Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts. [ 33.460642] audit: type=1400 audit(1599015517.875:8): avc: denied { execmem } for pid=6349 comm="syz-executor252" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 33.486774] IPVS: ftp: loaded support on port[0] = 21 [ 33.559814] chnl_net:caif_netlink_parms(): no params data found [ 33.669467] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.677480] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.689246] device bridge_slave_0 entered promiscuous mode [ 33.697588] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.706995] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.714540] device bridge_slave_1 entered promiscuous mode [ 33.734086] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 33.743548] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 33.763048] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 33.771123] team0: Port device team_slave_0 added [ 33.776697] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 33.785339] team0: Port device team_slave_1 added [ 33.801659] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 33.810210] 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. [ 33.839499] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 33.852582] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 33.861067] 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. [ 33.893040] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 33.904782] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 33.914029] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 33.933628] device hsr_slave_0 entered promiscuous mode [ 33.941601] device hsr_slave_1 entered promiscuous mode [ 33.948302] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 33.956150] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 34.023031] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.032371] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.041687] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.049344] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.080162] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.087187] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.098893] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.107951] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.128952] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.136811] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.147081] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 34.154490] 8021q: adding VLAN 0 to HW filter on device team0 [ 34.163907] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 34.172275] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.179186] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.189156] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 34.198789] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.205533] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.221920] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 34.229903] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 34.240699] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 34.254405] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 34.267116] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 34.278919] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 34.286109] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 34.294545] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 34.303218] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 34.316162] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 34.324891] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 34.332596] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 34.342622] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 34.396575] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 34.406514] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 34.435950] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 34.443719] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 34.450604] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 34.460652] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 34.469610] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 34.476737] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 34.486794] device veth0_vlan entered promiscuous mode [ 34.496846] device veth1_vlan entered promiscuous mode [ 34.504407] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 34.514163] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 34.526865] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 34.536598] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 34.544296] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 34.551871] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 34.560650] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.570168] device veth0_macvtap entered promiscuous mode [ 34.579542] device veth1_macvtap entered promiscuous mode [ 34.589212] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 34.600197] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 34.611522] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 34.619611] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 34.626902] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 34.636157] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 34.647518] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 34.655184] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 34.662575] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 34.671085] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 34.767477] device team1 entered promiscuous mode [ 34.779458] IPv6: ADDRCONF(NETDEV_UP): macvtap1: link is not ready [ 34.786215] 8021q: adding VLAN 0 to HW filter on device macvtap1 [ 34.793778] [ 34.795659] ============================================ [ 34.801253] WARNING: possible recursive locking detected [ 34.807017] 4.14.195-syzkaller #0 Not tainted [ 34.811691] -------------------------------------------- [ 34.817435] syz-executor252/6350 is trying to acquire lock: [ 34.824599] (&team->lock){+.+.}, at: [] team_vlan_rx_add_vid+0x38/0x1d0 [ 34.834918] [ 34.834918] but task is already holding lock: [ 34.841491] (&team->lock){+.+.}, at: [] team_add_slave+0x7d/0x1ad0 [ 34.850245] [ 34.850245] other info that might help us debug this: [ 34.857221] Possible unsafe locking scenario: [ 34.857221] [ 34.863740] CPU0 [ 34.867845] ---- [ 34.870470] lock(&team->lock); [ 34.873974] lock(&team->lock); [ 34.877384] [ 34.877384] *** DEADLOCK *** [ 34.877384] [ 34.883803] May be due to missing lock nesting notation [ 34.883803] [ 34.891294] 2 locks held by syz-executor252/6350: [ 34.896483] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 [ 34.905311] #1: (&team->lock){+.+.}, at: [] team_add_slave+0x7d/0x1ad0 [ 34.914325] [ 34.914325] stack backtrace: [ 34.919093] CPU: 1 PID: 6350 Comm: syz-executor252 Not tainted 4.14.195-syzkaller #0 [ 34.927049] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.936786] Call Trace: [ 34.939795] dump_stack+0x1b2/0x283 [ 34.943563] __lock_acquire.cold+0x180/0x97c [ 34.948172] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 34.953323] ? trace_hardirqs_on+0x10/0x10 [ 34.957937] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 34.963123] ? depot_save_stack+0x1d3/0x3e3 [ 34.967758] ? kasan_kmalloc+0x139/0x160 [ 34.971811] ? kasan_kmalloc+0xeb/0x160 [ 34.975865] ? kmem_cache_alloc_trace+0x131/0x3d0 [ 34.980779] ? vlan_vid_add+0x237/0x7d0 [ 34.984884] ? vlan_vid_add+0x5ef/0x7d0 [ 34.988903] ? vlan_device_event.cold+0x23/0x28 [ 34.993576] ? notifier_call_chain+0x108/0x1a0 [ 34.998529] lock_acquire+0x170/0x3f0 [ 35.002513] ? team_vlan_rx_add_vid+0x38/0x1d0 [ 35.007475] ? team_vlan_rx_add_vid+0x38/0x1d0 [ 35.012379] __mutex_lock+0xc4/0x1310 [ 35.016228] ? team_vlan_rx_add_vid+0x38/0x1d0 [ 35.021586] ? entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 35.027293] ? trace_hardirqs_on+0x10/0x10 [ 35.031665] ? io_schedule_timeout+0x140/0x140 [ 35.036644] ? team_vlan_rx_add_vid+0x38/0x1d0 [ 35.041595] ? __ww_mutex_wakeup_for_backoff+0x210/0x210 [ 35.047237] ? fs_reclaim_release+0xd0/0x110 [ 35.051819] ? vlan_vid_add+0x237/0x7d0 [ 35.056234] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 35.061684] team_vlan_rx_add_vid+0x38/0x1d0 [ 35.066422] vlan_vid_add+0x5ef/0x7d0 [ 35.070353] vlan_vid_add+0x5ef/0x7d0 [ 35.074425] vlan_device_event.cold+0x23/0x28 [ 35.078916] ? phonet_address_add+0x2e0/0x2e0 [ 35.083858] ? unregister_vlan_dev+0x480/0x480 [ 35.088773] ? packet_notifier+0x43d/0x730 [ 35.093690] ? cgw_notifier+0x83/0x300 [ 35.097697] ? br_device_event+0x148/0x570 [ 35.102092] notifier_call_chain+0x108/0x1a0 [ 35.106501] dev_open+0xf9/0x110 [ 35.109858] ? __dev_open+0x310/0x310 [ 35.113707] ? team_add_slave+0x6ef/0x1ad0 [ 35.118251] ? memcpy+0x35/0x50 [ 35.121519] team_add_slave+0x954/0x1ad0 [ 35.125568] ? team_options_register+0x50/0x50 [ 35.130140] ? netdev_is_rx_handler_busy+0x67/0xc0 [ 35.135195] ? team_options_register+0x50/0x50 [ 35.139769] do_set_master+0x19e/0x200 [ 35.143649] rtnl_newlink+0x134c/0x1830 [ 35.148187] ? __lock_acquire+0x5fc/0x3f20 [ 35.152606] ? kmem_cache_free+0x7c/0x2b0 [ 35.157137] ? rtnl_dellink+0x6a0/0x6a0 [ 35.161273] ? trace_hardirqs_on+0x10/0x10 [ 35.165573] ? lock_acquire+0x170/0x3f0 [ 35.169612] ? lock_acquire+0x170/0x3f0 [ 35.173585] ? lock_downgrade+0x740/0x740 [ 35.178045] ? rtnl_dellink+0x6a0/0x6a0 [ 35.182009] rtnetlink_rcv_msg+0x3be/0xb10 [ 35.186233] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 35.190883] ? __netlink_lookup+0x345/0x5d0 [ 35.195196] ? netdev_pick_tx+0x2e0/0x2e0 [ 35.199424] netlink_rcv_skb+0x125/0x390 [ 35.203478] ? memcpy+0x35/0x50 [ 35.207072] ? rtnl_calcit.isra.0+0x3a0/0x3a0 [ 35.211559] ? netlink_ack+0x9a0/0x9a0 [ 35.215568] netlink_unicast+0x437/0x610 [ 35.219792] ? netlink_sendskb+0xd0/0xd0 [ 35.223898] netlink_sendmsg+0x62e/0xb80 [ 35.227951] ? nlmsg_notify+0x170/0x170 [ 35.232053] ? kernel_recvmsg+0x210/0x210 [ 35.236453] ? security_socket_sendmsg+0x83/0xb0 [ 35.241337] ? nlmsg_notify+0x170/0x170 [ 35.245316] sock_sendmsg+0xb5/0x100 [ 35.249123] ___sys_sendmsg+0x6c8/0x800 [ 35.253223] ? copy_msghdr_from_user+0x3b0/0x3b0 [ 35.258032] ? trace_hardirqs_on+0x10/0x10 [ 35.262284] ? trace_hardirqs_on+0x10/0x10 [ 35.266773] ? reacquire_held_locks+0xb5/0x3f0 [ 35.271348] ? release_sock+0x1b/0x1b0 [ 35.275633] ? lock_sock_nested+0x98/0x100 [ 35.280376] ? __might_fault+0x104/0x1b0 [ 35.284610] ? lock_acquire+0x170/0x3f0 [ 35.288712] ? lock_downgrade+0x740/0x740 [ 35.292948] ? __might_fault+0x177/0x1b0 [ 35.297001] ? _copy_to_user+0x82/0xd0 [ 35.301107] ? move_addr_to_user+0x13f/0x180 [ 35.305574] ? __fdget+0x167/0x1f0 [ 35.309376] ? sockfd_lookup_light+0xb2/0x160 [ 35.314242] __sys_sendmsg+0xa3/0x120 [ 35.318303] ? SyS_shutdown+0x160/0x160 [ 35.322566] ? security_file_ioctl+0x83/0xb0 [ 35.327120] SyS_sendmsg+0x27/0x40 [ 35.330663] ? __sys_sendmsg+0x120/0x120 [ 35.334934] do_syscall_64+0x1d5/0x640 [ 35.338958] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 35.344409] RIP: 0033:0x443759 [ 35.347591] RSP: 002b:00007fffb142bdd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 35.355476] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000443759 [ 35.362972] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004