Fix two minor defects:

[mirror_edk2.git] / MdeModulePkg / Core / Dxe / Gcd / gcd.c

diff --git a/MdeModulePkg/Core/Dxe/Gcd/gcd.c b/MdeModulePkg/Core/Dxe/Gcd/gcd.c
index 1d023548d360601c563f26c0068c188a0e8ceb0b..3cadab29dcaa141d503fe22c3d3d83d009b80dfc 100644 (file)
--- a/MdeModulePkg/Core/Dxe/Gcd/gcd.c
+++ b/MdeModulePkg/Core/Dxe/Gcd/gcd.c
@@ -2473,6 +2473,9 @@ Returns:
       if (MemorySpaceMap[Index].ImageHandle == NULL) {\r
         BaseAddress  = PageAlignAddress (MemorySpaceMap[Index].BaseAddress);\r
         Length       = PageAlignLength  (MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length - BaseAddress);\r
+        if (Length == 0 || MemorySpaceMap[Index].BaseAddress + MemorySpaceMap[Index].Length < BaseAddress) {\r
+          continue;\r
+        }\r
         CoreAddMemoryDescriptor (\r
           EfiConventionalMemory,\r
           BaseAddress,\r