[    2.198312] xdummy0: entered promiscuous mode
[    2.202383] BUG: kernel NULL pointer dereference, address: 0000000000000858
[    2.202423] #PF: supervisor read access in kernel mode
[    2.202454] #PF: error_code(0x0000) - not-present page
[    2.202480] PGD 18cf067 P4D 5948067 PUD 594c067 PMD 0 
[    2.202511] Oops: Oops: 0000 [#1] SMP
[    2.202535] CPU: 3 UID: 0 PID: 182 Comm: tap Not tainted 7.2.0-rc1-virtme #1 PREEMPT(lazy) 
[    2.202581] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.202621] RIP: 0010:macvlan_port_release_mac+0x23/0x220
[    2.202656] Code: 10 eb d9 0f 1f 40 00 0f 1f 44 00 00 48 81 ec 88 00 00 00 65 48 8b 05 4c a1 6b 01 48 89 84 24 80 00 00 00 48 8b 87 00 01 00 00 <f6> 80 58 08 00 00 01 74 24 48 8b 10 48 8b 92 58 04 00 00 8b 0a 0f
[    2.202755] RSP: 0018:ff822be0c104b7c0 EFLAGS: 00010286
[    2.202785] RAX: 0000000000000000 RBX: ff41b99a8591c000 RCX: 0000000000000000
[    2.202827] RDX: 0000000000000000 RSI: ff41b99a8591c818 RDI: ff41b99a81c2f000
[    2.202869] RBP: ff41b99a8591c818 R08: ff41b99abed9a338 R09: 0000000000000000
[    2.202911] R10: 000000008214f55e R11: 000000008214f55e R12: ff41b99a81c2f000
[    2.202952] R13: ff41b99a81effc00 R14: ff41b99a85889740 R15: 0000000000000003
[    2.202996] FS:  00007fa451ae2740(0000) GS:ff41b99b17bb7000(0000) knlGS:0000000000000000
[    2.203040] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.203078] CR2: 0000000000000858 CR3: 0000000003b3a005 CR4: 0000000000771ef0
[    2.203117] PKRU: 55555554
[    2.203132] Call Trace:
[    2.203145]  <TASK>
[    2.203160]  ? enable_work+0x3a/0x100
[    2.203186]  ? cancel_work_sync+0x62/0x70
[    2.203212]  macvlan_port_destroy+0xa1/0xb0
[    2.203238]  unregister_netdevice_many_notify+0x685/0xa30
[    2.203270]  rtnl_dellink+0x257/0x430
[    2.203293]  ? rtnl_dellinkprop+0x20/0x20
[    2.203317]  rtnetlink_rcv_msg+0x39f/0x460
[    2.203339]  ? rtnl_calcit.isra.0+0x160/0x160
[    2.203371]  netlink_rcv_skb+0xca/0x140
[    2.203399]  netlink_unicast+0x26b/0x3a0
[    2.203421]  netlink_sendmsg+0x1e2/0x430
[    2.203445]  __sys_sendto+0x188/0x210
[    2.203469]  ? __d_alloc+0x40/0x210
[    2.203494]  __x64_sys_sendto+0x24/0x30
[    2.203515]  do_syscall_64+0x104/0x520
[    2.203537]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.203568] RIP: 0033:0x7fa451b5454e
[    2.203593] Code: 4d 89 d8 e8 b4 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 03 ff ff ff 0f 1f 00 f3 0f 1e fa
[    2.203690] RSP: 002b:00007fff013ee840 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[    2.203736] RAX: ffffffffffffffda RBX: 0000000000000030 RCX: 00007fa451b5454e
[    2.203786] RDX: 0000000000000030 RSI: 00007fff013ee8a0 RDI: 0000000000000005
[    2.203833] RBP: 00007fff013ee850 R08: 0000000000000000 R09: 0000000000000000
[    2.203873] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000404360
[    2.203913] R13: 0000000000406160 R14: 0000000000000001 R15: 00007fa451ae1000
[    2.203953]  </TASK>
[    2.203966] Modules linked in:
[    2.203992] CR2: 0000000000000858
[    2.204012] ---[ end trace 0000000000000000 ]---
[    2.204041] RIP: 0010:macvlan_port_release_mac+0x23/0x220
[    2.204071] Code: 10 eb d9 0f 1f 40 00 0f 1f 44 00 00 48 81 ec 88 00 00 00 65 48 8b 05 4c a1 6b 01 48 89 84 24 80 00 00 00 48 8b 87 00 01 00 00 <f6> 80 58 08 00 00 01 74 24 48 8b 10 48 8b 92 58 04 00 00 8b 0a 0f
[    2.204167] RSP: 0018:ff822be0c104b7c0 EFLAGS: 00010286
[    2.204194] RAX: 0000000000000000 RBX: ff41b99a8591c000 RCX: 0000000000000000
[    2.204237] RDX: 0000000000000000 RSI: ff41b99a8591c818 RDI: ff41b99a81c2f000
[    2.204276] RBP: ff41b99a8591c818 R08: ff41b99abed9a338 R09: 0000000000000000
[    2.204314] R10: 000000008214f55e R11: 000000008214f55e R12: ff41b99a81c2f000
[    2.204358] R13: ff41b99a81effc00 R14: ff41b99a85889740 R15: 0000000000000003
[    2.204404] FS:  00007fa451ae2740(0000) GS:ff41b99b17bb7000(0000) knlGS:0000000000000000
[    2.204454] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.204487] CR2: 0000000000000858 CR3: 0000000003b3a005 CR4: 0000000000771ef0
[    2.204526] PKRU: 55555554
[    2.204539] note: tap[182] exited with irqs disabled
[    2.204612] tap (182) used greatest stack depth: 11752 bytes left

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