diff options
| author | lzeng14 <lzeng14@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-05-11 01:33:01 +0000 |
|---|---|---|
| committer | lzeng14 <lzeng14@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-05-11 01:33:01 +0000 |
| commit | 4694dd1ba8ad0242a7cf7467568ce001619d3fde (patch) | |
| tree | e9b33a85f60bc0bdd9517ff28a90ecdcf37fc9bc /MdeModulePkg | |
| parent | 2e4c9e0158cc10226dc0e2de679bc984e288f18a (diff) | |
| download | edk2-4694dd1ba8ad0242a7cf7467568ce001619d3fde.zip edk2-4694dd1ba8ad0242a7cf7467568ce001619d3fde.tar.gz edk2-4694dd1ba8ad0242a7cf7467568ce001619d3fde.tar.bz2 | |
DestPtr may point to the lower aligned address in the free memory region (FreeMemBase, FreeMemBase + FreeMemSize), the free memory region may be updated to override the private signature. So update FreeMemSize to avoid the potential overlap.
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13303 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg')
| -rw-r--r-- | MdeModulePkg/Universal/CapsulePei/Common/CapsuleCoalesce.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/MdeModulePkg/Universal/CapsulePei/Common/CapsuleCoalesce.c b/MdeModulePkg/Universal/CapsulePei/Common/CapsuleCoalesce.c index 0428111..a95b472 100644 --- a/MdeModulePkg/Universal/CapsulePei/Common/CapsuleCoalesce.c +++ b/MdeModulePkg/Universal/CapsulePei/Common/CapsuleCoalesce.c @@ -945,7 +945,7 @@ CapsuleDataCoalesce ( DestPtr = FreeMemBase + FreeMemSize - CapsuleSize;
DestPtr = (UINT8 *) ((UINTN) DestPtr &~ (UINTN) (sizeof (UINTN) - 1));
FreeMemBase = (UINT8 *) BlockList + DescriptorsSize;
- FreeMemSize = FreeMemSize - DescriptorsSize - CapsuleSize;
+ FreeMemSize = (UINTN) DestPtr - (UINTN) FreeMemBase;
NewCapsuleBase = (VOID *) DestPtr;
//
|