[ 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 '10.128.1.59' (ECDSA) to the list of known hosts. 2020/11/05 13:50:33 fuzzer started 2020/11/05 13:50:33 connecting to host at 10.128.0.26:43151 2020/11/05 13:50:33 checking machine... 2020/11/05 13:50:33 checking revisions... 2020/11/05 13:50:33 testing simple program... syzkaller login: [ 67.169533][ T8498] IPVS: ftp: loaded support on port[0] = 21 [ 67.351599][ T8498] chnl_net:caif_netlink_parms(): no params data found [ 67.408766][ T8498] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.416768][ T8498] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.431143][ T8498] device bridge_slave_0 entered promiscuous mode [ 67.441921][ T8498] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.449448][ T8498] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.457785][ T8498] device bridge_slave_1 entered promiscuous mode [ 67.480737][ T8498] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.496911][ T8498] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.522971][ T8498] team0: Port device team_slave_0 added [ 67.531020][ T8498] team0: Port device team_slave_1 added [ 67.550971][ T8498] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.559003][ T8498] 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. [ 67.590079][ T8498] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.604083][ T8498] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.612394][ T8498] 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. [ 67.640049][ T8498] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.669516][ T8498] device hsr_slave_0 entered promiscuous mode [ 67.676860][ T8498] device hsr_slave_1 entered promiscuous mode [ 67.780653][ T8498] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.792479][ T8498] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.803577][ T8498] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.815979][ T8498] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.842337][ T8498] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.850182][ T8498] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.858305][ T8498] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.865723][ T8498] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.914837][ T8498] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.931092][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.943190][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.953307][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.961654][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 67.975642][ T8498] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.989414][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.999073][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.006398][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.030847][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.040076][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.047425][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.056835][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.068961][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.088589][ T8498] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 68.101239][ T8498] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 68.114532][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.124354][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.134542][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.144537][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.163255][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.171219][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.187193][ T8498] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.208872][ T3125] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.230209][ T4091] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.240687][ T4091] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.249572][ T4091] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.261609][ T8498] device veth0_vlan entered promiscuous mode [ 68.274969][ T8498] device veth1_vlan entered promiscuous mode [ 68.297901][ T3125] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.309360][ T3125] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.318147][ T3125] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.330485][ T8498] device veth0_macvtap entered promiscuous mode [ 68.343754][ T8498] device veth1_macvtap entered promiscuous mode [ 68.363258][ T8498] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.371813][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.383206][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.399729][ T8498] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.409181][ T4091] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.419393][ T4091] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.430410][ T8498] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.440546][ T8498] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.449913][ T8498] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.459663][ T8498] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.546713][ T536] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.562022][ T536] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.586620][ T4091] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 68.610066][ T536] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 68.624260][ T536] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 68.634459][ T8717] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 68.672872][ T536] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 68.688649][ T536] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 536, name: kworker/u4:5 [ 68.699454][ T536] 4 locks held by kworker/u4:5/536: [ 68.704794][ T536] #0: ffff88801b08a938 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 executing program 2020/11/05 13:50:36 building call list... [ 68.726410][ T536] #1: ffffc9000294fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 68.739115][ T536] #2: ffff88801bc98d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 68.749748][ T536] #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 68.797988][ T536] Preemption disabled at: [ 68.798025][ T536] [] __mutex_lock+0x10f/0x10e0 [ 68.822727][ T536] CPU: 1 PID: 536 Comm: kworker/u4:5 Not tainted 5.10.0-rc1-syzkaller #0 [ 68.831203][ T536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.841537][ T536] Workqueue: phy3 ieee80211_iface_work [ 68.847043][ T536] Call Trace: [ 68.850357][ T536] dump_stack+0x107/0x163 [ 68.854707][ T536] ? __mutex_lock+0x10f/0x10e0 [ 68.859498][ T536] ___might_sleep.cold+0x1e8/0x22e [ 68.864867][ T536] sta_info_move_state+0x32/0x8d0 [ 68.869987][ T536] sta_info_free+0x65/0x3b0 [ 68.875009][ T536] sta_info_insert_rcu+0x303/0x2ba0 [ 68.880404][ T536] ? find_held_lock+0x2d/0x110 [ 68.885221][ T536] ? rate_control_rate_init+0x32c/0x6a0 [ 68.890986][ T536] ? sta_info_free+0x3b0/0x3b0 [ 68.896099][ T536] ? __local_bh_enable_ip+0x9c/0x110 [ 68.901600][ T536] ? rate_control_rate_init+0x35f/0x6a0 [ 68.907195][ T536] ieee80211_ibss_finish_sta+0x212/0x390 [ 68.912992][ T536] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 68.919658][ T536] ? __local_bh_enable_ip+0x9c/0x110 [ 68.925182][ T536] ieee80211_ibss_work+0x2c7/0xe80 [ 68.930324][ T536] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 68.936676][ T536] ? mark_held_locks+0x9f/0xe0 [ 68.941596][ T536] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 68.947622][ T536] ? lockdep_hardirqs_on+0x85/0x110 [ 68.952836][ T536] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 68.958775][ T536] ieee80211_iface_work+0x82e/0x970 [ 68.964097][ T536] process_one_work+0x933/0x15a0 [ 68.969067][ T536] ? lock_release+0x710/0x710 [ 68.974002][ T536] ? pwq_dec_nr_in_flight+0x320/0x320 [ 68.979536][ T536] ? rwlock_bug.part.0+0x90/0x90 [ 68.984506][ T536] ? _raw_spin_lock_irq+0x41/0x50 [ 68.989697][ T536] worker_thread+0x64c/0x1120 [ 68.994567][ T536] ? __kthread_parkme+0x13f/0x1e0 [ 68.999709][ T536] ? process_one_work+0x15a0/0x15a0 [ 69.004948][ T536] kthread+0x3af/0x4a0 [ 69.009053][ T536] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 69.014973][ T536] ret_from_fork+0x1f/0x30 [ 69.028679][ T536] [ 69.031149][ T536] ============================= [ 69.036136][ T536] [ BUG: Invalid wait context ] [ 69.041082][ T536] 5.10.0-rc1-syzkaller #0 Tainted: G W [ 69.048132][ T536] ----------------------------- [ 69.053071][ T536] kworker/u4:5/536 is trying to lock: [ 69.059143][ T536] ffff888019d729d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 [ 69.069895][ T536] other info that might help us debug this: [ 69.076212][ T536] context-{4:4} [ 69.079683][ T536] 4 locks held by kworker/u4:5/536: [ 69.084967][ T536] #0: ffff88801b08a938 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 69.095526][ T536] #1: ffffc9000294fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 69.106854][ T536] #2: ffff88801bc98d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 69.116672][ T536] #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 69.126812][ T536] stack backtrace: [ 69.130552][ T536] CPU: 1 PID: 536 Comm: kworker/u4:5 Tainted: G W 5.10.0-rc1-syzkaller #0 [ 69.141228][ T536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.151385][ T536] Workqueue: phy3 ieee80211_iface_work [ 69.156932][ T536] Call Trace: [ 69.160227][ T536] dump_stack+0x107/0x163 [ 69.164634][ T536] __lock_acquire.cold+0x310/0x3a2 [ 69.169766][ T536] ? debug_mutex_unlock+0x173/0x250 [ 69.174975][ T536] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 69.181023][ T536] lock_acquire+0x1af/0x8b0 [ 69.185646][ T536] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 69.191642][ T536] ? lock_release+0x710/0x710 [ 69.196512][ T536] __mutex_lock+0x134/0x10e0 [ 69.201112][ T536] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 69.207325][ T536] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 69.213432][ T536] ? mutex_lock_io_nested+0xf60/0xf60 [ 69.218842][ T536] ? ieee80211_clear_fast_rx+0x58/0x80 [ 69.224340][ T536] ? mark_held_locks+0x9f/0xe0 [ 69.229635][ T536] ieee80211_recalc_min_chandef+0x49/0x140 [ 69.235715][ T536] sta_info_move_state+0x3cf/0x8d0 [ 69.240841][ T536] sta_info_free+0x65/0x3b0 [ 69.245999][ T536] sta_info_insert_rcu+0x303/0x2ba0 [ 69.251200][ T536] ? find_held_lock+0x2d/0x110 [ 69.255980][ T536] ? rate_control_rate_init+0x32c/0x6a0 [ 69.261532][ T536] ? sta_info_free+0x3b0/0x3b0 [ 69.266296][ T536] ? __local_bh_enable_ip+0x9c/0x110 [ 69.271584][ T536] ? rate_control_rate_init+0x35f/0x6a0 [ 69.277134][ T536] ieee80211_ibss_finish_sta+0x212/0x390 [ 69.282767][ T536] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 69.288993][ T536] ? __local_bh_enable_ip+0x9c/0x110 [ 69.294282][ T536] ieee80211_ibss_work+0x2c7/0xe80 [ 69.299400][ T536] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 69.305730][ T536] ? mark_held_locks+0x9f/0xe0 [ 69.310497][ T536] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 69.316444][ T536] ? lockdep_hardirqs_on+0x85/0x110 [ 69.321646][ T536] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 69.327457][ T536] ieee80211_iface_work+0x82e/0x970 [ 69.332790][ T536] process_one_work+0x933/0x15a0 [ 69.337733][ T536] ? lock_release+0x710/0x710 [ 69.342631][ T536] ? pwq_dec_nr_in_flight+0x320/0x320 [ 69.348089][ T536] ? rwlock_bug.part.0+0x90/0x90 [ 69.353125][ T536] ? _raw_spin_lock_irq+0x41/0x50 [ 69.358399][ T536] worker_thread+0x64c/0x1120 [ 69.363093][ T536] ? __kthread_parkme+0x13f/0x1e0 [ 69.368241][ T536] ? process_one_work+0x15a0/0x15a0 [ 69.373444][ T536] kthread+0x3af/0x4a0 [ 69.377611][ T536] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 69.383776][ T536] ret_from_fork+0x1f/0x30 [ 69.399483][ T8717] Bluetooth: hci0: command 0x0409 tx timeout [ 69.570360][ T21] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.674024][ T21] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.762742][ T21] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.853506][ T21] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 71.003621][ T21] device hsr_slave_0 left promiscuous mode [ 71.018182][ T21] device hsr_slave_1 left promiscuous mode [ 71.024646][ T21] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 71.033013][ T21] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 71.041529][ T21] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 71.050909][ T21] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 71.059430][ T21] device bridge_slave_1 left promiscuous mode [ 71.065784][ T21] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.075234][ T21] device bridge_slave_0 left promiscuous mode [ 71.082117][ T21] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.093653][ T21] device veth1_macvtap left promiscuous mode [ 71.099993][ T21] device veth0_macvtap left promiscuous mode [ 71.106350][ T21] device veth1_vlan left promiscuous mode [ 71.114049][ T21] device veth0_vlan left promiscuous mode executing program [ 72.088787][ T21] team0 (unregistering): Port device team_slave_1 removed [ 72.099419][ T21] team0 (unregistering): Port device team_slave_0 removed [ 72.110848][ T21] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 72.122820][ T21] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 72.150277][ T21] bond0 (unregistering): Released all slaves [ 72.278307][ T8494] can: request_module (can-proto-0) failed. [ 72.637772][ T8494] can: request_module (can-proto-0) failed. [ 72.648485][ T8494] can: request_module (can-proto-0) failed. [ 72.802237][ T8494] base_sock_release(00000000f74babb7) sk=000000005cbade6c