Warning: Permanently added '10.128.1.38' (ECDSA) to the list of known hosts. syzkaller login: [ 38.271121] IPVS: ftp: loaded support on port[0] = 21 [ 39.115838] chnl_net:caif_netlink_parms(): no params data found [ 39.171514] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.178144] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.185597] device bridge_slave_0 entered promiscuous mode [ 39.193128] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.199736] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.206603] device bridge_slave_1 entered promiscuous mode [ 39.223730] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.232588] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.250912] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 39.258060] team0: Port device team_slave_0 added [ 39.264089] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 39.271587] team0: Port device team_slave_1 added [ 39.286382] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 39.292693] 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. [ 39.318283] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 39.329734] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 39.335977] 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. [ 39.361329] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 39.372099] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.379454] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.432452] device hsr_slave_0 entered promiscuous mode [ 39.489861] device hsr_slave_1 entered promiscuous mode [ 39.530209] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 39.537231] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.602232] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.608792] bridge0: port 2(bridge_slave_1) entered forwarding state [ 39.616124] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.622560] bridge0: port 1(bridge_slave_0) entered forwarding state [ 39.652997] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 39.659291] 8021q: adding VLAN 0 to HW filter on device bond0 [ 39.668877] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 39.678555] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 39.697519] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.704694] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.716680] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 39.723071] 8021q: adding VLAN 0 to HW filter on device team0 [ 39.731833] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 39.739424] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.745853] bridge0: port 1(bridge_slave_0) entered forwarding state [ 39.755071] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 39.763549] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.769942] bridge0: port 2(bridge_slave_1) entered forwarding state [ 39.790862] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 39.798572] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 39.806544] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 39.814107] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 39.822304] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 39.832093] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 39.838315] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 39.851282] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 39.858453] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 39.865252] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 39.876078] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 39.929965] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 39.940265] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 39.968037] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 39.975207] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 39.981721] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 39.991811] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 40.000869] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 40.007765] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 40.016556] device veth0_vlan entered promiscuous mode [ 40.026063] device veth1_vlan entered promiscuous mode [ 40.032811] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 40.042292] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 40.053839] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 40.063086] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 40.071383] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 40.078798] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 40.088498] device veth0_macvtap entered promiscuous mode [ 40.094911] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 40.104882] device veth1_macvtap entered promiscuous mode [ 40.111898] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 40.118918] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 40.129251] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 40.140098] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 40.149116] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 40.158296] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 40.165901] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 40.174357] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 40.184476] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 40.192135] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 40.199092] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 40.207527] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 40.320005] BUG: spinlock recursion on CPU#0, syz-executor615/6331 [ 40.326341] lock: 0xffff888097400a28, .magic: dead4ead, .owner: syz-executor615/6331, .owner_cpu: 0 [ 40.335676] CPU: 0 PID: 6331 Comm: syz-executor615 Not tainted 4.14.176-syzkaller #0 [ 40.343555] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.352891] Call Trace: [ 40.355507] dump_stack+0x13e/0x194 [ 40.359118] do_raw_spin_lock+0x1cd/0x230 [ 40.363258] dev_mc_sync+0x10b/0x1c0 [ 40.366951] ? vlan_dev_set_mac_address+0x5c0/0x5c0 [ 40.371955] vlan_dev_set_rx_mode+0x38/0x80 [ 40.376259] __dev_set_rx_mode+0x191/0x2a0 [ 40.380487] dev_uc_unsync+0x16c/0x1c0 [ 40.384355] bond_hw_addr_flush+0x5c/0xe0 [ 40.388488] ? bond_set_dev_addr.isra.0+0xb0/0xb0 [ 40.393307] bond_enslave+0x1e53/0x49e0 [ 40.397436] ? bond_update_slave_arr+0x6c0/0x6c0 [ 40.402172] ? rtmsg_ifinfo_event.part.0+0x9a/0xc0 [ 40.407101] ? rtmsg_ifinfo+0x64/0x80 [ 40.410897] ? __dev_notify_flags+0x110/0x210 [ 40.415374] ? dev_change_name+0x990/0x990 [ 40.419610] ? bond_update_slave_arr+0x6c0/0x6c0 [ 40.424352] do_set_master+0x19e/0x200 [ 40.428216] rtnl_newlink+0x1319/0x1720 [ 40.432213] ? trace_hardirqs_on+0x10/0x10 [ 40.436439] ? rtnl_link_unregister+0x1f0/0x1f0 [ 40.441093] ? lock_acquire+0x170/0x3f0 [ 40.445122] ? lock_acquire+0x170/0x3f0 [ 40.449164] ? rtnetlink_rcv_msg+0x31d/0xb10 [ 40.453559] ? __lock_is_held+0xad/0x140 [ 40.457598] ? lock_downgrade+0x6e0/0x6e0 [ 40.461735] ? rtnl_link_unregister+0x1f0/0x1f0 [ 40.466405] rtnetlink_rcv_msg+0x3be/0xb10 [ 40.470624] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 40.475188] ? netdev_pick_tx+0x2e0/0x2e0 [ 40.479318] ? skb_clone+0x11c/0x310 [ 40.483029] ? save_trace+0x290/0x290 [ 40.486816] netlink_rcv_skb+0x127/0x370 [ 40.490866] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 40.495423] ? netlink_ack+0x980/0x980 [ 40.499295] netlink_unicast+0x437/0x620 [ 40.503340] ? netlink_attachskb+0x600/0x600 [ 40.507734] netlink_sendmsg+0x733/0xbe0 [ 40.511775] ? netlink_unicast+0x620/0x620 [ 40.515986] ? SYSC_sendto+0x2b0/0x2b0 [ 40.519852] ? security_socket_sendmsg+0x83/0xb0 [ 40.524588] ? netlink_unicast+0x620/0x620 [ 40.528801] sock_sendmsg+0xc5/0x100 [ 40.532505] ___sys_sendmsg+0x70a/0x840 [ 40.536468] ? copy_msghdr_from_user+0x380/0x380 [ 40.541201] ? trace_hardirqs_on+0x10/0x10 [ 40.545411] ? save_trace+0x290/0x290 [ 40.549191] ? trace_hardirqs_on+0x10/0x10 [ 40.553407] ? find_held_lock+0x2d/0x110 [ 40.557721] ? __might_fault+0x104/0x1b0 [ 40.561770] ? lock_acquire+0x170/0x3f0 [ 40.565782] ? lock_downgrade+0x6e0/0x6e0 [ 40.569939] ? __might_fault+0x177/0x1b0 [ 40.573982] ? _copy_to_user+0x82/0xd0 [ 40.577850] ? __fget_light+0x16a/0x1f0 [ 40.581804] ? sockfd_lookup_light+0xb2/0x160 [ 40.586279] __sys_sendmsg+0xa3/0x120 [ 40.590058] ? SyS_shutdown+0x160/0x160 [ 40.594032] ? move_addr_to_kernel+0x60/0x60 [ 40.598455] SyS_sendmsg+0x27/0x40 [ 40.601986] ? __sys_sendmsg+0x120/0x120 [ 40.606031] do_syscall_64+0x1d5/0x640 [ 40.609902] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.615788] RIP: 0033:0x443c99 [ 40.618970] RSP: 002b:00007ffe40200a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 40.626657] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443c99 [ 40.633953] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000010 [ 40.641212] RBP: 00007ffe40200a80 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 40.648470] R10: 00000000bb1414ac R11: 0000000000000246 R12: 00007ffe40200ab0 [ 40.655720] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000