[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.7' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 29.948723] netlink: 24 bytes leftover after parsing attributes in process `syz-executor125'. [ 29.964543] device veth1 entered promiscuous mode [ 29.979942] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 30.043884] kasan: CONFIG_KASAN_INLINE enabled [ 30.048565] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.079619] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 30.085890] Modules linked in: [ 30.089104] CPU: 0 PID: 8004 Comm: syz-executor125 Not tainted 4.14.241-syzkaller #0 [ 30.096967] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.106293] task: ffff88809552e200 task.stack: ffff888095e18000 [ 30.112332] RIP: 0010:vxlan_fdb_destroy+0xb4/0x1f0 [ 30.117234] RSP: 0018:ffff888095e1f150 EFLAGS: 00010a02 [ 30.122570] RAX: dffffc0000000000 RBX: ffff8880ab48ac80 RCX: 1ffff11012bc3e20 [ 30.129829] RDX: 1bd5a00000000040 RSI: ffff8880ab48ac80 RDI: ffff8880ab48ac88 [ 30.137085] RBP: 0000000000000000 R08: ffffffff8b9b6358 R09: 0000000000000000 [ 30.144332] R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000200 [ 30.151578] R13: 0000000000000000 R14: ffff888095e1f250 R15: ffff8880b1abe7c0 [ 30.158826] FS: 00007ff339afa700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 30.167203] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.173058] CR2: 0000562c2450c8f0 CR3: 00000000b3c67000 CR4: 00000000001406f0 [ 30.180307] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.187554] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.194816] Call Trace: [ 30.197385] __vxlan_dev_create+0x3b0/0x710 [ 30.201686] ? vxlan_fdb_add+0x2e0/0x2e0 [ 30.205721] ? vxlan_setup+0x460/0x460 [ 30.209584] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 30.214595] ? kmem_cache_alloc_node_trace+0x383/0x400 [ 30.219849] vxlan_newlink+0xa3/0xe0 [ 30.223537] ? __vxlan_dev_create+0x710/0x710 [ 30.228009] ? rtnl_create_link+0x129/0x890 [ 30.232332] rtnl_newlink+0xfab/0x1860 [ 30.236224] ? __lock_acquire+0x2190/0x3f20 [ 30.240525] ? __vxlan_dev_create+0x710/0x710 [ 30.245012] ? rtnl_dellink+0x6a0/0x6a0 [ 30.248964] ? trace_hardirqs_on+0x10/0x10 [ 30.253458] ? lock_acquire+0x170/0x3f0 [ 30.257425] ? lock_downgrade+0x740/0x740 [ 30.261561] ? rtnl_dellink+0x6a0/0x6a0 [ 30.265527] rtnetlink_rcv_msg+0x3be/0xb10 [ 30.269759] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 30.274324] ? __netlink_lookup+0x345/0x5d0 [ 30.278624] netlink_rcv_skb+0x125/0x390 [ 30.282675] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 30.287160] ? netlink_ack+0x9a0/0x9a0 [ 30.291124] netlink_unicast+0x437/0x610 [ 30.295162] ? netlink_sendskb+0xd0/0xd0 [ 30.299200] ? __check_object_size+0x179/0x230 [ 30.303769] netlink_sendmsg+0x62e/0xb80 [ 30.307818] ? nlmsg_notify+0x170/0x170 [ 30.311768] ? security_socket_sendmsg+0x83/0xb0 [ 30.316596] ? nlmsg_notify+0x170/0x170 [ 30.320584] sock_sendmsg+0xb5/0x100 [ 30.324276] sock_no_sendpage+0xe2/0x110 [ 30.328317] ? __sk_mem_schedule+0xd0/0xd0 [ 30.332558] ? __sk_mem_schedule+0xd0/0xd0 [ 30.336794] sock_sendpage+0xdf/0x140 [ 30.340583] pipe_to_sendpage+0x226/0x2d0 [ 30.344712] ? sockfs_setattr+0x140/0x140 [ 30.348848] ? direct_splice_actor+0x160/0x160 [ 30.353425] __splice_from_pipe+0x326/0x7a0 [ 30.357724] ? direct_splice_actor+0x160/0x160 [ 30.362292] generic_splice_sendpage+0xc1/0x110 [ 30.366940] ? vmsplice_to_user+0x1b0/0x1b0 [ 30.371240] ? rw_verify_area+0xe1/0x2a0 [ 30.375281] ? vmsplice_to_user+0x1b0/0x1b0 [ 30.379600] SyS_splice+0xd59/0x1380 [ 30.383303] ? _raw_spin_unlock_irq+0x24/0x80 [ 30.387806] ? compat_SyS_vmsplice+0x150/0x150 [ 30.392433] ? do_syscall_64+0x4c/0x640 [ 30.396484] ? compat_SyS_vmsplice+0x150/0x150 [ 30.401046] do_syscall_64+0x1d5/0x640 [ 30.404912] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.410514] RIP: 0033:0x444e09 [ 30.413683] RSP: 002b:00007ff339afa2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 30.421373] RAX: ffffffffffffffda RBX: 00000000004ca458 RCX: 0000000000444e09 [ 30.428622] RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004 [ 30.435866] RBP: 00000000004ca450 R08: 000000000004ffe2 R09: 0000000000000000 [ 30.443128] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca45c [ 30.450374] R13: 000000000049a004 R14: 0000006e616c7876 R15: 0000000000022000 [ 30.457636] Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 11 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 09 01 00 00 48 85 ed 49 89 2c 24 74 28 e8 14 [ 30.476701] RIP: vxlan_fdb_destroy+0xb4/0x1f0 RSP: ffff888095e1f150 [ 30.489194] ---[ end trace 62884d15c62a6551 ]--- [ 30.494032] Kernel panic - not syncing: Fatal exception [ 30.499435] Kernel Offset: disabled [ 30.503046] Rebooting in 86400 seconds..