[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.192' (ECDSA) to the list of known hosts. 2020/11/17 01:08:53 fuzzer started 2020/11/17 01:08:54 connecting to host at 10.128.0.26:35509 2020/11/17 01:08:54 checking machine... 2020/11/17 01:08:54 checking revisions... 2020/11/17 01:08:54 testing simple program... syzkaller login: [ 65.147747][ T8522] IPVS: ftp: loaded support on port[0] = 21 [ 65.285501][ T8522] chnl_net:caif_netlink_parms(): no params data found [ 65.339374][ T8522] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.347700][ T8522] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.356539][ T8522] device bridge_slave_0 entered promiscuous mode [ 65.367087][ T8522] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.374562][ T8522] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.382410][ T8522] device bridge_slave_1 entered promiscuous mode [ 65.403800][ T8522] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.414835][ T8522] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.438481][ T8522] team0: Port device team_slave_0 added [ 65.446335][ T8522] team0: Port device team_slave_1 added [ 65.464257][ T8522] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 65.471214][ T8522] 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. [ 65.497783][ T8522] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 65.511018][ T8522] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 65.519582][ T8522] 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. [ 65.546261][ T8522] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 65.573126][ T8522] device hsr_slave_0 entered promiscuous mode [ 65.579956][ T8522] device hsr_slave_1 entered promiscuous mode [ 65.684133][ T8522] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.696392][ T8522] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.706439][ T8522] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.717300][ T8522] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.746102][ T8522] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.753328][ T8522] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.761228][ T8522] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.768405][ T8522] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.816540][ T8522] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.829753][ T3190] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.841724][ T3190] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.850895][ T3190] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.859870][ T3190] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 65.874322][ T8522] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.886523][ T3190] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.896041][ T3190] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.903342][ T3190] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.925239][ T3190] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.935550][ T3190] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.942714][ T3190] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.951346][ T3190] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.962375][ T8731] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.980032][ T8522] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 65.991548][ T8522] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.007599][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.016967][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.026593][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.037011][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.052981][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.060399][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.075000][ T8522] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.095599][ T2999] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.117746][ T8522] device veth0_vlan entered promiscuous mode [ 66.124863][ T2999] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.135045][ T2999] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.144839][ T2999] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.159206][ T8522] device veth1_vlan entered promiscuous mode [ 66.184063][ T2999] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.192180][ T2999] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.201494][ T2999] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.213842][ T8522] device veth0_macvtap entered promiscuous mode [ 66.226602][ T8522] device veth1_macvtap entered promiscuous mode [ 66.246010][ T8522] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.254854][ T2999] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.264826][ T2999] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.277615][ T8522] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.285564][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.294440][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.307798][ T8522] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.317219][ T8522] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.328190][ T8522] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.337060][ T8522] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.427290][ T242] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.441993][ T242] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.481607][ T124] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.481775][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.491874][ T124] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.506706][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 66.556270][ T533] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 66.577061][ T533] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 533, name: kworker/u4:5 [ 66.589266][ T533] 4 locks held by kworker/u4:5/533: [ 66.595175][ T533] #0: ffff88801a2ab938 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 2020/11/17 01:08:57 building call list... [ 66.623788][ T533] #1: ffffc900016efda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 66.658920][ T533] #2: ffff88801b214d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 executing program [ 66.685894][ T533] #3: ffffffff8b337820 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 66.724263][ T533] Preemption disabled at: [ 66.724295][ T533] [] __mutex_lock+0x10f/0x10e0 [ 66.755010][ T533] CPU: 0 PID: 533 Comm: kworker/u4:5 Not tainted 5.10.0-rc4-syzkaller #0 [ 66.763469][ T533] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.773552][ T533] Workqueue: phy3 ieee80211_iface_work [ 66.779018][ T533] Call Trace: [ 66.782345][ T533] dump_stack+0x107/0x163 [ 66.786696][ T533] ? __mutex_lock+0x10f/0x10e0 [ 66.791469][ T533] ___might_sleep.cold+0x1e8/0x22e [ 66.796593][ T533] sta_info_move_state+0x32/0x8d0 [ 66.801633][ T533] sta_info_free+0x65/0x3b0 [ 66.806146][ T533] sta_info_insert_rcu+0x303/0x2ba0 [ 66.811360][ T533] ? find_held_lock+0x2d/0x110 [ 66.816135][ T533] ? rate_control_rate_init+0x32c/0x6a0 [ 66.821718][ T533] ? sta_info_free+0x3b0/0x3b0 [ 66.826602][ T533] ? __local_bh_enable_ip+0x9c/0x110 [ 66.831928][ T533] ? rate_control_rate_init+0x35f/0x6a0 [ 66.837512][ T533] ieee80211_ibss_finish_sta+0x212/0x390 [ 66.843155][ T533] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 66.849233][ T533] ? __local_bh_enable_ip+0x9c/0x110 [ 66.854538][ T533] ieee80211_ibss_work+0x2c7/0xe80 [ 66.859666][ T533] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 66.866017][ T533] ? mark_held_locks+0x9f/0xe0 [ 66.870887][ T533] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 66.876704][ T533] ? lockdep_hardirqs_on+0x79/0x100 [ 66.881917][ T533] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 66.887754][ T533] ieee80211_iface_work+0x82e/0x970 [ 66.893401][ T533] process_one_work+0x933/0x15a0 [ 66.898355][ T533] ? lock_release+0x710/0x710 [ 66.903058][ T533] ? pwq_dec_nr_in_flight+0x320/0x320 [ 66.908458][ T533] ? rwlock_bug.part.0+0x90/0x90 [ 66.913413][ T533] ? _raw_spin_lock_irq+0x41/0x50 [ 66.918455][ T533] worker_thread+0x64c/0x1120 [ 66.923262][ T533] ? __kthread_parkme+0x13f/0x1e0 [ 66.928305][ T533] ? process_one_work+0x15a0/0x15a0 [ 66.933517][ T533] kthread+0x3af/0x4a0 [ 66.937592][ T533] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 66.943493][ T533] ret_from_fork+0x1f/0x30 [ 66.955499][ T533] [ 66.957847][ T533] ============================= [ 66.962688][ T533] [ BUG: Invalid wait context ] [ 66.967530][ T533] 5.10.0-rc4-syzkaller #0 Tainted: G W [ 66.974281][ T533] ----------------------------- [ 66.979124][ T533] kworker/u4:5/533 is trying to lock: [ 66.984483][ T533] ffff8880284da9d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 [ 66.995174][ T533] other info that might help us debug this: [ 67.001084][ T533] context-{4:4} [ 67.004541][ T533] 4 locks held by kworker/u4:5/533: [ 67.009719][ T533] #0: ffff88801a2ab938 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 67.019895][ T533] #1: ffffc900016efda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 67.031146][ T533] #2: ffff88801b214d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 67.040652][ T533] #3: ffffffff8b337820 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 67.050564][ T533] stack backtrace: [ 67.054281][ T533] CPU: 0 PID: 533 Comm: kworker/u4:5 Tainted: G W 5.10.0-rc4-syzkaller #0 [ 67.064078][ T533] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.074142][ T533] Workqueue: phy3 ieee80211_iface_work [ 67.079601][ T533] Call Trace: [ 67.082893][ T533] dump_stack+0x107/0x163 [ 67.087247][ T533] __lock_acquire.cold+0x1d6/0x39f [ 67.092382][ T533] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 67.098380][ T533] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 67.104366][ T533] lock_acquire+0x2a3/0x8c0 [ 67.108878][ T533] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 67.114890][ T533] ? lock_release+0x710/0x710 [ 67.119569][ T533] __mutex_lock+0x134/0x10e0 [ 67.124173][ T533] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 67.130158][ T533] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 67.136136][ T533] ? mutex_lock_io_nested+0xf60/0xf60 [ 67.141517][ T533] ? ieee80211_clear_fast_rx+0x58/0x80 [ 67.147146][ T533] ? mark_held_locks+0x9f/0xe0 [ 67.151933][ T533] ieee80211_recalc_min_chandef+0x49/0x140 [ 67.157739][ T533] sta_info_move_state+0x3cf/0x8d0 [ 67.162849][ T533] sta_info_free+0x65/0x3b0 [ 67.167359][ T533] sta_info_insert_rcu+0x303/0x2ba0 [ 67.172558][ T533] ? find_held_lock+0x2d/0x110 [ 67.177325][ T533] ? rate_control_rate_init+0x32c/0x6a0 [ 67.182869][ T533] ? sta_info_free+0x3b0/0x3b0 [ 67.187636][ T533] ? __local_bh_enable_ip+0x9c/0x110 [ 67.192921][ T533] ? rate_control_rate_init+0x35f/0x6a0 [ 67.198460][ T533] ieee80211_ibss_finish_sta+0x212/0x390 [ 67.204087][ T533] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 67.210190][ T533] ? __local_bh_enable_ip+0x9c/0x110 [ 67.215473][ T533] ieee80211_ibss_work+0x2c7/0xe80 [ 67.220584][ T533] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 67.226910][ T533] ? mark_held_locks+0x9f/0xe0 [ 67.231789][ T533] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 67.237598][ T533] ? lockdep_hardirqs_on+0x79/0x100 [ 67.242830][ T533] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 67.248722][ T533] ieee80211_iface_work+0x82e/0x970 [ 67.254094][ T533] process_one_work+0x933/0x15a0 [ 67.259026][ T533] ? lock_release+0x710/0x710 [ 67.263793][ T533] ? pwq_dec_nr_in_flight+0x320/0x320 [ 67.269268][ T533] ? rwlock_bug.part.0+0x90/0x90 [ 67.274208][ T533] ? _raw_spin_lock_irq+0x41/0x50 [ 67.279231][ T533] worker_thread+0x64c/0x1120 [ 67.283906][ T533] ? __kthread_parkme+0x13f/0x1e0 [ 67.288929][ T533] ? process_one_work+0x15a0/0x15a0 [ 67.294130][ T533] kthread+0x3af/0x4a0 [ 67.298199][ T533] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 67.304112][ T533] ret_from_fork+0x1f/0x30 [ 67.313336][ T8731] Bluetooth: hci0: command 0x0409 tx timeout [ 67.508770][ T533] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.601181][ T533] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.698060][ T533] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 67.789608][ T533] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.007678][ T533] device hsr_slave_0 left promiscuous mode [ 69.014759][ T533] device hsr_slave_1 left promiscuous mode [ 69.021233][ T533] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 69.029152][ T533] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 69.037617][ T533] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 69.046804][ T533] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 69.055241][ T533] device bridge_slave_1 left promiscuous mode [ 69.061508][ T533] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.070787][ T533] device bridge_slave_0 left promiscuous mode [ 69.077694][ T533] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.089316][ T533] device veth1_macvtap left promiscuous mode [ 69.095772][ T533] device veth0_macvtap left promiscuous mode [ 69.101891][ T533] device veth1_vlan left promiscuous mode [ 69.108253][ T533] device veth0_vlan left promiscuous mode executing program [ 69.986820][ T533] team0 (unregistering): Port device team_slave_1 removed [ 69.997906][ T533] team0 (unregistering): Port device team_slave_0 removed [ 70.008455][ T533] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 70.019530][ T533] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 70.046302][ T533] bond0 (unregistering): Released all slaves [ 70.110204][ T8508] can: request_module (can-proto-0) failed. [ 70.496397][ T8508] can: request_module (can-proto-0) failed. [ 70.506223][ T8508] can: request_module (can-proto-0) failed. [ 70.653631][ T8508] base_sock_release(00000000d8613f38) sk=00000000ee25e1cc