[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty2. [ 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 '10.128.1.1' (ECDSA) to the list of known hosts. 2020/11/06 22:59:49 fuzzer started 2020/11/06 22:59:49 connecting to host at 10.128.0.26:34759 2020/11/06 22:59:49 checking machine... 2020/11/06 22:59:49 checking revisions... 2020/11/06 22:59:49 testing simple program... syzkaller login: [ 66.672789][ T8535] IPVS: ftp: loaded support on port[0] = 21 [ 66.807548][ T8535] chnl_net:caif_netlink_parms(): no params data found [ 66.858289][ T8535] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.866971][ T8535] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.875952][ T8535] device bridge_slave_0 entered promiscuous mode [ 66.885301][ T8535] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.893226][ T8535] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.902217][ T8535] device bridge_slave_1 entered promiscuous mode [ 66.923425][ T8535] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.934534][ T8535] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.957783][ T8535] team0: Port device team_slave_0 added [ 66.965168][ T8535] team0: Port device team_slave_1 added [ 66.982964][ T8535] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.990057][ T8535] 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. [ 67.016804][ T8535] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.030122][ T8535] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.037079][ T8535] 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. [ 67.063836][ T8535] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.090983][ T8535] device hsr_slave_0 entered promiscuous mode [ 67.097778][ T8535] device hsr_slave_1 entered promiscuous mode [ 67.195958][ T8535] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.206040][ T8535] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.216545][ T8535] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.227373][ T8535] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.252707][ T8535] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.259953][ T8535] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.267648][ T8535] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.274794][ T8535] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.324870][ T8535] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.337980][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.350668][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.359113][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.368524][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 67.381951][ T8535] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.395673][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.404319][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.411451][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.431575][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.440913][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.448054][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.470513][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.479040][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.489284][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.498075][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.508446][ T8535] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.518057][ T3126] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.542183][ T8535] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.553290][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.561004][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.581749][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 67.602398][ T3126] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 67.611919][ T3126] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 67.621201][ T3126] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 67.633226][ T8535] device veth0_vlan entered promiscuous mode [ 67.645616][ T8535] device veth1_vlan entered promiscuous mode [ 67.670462][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 67.678677][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 67.689379][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 67.701618][ T8535] device veth0_macvtap entered promiscuous mode [ 67.711886][ T8535] device veth1_macvtap entered promiscuous mode [ 67.730989][ T8535] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.738429][ T3126] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.749254][ T3126] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.761901][ T8535] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.770687][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.784227][ T8535] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.793359][ T8535] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.802406][ T8535] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.811267][ T8535] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.902765][ T392] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.912101][ T392] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.935691][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.956555][ T8] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.966657][ T8] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.977318][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.990983][ T392] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 68.002373][ T392] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 392, name: kworker/u4:7 [ 68.013112][ T392] 4 locks held by kworker/u4:7/392: [ 68.018334][ T392] #0: ffff88801c08a138 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 68.029376][ T392] #1: ffffc90001c1fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 68.041267][ T392] #2: ffff88801d018d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 68.050944][ T392] #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 68.061662][ T392] Preemption disabled at: [ 68.061683][ T392] [] __mutex_lock+0x10f/0x10e0 [ 68.072644][ T392] CPU: 0 PID: 392 Comm: kworker/u4:7 Not tainted 5.10.0-rc2-syzkaller #0 [ 68.081058][ T392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.091108][ T392] Workqueue: phy4 ieee80211_iface_work [ 68.096549][ T392] Call Trace: [ 68.099841][ T392] dump_stack+0x107/0x163 [ 68.104151][ T392] ? __mutex_lock+0x10f/0x10e0 [ 68.108892][ T392] ___might_sleep.cold+0x1e8/0x22e [ 68.113989][ T392] sta_info_move_state+0x32/0x8d0 [ 68.118998][ T392] sta_info_free+0x65/0x3b0 [ 68.123501][ T392] sta_info_insert_rcu+0x303/0x2ba0 [ 68.128681][ T392] ? find_held_lock+0x2d/0x110 [ 68.133430][ T392] ? rate_control_rate_init+0x32c/0x6a0 [ 68.138959][ T392] ? sta_info_free+0x3b0/0x3b0 [ 68.143705][ T392] ? __local_bh_enable_ip+0x9c/0x110 [ 68.148991][ T392] ? rate_control_rate_init+0x35f/0x6a0 [ 68.154524][ T392] ieee80211_ibss_finish_sta+0x212/0x390 [ 68.160155][ T392] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 68.166208][ T392] ? __local_bh_enable_ip+0x9c/0x110 [ 68.171477][ T392] ieee80211_ibss_work+0x2c7/0xe80 [ 68.176586][ T392] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 68.182910][ T392] ? mark_held_locks+0x9f/0xe0 [ 68.187656][ T392] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 68.193442][ T392] ? lockdep_hardirqs_on+0x79/0x100 [ 68.198622][ T392] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 68.204425][ T392] ieee80211_iface_work+0x82e/0x970 [ 68.209608][ T392] process_one_work+0x933/0x15a0 [ 68.214532][ T392] ? lock_release+0x710/0x710 [ 68.219208][ T392] ? pwq_dec_nr_in_flight+0x320/0x320 [ 68.224617][ T392] ? rwlock_bug.part.0+0x90/0x90 [ 68.229537][ T392] ? _raw_spin_lock_irq+0x41/0x50 [ 68.234551][ T392] worker_thread+0x64c/0x1120 [ 68.239221][ T392] ? process_one_work+0x15a0/0x15a0 [ 68.244404][ T392] kthread+0x3af/0x4a0 [ 68.248452][ T392] ? kthread_create_worker_on_cpu+0xf0/0xf0 executing program [ 68.254328][ T392] ret_from_fork+0x1f/0x30 [ 68.262604][ T392] [ 68.264942][ T392] ============================= [ 68.269778][ T392] [ BUG: Invalid wait context ] [ 68.274615][ T392] 5.10.0-rc2-syzkaller #0 Tainted: G W [ 68.281345][ T392] ----------------------------- [ 68.286164][ T392] kworker/u4:7/392 is trying to lock: [ 68.291504][ T392] ffff8880278029d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 [ 68.302076][ T392] other info that might help us debug this: [ 68.307948][ T392] context-{4:4} [ 68.311378][ T392] 4 locks held by kworker/u4:7/392: [ 68.316557][ T392] #0: ffff88801c08a138 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 68.326695][ T392] #1: ffffc90001c1fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 68.337876][ T392] #2: ffff88801d018d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 68.347320][ T392] #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 68.357209][ T392] stack backtrace: [ 68.360920][ T392] CPU: 0 PID: 392 Comm: kworker/u4:7 Tainted: G W 5.10.0-rc2-syzkaller #0 [ 68.370700][ T392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.380743][ T392] Workqueue: phy4 ieee80211_iface_work [ 68.386174][ T392] Call Trace: [ 68.389444][ T392] dump_stack+0x107/0x163 [ 68.393752][ T392] __lock_acquire.cold+0x310/0x3a2 [ 68.398856][ T392] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 68.404808][ T392] ? find_held_lock+0x2d/0x110 [ 68.409561][ T392] lock_acquire+0x2a3/0x8c0 [ 68.414040][ T392] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 68.419993][ T392] ? lock_release+0x710/0x710 [ 68.424646][ T392] __mutex_lock+0x134/0x10e0 [ 68.429223][ T392] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 68.435179][ T392] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 68.441134][ T392] ? mutex_lock_io_nested+0xf60/0xf60 [ 68.446481][ T392] ? ieee80211_clear_fast_rx+0x58/0x80 [ 68.451917][ T392] ? mark_held_locks+0x9f/0xe0 [ 68.456674][ T392] ieee80211_recalc_min_chandef+0x49/0x140 [ 68.462455][ T392] sta_info_move_state+0x3cf/0x8d0 [ 68.467540][ T392] sta_info_free+0x65/0x3b0 [ 68.472021][ T392] sta_info_insert_rcu+0x303/0x2ba0 [ 68.477192][ T392] ? find_held_lock+0x2d/0x110 [ 68.481946][ T392] ? rate_control_rate_init+0x32c/0x6a0 [ 68.487465][ T392] ? sta_info_free+0x3b0/0x3b0 [ 68.492204][ T392] ? __local_bh_enable_ip+0x9c/0x110 [ 68.497461][ T392] ? rate_control_rate_init+0x35f/0x6a0 [ 68.502981][ T392] ieee80211_ibss_finish_sta+0x212/0x390 [ 68.508603][ T392] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 68.514664][ T392] ? __local_bh_enable_ip+0x9c/0x110 [ 68.519940][ T392] ieee80211_ibss_work+0x2c7/0xe80 [ 68.525094][ T392] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 68.531400][ T392] ? mark_held_locks+0x9f/0xe0 [ 68.536149][ T392] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 68.542030][ T392] ? lockdep_hardirqs_on+0x79/0x100 [ 68.547206][ T392] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 68.553002][ T392] ieee80211_iface_work+0x82e/0x970 [ 68.558189][ T392] process_one_work+0x933/0x15a0 [ 68.563103][ T392] ? lock_release+0x710/0x710 [ 68.567765][ T392] ? pwq_dec_nr_in_flight+0x320/0x320 [ 68.573110][ T392] ? rwlock_bug.part.0+0x90/0x90 [ 68.578017][ T392] ? _raw_spin_lock_irq+0x41/0x50 [ 68.583014][ T392] worker_thread+0x64c/0x1120 [ 68.587666][ T392] ? process_one_work+0x15a0/0x15a0 [ 68.592888][ T392] kthread+0x3af/0x4a0 [ 68.596937][ T392] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 68.602806][ T392] ret_from_fork+0x1f/0x30 2020/11/06 22:59:53 building call list... [ 68.639670][ T7] Bluetooth: hci0: command 0x0409 tx timeout [ 68.905817][ T8] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.008115][ T8] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.093971][ T8] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 69.174437][ T8] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 70.414849][ T8] device hsr_slave_0 left promiscuous mode [ 70.422023][ T8] device hsr_slave_1 left promiscuous mode [ 70.430195][ T8] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 70.437631][ T8] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 70.446869][ T8] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 70.455735][ T8] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 70.465026][ T8] device bridge_slave_1 left promiscuous mode [ 70.472111][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.481328][ T8] device bridge_slave_0 left promiscuous mode [ 70.487522][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.498945][ T8] device veth1_macvtap left promiscuous mode [ 70.505982][ T8] device veth0_macvtap left promiscuous mode [ 70.512901][ T8] device veth1_vlan left promiscuous mode [ 70.518678][ T8] device veth0_vlan left promiscuous mode executing program [ 71.658621][ T8] team0 (unregistering): Port device team_slave_1 removed [ 71.668909][ T8] team0 (unregistering): Port device team_slave_0 removed [ 71.679672][ T8] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 71.690999][ T8] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 71.719297][ T8] bond0 (unregistering): Released all slaves [ 71.916139][ T8507] can: request_module (can-proto-0) failed. [ 72.191822][ T8507] can: request_module (can-proto-0) failed. [ 72.202294][ T8507] can: request_module (can-proto-0) failed. [ 72.342439][ T8507] base_sock_release(000000000d9b418b) sk=0000000083a16152