======================================
|
| [    2.429281] ------------[ cut here ]------------
| [    2.429332] kernel BUG at net/core/skbuff.c:3605!
| [    2.429377] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[    2.429448] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[    2.429512] RIP: 0010:skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[ 2.429552] 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
[    2.429648] RSP: 0018:ffff9bedc00e8a98 EFLAGS: 00010206
[    2.429679] RAX: 000000000000005a RBX: 0000000000000008 RCX: 0000000000000000
[    2.429723] RDX: 000000000000001c RSI: ffff8c404278bd08 RDI: 0000000000000000
[    2.429767] RBP: 000000000000005a R08: 0000000000000000 R09: ffff8c4042789b00
[    2.429812] R10: 0000000000000018 R11: 0000000000000076 R12: 0000000000aa85d5
[    2.429850] R13: ffff8c404278bd08 R14: 0000000000000008 R15: 000000000000001c
[    2.429890] FS:  00007f37cea1ef00(0000) GS:ffff8c407ec80000(0000) knlGS:0000000000000000
[    2.429934] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.429971] CR2: 00007f37cec7bd60 CR3: 000000000278e005 CR4: 0000000000770ef0
[    2.430011] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    2.430055] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    2.430094] PKRU: 55555554
[    2.430106] Call Trace:
[    2.430123]  <IRQ>
[    2.430142] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) 
[    2.430172] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) 
[    2.430197] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[    2.430229] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) 
[    2.430253] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[    2.430286] ? exc_invalid_op (arch/x86/kernel/traps.c:265) 
[    2.430313] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[    2.430345] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[    2.430374] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[    2.430405] ? skb_copy_and_csum_bits (net/core/skbuff.c:3540) 
[    2.430437] icmp_glue_bits (./include/linux/bitops.h:136 ./include/net/checksum.h:90 ./include/net/checksum.h:98 net/ipv4/icmp.c:357) 
[    2.430463] __ip_append_data (net/ipv4/ip_output.c:1166 (discriminator 1)) 
[    2.430491] ? __pfx_icmp_glue_bits (net/ipv4/icmp.c:349) 
[    2.430521] ? __pfx_icmp_glue_bits (net/ipv4/icmp.c:349) 
[    2.430552] ip_append_data (net/ipv4/ip_output.c:1368 net/ipv4/ip_output.c:1347) 
[    2.430579] icmp_push_reply (net/ipv4/icmp.c:370) 
[    2.430606] __icmp_send (./include/net/route.h:249 net/ipv4/icmp.c:772) 
[    2.430631] ? __udp4_lib_lookup (net/ipv4/udp.c:513) 
[    2.430662] ? __udp4_lib_rcv (net/ipv4/udp.c:2441 (discriminator 118)) 
[    2.430686] __udp4_lib_rcv (net/ipv4/udp.c:2441 (discriminator 118)) 
[    2.430706] ? load_balance (kernel/sched/fair.c:11296) 
[    2.430733] ? raw_local_deliver (net/ipv4/raw.c:199) 
[    2.430759] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 4)) 
[    2.430791] ip_local_deliver_finish (./include/linux/rcupdate.h:782 net/ipv4/ip_input.c:234) 
[    2.430822] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) 
[    2.430855] process_backlog (./include/linux/rcupdate.h:782 net/core/dev.c:6053) 
[    2.430878] __napi_poll (net/core/dev.c:6703) 
[    2.430905] net_rx_action (net/core/dev.c:6774 net/core/dev.c:6886) 
[    2.430928] __do_softirq (kernel/softirq.c:553) 
[    2.430957] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) 
[    2.430985]  </IRQ>
[    2.431002]  <TASK>
[    2.431015] __local_bh_enable_ip (kernel/softirq.c:381) 
[    2.431040] __dev_queue_xmit (net/core/dev.c:4400) 
[    2.431065] ? eth_header (net/ethernet/eth.c:85) 
[    2.431094] ip_finish_output2 (./include/net/neighbour.h:542 net/ipv4/ip_output.c:235) 
[    2.431119] ip_send_skb (./include/net/dst.h:450 net/ipv4/ip_output.c:129 net/ipv4/ip_output.c:1496) 
[    2.431143] udp_send_skb (net/ipv4/udp.c:964) 
[    2.431170] udp_sendmsg (net/ipv4/udp.c:1250) 
[    2.431193] ? __pfx_ip_generic_getfrag (net/ipv4/ip_output.c:935) 
[    2.431225] ? rt_set_nexthop.constprop.0 (net/ipv4/route.c:1606) 
[    2.431259] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[    2.431286] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[    2.431313] ? __sys_connect (net/socket.c:2048 net/socket.c:2065) 
[    2.431339] __x64_sys_sendto (net/socket.c:2203 net/socket.c:2199 net/socket.c:2199) 
[    2.431363] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[    2.431390] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[    2.431425] RIP: 0033:0x7f37cec57700
[ 2.431447] Code: ff ff 64 89 02 eb bd 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20
All code
========
   0:	ff                   	(bad)
   1:	ff 64 89 02          	jmp    *0x2(%rcx,%rcx,4)
   5:	eb bd                	jmp    0xffffffffffffffc4
   7:	0f 1f 00             	nopl   (%rax)
   a:	f3 0f 1e fa          	endbr64
   e:	41 89 ca             	mov    %ecx,%r10d
  11:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  18:	00 
  19:	85 c0                	test   %eax,%eax
  1b:	75 1d                	jne    0x3a
  1d:	45 31 c9             	xor    %r9d,%r9d
  20:	45 31 c0             	xor    %r8d,%r8d
  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 68                	ja     0x9a
  32:	c3                   	ret
  33:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  3a:	41 54                	push   %r12
  3c:	48 83 ec 20          	sub    $0x20,%rsp

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 68                	ja     0x70
   8:	c3                   	ret
   9:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  10:	41 54                	push   %r12
  12:	48 83 ec 20          	sub    $0x20,%rsp
[    2.431543] RSP: 002b:00007ffc1fbc1d58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[    2.431587] RAX: ffffffffffffffda RBX: 000000000000005a RCX: 00007f37cec57700
[    2.431627] RDX: 000000000000005a RSI: 00007ffc1fbc20e0 RDI: 0000000000000008
[    2.431666] RBP: 00000000234234b2 R08: 0000000000000000 R09: 0000000000000000
[    2.431705] R10: 0000000000004000 R11: 0000000000000246 R12: 00007ffc1fbc1e50


Finger prints:
skb_copy_and_csum_bits:icmp_glue_bits:__ip_append_data:ip_append_data