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MdeModulePkg/Core/Dxe: downgrade "CodeSegmentCount is 0" msg to DEBUG_WARN 

UEFI executables that consist of a single read+write+exec PE/COFF section
trigger this message, but such a binary layout isn't actually an error.
The image can be launched alright, only image protection cannot be applied
to it fully.

One example that elicits the message is (some) Linux kernels (with the EFI
stub of course).

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Laszlo Ersek 2017-03-20 11:24:23 +01:00
parent 76874be3d4
commit 38b15ebe4f
1 changed files with 10 additions and 2 deletions
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12
MdeModulePkg/Core/Dxe/Misc/MemoryProtection.c
View File

@ -580,10 +580,18 @@ ProtectUefiImageCommon (
}
if (ImageRecord->CodeSegmentCount == 0) {
DEBUG ((DEBUG_ERROR, "!!!!!!!! ProtectUefiImageCommon - CodeSegmentCount is 0 !!!!!!!!\n"));
//
// If a UEFI executable consists of a single read+write+exec PE/COFF
// section, that isn't actually an error. The image can be launched
// alright, only image protection cannot be applied to it fully.
//
// One example that elicits this is (some) Linux kernels (with the EFI stub
// of course).
//
DEBUG ((DEBUG_WARN, "!!!!!!!! ProtectUefiImageCommon - CodeSegmentCount is 0 !!!!!!!!\n"));
PdbPointer = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) ImageAddress);
if (PdbPointer != NULL) {
DEBUG ((DEBUG_ERROR, "!!!!!!!! Image - %a !!!!!!!!\n", PdbPointer));
DEBUG ((DEBUG_WARN, "!!!!!!!! Image - %a !!!!!!!!\n", PdbPointer));
}
goto Finish;
}