rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6786 (detected by 1, t=10502 jiffies, g=25673, q=2700 ncpus=2) task:syz.0.699 state:R running task stack:24496 pid:6786 ppid:4281 flags:0x0000400c Call Trace: