======================================
| [   23.328435][  T341] ------------[ cut here ]------------
| [   23.328668][  T341] DEBUG_LOCKS_WARN_ON(1)
| [   23.328684][  T341] WARNING: CPU: 2 PID: 341 at kernel/locking/lockdep.c:4976 lockdep_init_map_type (kernel/locking/lockdep.c:4976 (discriminator 7))
| [   23.329236][  T341] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth
[   23.330020][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   23.330275][  T341] RIP: 0010:lockdep_init_map_type (kernel/locking/lockdep.c:4976 (discriminator 7))
[   23.330542][  T341] Code: ff 4c 89 e6 48 c7 c7 28 3d 5d af e8 ee c9 01 00 e9 3d ff ff ff 90 48 c7 c6 ee ff 56 af 48 c7 c7 3b fc 56 af e8 c5 89 e9 ff 90 <0f> 0b 90 90 e9 47 ff ff ff 90 48 c7 c6 2a 01 57 af 48 c7 c7 3b fc
All code
========
   0:	ff 4c 89 e6          	decl   -0x1a(%rcx,%rcx,4)
   4:	48 c7 c7 28 3d 5d af 	mov    $0xffffffffaf5d3d28,%rdi
   b:	e8 ee c9 01 00       	call   0x1c9fe
  10:	e9 3d ff ff ff       	jmp    0xffffffffffffff52
  15:	90                   	nop
  16:	48 c7 c6 ee ff 56 af 	mov    $0xffffffffaf56ffee,%rsi
  1d:	48 c7 c7 3b fc 56 af 	mov    $0xffffffffaf56fc3b,%rdi
  24:	e8 c5 89 e9 ff       	call   0xffffffffffe989ee
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	e9 47 ff ff ff       	jmp    0xffffffffffffff7a
  33:	90                   	nop
  34:	48 c7 c6 2a 01 57 af 	mov    $0xffffffffaf57012a,%rsi
  3b:	48                   	rex.W
  3c:	c7                   	.byte 0xc7
  3d:	c7                   	(bad)
  3e:	3b fc                	cmp    %esp,%edi

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	e9 47 ff ff ff       	jmp    0xffffffffffffff50
   9:	90                   	nop
   a:	48 c7 c6 2a 01 57 af 	mov    $0xffffffffaf57012a,%rsi
  11:	48                   	rex.W
  12:	c7                   	.byte 0xc7
  13:	c7                   	(bad)
  14:	3b fc                	cmp    %esp,%edi
[   23.331230][  T341] RSP: 0018:ffffc90000597018 EFLAGS: 00010282
[   23.332955][  T341] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   23.333422][  T341] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001
[   23.333875][  T341] RBP: ffffe8ffffc05070 R08: 0000000000000000 R09: fffffbfff5f3e10c
[   23.334341][  T341] R10: 0000000000000003 R11: 0000000000000004 R12: ffff8880106a2e60
[   23.334966][  T341] R13: 0000000000000000 R14: ffffe8ffffc04e58 R15: ffffe8ffffc04e00
[   23.335713][  T341] FS:  00007f5739664800(0000) GS:ffff8880854f2000(0000) knlGS:0000000000000000
[   23.336481][  T341] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.337113][  T341] CR2: 00007f2b4e0b7000 CR3: 000000000e52c001 CR4: 0000000000772ef0
[   23.337867][  T341] PKRU: 55555554
[   23.338230][  T341] Call Trace:
[   23.338507][  T341]  <TASK>
[   23.338690][  T341]  gro_cells_init (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-atomic.h:28 net/core/gro_cells.c:93 net/core/gro_cells.c:78)
[   23.339021][  T341] vxlan_init (drivers/net/vxlan/vxlan_core.c:2899) vxlan
[   23.339384][  T341]  ? kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:69 mm/kasan/common.c:78)
[   23.339721][  T341]  register_netdevice (net/core/dev.c:11309)
[   23.340046][  T341]  ? vxlan_vni_in_use (drivers/net/vxlan/vxlan_core.c:3680) vxlan
[   23.340414][  T341]  ? unregister_netdevice_queue (net/core/dev.c:11272)
[   23.340813][  T341]  ? vxlan_config_validate (drivers/net/vxlan/vxlan_core.c:3848) vxlan
[   23.341233][  T341]  ? vxlan_config_apply (drivers/net/vxlan/vxlan_core.c:3885) vxlan
[   23.341633][  T341] __vxlan_dev_create (drivers/net/vxlan/vxlan_core.c:3948) vxlan
[   23.341920][  T341]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   23.342198][  T341]  ? vxlan_changelink (drivers/net/vxlan/vxlan_core.c:3934) vxlan
[   23.342502][  T341] vxlan_newlink (drivers/net/vxlan/vxlan_core.c:4370) vxlan
[   23.342787][  T341]  ? vxlan_dev_create (drivers/net/vxlan/vxlan_core.c:4370) vxlan
[   23.343084][  T341]  ? rtnl_create_link (net/core/rtnetlink.c:3657)
[   23.343373][  T341]  rtnl_newlink_create (net/core/rtnetlink.c:3843)
[   23.343650][  T341]  ? rtnl_create_link (net/core/rtnetlink.c:3806)
[   23.343977][  T341]  ? __dev_get_by_name (net/core/dev.c:865)
[   23.344323][  T341]  ? rtnl_dev_get (net/core/rtnetlink.c:3419)
[   23.344650][  T341]  ? rtnl_validate_mdb_entry_del_bulk (net/core/rtnetlink.c:3419)
[   23.345069][  T341]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   23.345414][  T341]  ? reacquire_held_locks (kernel/locking/lockdep.c:5385)
[   23.345738][  T341]  __rtnl_newlink (net/core/rtnetlink.c:3957)
[   23.346079][  T341]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   23.346430][  T341]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   23.346761][  T341]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   23.347091][  T341]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   23.347431][  T341]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   23.347696][  T341]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   23.347935][  T341]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   23.348150][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.348369][  T341]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   23.348576][  T341]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   23.348779][  T341]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   23.349001][  T341]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   23.349254][  T341]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[   23.349468][  T341]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   23.349671][  T341]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   23.349874][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.350088][  T341]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   23.350300][  T341]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   23.350505][  T341]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   23.350711][  T341]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   23.350920][  T341]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   23.351130][  T341]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   23.351388][  T341]  ? __copy_msghdr (net/socket.c:2556)
[   23.351595][  T341]  ___sys_sendmsg (net/socket.c:2686)
[   23.351800][  T341]  ? copy_msghdr_from_user (net/socket.c:2673)
[   23.352015][  T341]  ? do_pte_missing (mm/memory.c:6134)
[   23.352228][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   23.352525][  T341]  ? __handle_mm_fault (mm/memory.c:6318)
[   23.352800][  T341]  ? __pmd_alloc (mm/memory.c:6229)
[   23.353082][  T341]  ? lock_vma_under_rcu (mm/mmap_lock.c:226)
[   23.353364][  T341]  ? lock_vma_under_rcu (mm/mmap_lock.c:259)
[   23.353638][  T341]  __sys_sendmsg (net/socket.c:2716)
[   23.353913][  T341]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   23.354133][  T341]  ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532)
[   23.354442][  T341]  ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:143 ./include/linux/mmap_lock.h:182 arch/x86/mm/fault.c:1338)
[   23.354790][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   23.355126][  T341]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   23.355459][  T341]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   23.355870][  T341] RIP: 0033:0x7f57398321d7
[   23.356218][  T341] Code: Unable to access opcode bytes at 0x7f57398321ad.

Code starting with the faulting instruction
===========================================
[   23.356646][  T341] RSP: 002b:00007fff9c19c668 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   23.357149][  T341] RAX: ffffffffffffffda RBX: 00007fff9c19cd90 RCX: 00007f57398321d7
[   23.357651][  T341] RDX: 0000000000000000 RSI: 00007fff9c19c6d0 RDI: 0000000000000005
[   23.358107][  T341] RBP: 000000000000000d R08: 000000000000008c R09: 0000000000000000
[   23.358524][  T341] R10: 00007f5739729770 R11: 0000000000000246 R12: 00007fff9c19cdb0


Finger prints:
lockdep_init_map_type:gro_cells_init:vxlan_init:register_netdevice:__vxlan_dev_create