rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6438
rcu: 	(detected by 0, t=10502 jiffies, g=201373, q=3160 ncpus=2)
task:syz.2.9522      state:R  running task     stack:26480 pid:6438  tgid:6437  ppid:5626   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:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 cb b2 4c f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 53 64 15 f6 65 8b 05 1c fa 24 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc900000078e0 EFLAGS: 00000206
RAX: 845e5c4b0c7b0600 RBX: 0000000000000a02 RCX: 845e5c4b0c7b0600
RDX: 0000000000000002 RSI: ffffffff8d9b18ae RDI: 0000000000000001
RBP: ffffc90000007968 R08: ffffffff8fa32337 R09: 1ffffffff1f46466
R10: dffffc0000000000 R11: fffffbfff1f46467 R12: dffffc0000000000
R13: ffff88810fcdc770 R14: ffffffff99cec3b0 R15: 1ffff92000000f1c
 debug_object_assert_init+0x20e/0x380
 __mod_timer+0x4a/0xf30
 addrconf_mod_rs_timer+0x51/0xe0
 addrconf_rs_timer+0x45e/0x670
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:finish_task_switch+0x26b/0x950
Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 ef 84 e9 09 e8 9a 38 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc90006587778 EFLAGS: 00000286
RAX: 845e5c4b0c7b0600 RBX: 0000000000000000 RCX: 845e5c4b0c7b0600
RDX: 0000000000000006 RSI: ffffffff8d9b18ae RDI: ffffffff8be2fd00
RBP: ffffc900065877d0 R08: ffffffff8fa32337 R09: 1ffffffff1f46466
R10: dffffc0000000000 R11: fffffbfff1f46467 R12: ffff8880462f5640
R13: dffffc0000000000 R14: ffff88801c2fb980 R15: ffff88804b03ab58
 __schedule+0x17a0/0x4cc0
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 _raw_spin_unlock_irqrestore+0xfd/0x110
 __wake_up_common_lock+0x190/0x1f0
 sock_def_wakeup+0x15b/0x260
 unix_release_sock+0x75b/0xd30
 unix_release+0x92/0xd0
 sock_close+0xc3/0x240
 __fput+0x44c/0xa70
 fput_close_sync+0x119/0x200
 __x64_sys_close+0x7f/0x110
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f599a98ebe9
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:00007f599b7e5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007f599abb5fa0 RCX: 00007f599a98ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007f599aa11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f599abb6038 R14: 00007f599abb5fa0 R15: 00007ffe2e584bd8
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 105008644049 wd_nsec: 105008646455
