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>

diff --git a/arch/arm/boot/compressed/efi-header.S b/arch/arm/boot/compressed/efi-header.S
index a17ca8d78656d1012910ffb8a37b3433720a8d44..4169b900d9d45ce0caafe3438aa3c4fafcfbf3e9 100644 (file)
--- 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: