======================================
| [   82.409599][  T666] 1 lock held by ip/666:
| [ 82.409743][ T666] #0: ffff888004fc4a30 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [   82.410121][  T666]
| [   82.410121][  T666] stack backtrace:
[   82.410367][  T666] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.410369][  T666] Call Trace:
[   82.410371][  T666]  <TASK>
[ 82.410373][ T666] dump_stack_lvl (lib/dump_stack.c:123) 
[ 82.410381][ T666] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 82.410391][ T666] nexthop_for_each_fib6_nh (net/ipv4/nexthop.c:1511 (discriminator 11)) 
[ 82.410396][ T666] ? __pfx_rt6_nh_flush_exceptions (net/ipv6/route.c:1778) 
[ 82.410400][ T666] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 82.410408][ T666] fib6_purge_rt (net/ipv6/ip6_fib.c:1023 net/ipv6/ip6_fib.c:1049) 
[ 82.410416][ T666] ? fib6_repair_tree.part.0 (net/ipv6/ip6_fib.c:204 net/ipv6/ip6_fib.c:1935) 
[ 82.410420][ T666] ? __pfx_fib6_purge_rt (net/ipv6/ip6_fib.c:1044) 
[ 82.410433][ T666] fib6_del_route (net/ipv6/ip6_fib.c:2026) 
[ 82.410447][ T666] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 82.410452][ T666] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 82.410458][ T666] ? 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) 
[ 82.410468][ T666] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 82.410476][ T666] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 82.410481][ T666] ip6_route_del (net/ipv6/route.c:4115) 
[ 82.410488][ T666] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 82.410492][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.410506][ T666] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 82.410511][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.410536][ T666] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 82.410543][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.410547][ T666] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 82.410553][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.410557][ T666] ? 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) 
[ 82.410560][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.410570][ T666] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 82.410577][ T666] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 82.410582][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.410589][ T666] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 82.410609][ T666] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 82.410614][ T666] ? 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) 
[ 82.410621][ T666] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 82.410629][ T666] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 82.410633][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.410643][ T666] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 82.410652][ T666] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 82.410667][ T666] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 82.410676][ T666] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 82.410679][ T666] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 82.410696][ T666] ___sys_sendmsg (net/socket.c:2622) 
[ 82.410699][ T666] ? 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) 
[ 82.410704][ T666] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 82.410713][ T666] ? usage_skip (kernel/locking/lockdep.c:2316) 
[ 82.410724][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.410729][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.410740][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.410746][ T666] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 82.410754][ T666] __sys_sendmsg (net/socket.c:2652) 
[ 82.410758][ T666] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 82.410770][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 82.410782][ T666] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 82.410788][ T666] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   82.410793][  T666] RIP: 0033:0x7f15118c99a7
[ 82.410797][ T666] 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)
[   82.410800][  T666] RSP: 002b:00007ffdb4e42078 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   82.410803][  T666] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f15118c99a7
[   82.410805][  T666] RDX: 0000000000000000 RSI: 00007ffdb4e420e0 RDI: 0000000000000005
[   82.410807][  T666] RBP: 00007ffdb4e45995 R08: 0000000000000010 R09: 0000000000000000
[   82.410808][  T666] R10: 00007f1511918ac0 R11: 0000000000000246 R12: 00007ffdb4e433f0
[   82.410810][  T666] R13: 0000000067dd32a0 R14: 0000000000498600 R15: 0000000000000001
| [   82.425602][  T666] 1 lock held by ip/666:
| [ 82.425747][ T666] #0: ffff888004fc4a30 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [   82.426093][  T666]
| [   82.426093][  T666] stack backtrace:
[   82.426347][  T666] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.426349][  T666] Call Trace:
[   82.426351][  T666]  <TASK>
[ 82.426353][ T666] dump_stack_lvl (lib/dump_stack.c:123) 
[ 82.426359][ T666] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 82.426368][ T666] nexthop_for_each_fib6_nh (net/ipv4/nexthop.c:1515 (discriminator 11)) 
[ 82.426372][ T666] ? __pfx_rt6_nh_flush_exceptions (net/ipv6/route.c:1778) 
[ 82.426376][ T666] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 82.426384][ T666] fib6_purge_rt (net/ipv6/ip6_fib.c:1023 net/ipv6/ip6_fib.c:1049) 
[ 82.426392][ T666] ? fib6_repair_tree.part.0 (net/ipv6/ip6_fib.c:204 net/ipv6/ip6_fib.c:1935) 
[ 82.426396][ T666] ? __pfx_fib6_purge_rt (net/ipv6/ip6_fib.c:1044) 
[ 82.426409][ T666] fib6_del_route (net/ipv6/ip6_fib.c:2026) 
[ 82.426423][ T666] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 82.426429][ T666] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 82.426434][ T666] ? 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) 
[ 82.426444][ T666] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 82.426452][ T666] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 82.426457][ T666] ip6_route_del (net/ipv6/route.c:4115) 
[ 82.426464][ T666] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 82.426468][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.426482][ T666] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 82.426487][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.426512][ T666] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 82.426519][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.426522][ T666] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 82.426529][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.426532][ T666] ? 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) 
[ 82.426535][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.426544][ T666] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 82.426552][ T666] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 82.426556][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.426563][ T666] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 82.426583][ T666] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 82.426588][ T666] ? 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) 
[ 82.426595][ T666] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 82.426603][ T666] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 82.426607][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.426617][ T666] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 82.426625][ T666] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 82.426641][ T666] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 82.426649][ T666] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 82.426653][ T666] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 82.426670][ T666] ___sys_sendmsg (net/socket.c:2622) 
[ 82.426672][ T666] ? 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) 
[ 82.426678][ T666] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 82.426687][ T666] ? usage_skip (kernel/locking/lockdep.c:2316) 
[ 82.426698][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.426703][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.426713][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.426719][ T666] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 82.426727][ T666] __sys_sendmsg (net/socket.c:2652) 
[ 82.426731][ T666] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 82.426744][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 82.426755][ T666] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 82.426761][ T666] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   82.426765][  T666] RIP: 0033:0x7f15118c99a7
[ 82.426770][ T666] 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)
[   82.426772][  T666] RSP: 002b:00007ffdb4e42078 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   82.426776][  T666] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f15118c99a7
[   82.426778][  T666] RDX: 0000000000000000 RSI: 00007ffdb4e420e0 RDI: 0000000000000005
[   82.426779][  T666] RBP: 00007ffdb4e45995 R08: 0000000000000010 R09: 0000000000000000
[   82.426781][  T666] R10: 00007f1511918ac0 R11: 0000000000000246 R12: 00007ffdb4e433f0
[   82.426782][  T666] R13: 0000000067dd32a0 R14: 0000000000498600 R15: 0000000000000001
| [   82.442979][  T666] 1 lock held by ip/666:
| [ 82.443128][ T666] #0: ffff888004fc4a30 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [   82.443581][  T666]
| [   82.443581][  T666] stack backtrace:
[   82.443814][  T666] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.443816][  T666] Call Trace:
[   82.443818][  T666]  <TASK>
[ 82.443820][ T666] dump_stack_lvl (lib/dump_stack.c:123) 
[ 82.443827][ T666] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 82.443837][ T666] nexthop_is_blackhole (./include/net/nexthop.h:375 (discriminator 11)) 
[ 82.443841][ T666] rt6_fill_node.constprop.0 (net/ipv6/route.c:5924) 
[ 82.443846][ T666] ? __kmalloc_node_track_caller_noprof (mm/slub.c:4315) 
[ 82.443852][ T666] ? __create_object (mm/kmemleak.c:766) 
[ 82.443864][ T666] ? __pfx_rt6_fill_node.constprop.0 (net/ipv6/route.c:5778) 
[ 82.443868][ T666] ? __build_skb_around (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 net/core/skbuff.c:381 net/core/skbuff.c:439) 
[ 82.443874][ T666] ? __alloc_skb (net/core/skbuff.c:685) 
[ 82.443878][ T666] ? __pfx___alloc_skb (net/core/skbuff.c:642) 
[ 82.443882][ T666] ? rt6_nlmsg_size (net/ipv6/route.c:5746) 
[ 82.443886][ T666] ? __pfx_rt6_nlmsg_size (net/ipv6/route.c:5706) 
[ 82.443895][ T666] ? inet6_rt_notify (net/ipv6/route.c:6372) 
[ 82.443898][ T666] inet6_rt_notify (net/ipv6/route.c:6372) 
[ 82.443908][ T666] fib6_del_route (net/ipv6/ip6_fib.c:2034) 
[ 82.443923][ T666] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 82.443931][ T666] ? 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) 
[ 82.443941][ T666] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 82.443949][ T666] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 82.443954][ T666] ip6_route_del (net/ipv6/route.c:4115) 
[ 82.443961][ T666] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 82.443965][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.443980][ T666] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 82.443984][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.444010][ T666] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 82.444017][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.444021][ T666] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 82.444027][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.444031][ T666] ? 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) 
[ 82.444034][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.444043][ T666] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 82.444051][ T666] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 82.444056][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.444062][ T666] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 82.444083][ T666] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 82.444088][ T666] ? 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) 
[ 82.444095][ T666] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 82.444103][ T666] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 82.444107][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.444117][ T666] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 82.444125][ T666] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 82.444141][ T666] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 82.444148][ T666] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 82.444152][ T666] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 82.444169][ T666] ___sys_sendmsg (net/socket.c:2622) 
[ 82.444172][ T666] ? 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) 
[ 82.444177][ T666] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 82.444187][ T666] ? usage_skip (kernel/locking/lockdep.c:2316) 
[ 82.444199][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.444203][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.444214][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.444220][ T666] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 82.444228][ T666] __sys_sendmsg (net/socket.c:2652) 
[ 82.444232][ T666] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 82.444245][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 82.444256][ T666] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 82.444263][ T666] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   82.444267][  T666] RIP: 0033:0x7f15118c99a7
[ 82.444272][ T666] 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)
[   82.444274][  T666] RSP: 002b:00007ffdb4e42078 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   82.444277][  T666] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f15118c99a7
[   82.444279][  T666] RDX: 0000000000000000 RSI: 00007ffdb4e420e0 RDI: 0000000000000005
[   82.444281][  T666] RBP: 00007ffdb4e45995 R08: 0000000000000010 R09: 0000000000000000
[   82.444282][  T666] R10: 00007f1511918ac0 R11: 0000000000000246 R12: 00007ffdb4e433f0
[   82.444284][  T666] R13: 0000000067dd32a0 R14: 0000000000498600 R15: 0000000000000001
| [   82.463048][  T666] 1 lock held by ip/666:
| [ 82.463252][ T666] #0: ffff888004fc4a30 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [   82.463782][  T666]
| [   82.463782][  T666] stack backtrace:
[   82.464069][  T666] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.464071][  T666] Call Trace:
[   82.464072][  T666]  <TASK>
[ 82.464075][ T666] dump_stack_lvl (lib/dump_stack.c:123) 
[ 82.464081][ T666] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 82.464091][ T666] rt6_fill_node_nexthop (./include/net/nexthop.h:312 ./include/net/nexthop.h:307 net/ipv6/route.c:5752) 
[ 82.464098][ T666] rt6_fill_node.constprop.0 (net/ipv6/route.c:5927) 
[ 82.464102][ T666] ? __kmalloc_node_track_caller_noprof (mm/slub.c:4315) 
[ 82.464108][ T666] ? __create_object (mm/kmemleak.c:766) 
[ 82.464125][ T666] ? __pfx_rt6_fill_node.constprop.0 (net/ipv6/route.c:5778) 
[ 82.464132][ T666] ? __build_skb_around (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 net/core/skbuff.c:381 net/core/skbuff.c:439) 
[ 82.464141][ T666] ? __alloc_skb (net/core/skbuff.c:685) 
[ 82.464146][ T666] ? __pfx___alloc_skb (net/core/skbuff.c:642) 
[ 82.464149][ T666] ? rt6_nlmsg_size (net/ipv6/route.c:5746) 
[ 82.464153][ T666] ? __pfx_rt6_nlmsg_size (net/ipv6/route.c:5706) 
[ 82.464163][ T666] ? inet6_rt_notify (net/ipv6/route.c:6372) 
[ 82.464165][ T666] inet6_rt_notify (net/ipv6/route.c:6372) 
[ 82.464184][ T666] fib6_del_route (net/ipv6/ip6_fib.c:2034) 
[ 82.464202][ T666] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 82.464211][ T666] ? 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) 
[ 82.464220][ T666] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 82.464228][ T666] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 82.464234][ T666] ip6_route_del (net/ipv6/route.c:4115) 
[ 82.464241][ T666] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 82.464245][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.464266][ T666] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 82.464274][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.464301][ T666] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 82.464312][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.464318][ T666] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 82.464328][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.464331][ T666] ? 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) 
[ 82.464334][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.464345][ T666] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 82.464359][ T666] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 82.464365][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.464373][ T666] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 82.464393][ T666] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 82.464401][ T666] ? 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) 
[ 82.464414][ T666] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 82.464424][ T666] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 82.464429][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.464438][ T666] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 82.464447][ T666] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 82.464474][ T666] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 82.464482][ T666] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 82.464486][ T666] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 82.464503][ T666] ___sys_sendmsg (net/socket.c:2622) 
[ 82.464505][ T666] ? 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) 
[ 82.464511][ T666] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 82.464520][ T666] ? usage_skip (kernel/locking/lockdep.c:2316) 
[ 82.464531][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.464540][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.464558][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.464565][ T666] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 82.464573][ T666] __sys_sendmsg (net/socket.c:2652) 
[ 82.464577][ T666] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 82.464598][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 82.464613][ T666] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 82.464620][ T666] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   82.464624][  T666] RIP: 0033:0x7f15118c99a7
[ 82.464630][ T666] 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)
[   82.464634][  T666] RSP: 002b:00007ffdb4e42078 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   82.464638][  T666] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f15118c99a7
[   82.464642][  T666] RDX: 0000000000000000 RSI: 00007ffdb4e420e0 RDI: 0000000000000005
[   82.464644][  T666] RBP: 00007ffdb4e45995 R08: 0000000000000010 R09: 0000000000000000
[   82.464647][  T666] R10: 00007f1511918ac0 R11: 0000000000000246 R12: 00007ffdb4e433f0
[   82.464650][  T666] R13: 0000000067dd32a0 R14: 0000000000498600 R15: 0000000000000001
| [   82.485711][  T666] 1 lock held by ip/666:
| [ 82.485982][ T666] #0: ffff888004fc4a30 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [   82.486363][  T666]
| [   82.486363][  T666] stack backtrace:
[   82.486632][  T666] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.486635][  T666] Call Trace:
[   82.486637][  T666]  <TASK>
[ 82.486640][ T666] dump_stack_lvl (lib/dump_stack.c:123) 
[ 82.486648][ T666] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 82.486657][ T666] nexthop_mpath_fill_node.constprop.0 (./include/net/nexthop.h:351) 
[ 82.486662][ T666] ? nla_put (lib/nlattr.c:1100) 
[ 82.486671][ T666] rt6_fill_node_nexthop (net/ipv6/route.c:5759) 
[ 82.486681][ T666] rt6_fill_node.constprop.0 (net/ipv6/route.c:5927) 
[ 82.486688][ T666] ? __kmalloc_node_track_caller_noprof (mm/slub.c:4315) 
[ 82.486696][ T666] ? __create_object (mm/kmemleak.c:766) 
[ 82.486709][ T666] ? __pfx_rt6_fill_node.constprop.0 (net/ipv6/route.c:5778) 
[ 82.486713][ T666] ? __build_skb_around (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 net/core/skbuff.c:381 net/core/skbuff.c:439) 
[ 82.486719][ T666] ? __alloc_skb (net/core/skbuff.c:685) 
[ 82.486723][ T666] ? __pfx___alloc_skb (net/core/skbuff.c:642) 
[ 82.486727][ T666] ? rt6_nlmsg_size (net/ipv6/route.c:5746) 
[ 82.486731][ T666] ? __pfx_rt6_nlmsg_size (net/ipv6/route.c:5706) 
[ 82.486741][ T666] ? inet6_rt_notify (net/ipv6/route.c:6372) 
[ 82.486743][ T666] inet6_rt_notify (net/ipv6/route.c:6372) 
[ 82.486754][ T666] fib6_del_route (net/ipv6/ip6_fib.c:2034) 
[ 82.486768][ T666] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 82.486777][ T666] ? 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) 
[ 82.486787][ T666] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 82.486795][ T666] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 82.486800][ T666] ip6_route_del (net/ipv6/route.c:4115) 
[ 82.486807][ T666] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 82.486811][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.486831][ T666] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 82.486838][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.486870][ T666] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 82.486881][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.486887][ T666] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 82.486894][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.486897][ T666] ? 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) 
[ 82.486900][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.486910][ T666] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 82.486917][ T666] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 82.486922][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.486928][ T666] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 82.486948][ T666] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 82.486954][ T666] ? 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) 
[ 82.486965][ T666] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 82.486980][ T666] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 82.486985][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.486994][ T666] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 82.487003][ T666] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 82.487018][ T666] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 82.487027][ T666] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 82.487030][ T666] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 82.487052][ T666] ___sys_sendmsg (net/socket.c:2622) 
[ 82.487056][ T666] ? 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) 
[ 82.487066][ T666] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 82.487076][ T666] ? usage_skip (kernel/locking/lockdep.c:2316) 
[ 82.487087][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.487092][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.487109][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.487121][ T666] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 82.487129][ T666] __sys_sendmsg (net/socket.c:2652) 
[ 82.487133][ T666] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 82.487145][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 82.487157][ T666] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 82.487164][ T666] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   82.487169][  T666] RIP: 0033:0x7f15118c99a7
[ 82.487173][ T666] 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)
[   82.487176][  T666] RSP: 002b:00007ffdb4e42078 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   82.487179][  T666] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f15118c99a7
[   82.487182][  T666] RDX: 0000000000000000 RSI: 00007ffdb4e420e0 RDI: 0000000000000005
[   82.487183][  T666] RBP: 00007ffdb4e45995 R08: 0000000000000010 R09: 0000000000000000
[   82.487185][  T666] R10: 00007f1511918ac0 R11: 0000000000000246 R12: 00007ffdb4e433f0
[   82.487188][  T666] R13: 0000000067dd32a0 R14: 0000000000498600 R15: 0000000000000001
| [   82.505281][  T666] 1 lock held by ip/666:
| [ 82.505412][ T666] #0: ffff888004fc4a30 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [   82.505819][  T666]
| [   82.505819][  T666] stack backtrace:
[   82.506040][  T666] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   82.506042][  T666] Call Trace:
[   82.506044][  T666]  <TASK>
[ 82.506046][ T666] dump_stack_lvl (lib/dump_stack.c:123) 
[ 82.506053][ T666] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 82.506062][ T666] nexthop_mpath_fill_node.constprop.0 (./include/net/nexthop.h:356) 
[ 82.506072][ T666] rt6_fill_node_nexthop (net/ipv6/route.c:5759) 
[ 82.506079][ T666] rt6_fill_node.constprop.0 (net/ipv6/route.c:5927) 
[ 82.506083][ T666] ? __kmalloc_node_track_caller_noprof (mm/slub.c:4315) 
[ 82.506088][ T666] ? __create_object (mm/kmemleak.c:766) 
[ 82.506100][ T666] ? __pfx_rt6_fill_node.constprop.0 (net/ipv6/route.c:5778) 
[ 82.506104][ T666] ? __build_skb_around (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 net/core/skbuff.c:381 net/core/skbuff.c:439) 
[ 82.506110][ T666] ? __alloc_skb (net/core/skbuff.c:685) 
[ 82.506114][ T666] ? __pfx___alloc_skb (net/core/skbuff.c:642) 
[ 82.506118][ T666] ? rt6_nlmsg_size (net/ipv6/route.c:5746) 
[ 82.506122][ T666] ? __pfx_rt6_nlmsg_size (net/ipv6/route.c:5706) 
[ 82.506131][ T666] ? inet6_rt_notify (net/ipv6/route.c:6372) 
[ 82.506134][ T666] inet6_rt_notify (net/ipv6/route.c:6372) 
[ 82.506144][ T666] fib6_del_route (net/ipv6/ip6_fib.c:2034) 
[ 82.506159][ T666] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 82.506168][ T666] ? 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) 
[ 82.506177][ T666] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 82.506185][ T666] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 82.506192][ T666] ip6_route_del (net/ipv6/route.c:4115) 
[ 82.506199][ T666] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 82.506203][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.506217][ T666] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 82.506222][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.506247][ T666] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 82.506254][ T666] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 82.506257][ T666] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 82.506264][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.506267][ T666] ? 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) 
[ 82.506270][ T666] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 82.506280][ T666] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 82.506287][ T666] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 82.506292][ T666] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 82.506299][ T666] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 82.506319][ T666] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 82.506324][ T666] ? 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) 
[ 82.506331][ T666] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 82.506339][ T666] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 82.506344][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.506353][ T666] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 82.506362][ T666] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 82.506377][ T666] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 82.506385][ T666] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 82.506389][ T666] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 82.506406][ T666] ___sys_sendmsg (net/socket.c:2622) 
[ 82.506408][ T666] ? 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) 
[ 82.506414][ T666] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 82.506423][ T666] ? usage_skip (kernel/locking/lockdep.c:2316) 
[ 82.506434][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.506439][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1339) 
[ 82.506449][ T666] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 82.506455][ T666] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 82.506464][ T666] __sys_sendmsg (net/socket.c:2652) 
[ 82.506468][ T666] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 82.506480][ T666] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 82.506492][ T666] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 82.506498][ T666] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   82.506503][  T666] RIP: 0033:0x7f15118c99a7
[ 82.506509][ T666] 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)
[   82.506512][  T666] RSP: 002b:00007ffdb4e42078 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   82.506515][  T666] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f15118c99a7
[   82.506517][  T666] RDX: 0000000000000000 RSI: 00007ffdb4e420e0 RDI: 0000000000000005
[   82.506518][  T666] RBP: 00007ffdb4e45995 R08: 0000000000000010 R09: 0000000000000000
[   82.506520][  T666] R10: 00007f1511918ac0 R11: 0000000000000246 R12: 00007ffdb4e433f0


Finger prints:
lockdep_rcu_suspicious:nexthop_is_blackhole:inet6_rt_notify:fib6_del_route:fib6_del
lockdep_rcu_suspicious:nexthop_for_each_fib6_nh:fib6_purge_rt:fib6_del_route:fib6_del
lockdep_rcu_suspicious:rt6_fill_node_nexthop:inet6_rt_notify:fib6_del_route:fib6_del