diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index f3c25d9f8ec6188618d777cc695890f8c32cf7f4..7a9a4d7a019273650b700ccc7ca7a90bcd6e6034 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -965,7 +965,7 @@ static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp,
 		if ((param->min && *param->min > tmp) ||
 		    (param->max && *param->max < tmp))
 			return -EINVAL;
-		*valp = tmp;
+		WRITE_ONCE(*valp, tmp);
 	}
 
 	return 0;