======================================
| [   11.564881][    C0]  #4: ffffffffb237dd40 (rcu_read_lock){....}-{1:3}, at: ip_local_deliver_finish (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:840 (discriminator 2) net/ipv4/ip_input.c:240 (discriminator 2))
| [   11.565191][    C0]  #5: ff1100000bba2f68 (&vxlan->hash_lock){+.-.}-{3:3}, at: vxlan_snoop (./include/linux/spinlock.h:342 drivers/net/vxlan/vxlan_core.c:1487) vxlan
| [   11.565508][    C0]
| [   11.565508][    C0] stack backtrace:
[   11.565718][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.565720][    C0] Call Trace:
[   11.565721][    C0]  <IRQ>
[   11.565723][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.565728][    C0]  lockdep_rcu_suspicious.cold (kernel/locking/lockdep.c:6876)
[   11.565733][    C0] vxlan_fdb_create (drivers/net/vxlan/vxlan_core.c:872 (discriminator 8)) vxlan
[   11.565738][    C0]  ? vxlan_find_mac_rcu (./include/linux/rhashtable.h:648 (discriminator 8) ./include/linux/rhashtable.h:673 (discriminator 8) drivers/net/vxlan/vxlan_core.c:396 (discriminator 8)) vxlan
[   11.565744][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   11.565748][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   11.565750][    C0]  ? vxlan_open (drivers/net/vxlan/vxlan_core.c:3030) vxlan
[   11.565754][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   11.565759][    C0] vxlan_fdb_update (drivers/net/vxlan/vxlan_core.c:1095 drivers/net/vxlan/vxlan_core.c:1138) vxlan
[   11.565765][    C0]  ? vxlan_fdb_create (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) vxlan
[   11.565769][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   11.565771][    C0]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116)
[   11.565775][    C0] vxlan_snoop (drivers/net/vxlan/vxlan_core.c:1491) vxlan
[   11.565781][    C0]  ? __iptunnel_pull_header (net/ipv4/ip_tunnel_core.c:136)
[   11.565785][    C0] vxlan_rcv (drivers/net/vxlan/vxlan_core.c:1634 (discriminator 1) drivers/net/vxlan/vxlan_core.c:1772 (discriminator 1)) vxlan
[   11.565790][    C0]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   11.565795][    C0]  ? encap_bypass_if_local (drivers/net/vxlan/vxlan_core.c:2353) vxlan
[   11.565800][    C0]  ? udp4_lib_lookup2 (net/ipv4/udp.c:488)
[   11.565803][    C0]  ? udp_lib_lport_inuse2 (net/ipv4/udp.c:179 (discriminator 1))
[   11.565807][    C0]  ? __udp4_lib_lookup (net/ipv4/udp.c:714)
[   11.565810][    C0]  ? encap_bypass_if_local (drivers/net/vxlan/vxlan_core.c:2353) vxlan
[   11.565814][    C0]  ? udp_queue_rcv_one_skb (net/ipv4/udp.c:2389)
[   11.565815][    C0]  udp_queue_rcv_one_skb (net/ipv4/udp.c:2389)
[   11.565817][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   11.565818][    C0]  ? perf_trace_lock_acquire (./include/trace/stages/stage5_get_offsets.h:16 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23)
[   11.565822][    C0]  udp_unicast_rcv_skb (net/ipv4/udp.c:2577)
[   11.565825][    C0]  ? udp_rcv (net/ipv4/udp.c:742 (discriminator 3) net/ipv4/udp.c:2652 (discriminator 3))
[   11.565826][    C0]  udp_rcv (net/ipv4/udp.c:2654)
[   11.565831][    C0]  ? udp_sk_rx_dst_set (net/ipv4/udp.c:2452 (discriminator 1))
[   11.565834][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   11.565836][    C0]  ? ip_local_deliver_finish (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:840 (discriminator 2) net/ipv4/ip_input.c:240 (discriminator 2))
[   11.565840][    C0]  ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207)
[   11.565843][    C0]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6673 (discriminator 2))
[   11.565845][    C0]  ip_local_deliver_finish (net/ipv4/ip_input.c:241 (discriminator 1))
[   11.565848][    C0]  ip_local_deliver (./include/linux/netfilter.h:325 ./include/linux/netfilter.h:319 net/ipv4/ip_input.c:262)
[   11.565850][    C0]  ? ip_local_deliver_finish (net/ipv4/ip_input.c:232 (discriminator 42))
[   11.565852][    C0]  ? ip_rcv_finish_core (./include/linux/skbuff.h:1162 (discriminator 2) ./include/net/route.h:88 (discriminator 2) net/ipv4/ip_input.c:435 (discriminator 2))
[   11.565854][    C0]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   11.565860][    C0]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6673 (discriminator 2))
[   11.565862][    C0]  ip_rcv (./include/linux/netfilter.h:325 ./include/linux/netfilter.h:319 net/ipv4/ip_input.c:612)
[   11.565864][    C0]  ? ip_local_deliver (./include/linux/rcupdate.h:869 (discriminator 3))
[   11.565868][    C0]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   11.565870][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   11.565872][    C0]  ? netdev_upper_dev_unlink (net/core/dev.c:9062)
[   11.565875][    C0]  __netif_receive_skb_one_core (net/core/dev.c:6234)
[   11.565877][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   11.565880][    C0]  ? __netif_receive_skb_list_core (net/core/dev.c:6280 (discriminator 2))
[   11.565882][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   11.565887][    C0]  process_backlog (net/core/dev.c:6675)
[   11.565892][    C0]  __napi_poll (net/core/dev.c:7734)
[   11.565895][    C0]  net_rx_action (net/core/dev.c:7797 net/core/dev.c:7954)
[   11.565900][    C0]  ? __napi_poll (./include/net/gro.h:507)
[   11.565904][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   11.565910][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[   11.565913][    C0]  ? note_gp_changes (kernel/rcu/tree.c:1334 (discriminator 31))
[   11.565915][    C0]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   11.565919][    C0]  handle_softirqs (kernel/softirq.c:622)
[   11.565924][    C0]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   11.565928][    C0]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   11.565930][    C0]  irq_exit_rcu (kernel/softirq.c:752)
[   11.565932][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   11.565935][    C0]  </IRQ>
[   11.565936][    C0]  <TASK>
[   11.565936][    C0]  ? handle_mm_fault (mm/memory.c:6686)
[   11.565939][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   11.565941][    C0] RIP: 0010:lock_acquire.part.0 (./arch/x86/include/asm/irqflags.h:158 (discriminator 1) kernel/locking/lockdep.c:5871 (discriminator 1))
[   11.565944][    C0] Code: ff 65 0f c1 05 17 53 37 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 e9 0d 37 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 17 53 37 04 83 	roll   $0x83,0x4375317(%rip)        # 0x4375321
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 e9 0d 37 	sub    %gs:0x4370de9(%rip),%rax        # 0x4370e20
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 e9 0d 37 	sub    %gs:0x4370de9(%rip),%rax        # 0x4370df6
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
[   11.565945][    C0] RSP: 0000:ffa0000001b9fab0 EFLAGS: 00000206
[   11.565947][    C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: 5755d8304f01a0f6
[   11.565949][    C0] RDX: 0000000000000001 RSI: ffffffffb1e01084 RDI: ffffffffb187a960
[   11.565949][    C0] RBP: 0000000000000001 R08: 0000000000000001 R09: ff110000050aaed0
[   11.565950][    C0] R10: 0000000000000200 R11: 0000000000000001 R12: ff1100002e83bea0
[   11.565951][    C0] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
[   11.565957][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   11.565959][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[   11.565962][    C0]  kmem_cache_alloc_noprof (./include/linux/local_lock_internal.h:53 (discriminator 2) mm/slub.c:4795 (discriminator 2) mm/slub.c:4933 (discriminator 2) mm/slub.c:4959 (discriminator 2))
[   11.565964][    C0]  ? kmem_cache_alloc_noprof (./include/linux/local_lock_internal.h:53 (discriminator 2) mm/slub.c:4795 (discriminator 2) mm/slub.c:4933 (discriminator 2) mm/slub.c:4959 (discriminator 2))
[   11.565966][    C0]  ? __alloc_object (mm/kmemleak.c:494 (discriminator 1) mm/kmemleak.c:676 (discriminator 1))
[   11.565971][    C0]  __alloc_object (mm/kmemleak.c:494 (discriminator 1) mm/kmemleak.c:676 (discriminator 1))
[   11.565973][    C0]  __create_object (mm/kmemleak.c:790)
[   11.565975][    C0]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.565978][    C0]  kmem_cache_alloc_noprof (./include/linux/kmemleak.h:44 mm/slub.c:4625 mm/slub.c:4945 mm/slub.c:4959)
[   11.565980][    C0]  ? __anon_vma_prepare (mm/rmap.c:142 (discriminator 7) mm/rmap.c:194 (discriminator 7))
[   11.565985][    C0]  __anon_vma_prepare (mm/rmap.c:142 (discriminator 7) mm/rmap.c:194 (discriminator 7))
[   11.565988][    C0]  __vmf_anon_prepare (mm/memory.c:3829)
[   11.565991][    C0]  do_pte_missing (mm/internal.h:494 mm/memory.c:5880 mm/memory.c:5996 mm/memory.c:4566)
[   11.565993][    C0]  ? rcu_read_unlock (./include/linux/rcupdate.h:869 (discriminator 5))
[   11.565996][    C0]  ? rcu_read_unlock (./include/linux/rcupdate.h:869 (discriminator 6))
[   11.565998][    C0]  __handle_mm_fault (mm/memory.c:6379 mm/memory.c:6517)
[   11.566000][    C0]  ? __pmd_alloc (./include/linux/mm.h:1726)
[   11.566002][    C0]  ? lock_vma_under_rcu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:871 (discriminator 2) mm/mmap_lock.c:329 (discriminator 2))
[   11.566004][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5574)
[   11.566012][    C0]  handle_mm_fault (mm/memory.c:6686)
[   11.566014][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   11.566017][    C0]  do_user_addr_fault (arch/x86/mm/fault.c:1343)
[   11.566022][    C0]  ? irqentry_enter (./include/linux/irq-entry-common.h:108 ./include/linux/irq-entry-common.h:293 kernel/entry/common.c:116)
[   11.566024][    C0]  exc_page_fault (arch/x86/mm/fault.c:1483 arch/x86/mm/fault.c:1536)
[   11.566026][    C0]  asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:595)
[   11.566028][    C0] RIP: 0033:0x7fb6937fb76a
[   11.566030][    C0] Code: 0f 61 c0 66 0f 70 c0 00 48 83 fa 10 0f 82 7e 00 00 00 48 83 fa 20 77 12 0f 11 44 17 f0 0f 11 07 c3 0f 11 47 e0 0f 11 47 f0 c3 <0f> 11 07 0f 11 47 10 48 01 d7 48 83 fa 40 76 e7 0f 11 40 20 0f 11
All code
========
   0:	0f 61 c0             	punpcklwd %mm0,%mm0
   3:	66 0f 70 c0 00       	pshufd $0x0,%xmm0,%xmm0
   8:	48 83 fa 10          	cmp    $0x10,%rdx
   c:	0f 82 7e 00 00 00    	jb     0x90
  12:	48 83 fa 20          	cmp    $0x20,%rdx
  16:	77 12                	ja     0x2a
  18:	0f 11 44 17 f0       	movups %xmm0,-0x10(%rdi,%rdx,1)
  1d:	0f 11 07             	movups %xmm0,(%rdi)
  20:	c3                   	ret
  21:	0f 11 47 e0          	movups %xmm0,-0x20(%rdi)
  25:	0f 11 47 f0          	movups %xmm0,-0x10(%rdi)
  29:	c3                   	ret
  2a:*	0f 11 07             	movups %xmm0,(%rdi)		<-- trapping instruction
  2d:	0f 11 47 10          	movups %xmm0,0x10(%rdi)
  31:	48 01 d7             	add    %rdx,%rdi
  34:	48 83 fa 40          	cmp    $0x40,%rdx
  38:	76 e7                	jbe    0x21
  3a:	0f 11 40 20          	movups %xmm0,0x20(%rax)
  3e:	0f                   	.byte 0xf
  3f:	11                   	.byte 0x11

Code starting with the faulting instruction
===========================================
   0:	0f 11 07             	movups %xmm0,(%rdi)
   3:	0f 11 47 10          	movups %xmm0,0x10(%rdi)
   7:	48 01 d7             	add    %rdx,%rdi
   a:	48 83 fa 40          	cmp    $0x40,%rdx
   e:	76 e7                	jbe    0xfffffffffffffff7
  10:	0f 11 40 20          	movups %xmm0,0x20(%rax)
  14:	0f                   	.byte 0xf
  15:	11                   	.byte 0x11
[   11.566031][    C0] RSP: 002b:00007ffd49d2bba8 EFLAGS: 00010206
[   11.566033][    C0] RAX: 00007fb6937c5058 RBX: 00007fb6937cc810 RCX: 00007fb6937c5058
[   11.566033][    C0] RDX: 0000000000000fa8 RSI: 0000000000000000 RDI: 00007fb6937c5058
[   11.566034][    C0] RBP: 00007ffd49d2bfb0 R08: 00007fb6937c6000 R09: 0000000000000003
[   11.566035][    C0] R10: 00007fb6937c6000 R11: 0000000000000206 R12: 0000000000000003


Finger prints:
vxlan_fdb_create:vxlan_fdb_update:vxlan_snoop:vxlan_rcv:udp_queue_rcv_one_skb