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 v4.19.195 by commit db72bdb5c7981e7f1f7ffb46282e784292e7f112, it was introduced in version v2.6.39 by commit fe4b04fa31a6dcf4358aa84cf81e5a7fd079469b. For more details please see the references link.