======================================
| [  340.327645] #PF: supervisor read access in kernel mode
| [  340.327691] #PF: error_code(0x0000) - not-present page
| [  340.327730] PGD 8604067 P4D 8604067 PUD 7471067 PMD 0
| [  340.327769] Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
[  340.327869] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  340.327913] 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) 
[ 340.327959] Code: 80 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:	80 02 00             	addb   $0x0,(%rdx)
   3:	00 48 85             	add    %cl,-0x7b(%rax)
   6:	db 75 0e             	(bad)  0xe(%rbp)
   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
[  340.328084] RSP: 0018:ffff99a7c177f860 EFLAGS: 00010246
[  340.328118] RAX: 000000000000000a RBX: 0000000000000000 RCX: 0000000000000000
[  340.328179] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8c2ac6b8ea80
[  340.328232] RBP: ffff99a7c177fab0 R08: ffff8c2ac48234a8 R09: ffff8c2ac2ccd280
[  340.328288] R10: 0000000000000000 R11: ffff8c2ac2ccd2c8 R12: ffff99a7c177fb60
[  340.328339] R13: ffff8c2ac48234a8 R14: 0000000000000001 R15: ffff8c2ac2ccd2c8
[  340.328392] FS:  00007fbd6f2a1800(0000) GS:ffff8c2afec00000(0000) knlGS:0000000000000000
[  340.328449] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  340.328496] CR2: 0000000000000068 CR3: 0000000006632004 CR4: 0000000000772ef0
[  340.328548] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  340.328604] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  340.328655] PKRU: 55555554
[  340.328672] Call Trace:
[  340.328693]  <TASK>
[  340.328717] ? __die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434) 
[  340.328751] ? page_fault_oops (arch/x86/mm/fault.c:714) 
[  340.328784] ? mas_topiary_replace (lib/maple_tree.c:2628) 
[  340.328824] ? nexthop_alloc (net/ipv4/nexthop.c:539) 
[  340.328850] ? 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) 
[  340.328887] ? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[  340.328919] ? 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) 
[  340.328950] ? virtio_fs_enqueue_req (fs/fuse/virtio_fs.c:709 fs/fuse/virtio_fs.c:1406) 
[  340.328990] ? virtqueue_notify (drivers/virtio/virtio_ring.c:2490) 
[  340.329024] ? virtio_fs_enqueue_req (fs/fuse/virtio_fs.c:1463) 
[  340.329064] ? __pfx_rtm_new_nexthop (net/ipv4/nexthop.c:3225) 
[  340.329104] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[  340.329144] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[  340.329179] ? __remove_hrtimer (kernel/time/hrtimer.c:1133) 
[  340.329210] ? hrtimer_try_to_cancel.part.0 (kernel/time/hrtimer.c:1385) 
[  340.329249] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[  340.329282] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[  340.329314] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[  340.329345] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[  340.329378] ____sys_sendmsg (net/socket.c:709 net/socket.c:724 net/socket.c:2563) 
[  340.329409] ? copy_msghdr_from_user (net/socket.c:2503) 
[  340.329449] ___sys_sendmsg (net/socket.c:2619) 
[  340.329481] __sys_sendmsg (net/socket.c:2649) 
[  340.329510] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[  340.329542] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  340.329581] RIP: 0033:0x7fbd6f4ad9a7
[ 340.329613] 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)
[  340.329732] RSP: 002b:00007fff8fad92d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  340.329784] RAX: ffffffffffffffda RBX: 00007fff8fad9e48 RCX: 00007fbd6f4ad9a7
[  340.329835] RDX: 0000000000000000 RSI: 00007fff8fad9340 RDI: 0000000000000005
[  340.329887] RBP: 00007fff8fad9800 R08: 0000000000000000 R09: 0000000000000000
[  340.329939] R10: 00007fbd6f366708 R11: 0000000000000246 R12: 00007fff8fadba29


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