Kernel memory leak via orphaned io_wqe allocation

Memory leak in Linux kernel 5.14 through 6.0.3 allows local users to consume kernel heap memory via io_uring_setup worker creation. In io_wq_create, CPU-mask allocation failure leaves the current node's io_wqe allocation outside the wqes array, so the error path never frees it. Reachability requires a local io_uring_setup call and a CPU-mask allocation failure; the documented result is a 1,024-byte leaked kernel object, not code execution.