arm64: standardize mmap_rnd() usage

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In preparation for splitting out ET_DYN ASLR, this refactors the use of
mmap_rnd() to be used similarly to arm and x86.  This additionally
enables mmap ASLR on legacy mmap layouts, which appeared to be missing
on arm64, and was already supported on arm.  Additionally removes a
copy/pasted declaration of an unused function.

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Kees Cook 2015-04-14 15:47:48 -07:00 • committed by Linus Torvalds

parent 82168140bc

commit dd04cff1dc

2 changed files with 11 additions and 8 deletions

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1

arch/arm64/include/asm/elf.h

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18

arch/arm64/mm/mmap.c

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