From 596f856c13fb9f3a6afb17573a762c6f02654a92 Mon Sep 17 00:00:00 2001
From: Oliver Smith-Denny <osde@linux.microsoft.com>
Date: Fri, 29 Mar 2024 13:21:28 -0700
Subject: [PATCH] MdeModulePkg: ImagePropertiesRecordLib: Consolidate Usage
Currently, there are multiple instances of code create image
records. ImagePropertiesRecordLib was created to only have
this code in one place. Update the lib to use additional
logic from the copy in MemoryProtection.c before converging
that code to use the lib.
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Taylor Beebe <taylor.d.beebe@gmail.com>
Acked-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com>
---
.../ImagePropertiesRecordLib.c | 82 ++++++++++++++-----
1 file changed, 63 insertions(+), 19 deletions(-)
diff --git a/MdeModulePkg/Library/ImagePropertiesRecordLib/ImagePropertiesRecordLib.c b/MdeModulePkg/Library/ImagePropertiesRecordLib/ImagePropertiesRecordLib.c
index 763a8d65d5..3ac043f980 100644
--- a/MdeModulePkg/Library/ImagePropertiesRecordLib/ImagePropertiesRecordLib.c
+++ b/MdeModulePkg/Library/ImagePropertiesRecordLib/ImagePropertiesRecordLib.c
@@ -60,6 +60,39 @@ EfiSizeToPages (
return RShiftU64 (Size, EFI_PAGE_SHIFT) + ((((UINTN)Size) & EFI_PAGE_MASK) ? 1 : 0);
}
+/**
+ Frees the memory for each ImageRecordCodeSection within an ImageRecord
+ and removes the entries from the list. It does not free the ImageRecord
+ itself.
+
+ @param[in] ImageRecord The ImageRecord in which to free code sections
+**/
+STATIC
+VOID
+FreeImageRecordCodeSections (
+ IMAGE_PROPERTIES_RECORD *ImageRecord
+ )
+{
+ LIST_ENTRY *CodeSegmentListHead;
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION *ImageRecordCodeSection;
+
+ if (ImageRecord == NULL) {
+ return;
+ }
+
+ CodeSegmentListHead = &ImageRecord->CodeSegmentList;
+ while (!IsListEmpty (CodeSegmentListHead)) {
+ ImageRecordCodeSection = CR (
+ CodeSegmentListHead->ForwardLink,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION,
+ Link,
+ IMAGE_PROPERTIES_RECORD_CODE_SECTION_SIGNATURE
+ );
+ RemoveEntryList (&ImageRecordCodeSection->Link);
+ FreePool (ImageRecordCodeSection);
+ }
+}
+
/**
Sort memory map entries based upon PhysicalStart from low to high.
@@ -993,6 +1026,7 @@ CreateImagePropertiesRecord (
UINT8 *Name;
UINT32 SectionAlignment;
UINT32 PeCoffHeaderOffset;
+ CHAR8 *PdbPointer;
if ((ImageRecord == NULL) || (ImageBase == NULL)) {
return EFI_INVALID_PARAMETER;
@@ -1016,6 +1050,11 @@ CreateImagePropertiesRecord (
InitializeListHead (&ImageRecord->Link);
InitializeListHead (&ImageRecord->CodeSegmentList);
+ PdbPointer = PeCoffLoaderGetPdbPointer ((VOID *)(UINTN)ImageBase);
+ if (PdbPointer != NULL) {
+ DEBUG ((DEBUG_ERROR, " Image - %a\n", PdbPointer));
+ }
+
// Check PE/COFF image
DosHdr = (EFI_IMAGE_DOS_HEADER *)(UINTN)ImageBase;
PeCoffHeaderOffset = 0;
@@ -1084,7 +1123,8 @@ CreateImagePropertiesRecord (
// Record code section(s)
ImageRecordCodeSection = AllocatePool (sizeof (*ImageRecordCodeSection));
if (ImageRecordCodeSection == NULL) {
- return EFI_OUT_OF_RESOURCES;
+ Status = EFI_OUT_OF_RESOURCES;
+ goto CreateImagePropertiesRecordEnd;
}
ImageRecordCodeSection->Signature = IMAGE_PROPERTIES_RECORD_CODE_SECTION_SIGNATURE;
@@ -1103,6 +1143,27 @@ CreateImagePropertiesRecord (
SortImageRecordCodeSection (ImageRecord);
}
+ //
+ // Check overlap all section in ImageBase/Size
+ //
+ if (!IsImageRecordCodeSectionValid (ImageRecord)) {
+ DEBUG ((DEBUG_ERROR, "IsImageRecordCodeSectionValid - FAIL\n"));
+ Status = EFI_INVALID_PARAMETER;
+ goto CreateImagePropertiesRecordEnd;
+ }
+
+ //
+ // Round up the ImageSize, some CPU arch may return EFI_UNSUPPORTED if ImageSize is not aligned.
+ // Given that the loader always allocates full pages, we know the space after the image is not used.
+ //
+ ImageRecord->ImageSize = ALIGN_VALUE (ImageRecord->ImageSize, EFI_PAGE_SIZE);
+
+CreateImagePropertiesRecordEnd:
+ if (EFI_ERROR (Status)) {
+ // we failed to create a valid record, free the section memory that was allocated
+ FreeImageRecordCodeSections (ImageRecord);
+ }
+
return Status;
}
@@ -1119,24 +1180,7 @@ DeleteImagePropertiesRecord (
IN IMAGE_PROPERTIES_RECORD *ImageRecord
)
{
- LIST_ENTRY *CodeSegmentListHead;
- IMAGE_PROPERTIES_RECORD_CODE_SECTION *ImageRecordCodeSection;
-
- if (ImageRecord == NULL) {
- return;
- }
-
- CodeSegmentListHead = &ImageRecord->CodeSegmentList;
- while (!IsListEmpty (CodeSegmentListHead)) {
- ImageRecordCodeSection = CR (
- CodeSegmentListHead->ForwardLink,
- IMAGE_PROPERTIES_RECORD_CODE_SECTION,
- Link,
- IMAGE_PROPERTIES_RECORD_CODE_SECTION_SIGNATURE
- );
- RemoveEntryList (&ImageRecordCodeSection->Link);
- FreePool (ImageRecordCodeSection);
- }
+ FreeImageRecordCodeSections (ImageRecord);
if (!IsListEmpty (&ImageRecord->Link)) {
RemoveEntryList (&ImageRecord->Link);