[edk2-devel] [PATCH 1/1] UefiCpuPkg/PiSmmCpuDxeSmm: Add check for pointer Pml5Entry

[Zhang, Shenglei]

The pointer Pml5Entry, returned from call to function
AllocatePageTableMemory, may be null.
So add check for it.

Cc: Eric Dong <eric.dong at intel.com>
Cc: Ray Ni <ray.ni at intel.com>
Cc: Laszlo Ersek <lersek at redhat.com>
Signed-off-by: Shenglei Zhang <shenglei.zhang at intel.com>
---
 UefiCpuPkg/PiSmmCpuDxeSmm/X64/PageTbl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/PageTbl.c b/UefiCpuPkg/PiSmmCpuDxeSmm/X64/PageTbl.c
index a3b62f778741..d7af3b6d7941 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/PageTbl.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/X64/PageTbl.c
@@ -375,6 +375,7 @@ SmmInitPageTable (
     // Fill PML5 entry
     //
     Pml5Entry = (UINT64*)AllocatePageTableMemory (1);
+    ASSERT (Pml5Entry != NULL);
     *Pml5Entry = (UINTN) Pml4Entry | mAddressEncMask | PAGE_ATTRIBUTE_BITS;
     ZeroMem (Pml5Entry + 1, EFI_PAGE_SIZE - sizeof (*Pml5Entry));
     //
-- 
2.18.0.windows.1


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