hrtimer: interrupt took 27584 ns
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	3-....: (10499 ticks this GP) idle=a12/1/0x4000000000000004 softirq=7483/7483 fqs=5250 
	(t=10502 jiffies g=5613 q=922)
NMI backtrace for cpu 3
CPU: 3 PID: 7965 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x197/0x210 lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x183/0x1cf kernel/rcu/tree_stall.h:254
 print_cpu_stall kernel/rcu/tree_stall.h:455 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:529 [inline]
 rcu_pending kernel/rcu/tree.c:2827 [inline]
 rcu_sched_clock_irq.cold+0x509/0xc02 kernel/rcu/tree.c:2271
 update_process_times+0x2d/0x70 kernel/time/timer.c:1726
 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:167
 tick_sched_timer+0x53/0x140 kernel/time/tick-sched.c:1310
 __run_hrtimer kernel/time/hrtimer.c:1514 [inline]
 __hrtimer_run_queues+0x364/0xe40 kernel/time/hrtimer.c:1576
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1638
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1135
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
RIP: 0010:seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline]
RIP: 0010:read_seqcount_begin include/linux/seqlock.h:164 [inline]
RIP: 0010:read_seqbegin include/linux/seqlock.h:433 [inline]
RIP: 0010:neigh_ha_snapshot include/net/neighbour.h:553 [inline]
RIP: 0010:neigh_fill_info+0x6a5/0xee0 net/core/neighbour.c:2453
Code: 00 fc ff df 48 c1 e8 03 80 3c 08 00 0f 85 0c 08 00 00 48 83 3d 73 fe 41 03 00 0f 84 08 07 00 00 e8 30 a8 a3 fb 4c 89 e7 57 9d <0f> 1f 44 00 00 e8 21 a8 a3 fb 4c 8d a3 18 01 00 00 48 b9 00 00 00
RSP: 0018:ffff88807ed094b0 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
RAX: ffff888023f90180 RBX: ffff88807cedc000 RCX: dffffc0000000000
RDX: 0000000000000100 RSI: ffffffff85d135f0 RDI: 0000000000000206
RBP: ffff88807ed095f8 R08: 1ffffffff15377b2 R09: fffffbfff15377b3
R10: fffffbfff15377b2 R11: ffffffff8a9bbd97 R12: 0000000000000206
R13: ffff88807ed095d0 R14: 0000000000000200 R15: ffff888077a72200
 __neigh_notify+0xb2/0x160 net/core/neighbour.c:3358
 neigh_cleanup_and_release+0xf6/0x430 net/core/neighbour.c:105
 neigh_del net/core/neighbour.c:197 [inline]
 neigh_remove_one+0x3ba/0x440 net/core/neighbour.c:218
 neigh_forced_gc net/core/neighbour.c:245 [inline]
 neigh_alloc net/core/neighbour.c:392 [inline]
 ___neigh_create+0x1674/0x2560 net/core/neighbour.c:580
 __neigh_create+0x2f/0x40 net/core/neighbour.c:674
 ip6_finish_output2+0x94f/0x25c0 net/ipv6/ip6_output.c:113
 __ip6_finish_output+0x444/0xaa0 net/ipv6/ip6_output.c:142
 ip6_finish_output+0x38/0x1f0 net/ipv6/ip6_output.c:152
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip6_output+0x25e/0x880 net/ipv6/ip6_output.c:175
 dst_output include/net/dst.h:436 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ndisc_send_skb+0xf1f/0x1490 net/ipv6/ndisc.c:505
 ndisc_send_rs+0x134/0x720 net/ipv6/ndisc.c:699
 addrconf_rs_timer+0x30f/0x6e0 net/ipv6/addrconf.c:3879
 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x19b/0x1e0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x4f/0x80 kernel/locking/spinlock.c:199
Code: c0 68 34 13 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d 12 6a 96 01 00 74 20 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 e7 ab d3 f9 65 8b 05 18 54 85 78 85 c0 74 06 41
RSP: 0018:ffff888022f06f78 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff122668d RBX: ffff888023f90180 RCX: 0000000000000007
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff888023f90a14
RBP: ffff888022f06f80 R08: 1ffffffff15377bb R09: fffffbfff15377bc
R10: fffffbfff15377bb R11: ffffffff8a9bbddf R12: ffff88807ed37380
R13: ffff888067e1d6c0 R14: 0000000000000000 R15: 0000000000000001
 finish_lock_switch kernel/sched/core.c:3124 [inline]
 finish_task_switch+0x147/0x750 kernel/sched/core.c:3224
 context_switch kernel/sched/core.c:3388 [inline]
 __schedule+0x8e9/0x1f30 kernel/sched/core.c:4081
 preempt_schedule_common+0x4f/0xe0 kernel/sched/core.c:4236
 preempt_schedule+0x4b/0x60 kernel/sched/core.c:4261
 ___preempt_schedule+0x16/0x18 arch/x86/entry/thunk_64.S:50
 __blk_mq_delay_run_hw_queue+0x56a/0x600 block/blk-mq.c:1437
 blk_mq_run_hw_queue+0x191/0x340 block/blk-mq.c:1473
 blk_mq_sched_insert_requests+0x303/0x680 block/blk-mq-sched.c:444
 blk_mq_flush_plug_list+0x87a/0xd90 block/blk-mq.c:1733
 blk_flush_plug_list+0x349/0x520 block/blk-core.c:1768
 blk_finish_plug block/blk-core.c:1785 [inline]
 blk_finish_plug+0x58/0xa2 block/blk-core.c:1781
 read_pages+0x125/0x610 mm/readahead.c:142
 __do_page_cache_readahead+0x4e0/0x5d0 mm/readahead.c:212
 ra_submit mm/internal.h:62 [inline]
 ondemand_readahead+0x55c/0xd30 mm/readahead.c:492
 page_cache_sync_readahead mm/readahead.c:527 [inline]
 page_cache_sync_readahead+0x27c/0x510 mm/readahead.c:509
 generic_file_buffered_read mm/filemap.c:2051 [inline]
 generic_file_read_iter+0x173a/0x2ac0 mm/filemap.c:2324
 call_read_iter include/linux/fs.h:1889 [inline]
 generic_file_splice_read+0x4af/0x800 fs/splice.c:307
 do_splice_to+0x127/0x180 fs/splice.c:877
 splice_direct_to_actor+0x2d2/0x970 fs/splice.c:954
 do_splice_direct+0x1da/0x2a0 fs/splice.c:1063
 do_sendfile+0x597/0xd00 fs/read_write.c:1464
 __do_sys_sendfile64 fs/read_write.c:1525 [inline]
 __se_sys_sendfile64 fs/read_write.c:1511 [inline]
 __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1511
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a759
Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fd7e7937c88 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 000000000071bf00 RCX: 000000000045a759
RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000009
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 000000007fffffa7 R11: 0000000000000246 R12: 00007fd7e79386d4
R13: 00000000004af63f R14: 00000000006f2d90 R15: 00000000ffffffff