[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.166' (ECDSA) to the list of known hosts. 2020/11/09 11:10:39 fuzzer started 2020/11/09 11:10:39 connecting to host at 10.128.0.26:43509 2020/11/09 11:10:39 checking machine... 2020/11/09 11:10:39 checking revisions... 2020/11/09 11:10:39 testing simple program... syzkaller login: [ 64.126625][ T8474] IPVS: ftp: loaded support on port[0] = 21 [ 64.258376][ T8474] chnl_net:caif_netlink_parms(): no params data found [ 64.311712][ T8474] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.320611][ T8474] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.329963][ T8474] device bridge_slave_0 entered promiscuous mode [ 64.339690][ T8474] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.346784][ T8474] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.356253][ T8474] device bridge_slave_1 entered promiscuous mode [ 64.377809][ T8474] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.389569][ T8474] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.412512][ T8474] team0: Port device team_slave_0 added [ 64.420451][ T8474] team0: Port device team_slave_1 added [ 64.437885][ T8474] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 64.444911][ T8474] 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. [ 64.470875][ T8474] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 64.484624][ T8474] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 64.491825][ T8474] 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. [ 64.518186][ T8474] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 64.545125][ T8474] device hsr_slave_0 entered promiscuous mode [ 64.551840][ T8474] device hsr_slave_1 entered promiscuous mode [ 64.654019][ T8474] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 64.665269][ T8474] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 64.675261][ T8474] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 64.685887][ T8474] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 64.710318][ T8474] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.717620][ T8474] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.727421][ T8474] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.734572][ T8474] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.785006][ T8474] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.799632][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.810444][ T3002] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.819853][ T3002] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.827999][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 64.841051][ T8474] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.852978][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.862249][ T3002] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.869368][ T3002] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.888212][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.896581][ T3002] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.903715][ T3002] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.916469][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.930826][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.938840][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.957300][ T8474] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 64.967894][ T8474] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 64.981651][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.991457][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.010058][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.017623][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.025012][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.040940][ T8474] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.060802][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 65.082836][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.092056][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 65.101057][ T3002] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 65.111513][ T8474] device veth0_vlan entered promiscuous mode [ 65.123913][ T8474] device veth1_vlan entered promiscuous mode [ 65.145550][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.154502][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 65.163335][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 65.174146][ T8474] device veth0_macvtap entered promiscuous mode [ 65.185490][ T8474] device veth1_macvtap entered promiscuous mode [ 65.204792][ T8474] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 65.212511][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 65.222402][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 65.234232][ T8474] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 65.242905][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 65.252559][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 65.263505][ T8474] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.273256][ T8474] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.282440][ T8474] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.292295][ T8474] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.377725][ T21] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.386188][ T21] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.400414][ T206] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 65.405180][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 65.429814][ T206] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 65.441960][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 65.457428][ T206] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 65.467793][ T206] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 206, name: kworker/u4:4 [ 65.478615][ T206] 4 locks held by kworker/u4:4/206: [ 65.483827][ T206] #0: ffff88801ab84138 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 65.518408][ T206] #1: ffffc9000125fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 65.530666][ T206] #2: ffff88801b984d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 65.568538][ T206] #3: ffffffff8b3386a0 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 2020/11/09 11:10:42 building call list... [ 65.580227][ T206] Preemption disabled at: [ 65.580255][ T206] [] __mutex_lock+0x10f/0x1110 [ 65.594132][ T206] CPU: 0 PID: 206 Comm: kworker/u4:4 Not tainted 5.10.0-rc2-next-20201109-syzkaller #0 [ 65.603779][ T206] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.613850][ T206] Workqueue: phy4 ieee80211_iface_work [ 65.619314][ T206] Call Trace: [ 65.622612][ T206] dump_stack+0x107/0x163 [ 65.626954][ T206] ? __mutex_lock+0x10f/0x1110 [ 65.631724][ T206] ___might_sleep.cold+0x1e8/0x22e [ 65.636853][ T206] sta_info_move_state+0x32/0x8d0 [ 65.641893][ T206] sta_info_free+0x65/0x3b0 [ 65.646418][ T206] sta_info_insert_rcu+0x303/0x2ba0 [ 65.651638][ T206] ? find_held_lock+0x2d/0x110 [ 65.656417][ T206] ? rate_control_rate_init+0x32c/0x6a0 [ 65.661995][ T206] ? sta_info_free+0x3b0/0x3b0 [ 65.666764][ T206] ? __local_bh_enable_ip+0x9c/0x110 [ 65.672326][ T206] ? rate_control_rate_init+0x35f/0x6a0 [ 65.677883][ T206] ieee80211_ibss_finish_sta+0x212/0x390 [ 65.683520][ T206] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 65.689597][ T206] ? __local_bh_enable_ip+0x9c/0x110 [ 65.694896][ T206] ieee80211_ibss_work+0x2c7/0xe80 [ 65.700021][ T206] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 65.706357][ T206] ? mark_held_locks+0x9f/0xe0 [ 65.711132][ T206] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 65.716945][ T206] ? lockdep_hardirqs_on+0x79/0x100 [ 65.722153][ T206] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 65.727971][ T206] ieee80211_iface_work+0x91f/0xa90 [ 65.733188][ T206] process_one_work+0x933/0x15a0 [ 65.738139][ T206] ? lock_release+0x710/0x710 [ 65.742823][ T206] ? pwq_dec_nr_in_flight+0x320/0x320 [ 65.748211][ T206] ? rwlock_bug.part.0+0x90/0x90 [ 65.753147][ T206] ? _raw_spin_lock_irq+0x41/0x50 [ 65.758186][ T206] worker_thread+0x64c/0x1120 [ 65.762881][ T206] ? process_one_work+0x15a0/0x15a0 [ 65.768082][ T206] kthread+0x3af/0x4a0 [ 65.772154][ T206] ? kthread_create_worker_on_cpu+0xf0/0xf0 executing program [ 65.778052][ T206] ret_from_fork+0x1f/0x30 [ 65.803240][ T206] [ 65.805589][ T206] ============================= [ 65.810420][ T206] [ BUG: Invalid wait context ] [ 65.815256][ T206] 5.10.0-rc2-next-20201109-syzkaller #0 Tainted: G W [ 65.823243][ T206] ----------------------------- [ 65.828076][ T206] kworker/u4:4/206 is trying to lock: [ 65.833429][ T206] ffff88801af0a9d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 [ 65.844027][ T206] other info that might help us debug this: [ 65.849916][ T206] context-{4:4} [ 65.853360][ T206] 4 locks held by kworker/u4:4/206: [ 65.858537][ T206] #0: ffff88801ab84138 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 65.868699][ T206] #1: ffffc9000125fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 65.879908][ T206] #2: ffff88801b984d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 65.889386][ T206] #3: ffffffff8b3386a0 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 65.899302][ T206] stack backtrace: [ 65.903024][ T206] CPU: 0 PID: 206 Comm: kworker/u4:4 Tainted: G W 5.10.0-rc2-next-20201109-syzkaller #0 [ 65.914019][ T206] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.924072][ T206] Workqueue: phy4 ieee80211_iface_work [ 65.929520][ T206] Call Trace: [ 65.932803][ T206] dump_stack+0x107/0x163 [ 65.937122][ T206] __lock_acquire.cold+0x310/0x3a2 [ 65.942228][ T206] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 65.948198][ T206] lock_acquire+0x2a3/0x8c0 [ 65.952690][ T206] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 65.958655][ T206] ? lock_release+0x710/0x710 [ 65.963327][ T206] __mutex_lock+0x134/0x1110 [ 65.967908][ T206] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 65.973978][ T206] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 65.979947][ T206] ? mutex_lock_io_nested+0xf60/0xf60 [ 65.985308][ T206] ? ieee80211_clear_fast_rx+0x58/0x80 [ 65.990754][ T206] ? mark_held_locks+0x9f/0xe0 [ 65.995528][ T206] ieee80211_recalc_min_chandef+0x49/0x140 [ 66.001327][ T206] sta_info_move_state+0x3cf/0x8d0 [ 66.006432][ T206] sta_info_free+0x65/0x3b0 [ 66.010953][ T206] sta_info_insert_rcu+0x303/0x2ba0 [ 66.016154][ T206] ? find_held_lock+0x2d/0x110 [ 66.020912][ T206] ? rate_control_rate_init+0x32c/0x6a0 [ 66.026461][ T206] ? sta_info_free+0x3b0/0x3b0 [ 66.031228][ T206] ? __local_bh_enable_ip+0x9c/0x110 [ 66.036563][ T206] ? rate_control_rate_init+0x35f/0x6a0 [ 66.042632][ T206] ieee80211_ibss_finish_sta+0x212/0x390 [ 66.048262][ T206] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 66.054320][ T206] ? __local_bh_enable_ip+0x9c/0x110 [ 66.059597][ T206] ieee80211_ibss_work+0x2c7/0xe80 [ 66.064704][ T206] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 66.071024][ T206] ? mark_held_locks+0x9f/0xe0 [ 66.075780][ T206] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 66.081574][ T206] ? lockdep_hardirqs_on+0x79/0x100 [ 66.086761][ T206] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 66.092556][ T206] ieee80211_iface_work+0x91f/0xa90 [ 66.097745][ T206] process_one_work+0x933/0x15a0 [ 66.102687][ T206] ? lock_release+0x710/0x710 [ 66.107362][ T206] ? pwq_dec_nr_in_flight+0x320/0x320 [ 66.112725][ T206] ? rwlock_bug.part.0+0x90/0x90 [ 66.117669][ T206] ? _raw_spin_lock_irq+0x41/0x50 [ 66.122683][ T206] worker_thread+0x64c/0x1120 [ 66.127354][ T206] ? process_one_work+0x15a0/0x15a0 [ 66.132543][ T206] kthread+0x3af/0x4a0 [ 66.136619][ T206] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 66.142500][ T206] ret_from_fork+0x1f/0x30 [ 66.157002][ T7] Bluetooth: hci0: command 0x0409 tx timeout [ 66.325217][ T27] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.410986][ T27] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.479338][ T27] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 66.561696][ T27] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.727721][ T27] device hsr_slave_0 left promiscuous mode [ 67.741054][ T27] device hsr_slave_1 left promiscuous mode [ 67.752165][ T27] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 67.760355][ T27] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 67.769573][ T27] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 67.777875][ T27] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 67.785943][ T27] device bridge_slave_1 left promiscuous mode [ 67.793587][ T27] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.802264][ T27] device bridge_slave_0 left promiscuous mode [ 67.809420][ T27] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.820042][ T27] device veth1_macvtap left promiscuous mode [ 67.826037][ T27] device veth0_macvtap left promiscuous mode [ 67.833485][ T27] device veth1_vlan left promiscuous mode [ 67.840033][ T27] device veth0_vlan left promiscuous mode executing program [ 68.849056][ T27] team0 (unregistering): Port device team_slave_1 removed [ 68.859089][ T27] team0 (unregistering): Port device team_slave_0 removed [ 68.871268][ T27] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 68.882201][ T27] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 68.909496][ T27] bond0 (unregistering): Released all slaves [ 68.980094][ T8464] can: request_module (can-proto-0) failed. [ 69.369909][ T8464] can: request_module (can-proto-0) failed. [ 69.379910][ T8464] can: request_module (can-proto-0) failed. [ 69.517903][ T8464] base_sock_release(00000000e737785e) sk=000000004f66d5e9