======================================
| [  776.082499] #PF: supervisor read access in kernel mode
| [  776.082537] #PF: error_code(0x0000) - not-present page
| [  776.082572] PGD b836067 P4D b836067 PUD b2f6067 PMD 0
| [  776.082614] Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
[  776.082712] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  776.082756] RIP: 0010:rtm_new_nexthop (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/linux/refcount.h:136 ./include/linux/refcount.h:142 ./include/linux/refcount.h:218 ./include/linux/refcount.h:236 ./include/net/nexthop.h:264 net/ipv4/nexthop.c:2721 net/ipv4/nexthop.c:2937 net/ipv4/nexthop.c:3254) 
[ 776.082804] Code: 70 02 00 00 48 85 db 75 0e eb 1f 48 83 c3 10 48 8b 1b 48 85 db 74 13 3b 43 60 72 ef 76 0c 48 83 c3 08 48 8b 1b 48 85 db 75 ed <8b> 53 68 4c 8d 63 68 85 d2 0f 84 f1 02 00 00 8d 4a 01 89 d0 f0 41
All code
========
   0:	70 02                	jo     0x4
   2:	00 00                	add    %al,(%rax)
   4:	48 85 db             	test   %rbx,%rbx
   7:	75 0e                	jne    0x17
   9:	eb 1f                	jmp    0x2a
   b:	48 83 c3 10          	add    $0x10,%rbx
   f:	48 8b 1b             	mov    (%rbx),%rbx
  12:	48 85 db             	test   %rbx,%rbx
  15:	74 13                	je     0x2a
  17:	3b 43 60             	cmp    0x60(%rbx),%eax
  1a:	72 ef                	jb     0xb
  1c:	76 0c                	jbe    0x2a
  1e:	48 83 c3 08          	add    $0x8,%rbx
  22:	48 8b 1b             	mov    (%rbx),%rbx
  25:	48 85 db             	test   %rbx,%rbx
  28:	75 ed                	jne    0x17
  2a:*	8b 53 68             	mov    0x68(%rbx),%edx		<-- trapping instruction
  2d:	4c 8d 63 68          	lea    0x68(%rbx),%r12
  31:	85 d2                	test   %edx,%edx
  33:	0f 84 f1 02 00 00    	je     0x32a
  39:	8d 4a 01             	lea    0x1(%rdx),%ecx
  3c:	89 d0                	mov    %edx,%eax
  3e:	f0                   	lock
  3f:	41                   	rex.B

Code starting with the faulting instruction
===========================================
   0:	8b 53 68             	mov    0x68(%rbx),%edx
   3:	4c 8d 63 68          	lea    0x68(%rbx),%r12
   7:	85 d2                	test   %edx,%edx
   9:	0f 84 f1 02 00 00    	je     0x300
   f:	8d 4a 01             	lea    0x1(%rdx),%ecx
  12:	89 d0                	mov    %edx,%eax
  14:	f0                   	lock
  15:	41                   	rex.B
[  776.082933] RSP: 0018:ffffaacb4216f860 EFLAGS: 00010246
[  776.082974] RAX: 0000000000000065 RBX: 0000000000000000 RCX: 0000000000000000
[  776.083027] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d73ac00
[  776.083079] RBP: ffffaacb4216fab0 R08: ffff8a7ac1d1d928 R09: ffff8a7ac3e02780
[  776.083132] R10: ffffaacb4216f860 R11: ffff8a7ac3e027c8 R12: ffffaacb4216fb60
[  776.083184] R13: 0000000000000000 R14: 0000000000000001 R15: ffff8a7ac3e027c8
[  776.083238] FS:  00007fc8b597c800(0000) GS:ffff8a7afed80000(0000) knlGS:0000000000000000
[  776.083295] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  776.083339] CR2: 0000000000000068 CR3: 000000000b362003 CR4: 0000000000772ef0
[  776.083393] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  776.083450] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  776.083512] PKRU: 55555554
[  776.083539] Call Trace:
[  776.083559]  <TASK>
[  776.083583] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434) 
[  776.083619] ? page_fault_oops (arch/x86/mm/fault.c:714) 
[  776.083654] ? mas_topiary_replace (lib/maple_tree.c:2628) 
[  776.083697] ? rtm_new_nexthop (net/ipv4/nexthop.c:553 net/ipv4/nexthop.c:2701 net/ipv4/nexthop.c:2937 net/ipv4/nexthop.c:3254) 
[  776.083730] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:92 arch/x86/mm/fault.c:1488 arch/x86/mm/fault.c:1538) 
[  776.083761] ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[  776.083795] ? rtm_new_nexthop (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/linux/refcount.h:136 ./include/linux/refcount.h:142 ./include/linux/refcount.h:218 ./include/linux/refcount.h:236 ./include/net/nexthop.h:264 net/ipv4/nexthop.c:2721 net/ipv4/nexthop.c:2937 net/ipv4/nexthop.c:3254) 
[  776.083827] ? virtqueue_add_sgs (./include/linux/slab.h:905 drivers/virtio/virtio_ring.c:492 drivers/virtio/virtio_ring.c:564 drivers/virtio/virtio_ring.c:2282 drivers/virtio/virtio_ring.c:2316) 
[  776.083870] ? __pfx_rtm_new_nexthop (net/ipv4/nexthop.c:3225) 
[  776.083911] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[  776.083952] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[  776.083984] ? __remove_hrtimer (kernel/time/hrtimer.c:1133) 
[  776.084016] ? hrtimer_try_to_cancel.part.0 (kernel/time/hrtimer.c:1385) 
[  776.084058] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[  776.084093] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[  776.084126] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[  776.084159] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[  776.084191] ____sys_sendmsg (net/socket.c:709 net/socket.c:724 net/socket.c:2563) 
[  776.084223] ? copy_msghdr_from_user (net/socket.c:2503) 
[  776.084264] ___sys_sendmsg (net/socket.c:2619) 
[  776.084297] __sys_sendmsg (net/socket.c:2649) 
[  776.084329] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[  776.084361] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  776.084403] RIP: 0033:0x7fc8b5b889a7
[ 776.084436] 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)
[  776.084565] RSP: 002b:00007ffd21697438 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  776.084623] RAX: ffffffffffffffda RBX: 00007ffd21697fc0 RCX: 00007fc8b5b889a7
[  776.084676] RDX: 0000000000000000 RSI: 00007ffd216974a0 RDI: 0000000000000005
[  776.084729] RBP: 00007ffd21697960 R08: 0000000000000002 R09: 0000000000000000
[  776.084781] R10: 00007fc8b5a41708 R11: 0000000000000246 R12: 0000000000000001


Finger prints:
rtm_new_nexthop:rtnetlink_rcv_msg:netlink_rcv_skb:netlink_unicast:netlink_sendmsg