rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P7293
rcu: 	(detected by 1, t=10502 jiffies, g=12365, q=4086 ncpus=2)
task:syz.2.490       state:R  running task     stack:26488 pid:7293  tgid:7292  ppid:5853   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:unwind_get_return_address+0x0/0x90
Code: f7 49 89 f7 e8 31 61 b0 00 4c 89 f7 4c 89 fe e9 29 ff ff ff e8 61 77 06 0a 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 41 57 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900001e0440 EFLAGS: 00000202
RAX: 0000000090c5fb01 RBX: ffffc900001e0500 RCX: 438b51405186c000
RDX: 0000000000000004 RSI: ffffffff8dba5cac RDI: ffffc900001e0448
RBP: ffffc900001e04d0 R08: ffffc900001e0ab0 R09: 0000000000000000
R10: ffffc900001e0498 R11: fffff5200003c095 R12: ffff8881085d1cc0
R13: ffff88810fabf380 R14: ffffffff81ac3930 R15: ffffc900001e0448
 arch_stack_walk+0xfc/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x230/0x3d0
 dst_cow_metrics_generic+0x56/0x1c0
 icmp6_dst_alloc+0x264/0x420
 ndisc_send_skb+0x41f/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
 __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:kasan_check_range+0x1d3/0x2c0
Code: 4d 01 f3 49 8d 5c 24 07 4d 85 e4 49 0f 49 dc 48 83 e3 f8 49 29 dc 74 12 41 80 3b 00 0f 85 b8 00 00 00 49 ff c3 49 ff cc 75 ee <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 45 84 ff 75 63 41
RSP: 0018:ffffc9000822f260 EFLAGS: 00000256
RAX: 1ffff110210ba401 RBX: 0000000000000000 RCX: ffffffff8191174b
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88802068b5c0
RBP: ffffc9000822f2f0 R08: ffff88802068b5c3 R09: 1ffff110040d16b8
R10: dffffc0000000000 R11: ffffed10040d16b9 R12: 0000000000000001
R13: dffffc0000000000 R14: ffffed10040d16b9 R15: 1ffff110040d16b8
 finish_task_switch+0x32b/0x950
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__read_once_word_nocheck+0x0/0x10
Code: e8 b5 30 b0 00 48 ba 00 00 00 00 00 fc ff df e9 88 fc ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> 8b 07 c3 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90
RSP: 0018:ffffc9000822f690 EFLAGS: 00000202
RAX: ffffc9000822fb01 RBX: ffffc9000822fb00 RCX: 1ffff92001045e01
RDX: ffffffff9040810e RSI: 0000000000000002 RDI: ffffc9000822fb00
RBP: 1ffff92001045eee R08: 0000000000000013 R09: ffffffff8172c195
R10: ffffc9000822f7b8 R11: ffffffff81ac3930 R12: ffffc90008230000
R13: 1ffff92001045eef R14: ffffc9000822f768 R15: ffffc90008228000
 unwind_next_frame+0xc3c/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 tomoyo_realpath_from_path+0xe3/0x5d0
 tomoyo_path_number_perm+0x1e8/0x5a0
 security_file_ioctl+0xcb/0x2d0
 __se_sys_ioctl+0x47/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f075bb8ebe9
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:00007f075ca62038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f075bdb5fa0 RCX: 00007f075bb8ebe9
RDX: 00002000000013c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007f075bc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f075bdb6038 R14: 00007f075bdb5fa0 R15: 00007ffed7bc9d68
 </TASK>
