From d9eba768839ac24e47606af36e50c14f10c2211c Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Thu, 14 May 2015 15:35:43 -0700 Subject: [PATCH] rcutorture: Better bounds checking for n_barrier_cbs A negative value for rcutorture.n_barrier_cbs can pass a negative value to the memory allocator, so this commit instead causes rcu_barrier() testing to be disabled in this case. Signed-off-by: Paul E. McKenney --- kernel/rcu/rcutorture.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 59e32684c23b..7e29a3266139 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -1507,7 +1507,7 @@ static int rcu_torture_barrier_init(void) int i; int ret; - if (n_barrier_cbs == 0) + if (n_barrier_cbs <= 0) return 0; if (cur_ops->call == NULL || cur_ops->cb_barrier == NULL) { pr_alert("%s" TORTURE_FLAG