rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5420 rcu: (detected by 1, t=10502 jiffies, g=10509, q=2173 ncpus=2) task:syz-executor.4 state:R running task stack:20464 pid:5420 tgid:5420 ppid:1 flags:0x0000400e Call Trace: