INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 0, t=10502 jiffies, g=24800, c=24799, q=1660)
All QSes seen, last rcu_preempt kthread activity 10500 (4295018099-4295007599), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.2  R  running task    27536 32707   6353 0x00000008
Call Trace:
 <IRQ>
 sched_show_task kernel/sched/core.c:5168 [inline]
 sched_show_task.cold+0x2e3/0x347 kernel/sched/core.c:5143
 print_other_cpu_stall kernel/rcu/tree.c:1501 [inline]
 check_cpu_stall kernel/rcu/tree.c:1616 [inline]
 __rcu_pending kernel/rcu/tree.c:3390 [inline]
 rcu_pending kernel/rcu/tree.c:3452 [inline]
 rcu_check_callbacks.cold+0xd3f/0xdaa kernel/rcu/tree.c:2792
 update_process_times+0x29/0x60 kernel/time/timer.c:1590
 tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
 tick_sched_timer+0x3e/0x120 kernel/time/tick-sched.c:1223
 __run_hrtimer kernel/time/hrtimer.c:1223 [inline]
 __hrtimer_run_queues+0x25c/0xbb0 kernel/time/hrtimer.c:1287
 hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
 smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:kasan_unpoison_shadow+0x38/0x40 mm/kasan/kasan.c:75
RSP: 0018:ffff8880aea076b8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: ffffed1008f534d9 RBX: ffffed1008f534de RCX: 0000000000000000
RDX: 0000000000000005 RSI: 0000000000000000 RDI: ffffed1008f534de
RBP: 0000000000000000 R08: ffff88808946edb0 R09: ffffed1008f534d9
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000001089220
R13: ffff888047a9a6ef R14: ffff88812fe4adc0 R15: ffff888047a9a6ef
 kasan_kmalloc+0x45/0xe0 mm/kasan/kasan.c:546
 slab_post_alloc_hook mm/slab.h:442 [inline]
 slab_alloc mm/slab.c:3390 [inline]
 kmem_cache_alloc+0x114/0x770 mm/slab.c:3550
 kmem_cache_zalloc include/linux/slab.h:651 [inline]
 fill_pool lib/debugobjects.c:110 [inline]
 __debug_object_init+0x5b7/0x830 lib/debugobjects.c:341
 debug_timer_init kernel/time/timer.c:687 [inline]
 debug_init kernel/time/timer.c:736 [inline]
 init_timer_key+0x2a/0x2f0 kernel/time/timer.c:780
 neigh_alloc net/core/neighbour.c:336 [inline]
 __neigh_create+0x452/0x1980 net/core/neighbour.c:499
 ip6_finish_output2+0xa8e/0x2150 net/ipv6/ip6_output.c:117
 ip6_finish_output+0x4d9/0xaf0 net/ipv6/ip6_output.c:154
 NF_HOOK_COND include/linux/netfilter.h:239 [inline]
 ip6_output+0x1c9/0x650 net/ipv6/ip6_output.c:171
 dst_output include/net/dst.h:462 [inline]
 NF_HOOK include/linux/netfilter.h:250 [inline]
 ndisc_send_skb+0xb56/0x11e0 net/ipv6/ndisc.c:483
 ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677
 addrconf_rs_timer+0x289/0x5a0 net/ipv6/addrconf.c:3765
 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
 expire_timers kernel/time/timer.c:1318 [inline]
 __run_timers kernel/time/timer.c:1636 [inline]
 __run_timers kernel/time/timer.c:1604 [inline]
 run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649
 __do_softirq+0x254/0x9bf kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x15b/0x1a0 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0010:__sanitizer_cov_trace_pc+0x3d/0x50 kernel/kcov.c:87
RSP: 0018:ffff88804aaa7908 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000040000 RBX: ffff8880526250c8 RCX: ffffc90007af8000
RDX: 0000000000017871 RSI: ffffffff81902e79 RDI: ffff8880838e3a24
RBP: ffff8880838e39a0 R08: 0000000000005062 R09: ffffffff8a087b50
R10: ffff88808946ed00 R11: ffff88808946e400 R12: ffff8880838e39a0
R13: ffff8880838e3a20 R14: 0000000000000000 R15: ffffed101071c73e
 __d_add fs/dcache.c:2618 [inline]
 d_add+0x429/0x630 fs/dcache.c:2653
 proc_pident_instantiate+0x1d1/0x280 fs/proc/base.c:2462
 proc_pident_lookup+0x17a/0x1f0 fs/proc/base.c:2498
 lookup_open+0x5d1/0x1750 fs/namei.c:3220
 do_last fs/namei.c:3334 [inline]
 path_openat+0x1878/0x3c50 fs/namei.c:3569
 do_filp_open+0x18e/0x250 fs/namei.c:3603
 do_sys_open+0x29d/0x3f0 fs/open.c:1081
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x416621
RSP: 002b:00007f38a02fabb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000509560 RCX: 0000000000416621