======================================
| [ 1090.278682][ T8115] 1 lock held by mausezahn/8115:
| [ 1090.278873][ T8115] #0: ffffffffa776f640 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit (./include/linux/bottom_half.h:20 ./include/linux/rcupdate.h:901 net/core/dev.c:4555) 
| [ 1090.279225][ T8115]
| [ 1090.279225][ T8115] stack backtrace:
[ 1090.279451][ T8115] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1090.279454][ T8115] Call Trace:
[ 1090.279456][ T8115]  <TASK>
[ 1090.279459][ T8115] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1090.279468][ T8115] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 1090.279480][ T8115] dev_hard_start_xmit (./include/net/net_namespace.h:418 ./include/linux/netdevice.h:2695 net/core/dev.c:2466 net/core/dev.c:3772 net/core/dev.c:3793) 
[ 1090.279492][ T8115] __dev_queue_xmit (net/core/dev.h:340 net/core/dev.c:4631) 
[ 1090.279496][ T8115] ? _copy_from_iter (./arch/x86/include/asm/uaccess_64.h:126 ./arch/x86/include/asm/uaccess_64.h:141 lib/iov_iter.c:55 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:300 ./include/linux/iov_iter.h:328 lib/iov_iter.c:249 lib/iov_iter.c:260) 
[ 1090.279509][ T8115] ? __pfx_vlan_parse_protocol (net/8021q/vlan_dev.c:484) 
[ 1090.279521][ T8115] ? __pfx___dev_queue_xmit (net/core/dev.c:4538) 
[ 1090.279526][ T8115] ? packet_parse_headers (./include/linux/skbuff.h:3108 net/packet/af_packet.c:1992) 
[ 1090.279536][ T8115] ? __pfx_sock_alloc_send_pskb (net/core/sock.c:2922) 
[ 1090.279543][ T8115] ? __pfx_packet_parse_headers (net/packet/af_packet.c:1977) 
[ 1090.279548][ T8115] ? skb_copy_datagram_from_iter (net/core/datagram.c:564) 
[ 1090.279555][ T8115] ? dev_get_by_index (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/dev.c:982) 
[ 1090.279566][ T8115] packet_snd (net/packet/af_packet.c:3131) 
[ 1090.279579][ T8115] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 1090.279582][ T8115] ? __might_fault (mm/memory.c:6858 mm/memory.c:6851) 
[ 1090.279588][ T8115] ? __pfx_packet_snd (net/packet/af_packet.c:2995) 
[ 1090.279591][ T8115] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 1090.279594][ T8115] ? __might_fault (mm/memory.c:6858 mm/memory.c:6851) 
[ 1090.279602][ T8115] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 1090.279608][ T8115] ? __might_fault (mm/memory.c:6858 mm/memory.c:6851) 
[ 1090.279619][ T8115] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2177) 
[ 1090.279626][ T8115] ? __pfx___sys_sendto (net/socket.c:2144) 
[ 1090.279642][ T8115] ? sock_ioctl (net/socket.c:1311) 
[ 1090.279651][ T8115] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 1090.279657][ T8115] ? do_user_addr_fault (./include/linux/mmap_lock.h:218 arch/x86/mm/fault.c:1416) 
[ 1090.279668][ T8115] ? do_user_addr_fault (./include/linux/mmap_lock.h:218 arch/x86/mm/fault.c:1416) 
[ 1090.279676][ T8115] __x64_sys_sendto (net/socket.c:2180) 
[ 1090.279680][ T8115] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 1090.279685][ T8115] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 1090.279692][ T8115] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1090.279697][ T8115] RIP: 0033:0x7f7f53891a4a
[ 1090.279702][ T8115] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
All code
========
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb b8                	jmp    0xffffffffffffffc5
   d:	0f 1f 00             	nopl   (%rax)
  10:	f3 0f 1e fa          	endbr64
  14:	41 89 ca             	mov    %ecx,%r10d
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 15                	jne    0x38
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 7e                	ja     0xb0
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	41 54                	push   %r12
  3a:	48 83 ec 30          	sub    $0x30,%rsp
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 7e                	ja     0x86
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	41 54                	push   %r12
  10:	48 83 ec 30          	sub    $0x30,%rsp
  14:	44                   	rex.R
  15:	89                   	.byte 0x89
[ 1090.279705][ T8115] RSP: 002b:00007fff802d9c48 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 1090.279709][ T8115] RAX: ffffffffffffffda RBX: 000000003893a9d0 RCX: 00007f7f53891a4a
[ 1090.279711][ T8115] RDX: 0000000000000086 RSI: 000000003893ace2 RDI: 0000000000000005
[ 1090.279713][ T8115] RBP: 000000003893ace2 R08: 00007fff802d9c50 R09: 0000000000000014
[ 1090.279715][ T8115] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 1090.279716][ T8115] R13: 0000000000000086 R14: 00007fff802d9c50 R15: 0000000000000000
| [ 1108.780555][ T8314] ==================================================================
| [ 1108.780804][ T8314] BUG: KASAN: null-ptr-deref in nexthop_create_group (./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) 
| [ 1108.781039][ T8314] Read of size 4 at addr 0000000000000068 by task ip/8314
| [ 1108.781227][ T8314]
[ 1108.781311][ T8314] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1108.781313][ T8314] Call Trace:
[ 1108.781315][ T8314]  <TASK>
[ 1108.781317][ T8314] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1108.781324][ T8314] kasan_report (mm/kasan/report.c:636) 
[ 1108.781332][ T8314] ? nexthop_create_group (./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) 
[ 1108.781338][ T8314] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 1108.781341][ T8314] nexthop_create_group (./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) 
[ 1108.781348][ T8314] ? __pfx_nexthop_create_group (net/ipv4/nexthop.c:2686) 
[ 1108.781352][ T8314] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 1108.781359][ T8314] rtm_new_nexthop (net/ipv4/nexthop.c:2937 net/ipv4/nexthop.c:3254) 
[ 1108.781363][ T8314] ? 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) 
[ 1108.781367][ T8314] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 1108.781372][ T8314] ? __pfx_rtm_new_nexthop (net/ipv4/nexthop.c:3225) 
[ 1108.781384][ T8314] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 1108.781391][ T8314] ? __pfx_rtm_new_nexthop (net/ipv4/nexthop.c:3225) 
[ 1108.781394][ T8314] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 1108.781399][ T8314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 1108.781402][ T8314] ? 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) 
[ 1108.781405][ T8314] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 1108.781410][ T8314] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 1108.781414][ T8314] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 1108.781419][ T8314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 1108.781423][ T8314] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 1108.781431][ T8314] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 1108.781435][ T8314] ? 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) 
[ 1108.781439][ T8314] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 1108.781443][ T8314] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 1108.781446][ T8314] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 1108.781452][ T8314] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 1108.781456][ T8314] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 1108.781462][ T8314] ____sys_sendmsg (net/socket.c:709 net/socket.c:724 net/socket.c:2563) 
[ 1108.781467][ T8314] ? __pfx_____sys_sendmsg (net/socket.c:2509) 
[ 1108.781470][ T8314] ? __pfx_copy_msghdr_from_user (net/socket.c:2489) 
[ 1108.781478][ T8314] ___sys_sendmsg (net/socket.c:2619) 
[ 1108.781481][ T8314] ? 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) 
[ 1108.781485][ T8314] ? __pfx____sys_sendmsg (net/socket.c:2606) 
[ 1108.781490][ T8314] ? usage_skip (kernel/locking/lockdep.c:2316 kernel/locking/lockdep.c:2284) 
[ 1108.781495][ T8314] ? 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) 
[ 1108.781500][ T8314] ? 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) 
[ 1108.781505][ T8314] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 1108.781509][ T8314] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 1108.781513][ T8314] __sys_sendmsg (net/socket.c:2649) 
[ 1108.781516][ T8314] ? __pfx___sys_sendmsg (net/socket.c:2634) 
[ 1108.781522][ T8314] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 1108.781527][ T8314] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 1108.781532][ T8314] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1108.781536][ T8314] RIP: 0033:0x7f8d941e79a7
[ 1108.781540][ T8314] 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)
[ 1108.781542][ T8314] RSP: 002b:00007ffd05743fc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 1108.781546][ T8314] RAX: ffffffffffffffda RBX: 00007ffd05744b38 RCX: 00007f8d941e79a7
[ 1108.781548][ T8314] RDX: 0000000000000000 RSI: 00007ffd05744030 RDI: 0000000000000005
[ 1108.781550][ T8314] RBP: 00007ffd057444f0 R08: 0000000000000000 R09: 0000000000000000
[ 1108.781552][ T8314] R10: 00007f8d940a0708 R11: 0000000000000246 R12: 00007ffd057469d7
[ 1108.781554][ T8314] R13: 0000000067da4467 R14: 0000000000498600 R15: 0000000007792910
| [ 1108.790804][ T8314] Disabling lock debugging due to kernel taint
| [ 1108.791017][ T8314] Oops: general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] PREEMPT SMP KASAN NOPTI
| [ 1108.791387][ T8314] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f]
| [ 1108.791867][ T8314] Tainted: [B]=BAD_PAGE
[ 1108.791984][ T8314] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1108.792170][ T8314] RIP: 0010:nexthop_create_group (./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) 
[ 1108.792361][ T8314] Code: 5c 09 00 00 45 3b 7e 60 72 c0 76 06 49 83 c6 08 eb bc 4d 8d 7e 68 be 04 00 00 00 4c 89 ff e8 c4 a2 27 fe 4c 89 f8 48 c1 e8 03 <42> 0f b6 14 20 4c 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85
All code
========
   0:	5c                   	pop    %rsp
   1:	09 00                	or     %eax,(%rax)
   3:	00 45 3b             	add    %al,0x3b(%rbp)
   6:	7e 60                	jle    0x68
   8:	72 c0                	jb     0xffffffffffffffca
   a:	76 06                	jbe    0x12
   c:	49 83 c6 08          	add    $0x8,%r14
  10:	eb bc                	jmp    0xffffffffffffffce
  12:	4d 8d 7e 68          	lea    0x68(%r14),%r15
  16:	be 04 00 00 00       	mov    $0x4,%esi
  1b:	4c 89 ff             	mov    %r15,%rdi
  1e:	e8 c4 a2 27 fe       	call   0xfffffffffe27a2e7
  23:	4c 89 f8             	mov    %r15,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
  2a:*	42 0f b6 14 20       	movzbl (%rax,%r12,1),%edx		<-- trapping instruction
  2f:	4c 89 f8             	mov    %r15,%rax
  32:	83 e0 07             	and    $0x7,%eax
  35:	83 c0 03             	add    $0x3,%eax
  38:	38 d0                	cmp    %dl,%al
  3a:	7c 08                	jl     0x44
  3c:	84 d2                	test   %dl,%dl
  3e:	0f                   	.byte 0xf
  3f:	85                   	.byte 0x85

Code starting with the faulting instruction
===========================================
   0:	42 0f b6 14 20       	movzbl (%rax,%r12,1),%edx
   5:	4c 89 f8             	mov    %r15,%rax
   8:	83 e0 07             	and    $0x7,%eax
   b:	83 c0 03             	add    $0x3,%eax
   e:	38 d0                	cmp    %dl,%al
  10:	7c 08                	jl     0x1a
  12:	84 d2                	test   %dl,%dl
  14:	0f                   	.byte 0xf
  15:	85                   	.byte 0x85
[ 1108.792885][ T8314] RSP: 0018:ffffc900007d73c8 EFLAGS: 00010202
[ 1108.793074][ T8314] RAX: 000000000000000d RBX: ffff888002b4e6e8 RCX: ffffffffa365e00a
[ 1108.793298][ T8314] RDX: fffffbfff5245891 RSI: 0000000000000008 RDI: ffffffffa922c480
[ 1108.793519][ T8314] RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff5245890
[ 1108.793748][ T8314] R10: ffffffffa922c487 R11: 205d343133385420 R12: dffffc0000000000
[ 1108.793971][ T8314] R13: ffff88800cf00340 R14: 0000000000000000 R15: 0000000000000068
[ 1108.794190][ T8314] FS:  00007f8d93fdb800(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[ 1108.794448][ T8314] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1108.794638][ T8314] CR2: 00007f8d94237423 CR3: 00000000158fe005 CR4: 0000000000772ef0
[ 1108.794863][ T8314] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1108.795089][ T8314] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1108.795311][ T8314] PKRU: 55555554
[ 1108.795427][ T8314] Call Trace:
[ 1108.795542][ T8314]  <TASK>
[ 1108.795630][ T8314] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) 
[ 1108.795756][ T8314] ? exc_general_protection (arch/x86/kernel/traps.c:751 arch/x86/kernel/traps.c:693) 
[ 1108.795909][ T8314] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:617) 
[ 1108.796062][ T8314] ? add_taint (./arch/x86/include/asm/bitops.h:60 ./include/asm-generic/bitops/instrumented-atomic.h:29 kernel/panic.c:605) 
[ 1108.796174][ T8314] ? nexthop_create_group (./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) 
[ 1108.796323][ T8314] ? nexthop_create_group (./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) 
[ 1108.796473][ T8314] ? __pfx_nexthop_create_group (net/ipv4/nexthop.c:2686) 
[ 1108.796624][ T8314] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 1108.796775][ T8314] rtm_new_nexthop (net/ipv4/nexthop.c:2937 net/ipv4/nexthop.c:3254) 
[ 1108.796926][ T8314] ? 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) 
[ 1108.797075][ T8314] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 1108.797188][ T8314] ? __pfx_rtm_new_nexthop (net/ipv4/nexthop.c:3225) 
[ 1108.797344][ T8314] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6952) 
[ 1108.797494][ T8314] ? __pfx_rtm_new_nexthop (net/ipv4/nexthop.c:3225) 
[ 1108.797644][ T8314] rtnetlink_rcv_msg (net/core/rtnetlink.c:6954) 
[ 1108.797793][ T8314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 1108.797945][ T8314] ? 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) 
[ 1108.798098][ T8314] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 1108.798213][ T8314] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 1108.798365][ T8314] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 1108.798516][ T8314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6857) 
[ 1108.798668][ T8314] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 1108.798821][ T8314] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 1108.798969][ T8314] ? 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) 
[ 1108.799120][ T8314] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 1108.799272][ T8314] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 1108.799419][ T8314] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 1108.799567][ T8314] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 1108.799723][ T8314] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 1108.799874][ T8314] ____sys_sendmsg (net/socket.c:709 net/socket.c:724 net/socket.c:2563) 
[ 1108.800022][ T8314] ? __pfx_____sys_sendmsg (net/socket.c:2509) 
[ 1108.800171][ T8314] ? __pfx_copy_msghdr_from_user (net/socket.c:2489) 
[ 1108.800365][ T8314] ___sys_sendmsg (net/socket.c:2619) 
[ 1108.800514][ T8314] ? 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) 
[ 1108.800664][ T8314] ? __pfx____sys_sendmsg (net/socket.c:2606) 
[ 1108.800818][ T8314] ? usage_skip (kernel/locking/lockdep.c:2316 kernel/locking/lockdep.c:2284) 
[ 1108.800971][ T8314] ? 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) 
[ 1108.801120][ T8314] ? 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) 
[ 1108.801270][ T8314] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 1108.801418][ T8314] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 1108.801567][ T8314] __sys_sendmsg (net/socket.c:2649) 
[ 1108.801716][ T8314] ? __pfx___sys_sendmsg (net/socket.c:2634) 
[ 1108.801865][ T8314] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 1108.802019][ T8314] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 1108.802171][ T8314] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1108.802352][ T8314] RIP: 0033:0x7f8d941e79a7
[ 1108.802508][ T8314] 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)
[ 1108.803030][ T8314] RSP: 002b:00007ffd05743fc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 1108.803255][ T8314] RAX: ffffffffffffffda RBX: 00007ffd05744b38 RCX: 00007f8d941e79a7
[ 1108.803477][ T8314] RDX: 0000000000000000 RSI: 00007ffd05744030 RDI: 0000000000000005
[ 1108.803697][ T8314] RBP: 00007ffd057444f0 R08: 0000000000000000 R09: 0000000000000000
[ 1108.803920][ T8314] R10: 00007f8d940a0708 R11: 0000000000000246 R12: 00007ffd057469d7


Finger prints:
kasan_report:kasan_check_range:nexthop_create_group:rtm_new_nexthop:rtnetlink_rcv_msg
nexthop_create_group:rtm_new_nexthop:rtnetlink_rcv_msg:netlink_rcv_skb:netlink_unicast
lockdep_rcu_suspicious:dev_hard_start_xmit:__dev_queue_xmit:packet_snd:__sys_sendto