dropmonitor: fix data-race in dropmonnetevent / tracenapipollhit
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 v4.19.231 by commit e294bc65746b779e4ad50f95ed04926cf72d1454, it was introduced in version v2.6.31 by commit 4ea7e38696c7e798c47ebbecadfd392f23f814f9. For more details please see the references link.