Bitsize for elements in circular_queue struct
configname: CONFIG_LOCKDEP_CIRCULAR_QUEUE_BITS
Linux Kernel Configuration
└─>Kernel hacking
└─>Lock Debugging (spinlocks, mutexes, etc...)
└─>Bitsize for elements in circular_queue struct
In linux kernel since version 5.2 (release Date: 2019-07-07)
Try increasing this value if you hit "lockdep bfs error:-1" warning due to __cq_enqueue() failure.