GSD-2022-1004686 perf/core: Fix data race between perf_event_set_output() and perf_mmap_close()

perf/core: Fix data race between perfeventsetoutput and perfmmapclose This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.208 by commit...