diff options
Diffstat (limited to 'MdeModulePkg/Universal/FaultTolerantWriteDxe')
-rw-r--r-- | MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteSmm.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteSmm.c b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteSmm.c index 2580d478a3..2b3a63081d 100644 --- a/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteSmm.c +++ b/MdeModulePkg/Universal/FaultTolerantWriteDxe/FaultTolerantWriteSmm.c @@ -372,7 +372,7 @@ SmmFaultTolerantWriteHandler ( UINTN CommBufferPayloadSize;
UINTN PrivateDataSize;
UINTN Length;
-
+ UINTN TempCommBufferSize;
//
// If input is invalid, stop processing this SMI
@@ -381,13 +381,15 @@ SmmFaultTolerantWriteHandler ( return EFI_SUCCESS;
}
- if (*CommBufferSize < SMM_FTW_COMMUNICATE_HEADER_SIZE) {
+ TempCommBufferSize = *CommBufferSize;
+
+ if (TempCommBufferSize < SMM_FTW_COMMUNICATE_HEADER_SIZE) {
DEBUG ((EFI_D_ERROR, "SmmFtwHandler: SMM communication buffer size invalid!\n"));
return EFI_SUCCESS;
}
- CommBufferPayloadSize = *CommBufferSize - SMM_FTW_COMMUNICATE_HEADER_SIZE;
+ CommBufferPayloadSize = TempCommBufferSize - SMM_FTW_COMMUNICATE_HEADER_SIZE;
- if (!InternalIsAddressValid ((UINTN)CommBuffer, *CommBufferSize)) {
+ if (!InternalIsAddressValid ((UINTN)CommBuffer, TempCommBufferSize)) {
DEBUG ((EFI_D_ERROR, "SmmFtwHandler: SMM communication buffer in SMRAM or overflow!\n"));
return EFI_SUCCESS;
}
|