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Date: Wed,  8 Feb 2017 11:55:38 +0000
From: Ard Biesheuvel <ard.biesheuvel@...aro.org>
To: linux-efi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	mark.rutland@....com,
	leif.lindholm@...aro.org
Cc: catalin.marinas@....com,
	linux@...linux.org.uk,
	kernel-hardening@...ts.openwall.com,
	labbott@...oraproject.org,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>
Subject: [PATCH v2 05/14] arm64: efi: remove forbidden values from the PE/COFF header

Bring the PE/COFF header in line with the PE/COFF spec, by setting
NumberOfSymbols to 0, and removing the section alignment flags.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
---
 arch/arm64/kernel/efi-header.S | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/kernel/efi-header.S b/arch/arm64/kernel/efi-header.S
index 9b24ce130afb..515624bbfcd0 100644
--- a/arch/arm64/kernel/efi-header.S
+++ b/arch/arm64/kernel/efi-header.S
@@ -15,7 +15,7 @@ coff_header:
 	.short	2					// nr_sections
 	.long	0 					// TimeDateStamp
 	.long	0					// PointerToSymbolTable
-	.long	1					// NumberOfSymbols
+	.long	0					// NumberOfSymbols
 	.short	section_table - optional_header		// SizeOfOptionalHeader
 	.short	0x206					// Characteristics.
 							// IMAGE_FILE_DEBUG_STRIPPED |
@@ -88,7 +88,7 @@ section_table:
 	.long	0					// PointerToLineNumbers
 	.short	0					// NumberOfRelocations
 	.short	0					// NumberOfLineNumbers
-	.long	0x42100040				// Characteristics (section flags)
+	.long	0x42000040				// Characteristics (section flags)
 
 
 	.ascii	".text"
@@ -104,7 +104,7 @@ section_table:
 	.long	0					// PointerToLineNumbers
 	.short	0					// NumberOfRelocations
 	.short	0					// NumberOfLineNumbers
-	.long	0xe0500020				// Characteristics
+	.long	0xe0000020				// Characteristics
 
 #ifdef CONFIG_DEBUG_EFI
 	/*
-- 
2.7.4

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