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parisc: Enable KASLR

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Add missing code for userspace executable address randomization, e.g.
applications compiled with the gcc -pie option.

Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Helge Deller
2016-10-16 00:02:27 +02:00
parent 69973b8308
commit 18d98a7938
4 changed files with 14 additions and 18 deletions
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7
arch/parisc/include/asm/elf.h
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@@ -348,9 +348,10 @@ struct pt_regs; /* forward declaration... */
#define ELF_HWCAP 0
#define STACK_RND_MASK (is_32bit_task() ? \
0x7ff >> (PAGE_SHIFT - 12) : \
0x3ffff >> (PAGE_SHIFT - 12))
/* Masks for stack and mmap randomization */
#define BRK_RND_MASK (is_32bit_task() ? 0x07ffUL : 0x3ffffUL)
#define MMAP_RND_MASK (is_32bit_task() ? 0x1fffUL : 0x3ffffUL)
#define STACK_RND_MASK MMAP_RND_MASK
struct mm_struct;
extern unsigned long arch_randomize_brk(struct mm_struct *);