======================================
| [  353.338620][ T1897] 1 lock held by ip/1897:
| [ 353.338769][ T1897] #0: ffff88800d790230 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [  353.339131][ T1897]
| [  353.339131][ T1897] stack backtrace:
[  353.339368][ T1897] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  353.339370][ T1897] Call Trace:
[  353.339372][ T1897]  <TASK>
[ 353.339374][ T1897] dump_stack_lvl (lib/dump_stack.c:123) 
[ 353.339382][ T1897] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 353.339392][ T1897] nexthop_for_each_fib6_nh (net/ipv4/nexthop.c:1511 (discriminator 11)) 
[ 353.339396][ T1897] ? __pfx_rt6_nh_flush_exceptions (net/ipv6/route.c:1778) 
[ 353.339401][ T1897] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 353.339409][ T1897] fib6_purge_rt (net/ipv6/ip6_fib.c:1023 net/ipv6/ip6_fib.c:1049) 
[ 353.339416][ T1897] ? fib6_repair_tree.part.0 (net/ipv6/ip6_fib.c:204 net/ipv6/ip6_fib.c:1935) 
[ 353.339421][ T1897] ? __pfx_fib6_purge_rt (net/ipv6/ip6_fib.c:1044) 
[ 353.339434][ T1897] fib6_del_route (net/ipv6/ip6_fib.c:2026) 
[ 353.339447][ T1897] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 353.339453][ T1897] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 353.339459][ T1897] ? 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) 
[ 353.339468][ T1897] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 353.339476][ T1897] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 353.339482][ T1897] ip6_route_del (net/ipv6/route.c:4115) 
[ 353.339489][ T1897] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 353.339493][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.339507][ T1897] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 353.339512][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.339537][ T1897] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 353.339544][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.339548][ T1897] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 353.339554][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.339557][ T1897] ? 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) 
[ 353.339561][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.339571][ T1897] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 353.339578][ T1897] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 353.339583][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.339589][ T1897] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 353.339609][ T1897] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 353.339614][ T1897] ? 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) 
[ 353.339621][ T1897] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 353.339629][ T1897] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 353.339633][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.339643][ T1897] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 353.339651][ T1897] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 353.339667][ T1897] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 353.339675][ T1897] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 353.339678][ T1897] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 353.339695][ T1897] ___sys_sendmsg (net/socket.c:2622) 
[ 353.339702][ T1897] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 353.339711][ T1897] ? ___sys_recvmsg (net/socket.c:2818) 
[ 353.339716][ T1897] ? __pfx____sys_recvmsg (net/socket.c:2818) 
[ 353.339724][ T1897] ? 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) 
[ 353.339729][ T1897] ? 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) 
[ 353.339739][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.339745][ T1897] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 353.339754][ T1897] __sys_sendmsg (net/socket.c:2652) 
[ 353.339757][ T1897] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 353.339770][ T1897] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 353.339782][ T1897] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 353.339789][ T1897] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  353.339794][ T1897] RIP: 0033:0x7f1ec56419a7
[ 353.339798][ T1897] 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)
[  353.339800][ T1897] RSP: 002b:00007ffd6e9c4cf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  353.339804][ T1897] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1ec56419a7
[  353.339806][ T1897] RDX: 0000000000000000 RSI: 00007ffd6e9c4d60 RDI: 0000000000000005
[  353.339807][ T1897] RBP: 00007ffd6e9c7288 R08: 00000000ffff7fff R09: 0000000000000000
[  353.339809][ T1897] R10: 00007f1ec54ff4a8 R11: 0000000000000246 R12: 00007ffd6e9c6070
[  353.339811][ T1897] R13: 0000000067dd58e4 R14: 0000000000498600 R15: 0000000000000001
| [  353.354084][ T1897] 1 lock held by ip/1897:
| [ 353.354221][ T1897] #0: ffff88800d790230 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [  353.354557][ T1897]
| [  353.354557][ T1897] stack backtrace:
[  353.354779][ T1897] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  353.354781][ T1897] Call Trace:
[  353.354783][ T1897]  <TASK>
[ 353.354785][ T1897] dump_stack_lvl (lib/dump_stack.c:123) 
[ 353.354792][ T1897] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 353.354802][ T1897] nexthop_for_each_fib6_nh (net/ipv4/nexthop.c:1515 (discriminator 11)) 
[ 353.354806][ T1897] ? __pfx_rt6_nh_flush_exceptions (net/ipv6/route.c:1778) 
[ 353.354811][ T1897] ? mark_held_locks (kernel/locking/lockdep.c:4323) 
[ 353.354819][ T1897] fib6_purge_rt (net/ipv6/ip6_fib.c:1023 net/ipv6/ip6_fib.c:1049) 
[ 353.354826][ T1897] ? fib6_repair_tree.part.0 (net/ipv6/ip6_fib.c:204 net/ipv6/ip6_fib.c:1935) 
[ 353.354831][ T1897] ? __pfx_fib6_purge_rt (net/ipv6/ip6_fib.c:1044) 
[ 353.354844][ T1897] fib6_del_route (net/ipv6/ip6_fib.c:2026) 
[ 353.354857][ T1897] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 353.354863][ T1897] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 353.354869][ T1897] ? 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) 
[ 353.354878][ T1897] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 353.354886][ T1897] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 353.354892][ T1897] ip6_route_del (net/ipv6/route.c:4115) 
[ 353.354899][ T1897] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 353.354903][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.354917][ T1897] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 353.354922][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.354947][ T1897] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 353.354954][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.354957][ T1897] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 353.354964][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.354967][ T1897] ? 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) 
[ 353.354970][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.354981][ T1897] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 353.354989][ T1897] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 353.354994][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.355000][ T1897] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 353.355020][ T1897] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 353.355025][ T1897] ? 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) 
[ 353.355032][ T1897] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 353.355040][ T1897] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 353.355045][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.355054][ T1897] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 353.355063][ T1897] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 353.355078][ T1897] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 353.355086][ T1897] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 353.355090][ T1897] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 353.355107][ T1897] ___sys_sendmsg (net/socket.c:2622) 
[ 353.355113][ T1897] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 353.355122][ T1897] ? ___sys_recvmsg (net/socket.c:2818) 
[ 353.355127][ T1897] ? __pfx____sys_recvmsg (net/socket.c:2818) 
[ 353.355135][ T1897] ? 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) 
[ 353.355140][ T1897] ? 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) 
[ 353.355150][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.355157][ T1897] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 353.355165][ T1897] __sys_sendmsg (net/socket.c:2652) 
[ 353.355169][ T1897] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 353.355181][ T1897] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 353.355193][ T1897] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 353.355200][ T1897] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  353.355204][ T1897] RIP: 0033:0x7f1ec56419a7
[ 353.355209][ T1897] 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)
[  353.355212][ T1897] RSP: 002b:00007ffd6e9c4cf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  353.355215][ T1897] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1ec56419a7
[  353.355217][ T1897] RDX: 0000000000000000 RSI: 00007ffd6e9c4d60 RDI: 0000000000000005
[  353.355219][ T1897] RBP: 00007ffd6e9c7288 R08: 00000000ffff7fff R09: 0000000000000000
[  353.355220][ T1897] R10: 00007f1ec54ff4a8 R11: 0000000000000246 R12: 00007ffd6e9c6070
[  353.355222][ T1897] R13: 0000000067dd58e4 R14: 0000000000498600 R15: 0000000000000001
| [  353.370468][ T1897] 1 lock held by ip/1897:
| [ 353.370690][ T1897] #0: ffff88800d790230 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [  353.371031][ T1897]
| [  353.371031][ T1897] stack backtrace:
[  353.371296][ T1897] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  353.371297][ T1897] Call Trace:
[  353.371299][ T1897]  <TASK>
[ 353.371302][ T1897] dump_stack_lvl (lib/dump_stack.c:123) 
[ 353.371308][ T1897] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 353.371319][ T1897] nexthop_is_blackhole (./include/net/nexthop.h:375 (discriminator 11)) 
[ 353.371324][ T1897] rt6_fill_node.constprop.0 (net/ipv6/route.c:5924) 
[ 353.371329][ T1897] ? __kmalloc_node_track_caller_noprof (mm/slub.c:4315) 
[ 353.371335][ T1897] ? __create_object (mm/kmemleak.c:766) 
[ 353.371347][ T1897] ? __pfx_rt6_fill_node.constprop.0 (net/ipv6/route.c:5778) 
[ 353.371351][ T1897] ? __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) 
[ 353.371358][ T1897] ? __alloc_skb (net/core/skbuff.c:685) 
[ 353.371362][ T1897] ? __pfx___alloc_skb (net/core/skbuff.c:642) 
[ 353.371366][ T1897] ? rt6_nlmsg_size (net/ipv6/route.c:5746) 
[ 353.371370][ T1897] ? __pfx_rt6_nlmsg_size (net/ipv6/route.c:5706) 
[ 353.371379][ T1897] ? inet6_rt_notify (net/ipv6/route.c:6372) 
[ 353.371382][ T1897] inet6_rt_notify (net/ipv6/route.c:6372) 
[ 353.371393][ T1897] fib6_del_route (net/ipv6/ip6_fib.c:2034) 
[ 353.371406][ T1897] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 353.371415][ T1897] ? 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) 
[ 353.371425][ T1897] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 353.371433][ T1897] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 353.371438][ T1897] ip6_route_del (net/ipv6/route.c:4115) 
[ 353.371445][ T1897] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 353.371449][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.371463][ T1897] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 353.371468][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.371493][ T1897] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 353.371500][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.371504][ T1897] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 353.371510][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.371514][ T1897] ? 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) 
[ 353.371517][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.371527][ T1897] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 353.371534][ T1897] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 353.371539][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.371545][ T1897] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 353.371565][ T1897] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 353.371570][ T1897] ? 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) 
[ 353.371577][ T1897] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 353.371585][ T1897] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 353.371590][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.371599][ T1897] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 353.371608][ T1897] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 353.371623][ T1897] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 353.371632][ T1897] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 353.371635][ T1897] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 353.371652][ T1897] ___sys_sendmsg (net/socket.c:2622) 
[ 353.371659][ T1897] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 353.371668][ T1897] ? ___sys_recvmsg (net/socket.c:2818) 
[ 353.371673][ T1897] ? __pfx____sys_recvmsg (net/socket.c:2818) 
[ 353.371681][ T1897] ? 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) 
[ 353.371686][ T1897] ? 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) 
[ 353.371696][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.371702][ T1897] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 353.371710][ T1897] __sys_sendmsg (net/socket.c:2652) 
[ 353.371714][ T1897] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 353.371727][ T1897] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 353.371739][ T1897] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 353.371749][ T1897] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  353.371754][ T1897] RIP: 0033:0x7f1ec56419a7
[ 353.371760][ T1897] 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)
[  353.371763][ T1897] RSP: 002b:00007ffd6e9c4cf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  353.371768][ T1897] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1ec56419a7
[  353.371770][ T1897] RDX: 0000000000000000 RSI: 00007ffd6e9c4d60 RDI: 0000000000000005
[  353.371773][ T1897] RBP: 00007ffd6e9c7288 R08: 00000000ffff7fff R09: 0000000000000000
[  353.371775][ T1897] R10: 00007f1ec54ff4a8 R11: 0000000000000246 R12: 00007ffd6e9c6070
[  353.371778][ T1897] R13: 0000000067dd58e4 R14: 0000000000498600 R15: 0000000000000001
| [  353.388262][ T1897] 1 lock held by ip/1897:
| [ 353.388395][ T1897] #0: ffff88800d790230 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [  353.388714][ T1897]
| [  353.388714][ T1897] stack backtrace:
[  353.389037][ T1897] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  353.389039][ T1897] Call Trace:
[  353.389040][ T1897]  <TASK>
[ 353.389043][ T1897] dump_stack_lvl (lib/dump_stack.c:123) 
[ 353.389050][ T1897] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 353.389060][ T1897] rt6_fill_node_nexthop (./include/net/nexthop.h:312 ./include/net/nexthop.h:307 net/ipv6/route.c:5752) 
[ 353.389067][ T1897] rt6_fill_node.constprop.0 (net/ipv6/route.c:5927) 
[ 353.389072][ T1897] ? __kmalloc_node_track_caller_noprof (mm/slub.c:4315) 
[ 353.389077][ T1897] ? __create_object (mm/kmemleak.c:766) 
[ 353.389089][ T1897] ? __pfx_rt6_fill_node.constprop.0 (net/ipv6/route.c:5778) 
[ 353.389094][ T1897] ? __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) 
[ 353.389100][ T1897] ? __alloc_skb (net/core/skbuff.c:685) 
[ 353.389104][ T1897] ? __pfx___alloc_skb (net/core/skbuff.c:642) 
[ 353.389108][ T1897] ? rt6_nlmsg_size (net/ipv6/route.c:5746) 
[ 353.389112][ T1897] ? __pfx_rt6_nlmsg_size (net/ipv6/route.c:5706) 
[ 353.389121][ T1897] ? inet6_rt_notify (net/ipv6/route.c:6372) 
[ 353.389124][ T1897] inet6_rt_notify (net/ipv6/route.c:6372) 
[ 353.389134][ T1897] fib6_del_route (net/ipv6/ip6_fib.c:2034) 
[ 353.389149][ T1897] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 353.389158][ T1897] ? 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) 
[ 353.389168][ T1897] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 353.389175][ T1897] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 353.389181][ T1897] ip6_route_del (net/ipv6/route.c:4115) 
[ 353.389188][ T1897] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 353.389192][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.389206][ T1897] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 353.389211][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.389236][ T1897] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 353.389243][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.389247][ T1897] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 353.389253][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.389256][ T1897] ? 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) 
[ 353.389260][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.389269][ T1897] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 353.389277][ T1897] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 353.389282][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.389288][ T1897] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 353.389308][ T1897] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 353.389313][ T1897] ? 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) 
[ 353.389320][ T1897] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 353.389328][ T1897] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 353.389333][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.389343][ T1897] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 353.389351][ T1897] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 353.389367][ T1897] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 353.389375][ T1897] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 353.389379][ T1897] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 353.389396][ T1897] ___sys_sendmsg (net/socket.c:2622) 
[ 353.389403][ T1897] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 353.389412][ T1897] ? ___sys_recvmsg (net/socket.c:2818) 
[ 353.389417][ T1897] ? __pfx____sys_recvmsg (net/socket.c:2818) 
[ 353.389425][ T1897] ? 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) 
[ 353.389430][ T1897] ? 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) 
[ 353.389440][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.389446][ T1897] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 353.389455][ T1897] __sys_sendmsg (net/socket.c:2652) 
[ 353.389459][ T1897] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 353.389471][ T1897] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 353.389483][ T1897] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 353.389489][ T1897] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  353.389493][ T1897] RIP: 0033:0x7f1ec56419a7
[ 353.389498][ T1897] 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)
[  353.389500][ T1897] RSP: 002b:00007ffd6e9c4cf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  353.389504][ T1897] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1ec56419a7
[  353.389506][ T1897] RDX: 0000000000000000 RSI: 00007ffd6e9c4d60 RDI: 0000000000000005
[  353.389507][ T1897] RBP: 00007ffd6e9c7288 R08: 00000000ffff7fff R09: 0000000000000000
[  353.389509][ T1897] R10: 00007f1ec54ff4a8 R11: 0000000000000246 R12: 00007ffd6e9c6070
[  353.389510][ T1897] R13: 0000000067dd58e4 R14: 0000000000498600 R15: 0000000000000001
| [  353.406718][ T1897] 1 lock held by ip/1897:
| [ 353.406869][ T1897] #0: ffff88800d790230 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [  353.407316][ T1897]
| [  353.407316][ T1897] stack backtrace:
[  353.407555][ T1897] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  353.407557][ T1897] Call Trace:
[  353.407559][ T1897]  <TASK>
[ 353.407561][ T1897] dump_stack_lvl (lib/dump_stack.c:123) 
[ 353.407569][ T1897] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 353.407579][ T1897] nexthop_mpath_fill_node.constprop.0 (./include/net/nexthop.h:351) 
[ 353.407584][ T1897] ? nla_put (lib/nlattr.c:1100) 
[ 353.407593][ T1897] rt6_fill_node_nexthop (net/ipv6/route.c:5759) 
[ 353.407600][ T1897] rt6_fill_node.constprop.0 (net/ipv6/route.c:5927) 
[ 353.407604][ T1897] ? __kmalloc_node_track_caller_noprof (mm/slub.c:4315) 
[ 353.407610][ T1897] ? __create_object (mm/kmemleak.c:766) 
[ 353.407622][ T1897] ? __pfx_rt6_fill_node.constprop.0 (net/ipv6/route.c:5778) 
[ 353.407626][ T1897] ? __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) 
[ 353.407633][ T1897] ? __alloc_skb (net/core/skbuff.c:685) 
[ 353.407637][ T1897] ? __pfx___alloc_skb (net/core/skbuff.c:642) 
[ 353.407641][ T1897] ? rt6_nlmsg_size (net/ipv6/route.c:5746) 
[ 353.407645][ T1897] ? __pfx_rt6_nlmsg_size (net/ipv6/route.c:5706) 
[ 353.407654][ T1897] ? inet6_rt_notify (net/ipv6/route.c:6372) 
[ 353.407657][ T1897] inet6_rt_notify (net/ipv6/route.c:6372) 
[ 353.407667][ T1897] fib6_del_route (net/ipv6/ip6_fib.c:2034) 
[ 353.407681][ T1897] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 353.407690][ T1897] ? 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) 
[ 353.407700][ T1897] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 353.407708][ T1897] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 353.407714][ T1897] ip6_route_del (net/ipv6/route.c:4115) 
[ 353.407721][ T1897] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 353.407725][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.407739][ T1897] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 353.407744][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.407769][ T1897] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 353.407776][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.407779][ T1897] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 353.407786][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.407789][ T1897] ? 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) 
[ 353.407793][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.407802][ T1897] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 353.407810][ T1897] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 353.407815][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.407821][ T1897] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 353.407841][ T1897] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 353.407846][ T1897] ? 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) 
[ 353.407853][ T1897] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 353.407861][ T1897] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 353.407866][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.407875][ T1897] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 353.407884][ T1897] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 353.407907][ T1897] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 353.407920][ T1897] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 353.407924][ T1897] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 353.407942][ T1897] ___sys_sendmsg (net/socket.c:2622) 
[ 353.407949][ T1897] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 353.407958][ T1897] ? ___sys_recvmsg (net/socket.c:2818) 
[ 353.407963][ T1897] ? __pfx____sys_recvmsg (net/socket.c:2818) 
[ 353.407971][ T1897] ? 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) 
[ 353.407978][ T1897] ? 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) 
[ 353.407988][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.407995][ T1897] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 353.408003][ T1897] __sys_sendmsg (net/socket.c:2652) 
[ 353.408007][ T1897] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 353.408020][ T1897] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 353.408032][ T1897] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 353.408039][ T1897] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  353.408044][ T1897] RIP: 0033:0x7f1ec56419a7
[ 353.408049][ T1897] 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)
[  353.408051][ T1897] RSP: 002b:00007ffd6e9c4cf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  353.408055][ T1897] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1ec56419a7
[  353.408057][ T1897] RDX: 0000000000000000 RSI: 00007ffd6e9c4d60 RDI: 0000000000000005
[  353.408059][ T1897] RBP: 00007ffd6e9c7288 R08: 00000000ffff7fff R09: 0000000000000000
[  353.408060][ T1897] R10: 00007f1ec54ff4a8 R11: 0000000000000246 R12: 00007ffd6e9c6070
[  353.408062][ T1897] R13: 0000000067dd58e4 R14: 0000000000498600 R15: 0000000000000001
| [  353.426708][ T1897] 1 lock held by ip/1897:
| [ 353.426853][ T1897] #0: ffff88800d790230 (&tb->tb6_lock){+...}-{3:3}, at: __ip6_del_rt (net/ipv6/route.c:3904) 
| [  353.427194][ T1897]
| [  353.427194][ T1897] stack backtrace:
[  353.427526][ T1897] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  353.427528][ T1897] Call Trace:
[  353.427530][ T1897]  <TASK>
[ 353.427532][ T1897] dump_stack_lvl (lib/dump_stack.c:123) 
[ 353.427539][ T1897] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 353.427549][ T1897] nexthop_mpath_fill_node.constprop.0 (./include/net/nexthop.h:356) 
[ 353.427559][ T1897] rt6_fill_node_nexthop (net/ipv6/route.c:5759) 
[ 353.427566][ T1897] rt6_fill_node.constprop.0 (net/ipv6/route.c:5927) 
[ 353.427571][ T1897] ? __kmalloc_node_track_caller_noprof (mm/slub.c:4315) 
[ 353.427576][ T1897] ? __create_object (mm/kmemleak.c:766) 
[ 353.427588][ T1897] ? __pfx_rt6_fill_node.constprop.0 (net/ipv6/route.c:5778) 
[ 353.427592][ T1897] ? __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) 
[ 353.427599][ T1897] ? __alloc_skb (net/core/skbuff.c:685) 
[ 353.427603][ T1897] ? __pfx___alloc_skb (net/core/skbuff.c:642) 
[ 353.427606][ T1897] ? rt6_nlmsg_size (net/ipv6/route.c:5746) 
[ 353.427611][ T1897] ? __pfx_rt6_nlmsg_size (net/ipv6/route.c:5706) 
[ 353.427620][ T1897] ? inet6_rt_notify (net/ipv6/route.c:6372) 
[ 353.427623][ T1897] inet6_rt_notify (net/ipv6/route.c:6372) 
[ 353.427633][ T1897] fib6_del_route (net/ipv6/ip6_fib.c:2034) 
[ 353.427648][ T1897] ? __pfx_fib6_del_route (net/ipv6/ip6_fib.c:1947) 
[ 353.427657][ T1897] ? 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) 
[ 353.427667][ T1897] fib6_del (net/ipv6/ip6_fib.c:2070) 
[ 353.427675][ T1897] __ip6_del_rt (./include/linux/spinlock.h:396 net/ipv6/route.c:3905) 
[ 353.427680][ T1897] ip6_route_del (net/ipv6/route.c:4115) 
[ 353.427687][ T1897] ? __pfx_ip6_route_del (net/ipv6/route.c:4059) 
[ 353.427691][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.427706][ T1897] inet6_rtm_delroute (net/ipv6/route.c:5663) 
[ 353.427710][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.427736][ T1897] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 353.427743][ T1897] ? __pfx_inet6_rtm_delroute (net/ipv6/route.c:5640) 
[ 353.427747][ T1897] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 353.427753][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.427757][ T1897] ? 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) 
[ 353.427760][ T1897] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 353.427769][ T1897] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 353.427777][ T1897] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 353.427782][ T1897] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 353.427788][ T1897] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 353.427808][ T1897] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 353.427813][ T1897] ? 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) 
[ 353.427820][ T1897] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 353.427828][ T1897] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 353.427833][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.427842][ T1897] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 353.427851][ T1897] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 353.427866][ T1897] ____sys_sendmsg (net/socket.c:712 net/socket.c:727 net/socket.c:2566) 
[ 353.427875][ T1897] ? __pfx_____sys_sendmsg (net/socket.c:2512) 
[ 353.427878][ T1897] ? __pfx_copy_msghdr_from_user (net/socket.c:2492) 
[ 353.427895][ T1897] ___sys_sendmsg (net/socket.c:2622) 
[ 353.427902][ T1897] ? __pfx____sys_sendmsg (net/socket.c:2609) 
[ 353.427911][ T1897] ? ___sys_recvmsg (net/socket.c:2818) 
[ 353.427917][ T1897] ? __pfx____sys_recvmsg (net/socket.c:2818) 
[ 353.427925][ T1897] ? 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) 
[ 353.427929][ T1897] ? 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) 
[ 353.427940][ T1897] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 353.427946][ T1897] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 353.427954][ T1897] __sys_sendmsg (net/socket.c:2652) 
[ 353.427958][ T1897] ? __pfx___sys_sendmsg (net/socket.c:2637) 
[ 353.427971][ T1897] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 353.427984][ T1897] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 353.427991][ T1897] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  353.427996][ T1897] RIP: 0033:0x7f1ec56419a7
[ 353.428001][ T1897] 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)
[  353.428003][ T1897] RSP: 002b:00007ffd6e9c4cf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  353.428007][ T1897] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1ec56419a7
[  353.428009][ T1897] RDX: 0000000000000000 RSI: 00007ffd6e9c4d60 RDI: 0000000000000005
[  353.428010][ T1897] RBP: 00007ffd6e9c7288 R08: 00000000ffff7fff R09: 0000000000000000
[  353.428012][ T1897] R10: 00007f1ec54ff4a8 R11: 0000000000000246 R12: 00007ffd6e9c6070


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