[ 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 '10.128.0.32' (ECDSA) to the list of known hosts. syzkaller login: [ 56.239141] IPVS: ftp: loaded support on port[0] = 21 [ 57.067672] chnl_net:caif_netlink_parms(): no params data found [ 57.136544] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.143571] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.151436] device bridge_slave_0 entered promiscuous mode [ 57.159365] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.165778] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.173741] device bridge_slave_1 entered promiscuous mode [ 57.194586] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 57.203921] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 57.222975] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 57.230225] team0: Port device team_slave_0 added [ 57.235746] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 57.243820] team0: Port device team_slave_1 added [ 57.259417] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 57.265659] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 57.291574] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 57.303962] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 57.311324] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 57.337491] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 57.349006] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 57.356468] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 57.410886] device hsr_slave_0 entered promiscuous mode [ 57.448238] device hsr_slave_1 entered promiscuous mode [ 57.488605] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 57.495829] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 57.563109] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.569647] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.576441] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.582846] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.611834] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 57.618736] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.626686] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 57.636068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.655769] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.663161] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.673445] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 57.680156] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.688839] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.696441] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.702846] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.712040] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.720154] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.726488] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.748571] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.756365] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.765310] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.773226] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.781222] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.788977] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 57.794980] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.809108] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 57.816334] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.823615] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.834441] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.886158] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 57.895639] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 57.924265] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 57.932105] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 57.939024] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 57.947949] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.955313] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 57.962630] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 57.971387] device veth0_vlan entered promiscuous mode [ 57.980504] device veth1_vlan entered promiscuous mode [ 57.986311] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 57.996171] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 58.007706] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 58.017667] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 58.025358] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 58.033344] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 58.042709] device veth0_macvtap entered promiscuous mode [ 58.049479] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 58.057442] device veth1_macvtap entered promiscuous mode [ 58.065850] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 58.074142] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 58.083766] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 58.093111] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 58.102531] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 58.110138] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 58.116877] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 58.125042] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 58.135504] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 58.142635] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 58.149391] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 58.157076] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 59.041230] 8021q: VLANs not supported on hsr0 [ 59.046062] 8021q: VLANs not supported on hsr0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 60.611420] BUG: looking up invalid subclass: 8 [ 60.616100] turning off the locking correctness validator. [ 60.621715] CPU: 1 PID: 7403 Comm: syz-executor679 Not tainted 4.14.175-syzkaller #0 [ 60.629750] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.639087] Call Trace: [ 60.641680] dump_stack+0x13e/0x194 [ 60.645736] register_lock_class+0x4cf/0x1600 [ 60.650223] ? __dev_alloc_name+0x24c/0x2b0 [ 60.654526] ? check_noncircular+0x20/0x20 [ 60.658762] __lockdep_init_map+0x2a7/0x560 [ 60.663190] vlan_dev_init+0x78a/0xc00 [ 60.667067] ? vlan_dev_open+0x820/0x820 [ 60.671126] register_netdevice+0x286/0xc70 [ 60.675439] ? netdev_change_features+0x80/0x80 [ 60.680096] ? dev_get_nest_level+0x10c/0x160 [ 60.684578] register_vlan_dev+0x28d/0x6a0 [ 60.688821] vlan_newlink+0x3b9/0x510 [ 60.692606] rtnl_newlink+0xecb/0x1720 [ 60.696485] ? vlan_changelink+0x440/0x440 [ 60.700705] ? trace_hardirqs_on+0x10/0x10 [ 60.704919] ? rtnl_link_unregister+0x1f0/0x1f0 [ 60.709567] ? lock_acquire+0x170/0x3f0 [ 60.713546] ? lock_acquire+0x170/0x3f0 [ 60.717588] ? rtnetlink_rcv_msg+0x31d/0xb10 [ 60.722009] ? __lock_is_held+0xad/0x140 [ 60.726047] ? lock_downgrade+0x6e0/0x6e0 [ 60.730178] ? rtnl_link_unregister+0x1f0/0x1f0 [ 60.734824] rtnetlink_rcv_msg+0x3be/0xb10 [ 60.739035] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 60.743693] ? netdev_pick_tx+0x2e0/0x2e0 [ 60.747822] ? skb_clone+0x11c/0x310 [ 60.751528] ? save_trace+0x290/0x290 [ 60.755306] netlink_rcv_skb+0x127/0x370 [ 60.759352] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 60.763919] ? netlink_ack+0x980/0x980 [ 60.767966] netlink_unicast+0x437/0x620 [ 60.772023] ? netlink_attachskb+0x600/0x600 [ 60.776422] netlink_sendmsg+0x733/0xbe0 [ 60.780464] ? netlink_unicast+0x620/0x620 [ 60.784684] ? SYSC_sendto+0x2b0/0x2b0 [ 60.788565] ? security_socket_sendmsg+0x83/0xb0 [ 60.793320] ? netlink_unicast+0x620/0x620 [ 60.797549] sock_sendmsg+0xc5/0x100 [ 60.801254] ___sys_sendmsg+0x70a/0x840 [ 60.805233] ? trace_hardirqs_on+0x10/0x10 [ 60.809459] ? copy_msghdr_from_user+0x380/0x380 [ 60.814204] ? save_trace+0x290/0x290 [ 60.818159] ? find_held_lock+0x2d/0x110 [ 60.822201] ? lock_downgrade+0x6e0/0x6e0 [ 60.826326] ? __fget+0x228/0x360 [ 60.829758] ? __fget_light+0x199/0x1f0 [ 60.833729] ? sockfd_lookup_light+0xb2/0x160 [ 60.838217] __sys_sendmsg+0xa3/0x120 [ 60.841994] ? SyS_shutdown+0x160/0x160 [ 60.845947] ? up_read+0x17/0x30 [ 60.849306] ? __do_page_fault+0x35b/0xb40 [ 60.853527] SyS_sendmsg+0x27/0x40 [ 60.857075] ? __sys_sendmsg+0x120/0x120 [ 60.861121] do_syscall_64+0x1d5/0x640 [ 60.864991] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 60.870213] RIP: 0033:0x4494f9 [ 60.873382] RSP: 002b:00007fcfeda35d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.881068] RAX: ffffffffffffffda RBX: 00000000006dec48 RCX: 00000000004494f9 [ 60.888346] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000004 [ 60.895601] RBP: 00000000006dec40 R08: 0000000000000000 R09: 0000000000000000 [ 60.902854] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec4c [ 60.910190] R13: 0000000000000000 R14: 0000000000000000 R15: 0565001000000050 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.957658] Dead loop on virtual device veth0_vlan, fix it urgently! [ 61.964468] Dead loop on virtual device veth0_vlan, fix it urgently! [ 61.967626] Dead loop on virtual device veth1_vlan, fix it urgently! [ 61.977994] Dead loop on virtual device veth1_vlan, fix it urgently! [ 61.992279] Dead loop on virtual device veth1_vlan, fix it urgently! executing program executing program [ 62.028179] Dead loop on virtual device veth0_vlan, fix it urgently! [ 62.034980] Dead loop on virtual device veth0_vlan, fix it urgently! executing program executing program executing program executing program executing program executing program [ 62.138080] Dead loop on virtual device team0, fix it urgently! [ 62.157572] Dead loop on virtual device team0, fix it urgently! [ 62.167600] Dead loop on virtual device veth0, fix it urgently! executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 66.975544] net_ratelimit: 1400 callbacks suppressed [ 66.975547] Dead loop on virtual device veth0_to_bond, fix it urgently! [ 66.991561] Dead loop on virtual device veth0_to_team, fix it urgently! [ 66.998476] Dead loop on virtual device veth0_to_bridge, fix it urgently! [ 67.018151] Dead loop on virtual device vlan70, fix it urgently! [ 67.027183] Dead loop on virtual device vlan36, fix it urgently! [ 67.035816] Dead loop on virtual device vlan88, fix it urgently! [ 67.043109] Dead loop on virtual device vlan35, fix it urgently! [ 67.048076] Dead loop on virtual device vlan68, fix it urgently! [ 67.049495] Dead loop on virtual device veth0_to_hsr, fix it urgently! [ 67.062549] Dead loop on virtual device vlan118, fix it urgently! executing program executing program executing program executing program executing program executing program executing program executing program executing program