[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.15' (ECDSA) to the list of known hosts. 2020/11/05 13:50:32 fuzzer started 2020/11/05 13:50:32 connecting to host at 10.128.0.26:33165 2020/11/05 13:50:32 checking machine... 2020/11/05 13:50:32 checking revisions... 2020/11/05 13:50:32 testing simple program... syzkaller login: [ 65.002442][ T8501] IPVS: ftp: loaded support on port[0] = 21 [ 65.132553][ T8501] chnl_net:caif_netlink_parms(): no params data found [ 65.196307][ T8501] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.206001][ T8501] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.214527][ T8501] device bridge_slave_0 entered promiscuous mode [ 65.224203][ T8501] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.231447][ T8501] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.240610][ T8501] device bridge_slave_1 entered promiscuous mode [ 65.265688][ T8501] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.276851][ T8501] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.298369][ T8501] team0: Port device team_slave_0 added [ 65.305924][ T8501] team0: Port device team_slave_1 added [ 65.323699][ T8501] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 65.331172][ T8501] 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. [ 65.357246][ T8501] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 65.370604][ T8501] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 65.377819][ T8501] 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. [ 65.403805][ T8501] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 65.430685][ T8501] device hsr_slave_0 entered promiscuous mode [ 65.437361][ T8501] device hsr_slave_1 entered promiscuous mode [ 65.532036][ T8501] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.542149][ T8501] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.552148][ T8501] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.562231][ T8501] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.587260][ T8501] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.594512][ T8501] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.602268][ T8501] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.609426][ T8501] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.655698][ T8501] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.669881][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.680803][ T3202] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.689446][ T3202] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.698923][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 65.711790][ T8501] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.722967][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.733059][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.740193][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.759088][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.767875][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.774907][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.797434][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.807945][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.816197][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.824733][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.834714][ T8501] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.844757][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.862269][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.870226][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.883853][ T8501] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.909458][ T4908] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 65.923428][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.933341][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 65.942221][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 65.952710][ T8501] device veth0_vlan entered promiscuous mode [ 65.964135][ T8501] device veth1_vlan entered promiscuous mode [ 65.985398][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.994392][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.003517][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.015725][ T8501] device veth0_macvtap entered promiscuous mode [ 66.026131][ T8501] device veth1_macvtap entered promiscuous mode [ 66.043719][ T8501] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.051222][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.062247][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.073586][ T8501] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.082498][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.094533][ T8501] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.106807][ T8501] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.115485][ T8501] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.125073][ T8501] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.214810][ T263] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.226045][ T263] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.253835][ T21] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.258695][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.265911][ T21] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.279750][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 66.328981][ T263] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 66.339713][ T263] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 263, name: kworker/u4:6 [ 66.351428][ T263] 4 locks held by kworker/u4:6/263: [ 66.358287][ T263] #0: ffff88801c468138 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 66.370397][ T263] #1: ffffc900018dfda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 2020/11/05 13:50:35 building call list... [ 66.400687][ T263] #2: ffff88801ccacd00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 66.431801][ T263] #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 66.456302][ T263] Preemption disabled at: [ 66.456328][ T263] [] __mutex_lock+0x10f/0x10e0 [ 66.473358][ T263] CPU: 0 PID: 263 Comm: kworker/u4:6 Not tainted 5.10.0-rc1-syzkaller #0 [ 66.481785][ T263] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.491844][ T263] Workqueue: phy3 ieee80211_iface_work [ 66.497307][ T263] Call Trace: [ 66.500593][ T263] dump_stack+0x107/0x163 [ 66.504909][ T263] ? __mutex_lock+0x10f/0x10e0 [ 66.509675][ T263] ___might_sleep.cold+0x1e8/0x22e [ 66.514781][ T263] sta_info_move_state+0x32/0x8d0 [ 66.519807][ T263] sta_info_free+0x65/0x3b0 [ 66.524310][ T263] sta_info_insert_rcu+0x303/0x2ba0 [ 66.529495][ T263] ? find_held_lock+0x2d/0x110 [ 66.534267][ T263] ? rate_control_rate_init+0x32c/0x6a0 [ 66.539825][ T263] ? sta_info_free+0x3b0/0x3b0 [ 66.544592][ T263] ? __local_bh_enable_ip+0x9c/0x110 [ 66.549892][ T263] ? rate_control_rate_init+0x35f/0x6a0 [ 66.555450][ T263] ieee80211_ibss_finish_sta+0x212/0x390 [ 66.561090][ T263] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 66.567165][ T263] ? __local_bh_enable_ip+0x9c/0x110 executing program [ 66.572470][ T263] ieee80211_ibss_work+0x2c7/0xe80 [ 66.577598][ T263] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 66.583939][ T263] ? mark_held_locks+0x9f/0xe0 [ 66.588714][ T263] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 66.594527][ T263] ? lockdep_hardirqs_on+0x85/0x110 [ 66.599736][ T263] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 66.605552][ T263] ieee80211_iface_work+0x82e/0x970 [ 66.610769][ T263] process_one_work+0x933/0x15a0 [ 66.615722][ T263] ? lock_release+0x710/0x710 [ 66.620403][ T263] ? pwq_dec_nr_in_flight+0x320/0x320 [ 66.625786][ T263] ? rwlock_bug.part.0+0x90/0x90 [ 66.630734][ T263] ? _raw_spin_lock_irq+0x41/0x50 [ 66.635774][ T263] worker_thread+0x64c/0x1120 [ 66.640476][ T263] ? process_one_work+0x15a0/0x15a0 [ 66.645685][ T263] kthread+0x3af/0x4a0 [ 66.649765][ T263] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 66.655662][ T263] ret_from_fork+0x1f/0x30 [ 66.686945][ T263] [ 66.689296][ T263] ============================= [ 66.694121][ T263] [ BUG: Invalid wait context ] [ 66.698954][ T263] 5.10.0-rc1-syzkaller #0 Tainted: G W [ 66.705698][ T263] ----------------------------- [ 66.710536][ T263] kworker/u4:6/263 is trying to lock: [ 66.715893][ T263] ffff88801b9029d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 [ 66.726492][ T263] other info that might help us debug this: [ 66.732367][ T263] context-{4:4} [ 66.735814][ T263] 4 locks held by kworker/u4:6/263: [ 66.740994][ T263] #0: ffff88801c468138 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 66.751164][ T263] #1: ffffc900018dfda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 66.762386][ T263] #2: ffff88801ccacd00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 66.771868][ T263] #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 66.781788][ T263] stack backtrace: [ 66.785507][ T263] CPU: 0 PID: 263 Comm: kworker/u4:6 Tainted: G W 5.10.0-rc1-syzkaller #0 [ 66.795294][ T263] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.805349][ T263] Workqueue: phy3 ieee80211_iface_work [ 66.810798][ T263] Call Trace: [ 66.814082][ T263] dump_stack+0x107/0x163 [ 66.818403][ T263] __lock_acquire.cold+0x310/0x3a2 [ 66.823515][ T263] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 66.829489][ T263] ? find_held_lock+0x2d/0x110 [ 66.834249][ T263] lock_acquire+0x1af/0x8b0 [ 66.838747][ T263] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 66.844720][ T263] ? lock_release+0x710/0x710 [ 66.849403][ T263] __mutex_lock+0x134/0x10e0 [ 66.853985][ T263] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 66.859957][ T263] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 66.865930][ T263] ? mutex_lock_io_nested+0xf60/0xf60 [ 66.871322][ T263] ? ieee80211_clear_fast_rx+0x58/0x80 [ 66.876782][ T263] ? mark_held_locks+0x9f/0xe0 [ 66.881545][ T263] ieee80211_recalc_min_chandef+0x49/0x140 [ 66.887351][ T263] sta_info_move_state+0x3cf/0x8d0 [ 66.892460][ T263] sta_info_free+0x65/0x3b0 [ 66.896960][ T263] sta_info_insert_rcu+0x303/0x2ba0 [ 66.902151][ T263] ? find_held_lock+0x2d/0x110 [ 66.906916][ T263] ? rate_control_rate_init+0x32c/0x6a0 [ 66.912460][ T263] ? sta_info_free+0x3b0/0x3b0 [ 66.917237][ T263] ? __local_bh_enable_ip+0x9c/0x110 [ 66.922516][ T263] ? rate_control_rate_init+0x35f/0x6a0 [ 66.928059][ T263] ieee80211_ibss_finish_sta+0x212/0x390 [ 66.933692][ T263] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 66.939757][ T263] ? __local_bh_enable_ip+0x9c/0x110 [ 66.945043][ T263] ieee80211_ibss_work+0x2c7/0xe80 [ 66.950159][ T263] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 66.956522][ T263] ? mark_held_locks+0x9f/0xe0 [ 66.961289][ T263] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 66.967090][ T263] ? lockdep_hardirqs_on+0x85/0x110 [ 66.972300][ T263] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 66.978100][ T263] ieee80211_iface_work+0x82e/0x970 [ 66.983308][ T263] process_one_work+0x933/0x15a0 [ 66.988241][ T263] ? lock_release+0x710/0x710 [ 66.992907][ T263] ? pwq_dec_nr_in_flight+0x320/0x320 [ 66.998271][ T263] ? rwlock_bug.part.0+0x90/0x90 [ 67.003208][ T263] ? _raw_spin_lock_irq+0x41/0x50 [ 67.008229][ T263] worker_thread+0x64c/0x1120 [ 67.012900][ T263] ? process_one_work+0x15a0/0x15a0 [ 67.018088][ T263] kthread+0x3af/0x4a0 [ 67.022151][ T263] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 67.026427][ T3202] Bluetooth: hci0: command 0x0409 tx timeout [ 67.028036][ T263] ret_from_fork+0x1f/0x30 [ 67.210423][ T263] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.305744][ T263] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.400456][ T263] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.492349][ T263] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 68.695912][ T263] device hsr_slave_0 left promiscuous mode [ 68.709793][ T263] device hsr_slave_1 left promiscuous mode [ 68.720308][ T263] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 68.729316][ T263] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 68.738892][ T263] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 68.746921][ T263] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 68.755038][ T263] device bridge_slave_1 left promiscuous mode [ 68.762405][ T263] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.771125][ T263] device bridge_slave_0 left promiscuous mode [ 68.778338][ T263] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.788951][ T263] device veth1_macvtap left promiscuous mode [ 68.794990][ T263] device veth0_macvtap left promiscuous mode [ 68.802403][ T263] device veth1_vlan left promiscuous mode [ 68.808786][ T263] device veth0_vlan left promiscuous mode executing program [ 69.737309][ T263] team0 (unregistering): Port device team_slave_1 removed [ 69.747526][ T263] team0 (unregistering): Port device team_slave_0 removed [ 69.758278][ T263] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 69.770641][ T263] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 69.797127][ T263] bond0 (unregistering): Released all slaves [ 69.874088][ T8489] can: request_module (can-proto-0) failed. [ 70.273267][ T8489] can: request_module (can-proto-0) failed. [ 70.282926][ T8489] can: request_module (can-proto-0) failed. [ 70.423703][ T8489] base_sock_release(000000002769b4c8) sk=00000000b8cf8315