[v1] Resolve feature conflict between NX and Stack guard

[edk2] [PATCH 0/2] Resolve feature conflict between NX and Stack guard

Hao Wu posted 2 patches 6 years, 1 month ago

Diff against v2
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MdeModulePkg/Core/Dxe/DxeMain.inf             |  4 +-
MdeModulePkg/Core/Dxe/Misc/MemoryProtection.c | 81 +++++++++++++++++++++++----
2 files changed, 74 insertions(+), 11 deletions(-)

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[edk2] [PATCH 0/2] Resolve feature conflict between NX and Stack guard

Posted by Hao Wu 6 years, 1 month ago

If enabled, NX memory protection feature will mark some types of active
memory as NX (non-executable), which includes the first page of the stack.
This will overwrite the attributes of the first page of the stack if the
stack guard feature is also enabled.

The series will override the attributes setting to the first page of the
stack by adding back the 'EFI_MEMORY_RP' attribute when the stack guard
feature is enabled.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>

Hao Wu (2):
  MdeModulePkg/Core: Refine handling NULL detection in NX setting
  MdeModulePkg/Core: Fix feature conflict between NX and Stack guard

 MdeModulePkg/Core/Dxe/DxeMain.inf             |  4 +-
 MdeModulePkg/Core/Dxe/Misc/MemoryProtection.c | 81 +++++++++++++++++++++++----
 2 files changed, 74 insertions(+), 11 deletions(-)

-- 
2.12.0.windows.1

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