[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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 '10.128.1.20' (ECDSA) to the list of known hosts. 2020/11/13 14:52:22 fuzzer started 2020/11/13 14:52:22 connecting to host at 10.128.0.26:45631 2020/11/13 14:52:22 checking machine... 2020/11/13 14:52:22 checking revisions... 2020/11/13 14:52:22 testing simple program... syzkaller login: [ 66.171464][ T8539] IPVS: ftp: loaded support on port[0] = 21 [ 66.325830][ T8539] chnl_net:caif_netlink_parms(): no params data found [ 66.389186][ T8539] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.397265][ T8539] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.406684][ T8539] device bridge_slave_0 entered promiscuous mode [ 66.417479][ T8539] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.424597][ T8539] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.434710][ T8539] device bridge_slave_1 entered promiscuous mode [ 66.456937][ T8539] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.468885][ T8539] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.491297][ T8539] team0: Port device team_slave_0 added [ 66.498508][ T8539] team0: Port device team_slave_1 added [ 66.516864][ T8539] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.523913][ T8539] 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. [ 66.550937][ T8539] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.563909][ T8539] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.571289][ T8539] 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. [ 66.598546][ T8539] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.625908][ T8539] device hsr_slave_0 entered promiscuous mode [ 66.632613][ T8539] device hsr_slave_1 entered promiscuous mode [ 66.730201][ T8539] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.741383][ T8539] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.751688][ T8539] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.761882][ T8539] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.787665][ T8539] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.794813][ T8539] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.802883][ T8539] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.811668][ T8539] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.859881][ T8539] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.874632][ T55] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.886272][ T55] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.894811][ T55] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.904255][ T55] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 66.917661][ T8539] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.930364][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.939574][ T3157] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.946740][ T3157] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.967212][ T55] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.976185][ T55] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.983241][ T55] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.991980][ T55] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.001559][ T55] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.016771][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.026276][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.042461][ T8539] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 67.054668][ T8539] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.064057][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.086160][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.093617][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.107944][ T8539] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.128822][ T55] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 67.150930][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 67.159538][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 67.168547][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 67.179769][ T8539] device veth0_vlan entered promiscuous mode [ 67.192154][ T8539] device veth1_vlan entered promiscuous mode [ 67.217248][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 67.226217][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 67.234855][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 67.247919][ T8539] device veth0_macvtap entered promiscuous mode [ 67.259456][ T8539] device veth1_macvtap entered promiscuous mode [ 67.278776][ T8539] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.288570][ T55] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.299182][ T55] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.311872][ T8539] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.320213][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 67.329884][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 67.341548][ T8539] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.351139][ T8539] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.360467][ T8539] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.369867][ T8539] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 67.452890][ T124] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.480725][ T124] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.502772][ T764] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 67.512659][ T55] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 67.515222][ T764] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 67.539460][ T3157] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 67.552051][ T124] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 67.562809][ T124] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 124, name: kworker/u4:3 [ 67.586227][ T124] 4 locks held by kworker/u4:3/124: [ 67.591454][ T124] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 67.615356][ T124] #1: ffffc9000132fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 67.644635][ T124] #2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 67.655468][ T124] #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 67.666193][ T124] Preemption disabled at: [ 67.666222][ T124] [] __mutex_lock+0x10f/0x10e0 [ 67.678631][ T124] CPU: 0 PID: 124 Comm: kworker/u4:3 Not tainted 5.10.0-rc2-syzkaller #0 [ 67.687154][ T124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.697241][ T124] Workqueue: phy4 ieee80211_iface_work [ 67.702716][ T124] Call Trace: [ 67.706157][ T124] dump_stack+0x107/0x163 [ 67.710663][ T124] ? __mutex_lock+0x10f/0x10e0 [ 67.715556][ T124] ___might_sleep.cold+0x1e8/0x22e [ 67.720689][ T124] sta_info_move_state+0x32/0x8d0 [ 67.725734][ T124] sta_info_free+0x65/0x3b0 [ 67.730253][ T124] sta_info_insert_rcu+0x303/0x2ba0 [ 67.735469][ T124] ? find_held_lock+0x2d/0x110 [ 67.740263][ T124] ? rate_control_rate_init+0x32c/0x6a0 [ 67.746304][ T124] ? sta_info_free+0x3b0/0x3b0 [ 67.751091][ T124] ? __local_bh_enable_ip+0x9c/0x110 [ 67.756416][ T124] ? rate_control_rate_init+0x35f/0x6a0 [ 67.761998][ T124] ieee80211_ibss_finish_sta+0x212/0x390 [ 67.767661][ T124] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 67.773752][ T124] ? __local_bh_enable_ip+0x9c/0x110 [ 67.779070][ T124] ieee80211_ibss_work+0x2c7/0xe80 [ 67.784206][ T124] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 67.790555][ T124] ? mark_held_locks+0x9f/0xe0 [ 67.795346][ T124] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 67.801254][ T124] ? lockdep_hardirqs_on+0x79/0x100 [ 67.806637][ T124] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 67.812471][ T124] ieee80211_iface_work+0x82e/0x970 [ 67.817701][ T124] process_one_work+0x933/0x15a0 [ 67.822779][ T124] ? lock_release+0x710/0x710 [ 67.827477][ T124] ? pwq_dec_nr_in_flight+0x320/0x320 [ 67.832874][ T124] ? rwlock_bug.part.0+0x90/0x90 [ 67.837820][ T124] ? _raw_spin_lock_irq+0x41/0x50 [ 67.842866][ T124] worker_thread+0x64c/0x1120 [ 67.847573][ T124] ? __kthread_parkme+0x13f/0x1e0 [ 67.852609][ T124] ? process_one_work+0x15a0/0x15a0 [ 67.857828][ T124] kthread+0x3af/0x4a0 executing program 2020/11/13 14:52:25 building call list... [ 67.861911][ T124] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 67.867830][ T124] ret_from_fork+0x1f/0x30 [ 67.926393][ T124] [ 67.928877][ T124] ============================= [ 67.933818][ T124] [ BUG: Invalid wait context ] [ 67.938664][ T124] 5.10.0-rc2-syzkaller #0 Tainted: G W [ 67.945448][ T124] ----------------------------- [ 67.950297][ T124] kworker/u4:3/124 is trying to lock: [ 67.955668][ T124] ffff888035f2a9d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 [ 67.966280][ T124] other info that might help us debug this: [ 67.972200][ T124] context-{4:4} [ 67.975654][ T124] 4 locks held by kworker/u4:3/124: [ 67.980846][ T124] #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 67.991021][ T124] #1: ffffc9000132fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 68.002262][ T124] #2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 68.011740][ T124] #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 68.021667][ T124] stack backtrace: [ 68.025386][ T124] CPU: 0 PID: 124 Comm: kworker/u4:3 Tainted: G W 5.10.0-rc2-syzkaller #0 [ 68.035173][ T124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.045267][ T124] Workqueue: phy4 ieee80211_iface_work [ 68.050729][ T124] Call Trace: [ 68.054020][ T124] dump_stack+0x107/0x163 [ 68.058341][ T124] __lock_acquire.cold+0x310/0x3a2 [ 68.063449][ T124] ? debug_mutex_unlock+0xb3/0x250 [ 68.068593][ T124] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 68.074661][ T124] lock_acquire+0x2a3/0x8c0 [ 68.079166][ T124] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 68.085150][ T124] ? lock_release+0x710/0x710 [ 68.089828][ T124] __mutex_lock+0x134/0x10e0 [ 68.094425][ T124] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 68.101360][ T124] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 68.107325][ T124] ? mutex_lock_io_nested+0xf60/0xf60 [ 68.112679][ T124] ? ieee80211_clear_fast_rx+0x58/0x80 [ 68.118122][ T124] ? mark_held_locks+0x9f/0xe0 [ 68.122869][ T124] ieee80211_recalc_min_chandef+0x49/0x140 [ 68.128704][ T124] sta_info_move_state+0x3cf/0x8d0 [ 68.133799][ T124] sta_info_free+0x65/0x3b0 [ 68.138285][ T124] sta_info_insert_rcu+0x303/0x2ba0 [ 68.143463][ T124] ? find_held_lock+0x2d/0x110 [ 68.148209][ T124] ? rate_control_rate_init+0x32c/0x6a0 [ 68.153735][ T124] ? sta_info_free+0x3b0/0x3b0 [ 68.158674][ T124] ? __local_bh_enable_ip+0x9c/0x110 [ 68.163956][ T124] ? rate_control_rate_init+0x35f/0x6a0 [ 68.169519][ T124] ieee80211_ibss_finish_sta+0x212/0x390 [ 68.175140][ T124] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 68.181206][ T124] ? __local_bh_enable_ip+0x9c/0x110 [ 68.186473][ T124] ieee80211_ibss_work+0x2c7/0xe80 [ 68.191568][ T124] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 68.197877][ T124] ? mark_held_locks+0x9f/0xe0 [ 68.202623][ T124] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 68.208408][ T124] ? lockdep_hardirqs_on+0x79/0x100 [ 68.213584][ T124] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 68.219372][ T124] ieee80211_iface_work+0x82e/0x970 [ 68.224556][ T124] process_one_work+0x933/0x15a0 [ 68.229553][ T124] ? lock_release+0x710/0x710 [ 68.234226][ T124] ? pwq_dec_nr_in_flight+0x320/0x320 [ 68.239674][ T124] ? rwlock_bug.part.0+0x90/0x90 [ 68.244592][ T124] ? _raw_spin_lock_irq+0x41/0x50 [ 68.249595][ T124] worker_thread+0x64c/0x1120 [ 68.254266][ T124] ? __kthread_parkme+0x13f/0x1e0 [ 68.259286][ T124] ? process_one_work+0x15a0/0x15a0 [ 68.264464][ T124] kthread+0x3af/0x4a0 [ 68.268521][ T124] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 68.274419][ T124] ret_from_fork+0x1f/0x30 [ 68.281242][ T17] Bluetooth: hci0: command 0x0409 tx timeout [ 68.495796][ T1050] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 68.575719][ T8539] syz-executor.0 (8539) used greatest stack depth: 23248 bytes left [ 68.598443][ T1050] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 68.690480][ T1050] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 68.800533][ T1050] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 70.023113][ T1050] device hsr_slave_0 left promiscuous mode [ 70.030232][ T1050] device hsr_slave_1 left promiscuous mode [ 70.041320][ T1050] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 70.049153][ T1050] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 70.058631][ T1050] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 70.066400][ T1050] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 70.074436][ T1050] device bridge_slave_1 left promiscuous mode [ 70.081627][ T1050] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.090214][ T1050] device bridge_slave_0 left promiscuous mode [ 70.097173][ T1050] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.107355][ T1050] device veth1_macvtap left promiscuous mode [ 70.113359][ T1050] device veth0_macvtap left promiscuous mode [ 70.124951][ T1050] device veth1_vlan left promiscuous mode [ 70.130798][ T1050] device veth0_vlan left promiscuous mode executing program [ 71.150934][ T1050] team0 (unregistering): Port device team_slave_1 removed [ 71.160393][ T1050] team0 (unregistering): Port device team_slave_0 removed [ 71.171498][ T1050] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 71.183983][ T1050] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 71.210347][ T1050] bond0 (unregistering): Released all slaves [ 71.278772][ T8524] can: request_module (can-proto-0) failed. [ 71.669242][ T8524] can: request_module (can-proto-0) failed. [ 71.679080][ T8524] can: request_module (can-proto-0) failed. [ 71.823169][ T8524] base_sock_release(0000000003558973) sk=0000000071c8ccdc