diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-31 14:20:16 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-31 14:20:16 +0100 |
| commit | 7b70c4275f28702b76b273c8534c38f8313812e9 (patch) | |
| tree | 1df2229ca02466bd1adda814ac5c37aa0a597db1 /arch/arm/mm/mmap.c | |
| parent | ceb0885d3b01bb2e2f18765770e212914f2864be (diff) | |
| parent | a20df564d15bd28e3df24e1c65b885bd74d23f17 (diff) | |
| download | linux-7b70c4275f28702b76b273c8534c38f8313812e9.tar.bz2 | |
Merge branch 'devel-stable' into devel
Conflicts:
arch/arm/kernel/entry-armv.S
arch/arm/kernel/setup.c
arch/arm/mm/init.c
Diffstat (limited to 'arch/arm/mm/mmap.c')
| -rw-r--r-- | arch/arm/mm/mmap.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c index f5abc51c5a07..4f5b39687df5 100644 --- a/arch/arm/mm/mmap.c +++ b/arch/arm/mm/mmap.c @@ -7,6 +7,7 @@ #include <linux/shm.h> #include <linux/sched.h> #include <linux/io.h> +#include <linux/random.h> #include <asm/cputype.h> #include <asm/system.h> @@ -80,6 +81,9 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, start_addr = addr = TASK_UNMAPPED_BASE; mm->cached_hole_size = 0; } + /* 8 bits of randomness in 20 address space bits */ + if (current->flags & PF_RANDOMIZE) + addr += (get_random_int() % (1 << 8)) << PAGE_SHIFT; full_search: if (do_align) |