From: Paul E. McKenney Date: Mon, 29 Dec 2025 19:13:53 +0000 (-0800) Subject: rcutorture: Add context checks to rcu_torture_timer() X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8a534a6718c3ac99823a61230139555672112a1;p=thirdparty%2Fkernel%2Flinux.git rcutorture: Add context checks to rcu_torture_timer() This commit adds irq, NMI, and softirq context checks to the rcu_torture_timer() function. Just because you are paranoid does not mean that they are not out to get you... ;-) Signed-off-by: Paul E. McKenney Signed-off-by: Boqun Feng --- diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 07e51974b06bc..d24b5c199e3bc 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -2455,6 +2455,9 @@ static DEFINE_TORTURE_RANDOM_PERCPU(rcu_torture_timer_rand); */ static void rcu_torture_timer(struct timer_list *unused) { + WARN_ON_ONCE(!in_serving_softirq()); + WARN_ON_ONCE(in_hardirq()); + WARN_ON_ONCE(in_nmi()); atomic_long_inc(&n_rcu_torture_timers); (void)rcu_torture_one_read(this_cpu_ptr(&rcu_torture_timer_rand), -1);