======================================
| [   40.262327][   T49] br0: port 1(swp1) entered forwarding state
| [   40.295358][    C0] ------------[ cut here ]------------
| [   40.295604][    C0] kernel BUG at net/core/skbuff.c:3505!
| [   40.295773][    C0] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
[   40.296143][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 40.296451][ C0] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 40.296594][ C0] Code: 44 89 14 24 ff d0 0f 1f 00 4c 8b 44 24 08 44 8b 14 24 41 89 c1 eb a5 89 e8 e9 2d fe ff ff 41 ff d5 0f 1f 00 e9 1f fa ff ff 90 <0f> 0b 48 8b 7c 24 10 89 54 24 48 48 89 44 24 40 e8 e7 53 8d fe 8b
All code
========
   0:	44 89 14 24          	mov    %r10d,(%rsp)
   4:	ff d0                	call   *%rax
   6:	0f 1f 00             	nopl   (%rax)
   9:	4c 8b 44 24 08       	mov    0x8(%rsp),%r8
   e:	44 8b 14 24          	mov    (%rsp),%r10d
  12:	41 89 c1             	mov    %eax,%r9d
  15:	eb a5                	jmp    0xffffffffffffffbc
  17:	89 e8                	mov    %ebp,%eax
  19:	e9 2d fe ff ff       	jmp    0xfffffffffffffe4b
  1e:	41 ff d5             	call   *%r13
  21:	0f 1f 00             	nopl   (%rax)
  24:	e9 1f fa ff ff       	jmp    0xfffffffffffffa48
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	48 8b 7c 24 10       	mov    0x10(%rsp),%rdi
  31:	89 54 24 48          	mov    %edx,0x48(%rsp)
  35:	48 89 44 24 40       	mov    %rax,0x40(%rsp)
  3a:	e8 e7 53 8d fe       	call   0xfffffffffe8d5426
  3f:	8b                   	.byte 0x8b

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	48 8b 7c 24 10       	mov    0x10(%rsp),%rdi
   7:	89 54 24 48          	mov    %edx,0x48(%rsp)
   b:	48 89 44 24 40       	mov    %rax,0x40(%rsp)
  10:	e8 e7 53 8d fe       	call   0xfffffffffe8d53fc
  15:	8b                   	.byte 0x8b
[   40.297156][    C0] RSP: 0018:ffffc9000010f7c8 EFLAGS: 00010206
[   40.297346][    C0] RAX: 00000000000087f9 RBX: 0000000000000008 RCX: 1ffff11000af61c9
[   40.297567][    C0] RDX: 000000000000006a RSI: dffffc0000000000 RDI: ffff8880057b0e48
[   40.297788][    C0] RBP: 00000000000087f9 R08: 0000000000000008 R09: fffffbfff26ea5a2
[   40.298015][    C0] R10: ffffffff93752d17 R11: ffffc9000010f501 R12: 0000000000000008
[   40.298234][    C0] R13: 0000000000000000 R14: ffffc9000010f888 R15: ffff888007e18d08
[   40.298471][    C0] FS:  0000000000000000(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   40.298729][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.298912][    C0] CR2: 00007f2ae01ed000 CR3: 0000000013d32006 CR4: 0000000000770ef0
[   40.299130][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   40.299350][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   40.299564][    C0] PKRU: 55555554
[   40.299673][    C0] Call Trace:
[   40.299786][    C0]  <TASK>
[ 40.299861][ C0] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) 
[ 40.299973][ C0] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) 
[ 40.300090][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 40.300236][ C0] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) 
[ 40.300383][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 40.300525][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 40.300669][ C0] ? handle_invalid_op (arch/x86/kernel/traps.c:213) 
[ 40.300814][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 40.300957][ C0] ? exc_invalid_op (arch/x86/kernel/traps.c:265) 
[ 40.301108][ C0] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 40.301257][ C0] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 40.301403][ C0] ? __skb_checksum (net/core/skbuff.c:3441 (discriminator 4)) 
[ 40.301544][ C0] __skb_checksum_complete (net/core/skbuff.c:3643) 
[ 40.301692][ C0] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) 
[ 40.301872][ C0] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) 
[ 40.302017][ C0] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) 
[ 40.302169][ C0] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213) 
[ 40.302280][ C0] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) 
[ 40.302429][ C0] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 40.302570][ C0] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 40.302713][ C0] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 40.302866][ C0] ? ip_rcv_finish_core.constprop.0 (net/ipv4/ip_input.c:367) 
[ 40.303051][ C0] ip_rcv (./include/net/dst.h:460 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) 
[ 40.303157][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 40.303380][ C0] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 40.303528][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) 
[ 40.303682][ C0] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 40.303924][ C0] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) 
[ 40.304108][ C0] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) 
[ 40.304293][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 40.304439][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 40.304581][ C0] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) 
[ 40.304721][ C0] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) 
[ 40.304871][ C0] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 40.305015][ C0] __napi_poll.constprop.0 (net/core/dev.c:6703) 
[ 40.305159][ C0] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) 
[ 40.305308][ C0] ? __pfx_net_rx_action (net/core/dev.c:6850) 
[ 40.305458][ C0] ? __pfx___schedule (kernel/sched/core.c:6608) 
[ 40.305606][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 40.305833][ C0] __do_softirq (kernel/softirq.c:553) 
[ 40.305981][ C0] ? __pfx_run_ksoftirqd (kernel/softirq.c:914) 
[ 40.306134][ C0] run_ksoftirqd (kernel/softirq.c:410 kernel/softirq.c:922 kernel/softirq.c:913) 
[ 40.306280][ C0] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 40.306502][ C0] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 40.306728][ C0] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 40.306894][ C0] kthread (kernel/kthread.c:388) 
[ 40.307004][ C0] ? __pfx_kthread (kernel/kthread.c:341) 
[ 40.307156][ C0] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 40.307303][ C0] ? __pfx_kthread (kernel/kthread.c:341) 


Finger prints:
__skb_checksum:__skb_checksum_complete:icmp_rcv:ip_protocol_deliver_rcu