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authorJason Cooper <jason@lakedaemon.net>2016-10-11 23:54:08 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-12 01:06:32 +0300
commit05c2679e9562f7e9ca11dacc91cf21b6c42d532d (patch)
tree4169d10241187f0c4fad97841619a041216a08d6 /arch/unicore32
parent09fddbaf90aa9fc0abd80332a191fbfd0158e22b (diff)
downloadlinux-05c2679e9562f7e9ca11dacc91cf21b6c42d532d.tar.xz
unicore32: use simpler API for random address requests
Currently, all callers to randomize_range() set the length to 0 and calculate end by adding a constant to the start address. We can simplify the API to remove a bunch of needless checks and variables. Use the new randomize_addr(start, range) call to set the requested address. Link: http://lkml.kernel.org/r/20160803233913.32511-7-jason@lakedaemon.net Signed-off-by: Jason Cooper <jason@lakedaemon.net> Acked-by: Kees Cook <keescook@chromium.org> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/unicore32')
-rw-r--r--arch/unicore32/kernel/process.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/unicore32/kernel/process.c b/arch/unicore32/kernel/process.c
index 00299c927852..d7c6b676b3a5 100644
--- a/arch/unicore32/kernel/process.c
+++ b/arch/unicore32/kernel/process.c
@@ -295,8 +295,7 @@ unsigned long get_wchan(struct task_struct *p)
unsigned long arch_randomize_brk(struct mm_struct *mm)
{
- unsigned long range_end = mm->brk + 0x02000000;
- return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
+ return randomize_page(mm->brk, 0x02000000);
}
/*