audk/MdeModulePkg/Core
Jian J Wang 61a62fc258 MdeModulePkg/Core: fix an issue of potential NULL pointer access
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1286

This issue is introduced by bb685071c2.

The *MemorySpaceMap assigned with NULL (line 1710) value might be
accessed (line 1726/1730) without any sanity check. Although it won't
happen in practice because of line 1722, we still need to add check
against NULL to make static code analyzer happy.

1710  *MemorySpaceMap       = NULL;
....  ...
1722  if (DescriptorCount == *NumberOfDescriptors) {
....  ...
1726    Descriptor = *MemorySpaceMap;
....  ...
1730        BuildMemoryDescriptor (Descriptor, Entry);

Tests:
  Pass build and boot to shell.

Cc: Hao Wu <hao.a.wu@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>
2018-10-30 10:16:03 +08:00
..
Dxe MdeModulePkg/Core: fix an issue of potential NULL pointer access 2018-10-30 10:16:03 +08:00
DxeIplPeim MdeModulePkg/DxeIpl: support more NX related PCDs 2018-09-26 08:55:10 +08:00
Pei MdeModulePkg PeiCore: Always use PeiImageRead() function to load PEI image 2018-09-07 21:39:26 +08:00
PiSmmCore MdeModulePkg: remove PE/COFF header workaround for ELILO on IPF 2018-09-24 16:56:32 +02:00
RuntimeDxe MdeModulePkg: Removing ipf which is no longer supported from edk2. 2018-09-06 15:25:16 +08:00