Add more lock/sleep debugging to the default tester config.
Enable DEBUG_KERNEL since olddefconfig won't enable PROVE_LOCKING
without it. Enable PROVE_RCU to also check RCU usage. Enable
DEBUG_ATOMIC_SLEEP to catch those as well.
To catch locking related issues the following set of kernel config
options may be useful:
+ CONFIG_DEBUG_KERNEL=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_LOCK_ALLOC=y
+ CONFIG_DEBUG_ATOMIC_SLEEP=y
CONFIG_PROVE_LOCKING=y
+ CONFIG_PROVE_RCU=y
CONFIG_LOCKDEP=y
CONFIG_DEBUG_MUTEXES=y
CONFIG_UHID=y
+CONFIG_DEBUG_KERNEL=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_LOCK_ALLOC=y
+CONFIG_DEBUG_ATOMIC_SLEEP=y
CONFIG_PROVE_LOCKING=y
+CONFIG_PROVE_RCU=y
CONFIG_LOCKDEP=y
CONFIG_DEBUG_MUTEXES=y
CONFIG_KASAN=y