| Message ID | 20241009180253.777965-3-paulmck@kernel.org (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 246a5cd2bfd381c88cbd7365ac57fd114b67af62 |
| Headers | show |
| Series | Torture-test changes for v6.13 | expand |
diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c index 639d1cfc657b2..af32331ef645a 100644 --- a/kernel/rcu/refscale.c +++ b/kernel/rcu/refscale.c @@ -863,7 +863,7 @@ ref_scale_reader(void *arg) goto end; // Make sure that the CPU is affinitized appropriately during testing. - WARN_ON_ONCE(raw_smp_processor_id() != me); + WARN_ON_ONCE(raw_smp_processor_id() != me % nr_cpu_ids); WRITE_ONCE(rt->start_reader, 0); if (!atomic_dec_return(&n_started))
The current affinity check works fine until there are more reader processes than CPUs, at which point the affinity check is looking for non-existent CPUs. This commit therefore applies the same modulus to the check as is present in the set_cpus_allowed_ptr() call. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> --- kernel/rcu/refscale.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)