======================================
| [   40.617512][  T308] veth2: entered promiscuous mode
| [   48.256001][    C2] ------------[ cut here ]------------
| [   48.256348][    C2] kernel BUG at net/core/skbuff.c:2813!
| [   48.256529][    C2] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
[   48.256954][    C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 48.257290][ C2] RIP: 0010:__pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[ 48.257494][ C2] Code: e9 52 f7 ff ff 48 8b 7c 24 38 be 02 00 00 00 e8 8e 9c ff ff 48 83 c4 58 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 90 <0f> 0b 48 c7 44 24 38 00 00 00 00 e9 dc fa ff ff 84 c9 0f 84 4b f9
All code
========
   0:	e9 52 f7 ff ff       	jmp    0xfffffffffffff757
   5:	48 8b 7c 24 38       	mov    0x38(%rsp),%rdi
   a:	be 02 00 00 00       	mov    $0x2,%esi
   f:	e8 8e 9c ff ff       	call   0xffffffffffff9ca2
  14:	48 83 c4 58          	add    $0x58,%rsp
  18:	31 c0                	xor    %eax,%eax
  1a:	5b                   	pop    %rbx
  1b:	41 5c                	pop    %r12
  1d:	41 5d                	pop    %r13
  1f:	41 5e                	pop    %r14
  21:	41 5f                	pop    %r15
  23:	5d                   	pop    %rbp
  24:	c3                   	ret
  25:	cc                   	int3
  26:	cc                   	int3
  27:	cc                   	int3
  28:	cc                   	int3
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	48 c7 44 24 38 00 00 	movq   $0x0,0x38(%rsp)
  33:	00 00 
  35:	e9 dc fa ff ff       	jmp    0xfffffffffffffb16
  3a:	84 c9                	test   %cl,%cl
  3c:	0f                   	.byte 0xf
  3d:	84 4b f9             	test   %cl,-0x7(%rbx)

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	48 c7 44 24 38 00 00 	movq   $0x0,0x38(%rsp)
   9:	00 00 
   b:	e9 dc fa ff ff       	jmp    0xfffffffffffffaec
  10:	84 c9                	test   %cl,%cl
  12:	0f                   	.byte 0xf
  13:	84 4b f9             	test   %cl,-0x7(%rbx)
[   48.258012][    C2] RSP: 0018:ffffc900002209c8 EFLAGS: 00010282
[   48.258203][    C2] RAX: 00000000fffffff2 RBX: ffff8880071c9af4 RCX: 0000000000000004
[   48.258423][    C2] RDX: dffffc0000000000 RSI: 1ffff11000e57091 RDI: ffff8880072b8488
[   48.258638][    C2] RBP: ffffc90000220a48 R08: 0000000000000008 R09: ffff8880071c9b3c
[   48.258855][    C2] R10: ffff8880071c9b40 R11: 6b6b6b6b6b6b6b6b R12: ffff8880071c9a80
[   48.259072][    C2] R13: ffff8880072ba860 R14: 0000000000000001 R15: ffffffffbdfcddb0
[   48.259290][    C2] FS:  00007fa290241300(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   48.259547][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   48.259772][    C2] CR2: 00007fffe4a5fd80 CR3: 000000000477c002 CR4: 0000000000770ef0
[   48.260038][    C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   48.260299][    C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   48.260518][    C2] PKRU: 55555554
[   48.260631][    C2] Call Trace:
[   48.260740][    C2]  <IRQ>
[ 48.260816][ C2] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) 
[ 48.260930][ C2] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) 
[ 48.261041][ C2] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[ 48.261189][ C2] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) 
[ 48.261332][ C2] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[ 48.261475][ C2] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[ 48.261622][ C2] ? handle_invalid_op (arch/x86/kernel/traps.c:213) 
[ 48.261764][ C2] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[ 48.261912][ C2] ? exc_invalid_op (arch/x86/kernel/traps.c:265) 
[ 48.262057][ C2] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[ 48.262250][ C2] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[ 48.262423][ C2] ? __pskb_pull_tail (net/core/skbuff.c:2813) 
[ 48.262583][ C2] ? raw_v4_input (net/ipv4/raw.c:165) 
[ 48.262755][ C2] icmp_rcv (./include/linux/skbuff.h:2731 ./include/linux/skbuff.h:2739 ./include/linux/skbuff.h:2744 net/ipv4/icmp.c:1216) 
[ 48.262880][ C2] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) 
[ 48.263034][ C2] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) 
[ 48.263190][ C2] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 48.263346][ C2] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 48.263490][ C2] ? ip_rcv_finish_core.constprop.0 (./include/net/net_namespace.h:383 ./include/linux/netdevice.h:2654 net/ipv4/ip_input.c:372) 
[ 48.263672][ C2] 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) 
[ 48.263821][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 48.263998][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 48.264177][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) 
[ 48.264352][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 48.264526][ C2] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) 
[ 48.264742][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) 
[ 48.264962][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 48.265136][ C2] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:6051) 
[ 48.265310][ C2] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:6053) 
[ 48.265484][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 48.265667][ C2] __napi_poll.constprop.0 (net/core/dev.c:6703) 
[ 48.265840][ C2] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) 
[ 48.266015][ C2] ? __pfx_net_rx_action (net/core/dev.c:6850) 
[ 48.266188][ C2] ? hlock_class (kernel/locking/lockdep.c:223) 
[ 48.266363][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 48.266537][ C2] ? hrtimer_interrupt (kernel/time/hrtimer.c:1828) 
[ 48.266712][ C2] __do_softirq (kernel/softirq.c:553) 
[ 48.266894][ C2] ? netif_rx (./include/linux/bottom_half.h:33 net/core/dev.c:5195 net/core/dev.c:5184) 
[ 48.267026][ C2] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) 
[   48.267162][    C2]  </IRQ>
[   48.267250][    C2]  <TASK>
[ 48.267338][ C2] __local_bh_enable_ip (kernel/softirq.c:381) 
[ 48.267515][ C2] netif_rx (net/core/dev.c:5197) 
[ 48.267646][ C2] dev_loopback_xmit (net/core/dev.c:3910) 
[ 48.267822][ C2] ip_mc_finish_output (net/ipv4/ip_output.c:363) 
[ 48.267989][ C2] ip_mc_output (./include/linux/netfilter.h:315 ./include/linux/netfilter.h:308 net/ipv4/ip_output.c:399) 
[ 48.268161][ C2] ip_push_pending_frames (./include/net/dst.h:450 ./include/net/dst.h:448 net/ipv4/ip_output.c:129 net/ipv4/ip_output.c:1496 net/ipv4/ip_output.c:1516) 
[ 48.268340][ C2] raw_sendmsg (net/ipv4/raw.c:648) 
[ 48.268518][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 48.268694][ C2] ? __pfx_raw_sendmsg (net/ipv4/raw.c:476) 
[ 48.268877][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 48.269051][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 48.269227][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 48.269401][ C2] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) 
[ 48.269590][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 48.269763][ C2] ? 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:228) 
[ 48.269945][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 48.270120][ C2] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) 
[ 48.270293][ C2] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) 
[ 48.270467][ C2] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[ 48.270647][ C2] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[ 48.270821][ C2] ? __pfx___sys_sendto (net/socket.c:2161) 
[ 48.270995][ C2] ? do_user_addr_fault (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 ./include/linux/mm.h:686 arch/x86/mm/fault.c:1357) 
[ 48.271168][ C2] ? reacquire_held_locks (kernel/locking/lockdep.c:5279) 
[ 48.271345][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 48.271520][ C2] ? do_user_addr_fault (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1357) 
[ 48.271693][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 48.271863][ C2] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2735 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3289 kernel/locking/rwsem.c:1347) 
[ 48.272036][ C2] ? __pfx___up_read (kernel/locking/rwsem.c:1339) 
[ 48.272212][ C2] ? do_user_addr_fault (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1357) 
[ 48.272385][ C2] __x64_sys_sendto (net/socket.c:2199) 
[ 48.272559][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 48.272771][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 48.272951][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   48.273180][    C2] RIP: 0033:0x7fa29051785a
[ 48.273362][ C2] 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
[   48.273934][    C2] RSP: 002b:00007fffe4a60798 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   48.274173][    C2] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007fa29051785a
[   48.274392][    C2] RDX: 0000000000000040 RSI: 0000000000629340 RDI: 0000000000000005
[   48.274622][    C2] RBP: 00007fffe4a607f0 R08: 00000000004185e0 R09: 0000000000000010
[   48.274834][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000054


Finger prints:
__pskb_pull_tail:icmp_rcv:ip_protocol_deliver_rcu:ip_local_deliver_finish