Scenario TREE07 with CONFIG_PREEMPT_DYNAMIC=n?

Paul E. McKenney
2022-03-10T21:56:36Z

Hello, Frederic,

I recently added CONFIG_PREEMPT_DYNAMIC=n to the TREE07 file, and since
then am getting roughly one RCU CPU stall warning (or silent hang)
per few tens of hours of rcutorture testing on dual-socket systems.
The stall warnings feature starvation of RCU grace-period kthread.

Any advice on debugging this?

Thanx, Paul