From ddfae2640c59e6226f2a9242483b7b294edaccab Mon Sep 17 00:00:00 2001 From: Liming Gao Date: Thu, 1 Dec 2016 14:47:55 +0800 Subject: [PATCH] MdeModulePkg PiSmmCore: Update FreePages to handle zero address and pages https://bugzilla.tianocore.org/show_bug.cgi?id=278 Zero memory address or zero number pages are invalid to SmmFreePages(). Cc: Star Zeng Cc: Jiewen Yao Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Liming Gao Reviewed-by: Star Zeng --- MdeModulePkg/Core/PiSmmCore/Page.c | 8 ++++---- MdeModulePkg/Core/PiSmmCore/PiSmmCore.h | 4 ++-- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/MdeModulePkg/Core/PiSmmCore/Page.c b/MdeModulePkg/Core/PiSmmCore/Page.c index 5f19d7e6c9..1bc8fd82c8 100644 --- a/MdeModulePkg/Core/PiSmmCore/Page.c +++ b/MdeModulePkg/Core/PiSmmCore/Page.c @@ -861,7 +861,7 @@ InternalMergeNodes ( @param[in] AddRegion If this memory is new added region. @retval EFI_NOT_FOUND Could not find the entry that covers the range. - @retval EFI_INVALID_PARAMETER Address not aligned. + @retval EFI_INVALID_PARAMETER Address not aligned, Address is zero or NumberOfPages is zero. @return EFI_SUCCESS Pages successfully freed. **/ @@ -875,7 +875,7 @@ SmmInternalFreePagesEx ( LIST_ENTRY *Node; FREE_PAGE_LIST *Pages; - if ((Memory & EFI_PAGE_MASK) != 0) { + if (((Memory & EFI_PAGE_MASK) != 0) || (Memory == 0) || (NumberOfPages == 0)) { return EFI_INVALID_PARAMETER; } @@ -933,7 +933,7 @@ SmmInternalFreePagesEx ( @param[in] NumberOfPages The number of pages to free. @retval EFI_NOT_FOUND Could not find the entry that covers the range. - @retval EFI_INVALID_PARAMETER Address not aligned. + @retval EFI_INVALID_PARAMETER Address not aligned, Address is zero or NumberOfPages is zero. @return EFI_SUCCESS Pages successfully freed. **/ @@ -954,7 +954,7 @@ SmmInternalFreePages ( @param NumberOfPages The number of pages to free. @retval EFI_NOT_FOUND Could not find the entry that covers the range. - @retval EFI_INVALID_PARAMETER Address not aligned. + @retval EFI_INVALID_PARAMETER Address not aligned, Address is zero or NumberOfPages is zero. @return EFI_SUCCESS Pages successfully freed. **/ diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h index 8df1e500f0..d1e7791302 100644 --- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h +++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h @@ -312,7 +312,7 @@ SmmInternalAllocatePages ( @param NumberOfPages The number of pages to free @retval EFI_NOT_FOUND Could not find the entry that covers the range - @retval EFI_INVALID_PARAMETER Address not aligned + @retval EFI_INVALID_PARAMETER Address not aligned, Address is zero or NumberOfPages is zero. @return EFI_SUCCESS Pages successfully freed. **/ @@ -330,7 +330,7 @@ SmmFreePages ( @param NumberOfPages The number of pages to free @retval EFI_NOT_FOUND Could not find the entry that covers the range - @retval EFI_INVALID_PARAMETER Address not aligned + @retval EFI_INVALID_PARAMETER Address not aligned, Address is zero or NumberOfPages is zero. @return EFI_SUCCESS Pages successfully freed. **/ -- 2.39.2