The fixed previous shadow stack token should be initialized as UINT64.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3192
Signed-off-by: Sheng Wei <w.sh...@intel.com>
Cc: Eric Dong <eric.d...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Laszlo Ersek <ler...@redhat.com>
Cc: Rahul Kumar <rahul1.ku...@intel.com>
Cc: Jiewen Yao <jiewen....@intel.com>
---
UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmmFuncsArch.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmmFuncsArch.c
b/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmmFuncsArch.c
index 661c1ba294..ca3f5ff91a 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmmFuncsArch.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmmFuncsArch.c
@@ -202,7 +202,7 @@ InitShadowStack (
// Please refer to UefiCpuPkg/Library/CpuExceptionHandlerLib/X64 for the
full stack frame at runtime.
//
InterruptSsp = (UINT32)((UINTN)ShadowStack + EFI_PAGES_TO_SIZE(1) -
sizeof(UINT64));
- *(UINT32 *)(UINTN)InterruptSsp = (InterruptSsp - sizeof(UINT64) * 4) |
0x2;
+ *(UINT64 *)(UINTN)InterruptSsp = (InterruptSsp - sizeof(UINT64) * 4) |
0x2;
mCetInterruptSsp = InterruptSsp - sizeof(UINT64);
mCetInterruptSspTable = (UINT32)(UINTN)(mSmmInterruptSspTables +
sizeof(UINT64) * 8 * CpuIndex);
--
2.16.2.windows.1
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