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Subject[tip:efi/core] arm/efi: Remove forbidden values from the PE/COFF header
Commit-ID:  4415f9f4a6e5c6a4228098fc8289f21f3dda515c
Gitweb: http://git.kernel.org/tip/4415f9f4a6e5c6a4228098fc8289f21f3dda515c
Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
AuthorDate: Fri, 18 Aug 2017 20:49:41 +0100
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Mon, 21 Aug 2017 09:43:50 +0200

arm/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@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20170818194947.19347-9-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
arch/arm/boot/compressed/efi-header.S | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/compressed/efi-header.S b/arch/arm/boot/compressed/efi-header.S
index a17ca8d..4169b90 100644
--- a/arch/arm/boot/compressed/efi-header.S
+++ b/arch/arm/boot/compressed/efi-header.S
@@ -44,7 +44,7 @@ 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 0x306 @ Characteristics.
@@ -110,7 +110,7 @@ section_table:
.long 0 @ PointerToLineNumbers
.short 0 @ NumberOfRelocations
.short 0 @ NumberOfLineNumbers
- .long 0x42100040 @ Characteristics
+ .long 0x42000040 @ Characteristics

.ascii ".text\0\0\0"
.long _end - __efi_start @ VirtualSize
@@ -121,7 +121,7 @@ section_table:
.long 0 @ PointerToLineNumbers
.short 0 @ NumberOfRelocations
.short 0 @ NumberOfLineNumbers
- .long 0xe0500020 @ Characteristics
+ .long 0xe0000020 @ Characteristics

.align 9
__efi_start:
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