]> git.baikalelectronics.ru Git - kernel.git/commit
powerpc: Randomise the brk region
authorAnton Blanchard <anton@samba.org>
Sun, 22 Feb 2009 01:50:04 +0000 (01:50 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Mon, 23 Feb 2009 04:53:20 +0000 (15:53 +1100)
commita4497235463a75fb54961a8a83b1b067759d7287
tree289e0c461cb651d041a2f1df359d88f285b82b4d
parent2200878903a088c5be9dd6fda439ba261c72b696
powerpc: Randomise the brk region

Randomize the heap.

before:
tundro2:~ # sleep 1 & cat /proc/${!}/maps | grep heap
10017000-10118000 rw-p 10017000 00:00 0                                  [heap]
10017000-10118000 rw-p 10017000 00:00 0                                  [heap]
10017000-10118000 rw-p 10017000 00:00 0                                  [heap]
10017000-10118000 rw-p 10017000 00:00 0                                  [heap]
10017000-10118000 rw-p 10017000 00:00 0                                  [heap]

after
tundro2:~ # sleep 1 & cat /proc/${!}/maps | grep heap
19419000-1951a000 rw-p 19419000 00:00 0                                  [heap]
325ff000-32700000 rw-p 325ff000 00:00 0                                  [heap]
1a97c000-1aa7d000 rw-p 1a97c000 00:00 0                                  [heap]
1cc60000-1cd61000 rw-p 1cc60000 00:00 0                                  [heap]
1afa9000-1b0aa000 rw-p 1afa9000 00:00 0                                  [heap]

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/include/asm/elf.h
arch/powerpc/kernel/process.c