Messages in this thread Patch in this message | | | From | George Spelvin <> | Date | Fri, 29 Nov 2019 18:57:36 -0500 | Subject | [RFC PATCH v1 48/50] arch/arm/kernel/process.c: Use get_random_max32() for sigpage_addr() |
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Which is faster and less biased than get_random_int() % range
Signed-off-by: George Spelvin <lkml@sdf.org> Cc: Nathan Lynch <nathan_lynch@mentor.com> Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: linux-arm-kernel@lists.infradead.org --- arch/arm/kernel/process.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 46e478fb5ea20..9f2556be33505 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -391,7 +391,7 @@ static unsigned long sigpage_addr(const struct mm_struct *mm, slots = ((last - first) >> PAGE_SHIFT) + 1; - offset = get_random_int() % slots; + offset = get_random_max32(slots); addr = first + (offset << PAGE_SHIFT); -- 2.26.0
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