rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6761
rcu: 	(detected by 0, t=10502 jiffies, g=11321, q=1916 ncpus=2)
task:syz.0.240       state:R  running task     stack:23736 pid:6761  tgid:6760  ppid:5859   task_flags:0x400140 flags:0x0000400e
Call Trace:
 <IRQ>
 sched_show_task+0x49d/0x630
 print_other_cpu_stall+0xf7a/0x1340
 rcu_sched_clock_irq+0xa47/0x11b0
 update_process_times+0x23c/0x2f0
 tick_nohz_handler+0x39a/0x520
 __hrtimer_run_queues+0x4e0/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__list_add_valid_or_report+0x60/0x130
Code: 08 4c 89 e5 48 c1 ed 03 42 80 7c 2d 00 00 74 08 4c 89 e7 e8 62 9f 52 fd 4d 39 34 24 75 71 4d 89 f4 49 c1 ec 03 43 80 3c 2c 00 <74> 08 4c 89 f7 e8 46 9f 52 fd 49 39 1e 0f 85 83 00 00 00 4d 39 f7
RSP: 0018:ffffc90000006ea8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffff88804b03bf40 RCX: dffffc0000000000
RDX: ffff88804b03bf40 RSI: ffff888031645270 RDI: ffff88813656ef70
RBP: 1ffff110096077e9 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000dcc R12: 1ffff110062c8a4e
R13: dffffc0000000000 R14: ffff888031645270 R15: ffff88813656ef70
 rt_set_nexthop+0x5f3/0xa80
 ip_route_output_key_hash_rcu+0x196a/0x23e0
 ip_route_output_key_hash+0x1b9/0x2e0
 ip_route_output_flow+0x2a/0x150
 udp_tunnel_dst_lookup+0x1ba/0x3e0
 geneve_xmit+0xa99/0x2b70
 dev_hard_start_xmit+0x2d7/0x830
 __dev_queue_xmit+0x1b8d/0x3b50
 ip6_finish_output2+0x11fe/0x16a0
 ndisc_send_skb+0xb54/0x1440
 addrconf_rs_timer+0x369/0x670
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 do_softirq+0xec/0x180
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x17d/0x1c0
 bpf_test_run+0x376/0x7b0
 bpf_prog_test_run_skb+0xb30/0x1560
 bpf_prog_test_run+0x2c7/0x340
 __sys_bpf+0x581/0x870
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa6ead8eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa6ebb56038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fa6eafd5fa0 RCX: 00007fa6ead8eba9
RDX: 0000000000000050 RSI: 00002000000003c0 RDI: 000000000000000a
RBP: 00007fa6eae11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa6eafd6038 R14: 00007fa6eafd5fa0 R15: 00007ffdfbb7ea18
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 103008356477 wd_nsec: 103008357205
