audk/MdeModulePkg/Core/Dxe
Jian J Wang dd12683e1f MdeModulePkg/Core: fix mem alloc issues in heap guard
There're two ASSERT issues which will be triggered by boot loader of
Windows 10.

The first is caused by allocating memory in heap guard during another
memory allocation, which is not allowed in DXE core. Avoiding reentry
of memory allocation has been considered in heap guard feature. But
there's a hole in the code of function FindGuardedMemoryMap(). The fix
is adding AllocMapUnit parameter in the condition of while(), which
will prevent memory allocation from happenning during Guard page
check operation.

The second is caused by the core trying to allocate page 0 with Guard
page, which will cause the start address rolling back to the end of
supported system address. According to the requirement of heap guard,
the fix is just simply skipping the free memory at page 0 and let
the core continue searching free memory after it.

Cc: Star Zeng <star.zeng@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
2018-03-14 16:15:27 +08:00
..
Dispatcher MdeModulePkg DxeCore: Support USED_SIZE FV_EXT_TYPE 2017-12-01 09:36:59 +08:00
DxeMain MdeModulePkg/Core/Dxe: Call new API InitializeCpuExceptionHandlersEx instead 2017-12-08 14:38:51 +08:00
Event MdeModulePkg/Tpl: Fix negative value left shift 2017-09-29 16:14:17 +08:00
FwVol MdeModulePkg Core: Propagate PEI-phase FV authentication status to DXE 2017-10-10 20:54:42 +08:00
FwVolBlock MdeModulePkg Core: Propagate PEI-phase FV authentication status to DXE 2017-10-10 20:54:42 +08:00
Gcd MdeModulePkg: Update DxeCore to consume PI EfiGcdMemoryTypePersistent 2017-10-10 14:19:18 +08:00
Hand MdeModulePkg/DxeCore: Add comments for the ASSERT to check NULL ptr 2017-10-09 10:45:31 +08:00
Image MdeModulePkg/Core/Dxe: Remove extra connects for UEFI Applications 2017-11-13 09:56:49 -08:00
Library Update the copyright notice format 2010-04-24 09:49:11 +00:00
Mem MdeModulePkg/Core: fix mem alloc issues in heap guard 2018-03-14 16:15:27 +08:00
Misc MdeModulePkg/Core: Fix feature conflict between NX and Stack guard 2018-03-07 20:56:42 +08:00
SectionExtraction MdeModulePkg DxeCore: Only free ScratchBuffer when it is not NULL 2017-06-26 13:17:16 +08:00
DxeCore.uni MdeModulePkg: Convert all .uni files to utf-8 2015-12-15 04:56:23 +00:00
DxeCoreExtra.uni MdeModulePkg: Convert all .uni files to utf-8 2015-12-15 04:56:23 +00:00
DxeMain.h MdeModulePkg/Core: Merge memory map after filtering paging capability 2017-11-28 09:25:32 +08:00
DxeMain.inf MdeModulePkg/Core: Fix feature conflict between NX and Stack guard 2018-03-07 20:56:42 +08:00