perf: Fix data race between pin_count increment/decrement
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 v4.14.237 by commit e0e5c5ea305d21a4f8a3f8ac0b1a47fc7591d492, it was introduced in version v2.6.39 by commit fe4b04fa31a6dcf4358aa84cf81e5a7fd079469b. For more details please see the references link.