From 92980405f3537136b8e81007a9df576762f49bbb Mon Sep 17 00:00:00 2001 From: Arun Chandran Date: Fri, 10 Oct 2014 12:31:24 +0100 Subject: arm64: ASLR: Don't randomise text when randomise_va_space == 0 When user asks to turn off ASLR by writing "0" to /proc/sys/kernel/randomize_va_space there should not be any randomization to mmap base, stack, VDSO, libs, text and heap Currently arm64 violates this behavior by randomising text. Fix this by defining a constant ELF_ET_DYN_BASE. The randomisation of mm->mmap_base is done by setup_new_exec -> arch_pick_mmap_layout -> mmap_base -> mmap_rnd. Signed-off-by: Arun Chandran Signed-off-by: Catalin Marinas --- arch/arm64/kernel/process.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'arch/arm64/kernel/process.c') diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index c3065dbc4fa2..fde9923af859 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -378,8 +378,3 @@ unsigned long arch_randomize_brk(struct mm_struct *mm) { return randomize_base(mm->brk); } - -unsigned long randomize_et_dyn(unsigned long base) -{ - return randomize_base(base); -} -- cgit v1.2.2