======================================
| [ 1724.447008] ------------[ cut here ]------------
| [ 1724.447051] rcuref - imbalanced put()
| [ 1724.447052] WARNING: lib/rcuref.c:266 at 0x0, CPU#3: mausezahn/30368
| [ 1724.447115] Modules linked in: xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core ipt_rpfilter netdevsim psample act_tunnel_key bareudp vxcan can_dev xfrm_interface ip_gre macsec ipvlan cls_matchall ip6_gre gre pktgen xt_length act_ct nf_flow_table xt_HL amt nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 act_gact unix_diag cls_flower sch_prio xt_mark sch_ingress act_mirred cls_basic sch_fq_codel ip6t_rpfilter nft_compat nf_tables vxlan mpls_gso mpls_iptunnel mpls_router
[ 1724.447410] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1724.447444] RIP: 0010:rcuref_put_slowpath (lib/rcuref.c:266 (discriminator 4))
[ 1724.447478] Code: c0 75 0d c3 81 fe ff ff ff bf 77 0f 85 f6 78 03 31 c0 c3 c7 07 00 00 00 a0 eb f5 48 83 ec 08 48 89 3c 24 48 8d 3d 30 04 4a 01 <67> 48 0f b9 3a 48 8b 14 24 31 c0 c7 02 00 00 00 e0 48 83 c4 08 c3
All code
========
   0:	c0 75 0d c3          	shlb   $0xc3,0xd(%rbp)
   4:	81 fe ff ff ff bf    	cmp    $0xbfffffff,%esi
   a:	77 0f                	ja     0x1b
   c:	85 f6                	test   %esi,%esi
   e:	78 03                	js     0x13
  10:	31 c0                	xor    %eax,%eax
  12:	c3                   	ret
  13:	c7 07 00 00 00 a0    	movl   $0xa0000000,(%rdi)
  19:	eb f5                	jmp    0x10
  1b:	48 83 ec 08          	sub    $0x8,%rsp
  1f:	48 89 3c 24          	mov    %rdi,(%rsp)
  23:	48 8d 3d 30 04 4a 01 	lea    0x14a0430(%rip),%rdi        # 0x14a045a
  2a:*	67 48 0f b9 3a       	ud1    (%edx),%rdi		<-- trapping instruction
  2f:	48 8b 14 24          	mov    (%rsp),%rdx
  33:	31 c0                	xor    %eax,%eax
  35:	c7 02 00 00 00 e0    	movl   $0xe0000000,(%rdx)
  3b:	48 83 c4 08          	add    $0x8,%rsp
  3f:	c3                   	ret

Code starting with the faulting instruction
===========================================
   0:	67 48 0f b9 3a       	ud1    (%edx),%rdi
   5:	48 8b 14 24          	mov    (%rsp),%rdx
   9:	31 c0                	xor    %eax,%eax
   b:	c7 02 00 00 00 e0    	movl   $0xe0000000,(%rdx)
  11:	48 83 c4 08          	add    $0x8,%rsp
  15:	c3                   	ret
[ 1724.447576] RSP: 0018:ff74f7b8402cb768 EFLAGS: 00010292
[ 1724.447607] RAX: 00000000dfffffff RBX: ff409b4bc7db7780 RCX: ff409b4bc7db7780
[ 1724.447655] RDX: ff409b4bc7db77e8 RSI: 00000000dfffffff RDI: ffffffffb967e6f0
[ 1724.447698] RBP: ff74f7b8402cb7d8 R08: ff409b4bc18e1e00 R09: 0000000000000001
[ 1724.447736] R10: ff409b4bc4a3f840 R11: 0000000000000000 R12: ff74f7b8402cb858
[ 1724.447788] R13: ff409b4bc1c1b600 R14: 00000000010200c0 R15: 0000000080000000
[ 1724.447826] FS:  00007fccf3952c40(0000) GS:ff409b4c4514c000(0000) knlGS:0000000000000000
[ 1724.447870] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1724.447908] CR2: 00007ffcb3645e98 CR3: 0000000006c72004 CR4: 0000000000771ef0
[ 1724.447956] PKRU: 55555554
[ 1724.447978] Call Trace:
[ 1724.447995]  <TASK>
[ 1724.448010]  dst_release (./arch/x86/include/asm/preempt.h:95 (discriminator 1) ./include/linux/rcuref.h:174 (discriminator 1) net/core/dst.c:167 (discriminator 1))
[ 1724.448039]  rt_cache_route (net/ipv4/route.c:1518)
[ 1724.448065]  ? dst_alloc (./include/net/dst_ops.h:59 net/core/dst.c:75 net/core/dst.c:93)
[ 1724.448085]  rt_set_nexthop.isra.0 (net/ipv4/route.c:1622 (discriminator 1))
[ 1724.448116]  ? rt_dst_alloc (net/ipv4/route.c:1654)
[ 1724.448138]  ip_route_output_key_hash_rcu (./include/net/lwtunnel.h:140 net/ipv4/route.c:2682 net/ipv4/route.c:2875)
[ 1724.448167]  ip_route_output_flow (net/ipv4/route.c:2705 ./include/net/route.h:169 net/ipv4/route.c:2932)
[ 1724.448188]  udp_tunnel_dst_lookup (net/ipv4/udp_tunnel_core.c:261 (discriminator 1))
[ 1724.448217] vxlan_xmit_one (drivers/net/vxlan/vxlan_core.c:2472 (discriminator 4)) vxlan
[ 1724.448250]  ? __fuse_simple_request (fs/fuse/dev.c:702)
[ 1724.448280]  ? vxlan_xmit (drivers/net/vxlan/vxlan_core.c:2829) vxlan
[ 1724.448307] vxlan_xmit (drivers/net/vxlan/vxlan_core.c:2829) vxlan
[ 1724.448338]  ? filemap_get_read_batch (mm/filemap.c:2477)
[ 1724.448367]  ? get_page_from_freelist (mm/page_alloc.c:1226 (discriminator 1) mm/page_alloc.c:1843 (discriminator 1) mm/page_alloc.c:1853 (discriminator 1) mm/page_alloc.c:3879 (discriminator 1))
[ 1724.448397]  ? dev_hard_start_xmit (./include/linux/netdevice.h:5272 ./include/linux/netdevice.h:5281 net/core/dev.c:3853 net/core/dev.c:3869)
[ 1724.448421]  dev_hard_start_xmit (./include/linux/netdevice.h:5272 ./include/linux/netdevice.h:5281 net/core/dev.c:3853 net/core/dev.c:3869)
[ 1724.448442]  __dev_queue_xmit (net/core/dev.c:4817)
[ 1724.448467]  ? __alloc_skb (net/core/skbuff.c:706)
[ 1724.448492]  ? alloc_skb_with_frags (./include/linux/skbuff.h:1383 net/core/skbuff.c:6715)
[ 1724.448518]  packet_sendmsg (net/packet/af_packet.c:3076 (discriminator 1) net/packet/af_packet.c:3108 (discriminator 1))
[ 1724.448542]  ? account_locked_vm (./include/linux/mmap_lock.h:355 mm/util.c:559 mm/util.c:549)
[ 1724.448566]  __sys_sendto (net/socket.c:721 (discriminator 1) net/socket.c:733 (discriminator 1) net/socket.c:2222 (discriminator 1))
[ 1724.448592]  __x64_sys_sendto (net/socket.c:2229 (discriminator 1) net/socket.c:2225 (discriminator 1) net/socket.c:2225 (discriminator 1))
[ 1724.448614]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[ 1724.448638]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:131)
[ 1724.448668] RIP: 0033:0x7fccf3b05c5e
[ 1724.448692] Code: 4d 89 d8 e8 14 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 14 bd 00 00       	call   0xbd1c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[ 1724.448789] RSP: 002b:00007ffcb364bda0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[ 1724.448834] RAX: ffffffffffffffda RBX: 000055bbdd9eb830 RCX: 00007fccf3b05c5e
[ 1724.448880] RDX: 0000000000000064 RSI: 000055bbdd9ebac2 RDI: 0000000000000005
[ 1724.448918] RBP: 00007ffcb364bdb0 R08: 00007ffcb364be00 R09: 0000000000000014
[ 1724.448959] R10: 0000000000000000 R11: 0000000000000202 R12: 000055bbdd9ebac2
[ 1724.448995] R13: 0000000000000064 R14: 0000000000000005 R15: 000055bbb543a890
| [ 1724.449052] ---[ end trace 0000000000000000 ]---
| [ 1724.457063] mausezahn (30368) used greatest stack depth: 11616 bytes left
| [ 1724.730986] Oops: general protection fault, probably for non-canonical address 0x50000010000004a: 0000 [#1] SMP
| [ 1724.731108] Tainted: [W]=WARN
[ 1724.731131] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1724.731164] RIP: 0010:dst_dev_put (net/core/dst.c:149)
[ 1724.731194] Code: e8 57 56 29 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 0f 1f 44 00 00 b8 02 00 00 00 55 48 8b 2f 53 48 89 fb 66 89 47 3a 48 8b 47 08 <48> 8b 40 38 48 85 c0 74 05 48 89 ee ff d0 48 c7 43 28 40 33 57 b8
All code
========
   0:	e8 57 56 29 00       	call   0x29565c
   5:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
   c:	f3 0f 1e fa          	endbr64
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	b8 02 00 00 00       	mov    $0x2,%eax
  1a:	55                   	push   %rbp
  1b:	48 8b 2f             	mov    (%rdi),%rbp
  1e:	53                   	push   %rbx
  1f:	48 89 fb             	mov    %rdi,%rbx
  22:	66 89 47 3a          	mov    %ax,0x3a(%rdi)
  26:	48 8b 47 08          	mov    0x8(%rdi),%rax
  2a:*	48 8b 40 38          	mov    0x38(%rax),%rax		<-- trapping instruction
  2e:	48 85 c0             	test   %rax,%rax
  31:	74 05                	je     0x38
  33:	48 89 ee             	mov    %rbp,%rsi
  36:	ff d0                	call   *%rax
  38:	48 c7 43 28 40 33 57 	movq   $0xffffffffb8573340,0x28(%rbx)
  3f:	b8 

Code starting with the faulting instruction
===========================================
   0:	48 8b 40 38          	mov    0x38(%rax),%rax
   4:	48 85 c0             	test   %rax,%rax
   7:	74 05                	je     0xe
   9:	48 89 ee             	mov    %rbp,%rsi
   c:	ff d0                	call   *%rax
   e:	48 c7 43 28 40 33 57 	movq   $0xffffffffb8573340,0x28(%rbx)
  15:	b8 
[ 1724.731302] RSP: 0018:ff74f7b840077d48 EFLAGS: 00010282
[ 1724.731329] RAX: 0500000100000012 RBX: ff409b4bc303de40 RCX: 0000000000000003
[ 1724.731377] RDX: 00665c6bfac38f78 RSI: ffffffffffffffff RDI: ff409b4bc303de40
[ 1724.731414] RBP: 000000000000002f R08: ff409b4bc32b6900 R09: 00000000002a000e
[ 1724.731456] R10: ff409b4bc1034200 R11: ff409b4bc32b6900 R12: ff409b4bc18e1ee8
[ 1724.731496] R13: ff74f7b840077e08 R14: 0000000000000007 R15: 0000000000000000
[ 1724.731533] FS:  0000000000000000(0000) GS:ff409b4c44fcc000(0000) knlGS:0000000000000000
[ 1724.731577] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1724.731610] CR2: 00007f99b4f60a48 CR3: 000000003d446001 CR4: 0000000000771ef0
[ 1724.731654] PKRU: 55555554
[ 1724.731673] Call Trace:
[ 1724.731691]  <TASK>
[ 1724.731707]  rt_fibinfo_free_cpus.part.0 (net/ipv4/fib_semantics.c:196)
[ 1724.731739]  fib_nh_common_release (net/ipv4/fib_semantics.c:207)
[ 1724.731769]  free_fib_info_rcu (./include/net/nexthop.h:480 net/ipv4/fib_semantics.c:229)
[ 1724.731795]  rcu_core (kernel/rcu/tree.c:2612 (discriminator 1) kernel/rcu/tree.c:2857 (discriminator 1))
[ 1724.731819]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[ 1724.731849]  ? sort_range (kernel/smpboot.c:103)
[ 1724.731870]  run_ksoftirqd (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:479 kernel/softirq.c:1064 kernel/softirq.c:1055)
[ 1724.731891]  smpboot_thread_fn (kernel/smpboot.c:160)
[ 1724.731918]  kthread (kernel/kthread.c:463)
[ 1724.731940]  ? kthreads_online_cpu (kernel/kthread.c:412)
[ 1724.731972]  ? kthreads_online_cpu (kernel/kthread.c:412)
[ 1724.731995]  ret_from_fork (arch/x86/kernel/process.c:164)
[ 1724.732017]  ? kthreads_online_cpu (kernel/kthread.c:412)


Finger prints:
rcuref_put_slowpath:dst_release:rt_cache_route:ip_route_output_key_hash_rcu:ip_route_output_flow
dst_dev_put:fib_nh_common_release:free_fib_info_rcu:rcu_core:handle_softirqs