======================================
| [  101.632977][  T669] ==================================================================
| [ 101.633342][ T669] BUG: KASAN: slab-use-after-free in neigh_flush_dev.isra.0 (./include/linux/list.h:990 ./include/linux/rculist.h:516 net/core/neighbour.c:385) 
| [  101.633649][  T669] Write of size 8 at addr ffff8880076ac018 by task ip/669
| [  101.633900][  T669]
[  101.634319][  T669] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  101.634794][  T669] Call Trace:
[  101.634962][  T669]  <TASK>
[ 101.635070][ T669] dump_stack_lvl (lib/dump_stack.c:123) 
[ 101.635281][ T669] print_address_description.constprop.0 (mm/kasan/report.c:378) 
[ 101.635543][ T669] ? neigh_flush_dev.isra.0 (./include/linux/list.h:990 ./include/linux/rculist.h:516 net/core/neighbour.c:385) 
[ 101.635750][ T669] print_report (mm/kasan/report.c:489) 
[ 101.635998][ T669] ? kasan_addr_to_slab (./include/linux/mm.h:1282 mm/kasan/../slab.h:206 mm/kasan/common.c:38) 
[ 101.636222][ T669] kasan_report (mm/kasan/report.c:603) 
[ 101.636392][ T669] ? neigh_flush_dev.isra.0 (./include/linux/list.h:990 ./include/linux/rculist.h:516 net/core/neighbour.c:385) 
[ 101.636624][ T669] neigh_flush_dev.isra.0 (./include/linux/list.h:990 ./include/linux/rculist.h:516 net/core/neighbour.c:385) 
[ 101.636836][ T669] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 101.637060][ T669] __neigh_ifdown.isra.0 (net/core/neighbour.c:826 net/core/neighbour.c:426) 
[ 101.637278][ T669] ? __fib6_clean_all (net/ipv6/ip6_fib.c:2274) 
[ 101.637501][ T669] ? __pfx_fib6_ifdown (net/ipv6/route.c:4853) 
[ 101.637766][ T669] neigh_ifdown (net/core/neighbour.c:445) 
[ 101.637957][ T669] rt6_disable_ip (net/ipv6/route.c:4912) 
[ 101.638177][ T669] ? __pfx_rt6_disable_ip (net/ipv6/route.c:4912) 
[ 101.638394][ T669] ? 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:228) 
[ 101.638611][ T669] addrconf_ifdown.isra.0 (./include/net/addrconf.h:330 net/ipv6/addrconf.c:3860) 
[ 101.638824][ T669] ? __try_to_del_timer_sync (kernel/time/timer.c:1499) 
[ 101.639036][ T669] ? __pfx_addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3845) 
[ 101.639355][ T669] addrconf_notify (net/ipv6/addrconf.c:3815) 
[ 101.639584][ T669] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) 
[ 101.639800][ T669] dev_close_many (net/core/dev.c:1590) 
[ 101.640017][ T669] ? __pfx_dev_close_many (net/core/dev.c:1577) 
[ 101.640241][ T669] ? __debug_check_no_obj_freed (lib/debugobjects.c:1000) 
[ 101.640504][ T669] unregister_netdevice_many_notify (net/core/dev.c:11503) 
[ 101.640791][ T669] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 101.640966][ T669] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 101.641189][ T669] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11470) 
[ 101.641470][ T669] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 101.641753][ T669] ? kfree (mm/slub.c:4579 mm/slub.c:4727) 
[ 101.641912][ T669] ? vlan_vid_del (net/8021q/vlan_core.c:368 net/8021q/vlan_core.c:387) 
[ 101.642137][ T669] ? vlan_vid_del (net/8021q/vlan_core.c:368 net/8021q/vlan_core.c:387) 
[ 101.642350][ T669] rtnl_dellink (net/core/rtnetlink.c:3329 net/core/rtnetlink.c:3379) 
[ 101.642566][ T669] ? 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:228) 
[ 101.642775][ T669] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3335) 
[ 101.643020][ T669] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 101.643271][ T669] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 101.643498][ T669] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 101.643737][ T669] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 101.643954][ T669] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6719) 
[ 101.644189][ T669] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 101.644415][ T669] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 101.644637][ T669] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 101.644857][ T669] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 101.645081][ T669] rtnetlink_rcv_msg (net/core/rtnetlink.c:6721) 
[ 101.645294][ T669] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) 
[ 101.645507][ T669] ? 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:228) 
[ 101.645724][ T669] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 101.645884][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 101.646098][ T669] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 101.646310][ T669] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) 
[ 101.646519][ T669] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 101.646738][ T669] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 101.646945][ T669] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 101.647156][ T669] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 101.647373][ T669] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 101.647584][ T669] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 101.647798][ T669] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 101.648014][ T669] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 101.648222][ T669] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693) 
[ 101.648433][ T669] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) 
[ 101.648646][ T669] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) 
[ 101.648858][ T669] ? __pfx_____sys_sendmsg (net/socket.c:2553) 
[ 101.649073][ T669] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) 
[ 101.649353][ T669] ___sys_sendmsg (net/socket.c:2663) 
[ 101.649564][ T669] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 101.649781][ T669] ? __pfx____sys_sendmsg (net/socket.c:2650) 
[ 101.649994][ T669] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 101.650207][ T669] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) 
[ 101.650467][ T669] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 101.650673][ T669] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 101.650887][ T669] ? __kasan_record_aux_stack (mm/kasan/generic.c:541) 
[ 101.651115][ T669] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:123 kernel/rcu/tree.c:3087) 
[ 101.651361][ T669] ? __x64_sys_close (fs/open.c:1568 fs/open.c:1550 fs/open.c:1550) 
[ 101.651582][ T669] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 101.651791][ T669] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 101.652040][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 101.652243][ T669] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 101.652458][ T669] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 101.652675][ T669] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[ 101.652834][ T669] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) 
[ 101.653037][ T669] ? __pfx___sys_sendmsg (net/socket.c:2678) 
[ 101.653236][ T669] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2053 arch/x86/mm/physaddr.c:65) 
[ 101.653449][ T669] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 101.653663][ T669] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  101.653926][  T669] RIP: 0033:0x7fd352fee7b7
[ 101.654151][ T669] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0a 00                	or     (%rax),%al
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[  101.654927][  T669] RSP: 002b:00007ffce5a06f88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  101.655251][  T669] RAX: ffffffffffffffda RBX: 00007ffce5a076b0 RCX: 00007fd352fee7b7
[  101.655569][  T669] RDX: 0000000000000000 RSI: 00007ffce5a06ff0 RDI: 0000000000000005
[  101.655915][  T669] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[  101.656258][  T669] R10: 00007fd352eacef8 R11: 0000000000000246 R12: 0000000000000002
[  101.656582][  T669] R13: 0000000067169c08 R14: 0000000000496600 R15: 0000000000000000
| [  101.679660][  T669] Disabling lock debugging due to kernel taint
| [  101.680038][  T669] Oops: general protection fault, probably for non-canonical address 0xe0393c5620000053: 0000 [#1] PREEMPT SMP KASAN NOPTI
| [  101.680680][  T669] KASAN: maybe wild-memory-access in range [0x01ca02b100000298-0x01ca02b10000029f]
| [  101.681510][  T669] Tainted: [B]=BAD_PAGE
[  101.681657][  T669] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 101.682223][ T669] RIP: 0010:neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) 
[ 101.682485][ T669] Code: 0f 85 ef 04 00 00 49 8d 7f 08 49 8b 1f 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 cc 04 00 00 49 8b 6f 08 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 19 05 00 00 48 89 5d 00 48 85 db 74 1a 48 8d
All code
========
   0:	0f 85 ef 04 00 00    	jne    0x4f5
   6:	49 8d 7f 08          	lea    0x8(%r15),%rdi
   a:	49 8b 1f             	mov    (%r15),%rbx
   d:	48 89 f8             	mov    %rdi,%rax
  10:	48 c1 e8 03          	shr    $0x3,%rax
  14:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  19:	0f 85 cc 04 00 00    	jne    0x4eb
  1f:	49 8b 6f 08          	mov    0x8(%r15),%rbp
  23:	48 89 e8             	mov    %rbp,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
  2a:*	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)		<-- trapping instruction
  2f:	0f 85 19 05 00 00    	jne    0x54e
  35:	48 89 5d 00          	mov    %rbx,0x0(%rbp)
  39:	48 85 db             	test   %rbx,%rbx
  3c:	74 1a                	je     0x58
  3e:	48                   	rex.W
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
   5:	0f 85 19 05 00 00    	jne    0x524
   b:	48 89 5d 00          	mov    %rbx,0x0(%rbp)
   f:	48 85 db             	test   %rbx,%rbx
  12:	74 1a                	je     0x2e
  14:	48                   	rex.W
  15:	8d                   	.byte 0x8d
[  101.683312][  T669] RSP: 0018:ffffc900010aed70 EFLAGS: 00010207
[  101.683559][  T669] RAX: 0039405620000053 RBX: ffff888005ff7c40 RCX: ffffffffa42796f0
[  101.683860][  T669] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880076ac008
[  101.684285][  T669] RBP: 01ca02b10000029d R08: 0000000000000000 R09: 0000000000000000
[  101.684609][  T669] R10: ffffffffa6771f0f R11: ffffc900010ae981 R12: ffff8880076ac13c
[  101.684902][  T669] R13: dffffc0000000000 R14: ffff888005c89000 R15: ffff8880076ac000
[  101.685339][  T669] FS:  00007fd352de2800(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  101.685711][  T669] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  101.685992][  T669] CR2: 00000000004e28e0 CR3: 0000000008ba0002 CR4: 0000000000772ef0
[  101.686415][  T669] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  101.686705][  T669] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  101.686994][  T669] PKRU: 55555554
[  101.687387][  T669] Call Trace:
[  101.687540][  T669]  <TASK>
[ 101.687644][ T669] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) 
[ 101.687800][ T669] ? exc_general_protection (arch/x86/kernel/traps.c:751 arch/x86/kernel/traps.c:693) 
[ 101.687993][ T669] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:617) 
[ 101.688312][ T669] ? neigh_flush_dev.isra.0 (./include/linux/list.h:986 ./include/linux/rculist.h:516 net/core/neighbour.c:384) 
[ 101.688516][ T669] ? neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) 
[ 101.688721][ T669] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 101.688927][ T669] __neigh_ifdown.isra.0 (net/core/neighbour.c:826 net/core/neighbour.c:426) 
[ 101.689282][ T669] ? __fib6_clean_all (net/ipv6/ip6_fib.c:2274) 
[ 101.689496][ T669] ? __pfx_fib6_ifdown (net/ipv6/route.c:4853) 
[ 101.689701][ T669] neigh_ifdown (net/core/neighbour.c:445) 
[ 101.689861][ T669] rt6_disable_ip (net/ipv6/route.c:4912) 
[ 101.690065][ T669] ? __pfx_rt6_disable_ip (net/ipv6/route.c:4912) 
[ 101.690402][ T669] ? 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:228) 
[ 101.690615][ T669] addrconf_ifdown.isra.0 (./include/net/addrconf.h:330 net/ipv6/addrconf.c:3860) 
[ 101.690821][ T669] ? __try_to_del_timer_sync (kernel/time/timer.c:1499) 
[ 101.691031][ T669] ? __pfx_addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3845) 
[ 101.691425][ T669] addrconf_notify (net/ipv6/addrconf.c:3815) 
[ 101.691636][ T669] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) 
[ 101.691849][ T669] dev_close_many (net/core/dev.c:1590) 
[ 101.692054][ T669] ? __pfx_dev_close_many (net/core/dev.c:1577) 
[ 101.692393][ T669] ? __debug_check_no_obj_freed (lib/debugobjects.c:1000) 
[ 101.692648][ T669] unregister_netdevice_many_notify (net/core/dev.c:11503) 
[ 101.692906][ T669] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 101.693066][ T669] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 101.693408][ T669] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11470) 
[ 101.693656][ T669] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 101.693906][ T669] ? kfree (mm/slub.c:4579 mm/slub.c:4727) 
[ 101.694062][ T669] ? vlan_vid_del (net/8021q/vlan_core.c:368 net/8021q/vlan_core.c:387) 
[ 101.694397][ T669] ? vlan_vid_del (net/8021q/vlan_core.c:368 net/8021q/vlan_core.c:387) 
[ 101.694609][ T669] rtnl_dellink (net/core/rtnetlink.c:3329 net/core/rtnetlink.c:3379) 
[ 101.694811][ T669] ? 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:228) 
[ 101.695023][ T669] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3335) 
[ 101.695361][ T669] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 101.695588][ T669] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 101.695789][ T669] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 101.695993][ T669] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 101.696200][ T669] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6719) 
[ 101.696540][ T669] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 101.696741][ T669] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 101.696950][ T669] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 101.697152][ T669] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 101.697484][ T669] rtnetlink_rcv_msg (net/core/rtnetlink.c:6721) 
[ 101.697685][ T669] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) 
[ 101.697875][ T669] ? 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:228) 
[ 101.698065][ T669] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 101.698331][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 101.698525][ T669] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 101.698713][ T669] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) 
[ 101.698908][ T669] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 101.699103][ T669] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 101.699441][ T669] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 101.699637][ T669] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 101.699834][ T669] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 101.700028][ T669] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 101.700353][ T669] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 101.700552][ T669] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 101.700742][ T669] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693) 
[ 101.700937][ T669] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) 
[ 101.701258][ T669] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) 
[ 101.701455][ T669] ? __pfx_____sys_sendmsg (net/socket.c:2553) 
[ 101.701650][ T669] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) 
[ 101.701920][ T669] ___sys_sendmsg (net/socket.c:2663) 
[ 101.702246][ T669] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 101.702480][ T669] ? __pfx____sys_sendmsg (net/socket.c:2650) 
[ 101.702685][ T669] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 101.702922][ T669] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) 
[ 101.703428][ T669] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 101.703621][ T669] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 101.703832][ T669] ? __kasan_record_aux_stack (mm/kasan/generic.c:541) 
[ 101.704046][ T669] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:123 kernel/rcu/tree.c:3087) 
[ 101.704401][ T669] ? __x64_sys_close (fs/open.c:1568 fs/open.c:1550 fs/open.c:1550) 
[ 101.704598][ T669] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 101.704794][ T669] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 101.705034][ T669] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 101.705354][ T669] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 101.705547][ T669] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 101.705741][ T669] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[ 101.705910][ T669] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) 
[ 101.706112][ T669] ? __pfx___sys_sendmsg (net/socket.c:2678) 
[ 101.706430][ T669] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2053 arch/x86/mm/physaddr.c:65) 
[ 101.706654][ T669] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 101.706858][ T669] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  101.707115][  T669] RIP: 0033:0x7fd352fee7b7
[ 101.707488][ T669] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0a 00                	or     (%rax),%al
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[  101.708361][  T669] RSP: 002b:00007ffce5a06f88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  101.708680][  T669] RAX: ffffffffffffffda RBX: 00007ffce5a076b0 RCX: 00007fd352fee7b7
[  101.708982][  T669] RDX: 0000000000000000 RSI: 00007ffce5a06ff0 RDI: 0000000000000005
[  101.709455][  T669] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[  101.709758][  T669] R10: 00007fd352eacef8 R11: 0000000000000246 R12: 0000000000000002


Finger prints:
neigh_ifdown:rt6_disable_ip:addrconf_notify:notifier_call_chain:dev_close_many
print_report:kasan_report:neigh_ifdown:rt6_disable_ip:addrconf_notify