Warning: Permanently added '10.128.0.218' (ECDSA) to the list of known hosts. 2021/01/27 21:13:25 fuzzer started 2021/01/27 21:13:25 connecting to host at 10.128.0.26:45315 2021/01/27 21:13:25 checking machine... 2021/01/27 21:13:25 checking revisions... 2021/01/27 21:13:25 testing simple program... syzkaller login: [ 71.734829][ T8437] IPVS: ftp: loaded support on port[0] = 21 [ 71.915275][ T8437] chnl_net:caif_netlink_parms(): no params data found [ 71.978925][ T8437] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.986895][ T8437] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.995867][ T8437] device bridge_slave_0 entered promiscuous mode [ 72.006599][ T8437] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.015862][ T8437] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.023862][ T8437] device bridge_slave_1 entered promiscuous mode [ 72.046236][ T8437] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.058240][ T8437] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.081423][ T8437] team0: Port device team_slave_0 added [ 72.089158][ T8437] team0: Port device team_slave_1 added [ 72.108646][ T8437] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.116452][ T8437] 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. [ 72.143588][ T8437] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.157566][ T8437] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.164769][ T8437] 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. [ 72.191701][ T8437] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.220139][ T8437] device hsr_slave_0 entered promiscuous mode [ 72.228557][ T8437] device hsr_slave_1 entered promiscuous mode [ 72.247593][ T8437] [ 72.250120][ T8437] ============================================ [ 72.256486][ T8437] WARNING: possible recursive locking detected [ 72.262815][ T8437] 5.11.0-rc5-next-20210127-syzkaller #0 Not tainted [ 72.270036][ T8437] -------------------------------------------- [ 72.276261][ T8437] syz-executor.0/8437 is trying to acquire lock: [ 72.282840][ T8437] ffff88801b1aa5e8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_netdev_notifier_call+0x615/0x1180 [ 72.293611][ T8437] [ 72.293611][ T8437] but task is already holding lock: [ 72.301466][ T8437] ffff88801b1aa5e8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: virt_wifi_newlink+0x4cb/0x940 [ 72.311124][ T8437] [ 72.311124][ T8437] other info that might help us debug this: [ 72.319481][ T8437] Possible unsafe locking scenario: [ 72.319481][ T8437] [ 72.327456][ T8437] CPU0 [ 72.330725][ T8437] ---- [ 72.333996][ T8437] lock(&rdev->wiphy.mtx); [ 72.338609][ T8437] lock(&rdev->wiphy.mtx); [ 72.343345][ T8437] [ 72.343345][ T8437] *** DEADLOCK *** [ 72.343345][ T8437] [ 72.351602][ T8437] May be due to missing lock nesting notation [ 72.351602][ T8437] [ 72.360607][ T8437] 2 locks held by syz-executor.0/8437: [ 72.366104][ T8437] #0: ffffffff8cc71b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 [ 72.376705][ T8437] #1: ffff88801b1aa5e8 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: virt_wifi_newlink+0x4cb/0x940 [ 72.386714][ T8437] [ 72.386714][ T8437] stack backtrace: [ 72.392593][ T8437] CPU: 0 PID: 8437 Comm: syz-executor.0 Not tainted 5.11.0-rc5-next-20210127-syzkaller #0 [ 72.402956][ T8437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.413772][ T8437] Call Trace: [ 72.417593][ T8437] dump_stack+0x107/0x163 [ 72.422127][ T8437] __lock_acquire.cold+0x14c/0x3b4 [ 72.427426][ T8437] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 72.433514][ T8437] lock_acquire+0x1a8/0x720 [ 72.438908][ T8437] ? cfg80211_netdev_notifier_call+0x615/0x1180 [ 72.445597][ T8437] ? lock_release+0x710/0x710 [ 72.450294][ T8437] ? __lock_acquire+0x16b3/0x54c0 [ 72.455572][ T8437] __mutex_lock+0x134/0x1110 [ 72.460502][ T8437] ? cfg80211_netdev_notifier_call+0x615/0x1180 [ 72.466938][ T8437] ? cfg80211_netdev_notifier_call+0x615/0x1180 [ 72.473581][ T8437] ? mutex_lock_io_nested+0xf60/0xf60 [ 72.479841][ T8437] ? find_held_lock+0x2d/0x110 [ 72.484955][ T8437] ? __debug_object_init+0x409/0xd10 [ 72.490274][ T8437] ? mark_held_locks+0x9f/0xe0 [ 72.495222][ T8437] cfg80211_netdev_notifier_call+0x615/0x1180 [ 72.501321][ T8437] ? cfg80211_register_netdevice+0x2a0/0x2a0 [ 72.507443][ T8437] ? __devinet_sysctl_register+0x1ca/0x280 [ 72.513260][ T8437] ? debug_object_destroy+0x210/0x210 [ 72.519078][ T8437] ? lockdep_init_map_type+0x2c3/0x790 [ 72.524529][ T8437] ? lockdep_init_map_type+0x2c3/0x790 [ 72.530262][ T8437] ? add_grec+0x10e0/0x10e0 [ 72.534957][ T8437] ? __raw_spin_lock_init+0x36/0x110 [ 72.540425][ T8437] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.547149][ T8437] ? inetdev_init+0x2bb/0x4f0 [ 72.552218][ T8437] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.558971][ T8437] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.565782][ T8437] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.572667][ T8437] ? ipmr_device_event+0x1ab/0x220 [ 72.577991][ T8437] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 72.583976][ T8437] notifier_call_chain+0xb5/0x200 [ 72.589001][ T8437] call_netdevice_notifiers_info+0xb5/0x130 [ 72.595117][ T8437] register_netdevice+0x1034/0x14a0 [ 72.600379][ T8437] ? netdev_change_features+0xb0/0xb0 [ 72.605766][ T8437] ? kasan_unpoison+0x2c/0x50 [ 72.610540][ T8437] virt_wifi_newlink+0x4d3/0x940 [ 72.615657][ T8437] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 72.621924][ T8437] ? virt_wifi_rx_handler+0x320/0x320 [ 72.627282][ T8437] __rtnl_newlink+0x108b/0x16e0 [ 72.632224][ T8437] ? rtnl_setlink+0x3b0/0x3b0 [ 72.636901][ T8437] ? unwind_next_frame+0xe3b/0x1f90 [ 72.642174][ T8437] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.648588][ T8437] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 72.654320][ T8437] ? is_bpf_text_address+0xcb/0x160 [ 72.659600][ T8437] ? kernel_text_address+0xbd/0xf0 [ 72.664730][ T8437] ? __kernel_text_address+0x9/0x30 [ 72.670122][ T8437] ? unwind_get_return_address+0x51/0x90 [ 72.676029][ T8437] ? create_prof_cpu_mask+0x20/0x20 [ 72.681314][ T8437] ? arch_stack_walk+0x93/0xe0 [ 72.686216][ T8437] ? stack_trace_save+0x8c/0xc0 [ 72.691103][ T8437] ? fs_reclaim_release+0x9c/0xe0 [ 72.696623][ T8437] ? kasan_unpoison+0x2c/0x50 [ 72.701315][ T8437] rtnl_newlink+0x64/0xa0 [ 72.705657][ T8437] ? __rtnl_newlink+0x16e0/0x16e0 [ 72.710767][ T8437] rtnetlink_rcv_msg+0x44e/0xad0 [ 72.716053][ T8437] ? rtnetlink_put_metrics+0x510/0x510 [ 72.721691][ T8437] netlink_rcv_skb+0x153/0x420 [ 72.726554][ T8437] ? rtnetlink_put_metrics+0x510/0x510 [ 72.732194][ T8437] ? netlink_ack+0xaa0/0xaa0 [ 72.736806][ T8437] ? netlink_deliver_tap+0x227/0xb70 [ 72.742110][ T8437] ? _copy_from_iter_full+0x2fa/0x1120 [ 72.747673][ T8437] netlink_unicast+0x533/0x7d0 [ 72.752434][ T8437] ? netlink_attachskb+0x870/0x870 [ 72.757531][ T8437] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.763777][ T8437] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 72.770050][ T8437] ? __phys_addr_symbol+0x2c/0x70 [ 72.775063][ T8437] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 72.781036][ T8437] ? __check_object_size+0x171/0x3f0 [ 72.786329][ T8437] netlink_sendmsg+0x856/0xd90 [ 72.791315][ T8437] ? netlink_unicast+0x7d0/0x7d0 [ 72.796245][ T8437] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 72.802492][ T8437] ? netlink_unicast+0x7d0/0x7d0 [ 72.807692][ T8437] sock_sendmsg+0xcf/0x120 [ 72.812241][ T8437] __sys_sendto+0x21c/0x320 [ 72.816834][ T8437] ? __ia32_sys_getpeername+0xb0/0xb0 [ 72.822252][ T8437] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 72.828149][ T8437] ? debug_object_active_state+0x260/0x350 [ 72.834054][ T8437] ? kmem_cache_free+0x643/0x740 [ 72.839076][ T8437] ? blkcg_maybe_throttle_current+0x64d/0xd80 [ 72.845143][ T8437] ? __blkcg_punt_bio_submit+0x1d0/0x1d0 [ 72.850780][ T8437] __x64_sys_sendto+0xdd/0x1b0 [ 72.855548][ T8437] ? lockdep_hardirqs_on+0x79/0x100 [ 72.860735][ T8437] ? syscall_enter_from_user_mode+0x1d/0x50 [ 72.866642][ T8437] do_syscall_64+0x2d/0x70 [ 72.871068][ T8437] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.877530][ T8437] RIP: 0033:0x417c97 [ 72.881511][ T8437] 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 [ 72.901658][ T8437] RSP: 002b:00007fff10930a60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 72.910325][ T8437] RAX: ffffffffffffffda RBX: 00000000016b4300 RCX: 0000000000417c97 [ 72.918378][ T8437] RDX: 000000000000004c RSI: 00000000016b4350 RDI: 0000000000000003 [ 72.926702][ T8437] RBP: 0000000000000000 R08: 00007fff10930a70 R09: 000000000000000c [ 72.934874][ T8437] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 72.943346][ T8437] R13: 0000000000000000 R14: 00000000016b4350 R15: 0000000000000003 executing program [ 73.735237][ T3751] Bluetooth: hci0: command 0x0409 tx timeout [ 75.815047][ T3751] Bluetooth: hci0: command 0x041b tx timeout executing program [ 77.894915][ T3751] Bluetooth: hci0: command 0x040f tx timeout executing program [ 79.974684][ T3751] Bluetooth: hci0: command 0x0419 tx timeout executing program