Re: [edk2-devel] [PATCH] UefiPayloadPkg: Fix Coverity report defect

["Guo Dong" <guo.dong@intel.com>]

Reviewed-by: Guo Dong <guo.dong@intel.com>

-----Original Message-----
From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of GregX Yeh
Sent: Wednesday, August 10, 2022 11:46 PM
To: devel@edk2.groups.io
Cc: Yeh, GregX <gregx.yeh@intel.com>; Dong, Guo <guo.dong@intel.com>; Ni, Ray <ray.ni@intel.com>
Subject: [edk2-devel] [PATCH] UefiPayloadPkg: Fix Coverity report defect

From: Gregx Yeh <gregx.yeh@intel.com>

https://bugzilla.tianocore.org/show_bug.cgi?id=4018
Coverity report FORWARD_NULL and OVERFLOW_BEFORE_WIDEN potential defect in UefiPayloadPkg.

Signed-off-by: Gregx Yeh <gregx.yeh@intel.com>
Cc: Guo Dong <guo.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
---
 UefiPayloadPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c | 4 ++--
 UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLib.c           | 2 +-
 UefiPayloadPkg/UefiPayloadEntry/X64/VirtualMemory.c        | 4 ++--
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/UefiPayloadPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c b/UefiPayloadPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
index 9847063d3d..790e6109c0 100644
--- a/UefiPayloadPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
+++ b/UefiPayloadPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
@@ -232,11 +232,11 @@ PciHostBridgeFreeRootBridges (
   UINTN            Count   ) {-  if ((Bridges == NULL) && (Count == 0)) {+  if ((Bridges == NULL) || (Count == 0)) {     return;   } -  ASSERT (Bridges != NULL && Count > 0);+  ASSERT (Bridges != NULL || Count > 0);    do {     --Count;diff --git a/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLib.c b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLib.c
index 2a6305c67b..a9bf6f3223 100644
--- a/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLib.c
+++ b/UefiPayloadPkg/PayloadLoaderPeim/ElfLib/ElfLib.c
@@ -149,7 +149,7 @@ CalculateElfFileSize (
     FileSize2 = Elf32Hdr->e_shoff + Elf32Hdr->e_shentsize * Elf32Hdr->e_shnum;   } else if (ElfCt->EiClass == ELFCLASS64) {     Elf64Hdr  = (Elf64_Ehdr *)ElfCt->FileBase;-    FileSize2 = (UINTN)(Elf64Hdr->e_shoff + Elf64Hdr->e_shentsize * Elf64Hdr->e_shnum);+    FileSize2 = ((UINTN)Elf64Hdr->e_shoff + (UINTN)(Elf64Hdr->e_shentsize * Elf64Hdr->e_shnum));   }    *FileSize = MAX (FileSize1, FileSize2);diff --git a/UefiPayloadPkg/UefiPayloadEntry/X64/VirtualMemory.c b/UefiPayloadPkg/UefiPayloadEntry/X64/VirtualMemory.c
index 74b667a62a..8d8a9d0ca8 100644
--- a/UefiPayloadPkg/UefiPayloadEntry/X64/VirtualMemory.c
+++ b/UefiPayloadPkg/UefiPayloadEntry/X64/VirtualMemory.c
@@ -783,9 +783,9 @@ CreateIdentityMappingPageTables (
   // Pre-allocate big pages to avoid later allocations.   //   if (!Page1GSupport) {-    TotalPagesNum = ((NumberOfPdpEntriesNeeded + 1) * NumberOfPml4EntriesNeeded + 1) * NumberOfPml5EntriesNeeded + 1;+    TotalPagesNum = (UINTN)((NumberOfPdpEntriesNeeded + 1) * NumberOfPml4EntriesNeeded + 1) * NumberOfPml5EntriesNeeded + 1;   } else {-    TotalPagesNum = (NumberOfPml4EntriesNeeded + 1) * NumberOfPml5EntriesNeeded + 1;+    TotalPagesNum = (UINTN)(NumberOfPml4EntriesNeeded + 1) * NumberOfPml5EntriesNeeded + 1;   }    //-- 
2.26.2.windows.1



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