Enable all additional permissive rules


Linux Kernel Configuration
└─>Kernel hacking
└─>Generic Kernel Debugging Instruments
└─>KCSAN: dynamic data race detector
└─>Enable all additional permissive rules
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Enable additional permissive rules to ignore certain classes of data
races (also see kernel/kcsan/permissive.h). None of the permissive
rules imply that such data races are generally safe, but can be used
to further reduce reported data races due to data-racy patterns
common across the kernel.