rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P3784/1:b..l (detected by 0, t=10502 jiffies, g=5481, q=1031) task:syz.1.41 state:R running task stack:25208 pid: 3784 ppid: 3577 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5027 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6549 preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6574 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34 __local_bh_enable_ip+0x175/0x1f0 kernel/softirq.c:390 rcu_read_unlock_bh include/linux/rcupdate.h:809 [inline] __dev_queue_xmit+0x1bf8/0x32b0 net/core/dev.c:4279 __bpf_tx_skb net/core/filter.c:2118 [inline] __bpf_redirect_no_mac net/core/filter.c:2152 [inline] __bpf_redirect+0x79c/0xe90 net/core/filter.c:2175 ____bpf_clone_redirect net/core/filter.c:2442 [inline] bpf_clone_redirect+0x249/0x360 net/core/filter.c:2414 bpf_prog_0603bb54b9d884a9+0x56/0xa2c bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] bpf_test_run+0x3f4/0x8a0 net/bpf/test_run.c:119 bpf_prog_test_run_skb+0xb41/0x1420 net/bpf/test_run.c:669 bpf_prog_test_run+0x32f/0x3a0 kernel/bpf/syscall.c:3368 __sys_bpf+0x3ac/0x670 kernel/bpf/syscall.c:4669 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline] __se_sys_bpf kernel/bpf/syscall.c:4753 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f4174e46ff9 RSP: 002b:00007f41732bf038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f4174ffef80 RCX: 00007f4174e46ff9 RDX: 000000000000002c RSI: 0000000020000080 RDI: 000000000000000a RBP: 00007f4174eb9296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f4174ffef80 R15: 00007fffd5107798