Warning: Permanently added '10.128.0.219' (ECDSA) to the list of known hosts. 2021/01/27 21:13:23 fuzzer started 2021/01/27 21:13:23 connecting to host at 10.128.0.26:43789 2021/01/27 21:13:23 checking machine... 2021/01/27 21:13:23 checking revisions... 2021/01/27 21:13:23 testing simple program... syzkaller login: [ 70.161252][ T8428] IPVS: ftp: loaded support on port[0] = 21 [ 70.302613][ T8428] chnl_net:caif_netlink_parms(): no params data found [ 70.357622][ T8428] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.365713][ T8428] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.374400][ T8428] device bridge_slave_0 entered promiscuous mode [ 70.385316][ T8428] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.392532][ T8428] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.401288][ T8428] device bridge_slave_1 entered promiscuous mode [ 70.421998][ T8428] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.433439][ T8428] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.456514][ T8428] team0: Port device team_slave_0 added [ 70.463946][ T8428] team0: Port device team_slave_1 added [ 70.482086][ T8428] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 70.489442][ T8428] 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. [ 70.516049][ T8428] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 70.531192][ T8428] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 70.538157][ T8428] 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. [ 70.564236][ T8428] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 70.590812][ T8428] device hsr_slave_0 entered promiscuous mode [ 70.597473][ T8428] device hsr_slave_1 entered promiscuous mode [ 70.613854][ T8428] [ 70.616200][ T8428] ============================================ [ 70.622327][ T8428] WARNING: possible recursive locking detected [ 70.628518][ T8428] 5.11.0-rc5-next-20210127-syzkaller #0 Not tainted [ 70.635082][ T8428] -------------------------------------------- [ 70.641324][ T8428] syz-executor.0/8428 is trying to acquire lock: [ 70.647626][ T8428] ffff88801b0245e8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_netdev_notifier_call+0x615/0x1180 [ 70.658230][ T8428] [ 70.658230][ T8428] but task is already holding lock: [ 70.665571][ T8428] ffff88801b0245e8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: virt_wifi_newlink+0x4cb/0x940 [ 70.675180][ T8428] [ 70.675180][ T8428] other info that might help us debug this: [ 70.683216][ T8428] Possible unsafe locking scenario: [ 70.683216][ T8428] [ 70.690645][ T8428] CPU0 [ 70.693907][ T8428] ---- [ 70.697164][ T8428] lock(&rdev->wiphy.mtx); [ 70.701655][ T8428] lock(&rdev->wiphy.mtx); [ 70.706224][ T8428] [ 70.706224][ T8428] *** DEADLOCK *** [ 70.706224][ T8428] [ 70.714357][ T8428] May be due to missing lock nesting notation [ 70.714357][ T8428] [ 70.722654][ T8428] 2 locks held by syz-executor.0/8428: [ 70.728155][ T8428] #0: ffffffff8cc71b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 [ 70.737643][ T8428] #1: ffff88801b0245e8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: virt_wifi_newlink+0x4cb/0x940 [ 70.747547][ T8428] [ 70.747547][ T8428] stack backtrace: [ 70.753429][ T8428] CPU: 0 PID: 8428 Comm: syz-executor.0 Not tainted 5.11.0-rc5-next-20210127-syzkaller #0 [ 70.763302][ T8428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.773342][ T8428] Call Trace: [ 70.776618][ T8428] dump_stack+0x107/0x163 [ 70.780944][ T8428] __lock_acquire.cold+0x14c/0x3b4 [ 70.786046][ T8428] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 70.792019][ T8428] lock_acquire+0x1a8/0x720 [ 70.796517][ T8428] ? cfg80211_netdev_notifier_call+0x615/0x1180 [ 70.802758][ T8428] ? lock_release+0x710/0x710 [ 70.807422][ T8428] ? __lock_acquire+0x16b3/0x54c0 [ 70.812437][ T8428] __mutex_lock+0x134/0x1110 [ 70.817045][ T8428] ? cfg80211_netdev_notifier_call+0x615/0x1180 [ 70.823285][ T8428] ? cfg80211_netdev_notifier_call+0x615/0x1180 [ 70.829514][ T8428] ? mutex_lock_io_nested+0xf60/0xf60 [ 70.834873][ T8428] ? find_held_lock+0x2d/0x110 [ 70.839624][ T8428] ? __debug_object_init+0x409/0xd10 [ 70.844937][ T8428] ? mark_held_locks+0x9f/0xe0 [ 70.849693][ T8428] cfg80211_netdev_notifier_call+0x615/0x1180 [ 70.855760][ T8428] ? cfg80211_register_netdevice+0x2a0/0x2a0 [ 70.861722][ T8428] ? __devinet_sysctl_register+0x1ca/0x280 [ 70.867530][ T8428] ? debug_object_destroy+0x210/0x210 [ 70.872883][ T8428] ? lockdep_init_map_type+0x2c3/0x790 [ 70.878326][ T8428] ? lockdep_init_map_type+0x2c3/0x790 [ 70.883765][ T8428] ? add_grec+0x10e0/0x10e0 [ 70.888255][ T8428] ? __raw_spin_lock_init+0x36/0x110 [ 70.893523][ T8428] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.899748][ T8428] ? inetdev_init+0x2bb/0x4f0 [ 70.904437][ T8428] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.910663][ T8428] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 70.916892][ T8428] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 70.923248][ T8428] ? ipmr_device_event+0x1ab/0x220 [ 70.928346][ T8428] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 70.934240][ T8428] notifier_call_chain+0xb5/0x200 [ 70.939249][ T8428] call_netdevice_notifiers_info+0xb5/0x130 [ 70.945136][ T8428] register_netdevice+0x1034/0x14a0 [ 70.950329][ T8428] ? netdev_change_features+0xb0/0xb0 [ 70.955695][ T8428] ? kasan_unpoison+0x2c/0x50 [ 70.960372][ T8428] virt_wifi_newlink+0x4d3/0x940 [ 70.965300][ T8428] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 70.971550][ T8428] ? virt_wifi_rx_handler+0x320/0x320 [ 70.976909][ T8428] __rtnl_newlink+0x108b/0x16e0 [ 70.981742][ T8428] ? rtnl_setlink+0x3b0/0x3b0 [ 70.986400][ T8428] ? unwind_next_frame+0xe3b/0x1f90 [ 70.991676][ T8428] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 70.997722][ T8428] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 71.003426][ T8428] ? is_bpf_text_address+0xcb/0x160 [ 71.008704][ T8428] ? kernel_text_address+0xbd/0xf0 [ 71.013806][ T8428] ? __kernel_text_address+0x9/0x30 [ 71.018990][ T8428] ? unwind_get_return_address+0x51/0x90 [ 71.024707][ T8428] ? create_prof_cpu_mask+0x20/0x20 [ 71.029888][ T8428] ? arch_stack_walk+0x93/0xe0 [ 71.034653][ T8428] ? stack_trace_save+0x8c/0xc0 [ 71.039504][ T8428] ? fs_reclaim_release+0x9c/0xe0 [ 71.044518][ T8428] ? kasan_unpoison+0x2c/0x50 [ 71.049181][ T8428] rtnl_newlink+0x64/0xa0 [ 71.053493][ T8428] ? __rtnl_newlink+0x16e0/0x16e0 [ 71.058498][ T8428] rtnetlink_rcv_msg+0x44e/0xad0 [ 71.063426][ T8428] ? rtnetlink_put_metrics+0x510/0x510 [ 71.068881][ T8428] netlink_rcv_skb+0x153/0x420 [ 71.073660][ T8428] ? rtnetlink_put_metrics+0x510/0x510 [ 71.079118][ T8428] ? netlink_ack+0xaa0/0xaa0 [ 71.083705][ T8428] ? netlink_deliver_tap+0x227/0xb70 [ 71.088979][ T8428] ? _copy_from_iter_full+0x2fa/0x1120 [ 71.094533][ T8428] netlink_unicast+0x533/0x7d0 [ 71.099294][ T8428] ? netlink_attachskb+0x870/0x870 [ 71.104479][ T8428] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 71.110704][ T8428] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 71.116936][ T8428] ? __phys_addr_symbol+0x2c/0x70 [ 71.121942][ T8428] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 71.127655][ T8428] ? __check_object_size+0x171/0x3f0 [ 71.132953][ T8428] netlink_sendmsg+0x856/0xd90 [ 71.137703][ T8428] ? netlink_unicast+0x7d0/0x7d0 [ 71.142623][ T8428] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 71.148862][ T8428] ? netlink_unicast+0x7d0/0x7d0 [ 71.153806][ T8428] sock_sendmsg+0xcf/0x120 [ 71.158201][ T8428] __sys_sendto+0x21c/0x320 [ 71.162773][ T8428] ? __ia32_sys_getpeername+0xb0/0xb0 [ 71.168244][ T8428] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 71.174038][ T8428] ? debug_object_active_state+0x260/0x350 [ 71.179839][ T8428] ? kmem_cache_free+0x643/0x740 [ 71.184774][ T8428] ? blkcg_maybe_throttle_current+0x64d/0xd80 [ 71.190830][ T8428] ? __blkcg_punt_bio_submit+0x1d0/0x1d0 [ 71.196448][ T8428] __x64_sys_sendto+0xdd/0x1b0 [ 71.201310][ T8428] ? lockdep_hardirqs_on+0x79/0x100 [ 71.206498][ T8428] ? syscall_enter_from_user_mode+0x1d/0x50 [ 71.212414][ T8428] do_syscall_64+0x2d/0x70 [ 71.216815][ T8428] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 71.222688][ T8428] RIP: 0033:0x417c97 [ 71.226570][ T8428] Code: 2c 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 81 19 00 00 c3 48 83 ec 08 e8 e7 fa ff ff 48 89 04 24 49 89 ca b8 2c 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 2d fb ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 71.246170][ T8428] RSP: 002b:00007ffcd08da620 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 71.254586][ T8428] RAX: ffffffffffffffda RBX: 00000000016b4300 RCX: 0000000000417c97 [ 71.262563][ T8428] RDX: 000000000000004c RSI: 00000000016b4350 RDI: 0000000000000003 [ 71.270517][ T8428] RBP: 0000000000000000 R08: 00007ffcd08da630 R09: 000000000000000c [ 71.278482][ T8428] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 71.286447][ T8428] R13: 0000000000000000 R14: 00000000016b4350 R15: 0000000000000003 executing program [ 72.118878][ T2943] Bluetooth: hci0: command 0x0409 tx timeout [ 74.198671][ T2943] Bluetooth: hci0: command 0x041b tx timeout executing program [ 76.278549][ T2943] Bluetooth: hci0: command 0x040f tx timeout executing program [ 78.358384][ T2943] Bluetooth: hci0: command 0x0419 tx timeout executing program