[    2.533159] ip (228) used greatest stack depth: 12296 bytes left
[    2.675910] eth1: renamed from tmp
[    2.716895] eth2: renamed from tmp
[    2.752892] l2tp_core: L2TP core driver, V2.0
[    2.754358] l2tp_netlink: L2TP netlink interface
[    2.761644] l2tp_ip: L2TP IP encapsulation support (L2TPv3)
[    2.770767] l2tp_eth: L2TP ethernet pseudowire support (L2TPv3)
[    2.771032] BUG: kernel NULL pointer dereference, address: 0000000000000054
[    2.771080] #PF: supervisor read access in kernel mode
[    2.771111] #PF: error_code(0x0000) - not-present page
[    2.771139] PGD 76b1067 P4D 76ab067 PUD 76aa067 PMD 0 
[    2.771171] Oops: Oops: 0000 [#1] SMP
[    2.771199] CPU: 3 UID: 0 PID: 281 Comm: ip Not tainted 7.0.0-rc1-virtme #1 PREEMPT(lazy) 
[    2.771246] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.771279] RIP: 0010:l2tp_eth_create+0xf2/0x300 [l2tp_eth]
[    2.771313] Code: 00 00 ff ff 00 00 48 89 85 18 02 00 00 41 8b 74 24 3c 85 f6 0f 84 a2 00 00 00 48 8b 53 20 0f b7 43 4a 4d 8b ac 24 b8 00 00 00 <8b> 4a 54 03 42 3c 31 d2 85 c9 0f 94 c2 44 8d 74 d0 0e e8 37 31 00
[    2.771404] RSP: 0018:ff3e6869002e38f8 EFLAGS: 00010206
[    2.771432] RAX: 0000000000000008 RBX: ff171e85c1996e00 RCX: 0000000000000005
[    2.771471] RDX: 0000000000000000 RSI: 0000000000000014 RDI: 7f7f7fffffffffff
[    2.771512] RBP: ff171e85c19ae000 R08: 8080808080808080 R09: ff171e85c19ae120
[    2.771553] R10: ff3e6869002e3900 R11: fefefefefefefeff R12: ff171e85c4d8dc00
[    2.771597] R13: ff171e85c3090cc0 R14: 0000000000000411 R15: 0000000000000000
[    2.771650] FS:  00007f6f511fe400(0000) GS:ff171e867b934000(0000) knlGS:0000000000000000
[    2.771698] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.771732] CR2: 0000000000000054 CR3: 00000000050b6005 CR4: 0000000000771ef0
[    2.771772] PKRU: 55555554
[    2.771787] Call Trace:
[    2.771804]  <TASK>
[    2.771821]  l2tp_nl_cmd_session_create+0x204/0x470 [l2tp_netlink]
[    2.771861]  genl_family_rcv_msg_doit+0xf8/0x150
[    2.771896]  genl_rcv_msg+0x1a6/0x2a0
[    2.771923]  ? l2tp_session_notify.constprop.0+0xa0/0xa0 [l2tp_netlink]
[    2.771958]  ? genl_family_rcv_msg_dumpit+0x100/0x100
[    2.771986]  netlink_rcv_skb+0x59/0x100
[    2.772011]  genl_rcv+0x28/0x40
[    2.772037]  netlink_unicast+0x255/0x380
[    2.772059]  netlink_sendmsg+0x1cc/0x3e0
[    2.772081]  ____sys_sendmsg+0x164/0x260
[    2.772106]  ___sys_sendmsg+0x99/0xe0
[    2.772131]  __sys_sendmsg+0x8a/0xe0
[    2.772155]  do_syscall_64+0x101/0xfc0
[    2.772182]  ? exc_page_fault+0x6e/0x170
[    2.772205]  ? __sysvec_call_function+0x20/0xe0
[    2.772236]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.772264] RIP: 0033:0x7f6f51358c5e
[    2.772286] Code: 4d 89 d8 e8 34 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
[    2.772380] RSP: 002b:00007ffdb323d2f0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[    2.772429] RAX: ffffffffffffffda RBX: 00007ffdb323d6b0 RCX: 00007f6f51358c5e
[    2.772472] RDX: 0000000000000000 RSI: 00007ffdb323d3b0 RDI: 0000000000000006
[    2.772515] RBP: 00007ffdb323d300 R08: 0000000000000000 R09: 0000000000000000
[    2.772559] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001
[    2.772603] R13: 0000000069a2b6af R14: 000000000000000b R15: 00000000004a3d00
[    2.772641]  </TASK>
[    2.772656] Modules linked in: l2tp_eth l2tp_ip l2tp_netlink l2tp_core
[    2.772699] CR2: 0000000000000054
[    2.772720] ---[ end trace 0000000000000000 ]---
[    2.772747] RIP: 0010:l2tp_eth_create+0xf2/0x300 [l2tp_eth]
[    2.772779] Code: 00 00 ff ff 00 00 48 89 85 18 02 00 00 41 8b 74 24 3c 85 f6 0f 84 a2 00 00 00 48 8b 53 20 0f b7 43 4a 4d 8b ac 24 b8 00 00 00 <8b> 4a 54 03 42 3c 31 d2 85 c9 0f 94 c2 44 8d 74 d0 0e e8 37 31 00
[    2.772870] RSP: 0018:ff3e6869002e38f8 EFLAGS: 00010206
[    2.772904] RAX: 0000000000000008 RBX: ff171e85c1996e00 RCX: 0000000000000005
[    2.772946] RDX: 0000000000000000 RSI: 0000000000000014 RDI: 7f7f7fffffffffff
[    2.772983] RBP: ff171e85c19ae000 R08: 8080808080808080 R09: ff171e85c19ae120
[    2.773025] R10: ff3e6869002e3900 R11: fefefefefefefeff R12: ff171e85c4d8dc00
[    2.773068] R13: ff171e85c3090cc0 R14: 0000000000000411 R15: 0000000000000000
[    2.773117] FS:  00007f6f511fe400(0000) GS:ff171e867b934000(0000) knlGS:0000000000000000
[    2.773167] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.773203] CR2: 0000000000000054 CR3: 00000000050b6005 CR4: 0000000000771ef0
[    2.773253] PKRU: 55555554
[    2.773268] note: ip[281] exited with irqs disabled
[    2.773647] ip (281) used greatest stack depth: 12048 bytes left