[RFC PATCH v1 48/50] arch/arm/kernel/process.c: Use get_random_max32() for sigpage_addr()
From: George Spelvin <hidden>
Date: 2020-03-28 16:44:12
Also in:
lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Which is faster and less biased than get_random_int() % range Signed-off-by: George Spelvin <redacted> Cc: Nathan Lynch <redacted> Cc: Dmitry Safonov <redacted> 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
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel