Skip runtime relocation for PE images that provide invalid relocation
infomation (ex: RelocDir->Size = 0) to fix a hang observed while booting
Windows.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Neo Hsueh <hong-chihx.hs...@intel.com>
Cc: Michael D Kinney <michael.d.kin...@intel.com>
Cc: Liming Gao <liming....@intel.com>
Cc: Dandan Bi <dandan...@intel.com>
Cc: Laszlo Ersek <ler...@redhat.com>
---
MdePkg/Library/BasePeCoffLib/BasePeCoff.c | 28 ++++++++++++++++++----------
1 file changed, 18 insertions(+), 10 deletions(-)
diff --git a/MdePkg/Library/BasePeCoffLib/BasePeCoff.c
b/MdePkg/Library/BasePeCoffLib/BasePeCoff.c
index 1bd079ad6a..3a46e626e4 100644
--- a/MdePkg/Library/BasePeCoffLib/BasePeCoff.c
+++ b/MdePkg/Library/BasePeCoffLib/BasePeCoff.c
@@ -1002,7 +1002,7 @@ PeCoffLoaderRelocateImage (
RelocDir->VirtualAddress + RelocDir->Size - 1,
TeStrippedOffset
);
- if (RelocBase == NULL || RelocBaseEnd == NULL || RelocBaseEnd < RelocBase)
{
+ if (RelocBase == NULL || RelocBaseEnd == NULL || (UINTN) RelocBaseEnd <
(UINTN) RelocBase) {
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
return RETURN_LOAD_ERROR;
}
@@ -1022,7 +1022,7 @@ PeCoffLoaderRelocateImage (
// Run the relocation information and apply the fixups
//
FixupData = ImageContext->FixupData;
- while (RelocBase < RelocBaseEnd) {
+ while ((UINTN) RelocBase < (UINTN) RelocBaseEnd) {
Reloc = (UINT16 *) ((CHAR8 *) RelocBase + sizeof
(EFI_IMAGE_BASE_RELOCATION));
//
@@ -1051,7 +1051,7 @@ PeCoffLoaderRelocateImage (
//
// Run this relocation record
//
- while (Reloc < RelocEnd) {
+ while ((UINTN) Reloc < (UINTN) RelocEnd) {
Fixup = PeCoffLoaderImageAddress (ImageContext,
RelocBase->VirtualAddress + (*Reloc & 0xFFF), TeStrippedOffset);
if (Fixup == NULL) {
ImageContext->ImageError = IMAGE_ERROR_FAILED_RELOCATION;
@@ -1741,11 +1741,19 @@ PeCoffLoaderRelocateImageForRuntime (
//
if (NumberOfRvaAndSizes > EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC) {
RelocDir = DataDirectory + EFI_IMAGE_DIRECTORY_ENTRY_BASERELOC;
- RelocBase = (EFI_IMAGE_BASE_RELOCATION *) PeCoffLoaderImageAddress
(&ImageContext, RelocDir->VirtualAddress, 0);
- RelocBaseEnd = (EFI_IMAGE_BASE_RELOCATION *) PeCoffLoaderImageAddress
(&ImageContext,
-
RelocDir->VirtualAddress + RelocDir->Size - 1,
- 0
- );
+ if ((RelocDir != NULL) && (RelocDir->Size > 0)) {
+ RelocBase = (EFI_IMAGE_BASE_RELOCATION *) PeCoffLoaderImageAddress
(&ImageContext, RelocDir->VirtualAddress, 0);
+ RelocBaseEnd = (EFI_IMAGE_BASE_RELOCATION *) PeCoffLoaderImageAddress
(&ImageContext,
+
RelocDir->VirtualAddress + RelocDir->Size - 1,
+ 0
+
);
+ }
+ if (RelocBase == NULL || RelocBaseEnd == NULL || (UINTN) RelocBaseEnd <
(UINTN) RelocBase) {
+ //
+ // relocation block is not valid, just return
+ //
+ return;
+ }
} else {
//
// Cannot find relocations, cannot continue to relocate the image, ASSERT
for this invalid image.
@@ -1769,7 +1777,7 @@ PeCoffLoaderRelocateImageForRuntime (
//
FixupData = RelocationData;
RelocBaseOrig = RelocBase;
- while (RelocBase < RelocBaseEnd) {
+ while ((UINTN) RelocBase < (UINTN) RelocBaseEnd) {
//
// Add check for RelocBase->SizeOfBlock field.
//
@@ -1794,7 +1802,7 @@ PeCoffLoaderRelocateImageForRuntime (
//
// Run this relocation record
//
- while (Reloc < RelocEnd) {
+ while ((UINTN) Reloc < (UINTN) RelocEnd) {
Fixup = PeCoffLoaderImageAddress (&ImageContext,
RelocBase->VirtualAddress + (*Reloc & 0xFFF), 0);
if (Fixup == NULL) {
--
2.16.2.windows.1
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