diff --git a/io_uring/sqpoll.c b/io_uring/sqpoll.c
index 824db6f6ba23..545789386d52 100644
--- a/io_uring/sqpoll.c
+++ b/io_uring/sqpoll.c
@@ -406,6 +406,8 @@ __cold int io_sq_offload_create(struct io_ring_ctx *ctx,
 			int cpu = p->sq_thread_cpu;
 
 			ret = -EINVAL;
+			if (cpu >= nr_cpu_ids || !cpu_online(cpu))
+				goto err_sqpoll;
 			cpuset_cpus_allowed(current, &allowed_mask);
 			if (!cpumask_test_cpu(cpu, &allowed_mask))
 				goto err_sqpoll;