rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P13514 (detected by 1, t=10502 jiffies, g=246937, q=1820 ncpus=2) task:syz.0.13417 state:R running task stack:24048 pid:13514 ppid:9442 flags:0x0000400c Call Trace: