======================================
| [ 476.736255][ C1] #0: ffffffff9ff42e30 (remove_cache_srcu){.+.+}-{0:0}, at: kasan_quarantine_reduce (./include/linux/srcu.h:164 ./include/linux/srcu.h:256 mm/kasan/quarantine.c:259) 
| [ 476.736686][ C1] #1: ffffc900001e0ae8 ((&n->timer)){+.-.}-{0:0}, at: call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
| [  476.737053][    C1]
| [  476.737053][    C1] stack backtrace:
[  476.737362][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  476.737365][    C1] Call Trace:
[  476.737367][    C1]  <IRQ>
[ 476.737370][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 476.737379][ C1] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 476.737390][ C1] icmp6_send (./include/net/net_namespace.h:404 ./include/linux/netdevice.h:2669 net/ipv6/icmp.c:476) 
[ 476.737398][ C1] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 476.737404][ C1] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 476.737410][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3862) 
[ 476.737421][ C1] ? __pfx_icmp6_send (net/ipv6/icmp.c:452) 
[ 476.737430][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3862) 
[ 476.737434][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) 
[ 476.737437][ C1] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 476.737447][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 476.737453][ C1] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 476.737459][ C1] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 476.737462][ C1] ? neigh_invalidate (net/core/neighbour.c:1008) 
[ 476.737468][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 476.737471][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:469 kernel/locking/lockdep.c:5853) 
[ 476.737482][ C1] ip6_link_failure (./include/linux/skbuff.h:1152 net/ipv6/route.c:2801) 
[ 476.737491][ C1] ndisc_error_report (./include/net/dst.h:429 net/ipv6/ndisc.c:731) 
[ 476.737498][ C1] neigh_invalidate (net/core/neighbour.c:1008) 
[ 476.737507][ C1] neigh_timer_handler (net/core/neighbour.c:1109 (discriminator 2)) 
[ 476.737517][ C1] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 476.737522][ C1] call_timer_fn (kernel/time/timer.c:1789) 
[ 476.737526][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 476.737529][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 476.737533][ C1] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 476.737536][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) 
[ 476.737543][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 476.737554][ C1] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 476.737558][ C1] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 476.737568][ C1] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 476.737570][ C1] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 476.737578][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 476.737584][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 476.737588][ C1] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 476.737591][ C1] ? timer_expire_remote (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2177) 
[ 476.737601][ C1] timer_expire_remote (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2177) 
[ 476.737605][ C1] tmigr_handle_remote_cpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:147 kernel/time/timer_migration.c:961) 
[ 476.737612][ C1] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:905) 
[ 476.737615][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 476.737620][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) 
[ 476.737622][ C1] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 476.737629][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 476.737640][ C1] tmigr_handle_remote_up (kernel/time/timer_migration.c:1038) 
[ 476.737645][ C1] ? __pfx_tmigr_handle_remote_up (kernel/time/timer_migration.c:1005) 
[ 476.737650][ C1] __walk_groups.isra.0 (kernel/time/timer_migration.c:533) 
[ 476.737660][ C1] tmigr_handle_remote (kernel/time/timer_migration.c:1096) 
[ 476.737664][ C1] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1059) 
[ 476.737669][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) 
[ 476.737676][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 476.737685][ C1] handle_softirqs (kernel/softirq.c:561) 
[ 476.737698][ C1] __irq_exit_rcu (kernel/softirq.c:596 kernel/softirq.c:435 kernel/softirq.c:662) 
[ 476.737701][ C1] irq_exit_rcu (kernel/softirq.c:680) 
[ 476.737704][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[  476.737710][    C1]  </IRQ>
[  476.737711][    C1]  <TASK>
[ 476.737713][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 476.737718][ C1] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 476.737724][ C1] Code: 10 e8 81 74 88 fd 48 89 ef e8 c9 e4 88 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 75 7d 30 61 <74> 0e 5b 5d c3 cc cc cc cc e8 8f 03 ae fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	81 74 88 fd 48 89 ef 	xorl   $0xe8ef8948,-0x3(%rax,%rcx,4)
   9:	e8 
   a:	c9                   	leave
   b:	e4 88                	in     $0x88,%al
   d:	fd                   	std
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d 75 7d 30 61 	decl   %gs:0x61307d75(%rip)        # 0x61307d9f
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 8f 03 ae fd       	call   0xfffffffffdae03c7
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 8f 03 ae fd       	call   0xfffffffffdae039d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[  476.737727][    C1] RSP: 0018:ffffc90001b77608 EFLAGS: 00000246
[  476.737730][    C1] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff43c64c3
[  476.737732][    C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9ed34761
[  476.737734][    C1] RBP: ffff888001040e00 R08: 0000000000000001 R09: fffffbfff43c43e5
[  476.737735][    C1] R10: ffffffffa1e21f2f R11: ffff88800a96c5c0 R12: ffff88800a11b380
[  476.737737][    C1] R13: 0000000000000000 R14: ffffc90001b77658 R15: ffff88800b909464
[ 476.737748][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 476.737756][ C1] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 476.737766][ C1] kasan_quarantine_reduce (./include/linux/srcu.h:357 mm/kasan/quarantine.c:287) 
[ 476.737772][ C1] __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 476.737780][ C1] kmem_cache_alloc_node_noprof (mm/slub.c:4116 mm/slub.c:4164 mm/slub.c:4216) 
[ 476.737793][ C1] __alloc_skb (net/core/skbuff.c:668) 
[ 476.737801][ C1] ? __pfx___alloc_skb (net/core/skbuff.c:651) 
[ 476.737804][ C1] ? ipv6_dev_get_saddr (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/ipv6/addrconf.c:1900) 
[ 476.737809][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 476.737829][ C1] alloc_skb_with_frags (./include/linux/skbuff.h:1331 net/core/skbuff.c:6612) 
[ 476.737837][ C1] ? ipv6_dev_get_saddr (net/ipv6/addrconf.c:1809) 
[ 476.737845][ C1] sock_alloc_send_pskb (net/core/sock.c:2899) 
[ 476.737850][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3862) 
[ 476.737864][ C1] ? __pfx_sock_alloc_send_pskb (net/core/sock.c:2870) 
[ 476.737874][ C1] ? __pfx_xfrm_lookup_with_ifid (net/xfrm/xfrm_policy.c:3174) 
[ 476.737883][ C1] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 476.737890][ C1] rawv6_send_hdrinc (./include/net/sock.h:1804 net/ipv6/raw.c:614) 
[ 476.737903][ C1] ? __pfx_rawv6_send_hdrinc (net/ipv6/raw.c:596) 
[ 476.737909][ C1] ? ip6_dst_hoplimit.part.0.isra.0 (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/ipv6/output_core.c:117) 
[ 476.737921][ C1] rawv6_sendmsg (net/ipv6/raw.c:915) 
[ 476.737930][ C1] ? trace_raw_output_lock (./include/trace/events/lock.h:50 (discriminator 2)) 
[ 476.737938][ C1] ? __pfx_rawv6_sendmsg (net/ipv6/raw.c:741) 
[ 476.737944][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 476.737955][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3862) 
[ 476.737963][ C1] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 476.737969][ C1] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 476.737972][ C1] ? __might_fault (mm/memory.c:6840 mm/memory.c:6833) 
[ 476.737987][ C1] ? __might_fault (mm/memory.c:6840 mm/memory.c:6833) 
[ 476.737992][ C1] ? __might_fault (mm/memory.c:6840 mm/memory.c:6833) 
[ 476.738002][ C1] ? __sys_sendto (net/socket.c:713 net/socket.c:728 net/socket.c:2182) 
[ 476.738008][ C1] __sys_sendto (net/socket.c:713 net/socket.c:728 net/socket.c:2182) 
[ 476.738013][ C1] ? __pfx___sys_sendto (net/socket.c:2149) 
[ 476.738016][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 476.738019][ C1] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 476.738032][ C1] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 476.738045][ C1] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 476.738061][ C1] __x64_sys_sendto (net/socket.c:2185) 
[ 476.738065][ C1] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 476.738070][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 476.738079][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  476.738082][    C1] RIP: 0033:0x7f1880e0da4a
[ 476.738088][ C1] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
All code
========
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb b8                	jmp    0xffffffffffffffc5
   d:	0f 1f 00             	nopl   (%rax)
  10:	f3 0f 1e fa          	endbr64
  14:	41 89 ca             	mov    %ecx,%r10d
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 15                	jne    0x38
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 7e                	ja     0xb0
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	41 54                	push   %r12
  3a:	48 83 ec 30          	sub    $0x30,%rsp
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 7e                	ja     0x86
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	41 54                	push   %r12
  10:	48 83 ec 30          	sub    $0x30,%rsp
  14:	44                   	rex.R
  15:	89                   	.byte 0x89
[  476.738090][    C1] RSP: 002b:00007ffc368fa658 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[  476.738093][    C1] RAX: ffffffffffffffda RBX: 0000000002d899d0 RCX: 00007f1880e0da4a
[  476.738095][    C1] RDX: 0000000000000070 RSI: 0000000002d89c70 RDI: 0000000000000005
[  476.738096][    C1] RBP: 0000000002d899d0 R08: 00007ffc368fa660 R09: 000000000000001c
[  476.738098][    C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000070


Finger prints:
lockdep_rcu_suspicious:icmp6_send:ip6_link_failure:ndisc_error_report:neigh_invalidate