======================================
| [ 75.026836][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   75.027130][    C2]
| [   75.027241][    C2]
| [   75.027241][    C2] stack backtrace:
[   75.027872][    C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   75.028386][    C2] Call Trace:
[   75.028570][    C2]  <IRQ>
[ 75.028694][ C2] dump_stack_lvl (lib/dump_stack.c:117) 
[ 75.028937][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 75.029227][ C2] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 75.029620][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 75.029911][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 75.030133][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 75.030376][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 75.030766][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 75.031000][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 75.031229][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 75.031472][ C2] ? save_trace (kernel/locking/lockdep.c:586) 
[ 75.031856][ C2] mark_lock (kernel/locking/lockdep.c:4678) 
[ 75.032036][ C2] mark_usage (kernel/locking/lockdep.c:4567) 
[ 75.032210][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 75.032444][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 75.032683][ C2] ? ipv4_sk_update_pmtu (./include/net/ip.h:443 net/ipv4/route.c:1120) 
[ 75.033072][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 75.033300][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 75.033536][ C2] ? ipv4_sk_update_pmtu (./include/net/ip.h:443 net/ipv4/route.c:1120) 
[ 75.033769][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 75.034159][ C2] ? ipv4_sk_update_pmtu (./include/net/ip.h:443 net/ipv4/route.c:1120) 
[ 75.034390][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 75.034625][ C2] ? ipv4_sk_update_pmtu (./include/net/ip.h:443 net/ipv4/route.c:1120) 
[ 75.034863][ C2] ipv4_sk_update_pmtu (./include/net/ip.h:443 net/ipv4/route.c:1120) 
[ 75.035258][ C2] ? vxlan_err_lookup (drivers/net/vxlan/vxlan_core.c:1821) vxlan
[ 75.035514][ C2] ? __pfx_ipv4_sk_update_pmtu (net/ipv4/route.c:1110) 
[ 75.035746][ C2] ? __udp4_lib_err_encap (net/ipv4/udp.c:673 (discriminator 1)) 
[ 75.035983][ C2] __udp4_lib_err (net/ipv4/udp.c:751) 
[ 75.036218][ C2] icmp_unreach (net/ipv4/icmp.c:957) 
[ 75.036613][ C2] icmp_rcv (net/ipv4/icmp.c:1274) 
[ 75.036792][ C2] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) 
[ 75.037031][ C2] ip_local_deliver_finish (./include/linux/rcupdate.h:810 net/ipv4/ip_input.c:234) 
[ 75.037263][ C2] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) 
[ 75.037490][ C2] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) 
[ 75.037724][ C2] ? ip_rcv_finish_core.constprop.0 (./include/net/net_namespace.h:383 ./include/linux/netdevice.h:2574 net/ipv4/ip_input.c:372) 
[ 75.038013][ 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) 
[ 75.038191][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 75.038596][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 75.038847][ C2] ? process_backlog (./include/linux/rcupdate.h:329 ./include/linux/rcupdate.h:781 net/core/dev.c:6046) 
[ 75.039078][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) 
[ 75.039305][ C2] __netif_receive_skb_one_core (net/core/dev.c:5604 (discriminator 4)) 
[ 75.039745][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5597) 
[ 75.040031][ C2] ? process_backlog (./include/linux/rcupdate.h:329 ./include/linux/rcupdate.h:781 net/core/dev.c:6046) 
[ 75.040256][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 75.040496][ C2] ? process_backlog (./include/linux/rcupdate.h:329 ./include/linux/rcupdate.h:781 net/core/dev.c:6046) 
[ 75.040877][ C2] process_backlog (./include/linux/rcupdate.h:810 net/core/dev.c:6048) 
[ 75.041109][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 75.041338][ C2] __napi_poll.constprop.0 (net/core/dev.c:6701) 
[ 75.041567][ C2] net_rx_action (net/core/dev.c:6770 net/core/dev.c:6886) 
[ 75.041796][ C2] ? __pfx_net_rx_action (net/core/dev.c:6850) 
[ 75.042178][ C2] ? ktime_get (kernel/time/timekeeping.c:195 (discriminator 4) kernel/time/timekeeping.c:289 (discriminator 4) kernel/time/timekeeping.c:388 (discriminator 4) kernel/time/timekeeping.c:848 (discriminator 4)) 
[ 75.042352][ C2] ? hrtimer_interrupt (kernel/time/hrtimer.c:1831) 
[ 75.042583][ C2] ? hrtimer_interrupt (kernel/time/hrtimer.c:1831) 
[ 75.042814][ C2] __do_softirq (kernel/softirq.c:554) 
[ 75.043371][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:849 net/core/dev.c:4399) 
[ 75.043618][ C2] do_softirq (kernel/softirq.c:455 kernel/softirq.c:442) 
[   75.043800][    C2]  </IRQ>
[   75.043929][    C2]  <TASK>
[ 75.044047][ C2] __local_bh_enable_ip (kernel/softirq.c:382) 
[ 75.044277][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:849 net/core/dev.c:4399) 
[ 75.044510][ C2] __dev_queue_xmit (net/core/dev.c:4400) 
[ 75.044738][ C2] ? packet_parse_headers (./include/linux/skbuff.h:3028 net/packet/af_packet.c:1944) 
[ 75.044964][ C2] ? packet_parse_headers (./include/linux/skbuff.h:3028 net/packet/af_packet.c:1944) 
[ 75.045195][ C2] ? __pfx_sock_alloc_send_pskb (net/core/sock.c:2767) 
[ 75.045574][ C2] ? __pfx___dev_queue_xmit (net/core/dev.c:4281) 
[ 75.045802][ C2] ? dev_get_by_index (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 net/core/dev.c:888) 
[ 75.046028][ C2] packet_snd (net/packet/af_packet.c:3081) 
[ 75.046265][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 75.046639][ C2] ? __pfx_packet_snd (net/packet/af_packet.c:2944) 
[ 75.046862][ C2] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 75.047091][ C2] ? trace_raw_output_mmap_lock_acquire_returned (./include/trace/events/mmap_lock.h:52 (discriminator 2)) 
[ 75.047431][ C2] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 75.047811][ C2] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[ 75.048035][ C2] ? __pfx___sys_sendto (net/socket.c:2161) 
[ 75.048268][ C2] ? sock_ioctl (net/socket.c:1344) 
[ 75.048509][ C2] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2749 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3317 kernel/locking/rwsem.c:1347) 
[ 75.048913][ C2] ? __pfx___up_read (kernel/locking/rwsem.c:1339) 
[ 75.049152][ C2] ? do_user_addr_fault (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 ./include/linux/mm.h:702 arch/x86/mm/fault.c:1364) 
[ 75.049379][ C2] __x64_sys_sendto (net/socket.c:2199) 
[ 75.049603][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 75.050045][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 75.050276][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   75.050582][    C2] RIP: 0033:0x7f3517b4485a
[ 75.050820][ 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
[   75.051780][    C2] RSP: 002b:00007ffc606db818 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   75.052290][    C2] RAX: ffffffffffffffda RBX: 000000000ebaa9d0 RCX: 00007f3517b4485a
[   75.052629][    C2] RDX: 00000000000003c5 RSI: 000000000ebab022 RDI: 0000000000000005
[   75.052969][    C2] RBP: 000000000ebab022 R08: 00007ffc606db820 R09: 0000000000000014
[   75.053301][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage