[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ 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... 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 '10.128.0.48' (ECDSA) to the list of known hosts. 2020/11/10 18:35:58 fuzzer started 2020/11/10 18:35:59 connecting to host at 10.128.0.26:39559 2020/11/10 18:35:59 checking machine... 2020/11/10 18:35:59 checking revisions... 2020/11/10 18:35:59 testing simple program... syzkaller login: [ 73.251671][ T35] audit: type=1400 audit(1605033359.485:8): avc: denied { execmem } for pid=8491 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 74.459785][ T8492] IPVS: ftp: loaded support on port[0] = 21 [ 74.614340][ T8492] chnl_net:caif_netlink_parms(): no params data found [ 74.671035][ T8492] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.679724][ T8492] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.689613][ T8492] device bridge_slave_0 entered promiscuous mode [ 74.699681][ T8492] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.707666][ T8492] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.716893][ T8492] device bridge_slave_1 entered promiscuous mode [ 74.740698][ T8492] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.753495][ T8492] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.778220][ T8492] team0: Port device team_slave_0 added [ 74.786463][ T8492] team0: Port device team_slave_1 added [ 74.805961][ T8492] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.813774][ T8492] 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. [ 74.841765][ T8492] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.855593][ T8492] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.863873][ T8492] 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. [ 74.890808][ T8492] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.920598][ T8492] device hsr_slave_0 entered promiscuous mode [ 74.927591][ T8492] device hsr_slave_1 entered promiscuous mode [ 75.043199][ T8492] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.060529][ T8492] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.070562][ T8492] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.086372][ T8492] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.114902][ T8492] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.122280][ T8492] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.130234][ T8492] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.137459][ T8492] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.190536][ T8492] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.206897][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.220465][ T2987] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.230759][ T2987] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.239751][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 75.255526][ T8492] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.268210][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.278185][ T4199] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.285351][ T4199] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.304475][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.313324][ T4199] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.320468][ T4199] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.342703][ T4895] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.352879][ T4895] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.363982][ T4895] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.375729][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.390470][ T8492] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.403130][ T8492] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.412106][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.432400][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.440187][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.455834][ T8492] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.478333][ T4895] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.502443][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.511244][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.521025][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.534488][ T8492] device veth0_vlan entered promiscuous mode [ 75.548001][ T8492] device veth1_vlan entered promiscuous mode [ 75.575364][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.584037][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.593973][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.607033][ T8492] device veth0_macvtap entered promiscuous mode [ 75.618385][ T8492] device veth1_macvtap entered promiscuous mode [ 75.638165][ T8492] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.646974][ T4895] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.656521][ T4895] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.679512][ T8492] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.687209][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.697866][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.710209][ T8492] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.719748][ T8492] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.728737][ T8492] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.738097][ T8492] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.843172][ T69] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.864575][ T69] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.883477][ T4199] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 75.922705][ T69] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.930828][ T69] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.943923][ T4895] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.990440][ T69] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 76.001631][ T69] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 69, name: kworker/u4:3 [ 76.012329][ T69] 4 locks held by kworker/u4:3/69: [ 76.017624][ T69] #0: ffff888029455938 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 2020/11/10 18:36:02 building call list... [ 76.046240][ T69] #1: ffffc90000fd7da8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 76.059931][ T69] #2: ffff8880289a8d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 76.078398][ T69] #3: ffffffff8b337060 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 76.118619][ T69] Preemption disabled at: [ 76.118650][ T69] [] __mutex_lock+0x10f/0x10e0 [ 76.142615][ T69] CPU: 1 PID: 69 Comm: kworker/u4:3 Not tainted 5.10.0-rc3-syzkaller #0 [ 76.151321][ T69] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.161556][ T69] Workqueue: phy3 ieee80211_iface_work [ 76.167042][ T69] Call Trace: [ 76.170358][ T69] dump_stack+0x107/0x163 [ 76.174735][ T69] ? __mutex_lock+0x10f/0x10e0 [ 76.179615][ T69] ___might_sleep.cold+0x1e8/0x22e [ 76.184982][ T69] sta_info_move_state+0x32/0x8d0 [ 76.190049][ T69] sta_info_free+0x65/0x3b0 [ 76.194679][ T69] sta_info_insert_rcu+0x303/0x2ba0 [ 76.200011][ T69] ? find_held_lock+0x2d/0x110 [ 76.205113][ T69] ? rate_control_rate_init+0x32c/0x6a0 [ 76.210696][ T69] ? sta_info_free+0x3b0/0x3b0 [ 76.215585][ T69] ? __local_bh_enable_ip+0x9c/0x110 [ 76.220922][ T69] ? rate_control_rate_init+0x35f/0x6a0 [ 76.226509][ T69] ieee80211_ibss_finish_sta+0x212/0x390 [ 76.232352][ T69] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 76.238452][ T69] ? __local_bh_enable_ip+0x9c/0x110 [ 76.243775][ T69] ieee80211_ibss_work+0x2c7/0xe80 [ 76.248929][ T69] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 76.255495][ T69] ? mark_held_locks+0x9f/0xe0 [ 76.260562][ T69] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 76.266389][ T69] ? lockdep_hardirqs_on+0x79/0x100 [ 76.271779][ T69] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 76.277702][ T69] ieee80211_iface_work+0x82e/0x970 [ 76.283014][ T69] process_one_work+0x933/0x15a0 [ 76.287994][ T69] ? lock_release+0x710/0x710 [ 76.292811][ T69] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.298220][ T69] ? rwlock_bug.part.0+0x90/0x90 [ 76.303186][ T69] ? _raw_spin_lock_irq+0x41/0x50 [ 76.308323][ T69] worker_thread+0x64c/0x1120 [ 76.313203][ T69] ? process_one_work+0x15a0/0x15a0 [ 76.318435][ T69] kthread+0x3af/0x4a0 [ 76.322516][ T69] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 76.328427][ T69] ret_from_fork+0x1f/0x30 [ 76.346187][ T69] [ 76.348556][ T69] ============================= [ 76.353558][ T69] [ BUG: Invalid wait context ] [ 76.358499][ T69] 5.10.0-rc3-syzkaller #0 Tainted: G W [ 76.365346][ T69] ----------------------------- [ 76.370368][ T69] kworker/u4:3/69 is trying to lock: [ 76.375798][ T69] ffff888034c929d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 [ 76.386413][ T69] other info that might help us debug this: [ 76.392300][ T69] context-{4:4} [ 76.395759][ T69] 4 locks held by kworker/u4:3/69: [ 76.400889][ T69] #0: ffff888029455938 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 76.411086][ T69] #1: ffffc90000fd7da8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 76.422435][ T69] #2: ffff8880289a8d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 76.432016][ T69] #3: ffffffff8b337060 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 76.442210][ T69] stack backtrace: [ 76.445937][ T69] CPU: 1 PID: 69 Comm: kworker/u4:3 Tainted: G W 5.10.0-rc3-syzkaller #0 [ 76.455657][ T69] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.465810][ T69] Workqueue: phy3 ieee80211_iface_work [ 76.471265][ T69] Call Trace: [ 76.474561][ T69] dump_stack+0x107/0x163 [ 76.478894][ T69] __lock_acquire.cold+0x310/0x3a2 [ 76.484022][ T69] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 76.490090][ T69] ? find_held_lock+0x2d/0x110 [ 76.494861][ T69] lock_acquire+0x2a3/0x8c0 [ 76.499366][ T69] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 76.505351][ T69] ? lock_release+0x710/0x710 [ 76.510209][ T69] __mutex_lock+0x134/0x10e0 [ 76.514805][ T69] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 76.520874][ T69] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 76.526856][ T69] ? mutex_lock_io_nested+0xf60/0xf60 [ 76.532244][ T69] ? ieee80211_clear_fast_rx+0x58/0x80 [ 76.537717][ T69] ? mark_held_locks+0x9f/0xe0 [ 76.542499][ T69] ieee80211_recalc_min_chandef+0x49/0x140 [ 76.548307][ T69] sta_info_move_state+0x3cf/0x8d0 [ 76.553476][ T69] sta_info_free+0x65/0x3b0 [ 76.557982][ T69] sta_info_insert_rcu+0x303/0x2ba0 [ 76.563198][ T69] ? find_held_lock+0x2d/0x110 [ 76.567982][ T69] ? rate_control_rate_init+0x32c/0x6a0 [ 76.573544][ T69] ? sta_info_free+0x3b0/0x3b0 [ 76.578482][ T69] ? __local_bh_enable_ip+0x9c/0x110 [ 76.583871][ T69] ? rate_control_rate_init+0x35f/0x6a0 [ 76.589520][ T69] ieee80211_ibss_finish_sta+0x212/0x390 [ 76.595161][ T69] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 76.601236][ T69] ? __local_bh_enable_ip+0x9c/0x110 [ 76.606714][ T69] ieee80211_ibss_work+0x2c7/0xe80 [ 76.611833][ T69] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 76.618164][ T69] ? mark_held_locks+0x9f/0xe0 [ 76.622933][ T69] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 76.628741][ T69] ? lockdep_hardirqs_on+0x79/0x100 [ 76.633942][ T69] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 76.639753][ T69] ieee80211_iface_work+0x82e/0x970 [ 76.644959][ T69] process_one_work+0x933/0x15a0 [ 76.649972][ T69] ? lock_release+0x710/0x710 [ 76.655137][ T69] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.660520][ T69] ? rwlock_bug.part.0+0x90/0x90 [ 76.665457][ T69] ? _raw_spin_lock_irq+0x41/0x50 [ 76.670481][ T69] worker_thread+0x64c/0x1120 [ 76.675166][ T69] ? process_one_work+0x15a0/0x15a0 [ 76.680458][ T69] kthread+0x3af/0x4a0 [ 76.684530][ T69] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 76.690521][ T69] ret_from_fork+0x1f/0x30 [ 76.702159][ T2987] Bluetooth: hci0: command 0x0409 tx timeout [ 76.899296][ T69] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 76.996653][ T69] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.075963][ T69] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 77.157255][ T69] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 78.375895][ T69] device hsr_slave_0 left promiscuous mode [ 78.389250][ T69] device hsr_slave_1 left promiscuous mode [ 78.397569][ T69] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 78.406253][ T69] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 78.415435][ T69] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 78.424463][ T69] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 78.433286][ T69] device bridge_slave_1 left promiscuous mode [ 78.439494][ T69] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.449144][ T69] device bridge_slave_0 left promiscuous mode [ 78.458648][ T69] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.469758][ T69] device veth1_macvtap left promiscuous mode [ 78.476751][ T69] device veth0_macvtap left promiscuous mode [ 78.483806][ T69] device veth1_vlan left promiscuous mode [ 78.489642][ T69] device veth0_vlan left promiscuous mode executing program [ 79.441016][ T69] team0 (unregistering): Port device team_slave_1 removed [ 79.450999][ T69] team0 (unregistering): Port device team_slave_0 removed [ 79.464209][ T69] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 79.476056][ T69] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 79.503429][ T69] bond0 (unregistering): Released all slaves [ 79.604187][ T8479] can: request_module (can-proto-0) failed. [ 79.977141][ T8479] can: request_module (can-proto-0) failed. [ 79.987676][ T8479] can: request_module (can-proto-0) failed. [ 80.022447][ T35] audit: type=1400 audit(1605033366.266:9): avc: denied { create } for pid=8475 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1 [ 80.148520][ T8479] base_sock_release(00000000b79b2388) sk=00000000aa2850c2