======================================
| [    2.623662] ip (338) used greatest stack depth: 12344 bytes left
| [    3.236269] ------------[ cut here ]------------
| [    3.236406] kernel BUG at net/core/skbuff.c:3605!
| [    3.236452] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[    3.236536] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[    3.236617] RIP: 0010:skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[ 3.236662] Code: 89 6c 24 0c 41 89 c4 0f 84 1d ff ff ff 45 01 fe 49 63 c7 44 89 74 24 08 49 01 c5 e9 d0 fd ff ff 90 0f 0b 90 e9 3d ff ff ff 90 <0f> 0b 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
All code
========
   0:	89 6c 24 0c          	mov    %ebp,0xc(%rsp)
   4:	41 89 c4             	mov    %eax,%r12d
   7:	0f 84 1d ff ff ff    	je     0xffffffffffffff2a
   d:	45 01 fe             	add    %r15d,%r14d
  10:	49 63 c7             	movslq %r15d,%rax
  13:	44 89 74 24 08       	mov    %r14d,0x8(%rsp)
  18:	49 01 c5             	add    %rax,%r13
  1b:	e9 d0 fd ff ff       	jmp    0xfffffffffffffdf0
  20:	90                   	nop
  21:	0f 0b                	ud2
  23:	90                   	nop
  24:	e9 3d ff ff ff       	jmp    0xffffffffffffff66
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  31:	90                   	nop
  32:	90                   	nop
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[    3.236792] RSP: 0018:ffffb3bc40140a88 EFLAGS: 00010202
[    3.236832] RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000000000
[    3.236906] RDX: 000000000000001c RSI: ffff896b01c0f1c8 RDI: 0000000000000000
[    3.236980] RBP: 0000000000000001 R08: 0000000000000000 R09: ffff896b01c0f840
[    3.237035] R10: 0000000000000018 R11: 000000000000001d R12: 000000007ef2024c
[    3.237090] R13: ffff896b01c0f1c8 R14: 0000000000000008 R15: 000000000000001c
[    3.237146] FS:  0000000000000000(0000) GS:ffff896b3ed80000(0000) knlGS:0000000000000000
[    3.237204] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.237256] CR2: 00007fff817c7000 CR3: 0000000002ed4005 CR4: 0000000000770ef0
[    3.237324] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    3.237382] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    3.237441] PKRU: 55555554
[    3.237463] Call Trace:
[    3.237488]  <IRQ>
[    3.237511] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) 
[    3.237543] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) 
[    3.237580] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[    3.237622] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) 
[    3.237655] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[    3.237702] ? exc_invalid_op (arch/x86/kernel/traps.c:265) 
[    3.237734] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[    3.237768] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[    3.237802] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[    3.237842] ? skb_copy_and_csum_bits (net/core/skbuff.c:3540) 
[    3.237883] icmp_glue_bits (./include/linux/bitops.h:136 ./include/net/checksum.h:90 ./include/net/checksum.h:98 net/ipv4/icmp.c:357) 
[    3.237924] __ip_append_data (net/ipv4/ip_output.c:1166 (discriminator 1)) 
[    3.237958] ? __pfx_icmp_glue_bits (net/ipv4/icmp.c:349) 
[    3.237995] ? __pfx_icmp_glue_bits (net/ipv4/icmp.c:349) 
[    3.238029] ip_append_data (net/ipv4/ip_output.c:1368 net/ipv4/ip_output.c:1347) 
[    3.238059] icmp_push_reply (net/ipv4/icmp.c:370) 
[    3.238096] __icmp_send (./include/net/route.h:249 net/ipv4/icmp.c:772) 
[    3.238125] ? __udp4_lib_lookup (net/ipv4/udp.c:513) 
[    3.238162] ? __udp4_lib_rcv (net/ipv4/udp.c:2441 (discriminator 118)) 
[    3.238195] __udp4_lib_rcv (net/ipv4/udp.c:2441 (discriminator 118)) 
[    3.238224] ? raw_local_deliver (net/ipv4/raw.c:199) 
[    3.238261] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 4)) 
[    3.238304] ip_local_deliver_finish (./include/linux/rcupdate.h:782 net/ipv4/ip_input.c:234) 
[    3.238350] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) 
[    3.238387] process_backlog (./include/linux/rcupdate.h:782 net/core/dev.c:6053) 
[    3.238426] __napi_poll (net/core/dev.c:6703) 
[    3.238462] net_rx_action (net/core/dev.c:6774 net/core/dev.c:6886) 
[    3.238492] __do_softirq (kernel/softirq.c:553) 
[    3.238533] irq_exit_rcu (kernel/softirq.c:427 kernel/softirq.c:632 kernel/softirq.c:644) 
[    3.238566] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1076 (discriminator 14)) 
[    3.238613]  </IRQ>
[    3.238631]  <TASK>
[    3.238651] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:649) 
[    3.238695] RIP: 0010:default_idle (./arch/x86/include/asm/irqflags.h:37 ./arch/x86/include/asm/irqflags.h:72 arch/x86/kernel/process.c:743) 
[ 3.238732] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 73 49 27 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
All code
========
   0:	4c 01 c7             	add    %r8,%rdi
   3:	4c 29 c2             	sub    %r8,%rdx
   6:	e9 72 ff ff ff       	jmp    0xffffffffffffff7d
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d 73 49 27 00 	verw   0x274973(%rip)        # 0x27499b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	fa                   	cli		<-- trapping instruction
  2b:	c3                   	ret
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  37:	00 00 00 00 
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	fa                   	cli
   1:	c3                   	ret
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	cc                   	int3
   6:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   d:	00 00 00 00 
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[    3.238843] RSP: 0018:ffffb3bc400b3ee8 EFLAGS: 00000252
[    3.238877] RAX: ffff896b3edaa3a0 RBX: ffff896b01378000 RCX: 4000000000000000
[    3.238932] RDX: 0000000000000001 RSI: ffffffffb8695a7c RDI: 000000000003fdfc
[    3.238986] RBP: 0000000000000003 R08: 000000000003fdfc R09: 0000000000000001
[    3.239048] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
[    3.239103] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[    3.239160] default_idle_call (./include/linux/cpuidle.h:144 kernel/sched/idle.c:98) 
[    3.239189] do_idle (kernel/sched/idle.c:171 kernel/sched/idle.c:312) 
[    3.239223] cpu_startup_entry (kernel/sched/idle.c:409 (discriminator 1)) 
[    3.239249] start_secondary (arch/x86/kernel/smpboot.c:336) 


Finger prints:
skb_copy_and_csum_bits:icmp_glue_bits:__ip_append_data:ip_append_data