rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6734
rcu: 	(detected by 1, t=10502 jiffies, g=10241, q=3045 ncpus=2)
task:syz.0.281       state:R  running task     stack:24632 pid:6734  tgid:6733  ppid:5830   task_flags:0x400140 flags:0x00080012
Call Trace:
 <IRQ>
 sched_show_task+0x4aa/0x5f0
 print_other_cpu_stall+0xfcc/0x1380
 rcu_sched_clock_irq+0x99f/0x1130
 update_process_times+0x23b/0x2f0
 tick_nohz_handler+0x42b/0x770
 __hrtimer_run_queues+0x4dc/0xc30
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x102/0x3d0
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:kasan_byte_accessible+0x0/0x30
Code: 04 eb 92 4d 01 f3 49 83 c3 05 eb 89 bb 06 00 00 00 e9 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df 0f b6 04 07
RSP: 0018:ffffc90000a08aa0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8b7b6aee RCX: 0000000000000303
RDX: 0000000000000000 RSI: ffffffff8b7b6aee RDI: ffff88801ed95580
RBP: ffffffff8a2176fd R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000141168 R12: 0000000000000002
R13: ffff88801ed95580 R14: ffff88801ed95580 R15: 0000000000000001
 __kasan_check_byte+0x12/0x40
 lock_acquire+0x84/0x330
 _raw_read_lock_bh+0x3e/0x50
 ipv6_get_lladdr+0x15d/0x3f0
 addrconf_rs_timer+0x337/0x6d0
 call_timer_fn+0x192/0x5a0
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x7c0
 __irq_exit_rcu+0x5f/0x150
 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+0x241/0x920
Code: 0f 84 bd 01 00 00 48 85 db 0f 85 e4 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 29 82 e8 09 e8 64 84 37 00 fb 4c 8b 65 c0 <49> 8d bc 24 48 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc90005efee78 EFLAGS: 00000202
RAX: 00000000000015b5 RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8dad37f0 RDI: ffffffff8be74080
RBP: ffffc90005efeed0 R08: ffffffff8fced877 R09: 1ffffffff1f9db0e
R10: dffffc0000000000 R11: fffffbfff1f9db0f R12: ffff88810a9eba80
R13: dffffc0000000000 R14: ffff888160aa8000 R15: ffff88823c63b498
 __schedule+0x14f7/0x4fb0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x597/0x620
 asm_sysvec_reschedule_ipi+0x1a/0x20
RIP: 0010:unwind_next_frame+0xbd/0x23c0
Code: bc 24 90 00 00 00 e8 52 47 34 00 4c 8d 3d 00 00 00 00 48 c7 c7 a0 a3 35 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 41 57 <e8> 3e 6f 2a 00 48 83 c4 08 e8 85 13 04 0a 85 c0 74 3a e8 8c 94 33
RSP: 0018:ffffc90005eff210 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffffff8174e9d7 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e35a3a0
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90005eff348 R11: fffff52000bdfe75 R12: 1ffff92000bdfe69
R13: ffffc90005eff380 R14: ffffc90005eff348 R15: ffffffff8174c0e5
 __unwind_start+0x5b8/0x760
 arch_stack_walk+0xe3/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_lru_noprof+0x35f/0x6c0
 __d_alloc+0x37/0x6f0
 d_alloc_parallel+0xe6/0x1610
 path_openat+0xcab/0x3e20
 do_filp_open+0x22d/0x490
 do_sys_openat2+0x12f/0x220
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f439f59acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f43a03ed028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f439f815fa0 RCX: 00007f439f59acb9
RDX: 000000000000275a RSI: 00002000000001c0 RDI: ffffffffffffff9c
RBP: 00007f439f608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000604 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f439f816038 R14: 00007f439f815fa0 R15: 00007fffc476f788
 </TASK>
sched: DL replenish lagged too much
