,7 @@ RamDiskUnregister ( // and type guid. // if ((StartingAddr == PrivateData->StartingAddr) && - (EndingAddr == PrivateData->StartingAddr + PrivateData->Size) && + (EndingAddr == PrivateData->StartingAddr + PrivateData->Size - 1) && (CompareGuid (&RamDiskDevNode->TypeGuid, &PrivateData->TypeGuid))) { // // Uninstall the EFI_DEVICE_PATH_PROTOCOL & EFI_BLOCK_IO(2)_PROTOCOL -- 2.6.3.windows.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
