[ 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 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... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Warning: Permanently added '10.128.0.118' (ECDSA) to the list of known hosts. Debian GNU/Linux 9 syzkaller ttyS0 2020/11/07 12:46:57 fuzzer started 2020/11/07 12:46:57 connecting to host at 10.128.0.26:44715 2020/11/07 12:46:57 checking machine... 2020/11/07 12:46:57 checking revisions... 2020/11/07 12:46:57 testing simple program... syzkaller login: [ 70.913716][ T34] audit: type=1400 audit(1604753217.926:8): avc: denied { execmem } for pid=8483 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 72.054234][ T8484] IPVS: ftp: loaded support on port[0] = 21 [ 72.218925][ T8484] chnl_net:caif_netlink_parms(): no params data found [ 72.283421][ T8484] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.291507][ T8484] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.300929][ T8484] device bridge_slave_0 entered promiscuous mode [ 72.310228][ T8484] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.317649][ T8484] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.326586][ T8484] device bridge_slave_1 entered promiscuous mode [ 72.350292][ T8484] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.361285][ T8484] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.386645][ T8484] team0: Port device team_slave_0 added [ 72.394396][ T8484] team0: Port device team_slave_1 added [ 72.413039][ T8484] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.420037][ T8484] 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. [ 72.446832][ T8484] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.460576][ T8484] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.468220][ T8484] 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. [ 72.495988][ T8484] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.524941][ T8484] device hsr_slave_0 entered promiscuous mode [ 72.531772][ T8484] device hsr_slave_1 entered promiscuous mode [ 72.640604][ T8484] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.651075][ T8484] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.668422][ T8484] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.679276][ T8484] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.706176][ T8484] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.713310][ T8484] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.721392][ T8484] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.728544][ T8484] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.780124][ T8484] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.793798][ T2986] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.807483][ T2986] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.816836][ T2986] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.824745][ T2986] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 72.838990][ T8484] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.851331][ T2986] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.860780][ T2986] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.867919][ T2986] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.885636][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.894476][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.901746][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.917691][ T8702] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.927388][ T8702] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.941692][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.956459][ T8702] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.967794][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.980884][ T8484] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.000247][ T3177] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.009767][ T3177] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.025508][ T8484] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.046179][ T8702] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.069459][ T2986] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.078805][ T2986] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.087885][ T2986] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.099877][ T8484] device veth0_vlan entered promiscuous mode [ 73.113498][ T8484] device veth1_vlan entered promiscuous mode [ 73.137976][ T3177] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.147488][ T3177] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.156356][ T3177] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.169158][ T8484] device veth0_macvtap entered promiscuous mode [ 73.181060][ T8484] device veth1_macvtap entered promiscuous mode [ 73.199852][ T8484] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.209150][ T3177] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.220229][ T3177] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.232222][ T8484] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.239952][ T2986] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.248763][ T2986] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.260403][ T8484] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.269773][ T8484] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.278915][ T8484] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.298095][ T8484] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.395112][ T21] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.403415][ T21] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.438054][ T46] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.439162][ T2986] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.454816][ T46] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.466621][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 73.489722][ T150] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 73.502249][ T150] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 150, name: kworker/u4:3 [ 73.519706][ T150] 4 locks held by kworker/u4:3/150: [ 73.526470][ T150] #0: ffff888029ca5138 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 73.537933][ T150] #1: ffffc90001377da8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 73.549586][ T150] #2: ffff888034a28d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 73.559823][ T150] #3: ffffffff8b337060 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 73.584083][ T150] Preemption disabled at: [ 73.584112][ T150] [] __mutex_lock+0x10f/0x10e0 [ 73.595090][ T150] CPU: 1 PID: 150 Comm: kworker/u4:3 Not tainted 5.10.0-rc2-syzkaller #0 [ 73.603512][ T150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.613589][ T150] Workqueue: phy4 ieee80211_iface_work [ 73.619063][ T150] Call Trace: [ 73.622368][ T150] dump_stack+0x107/0x163 [ 73.626712][ T150] ? __mutex_lock+0x10f/0x10e0 [ 73.631488][ T150] ___might_sleep.cold+0x1e8/0x22e executing program [ 73.636611][ T150] sta_info_move_state+0x32/0x8d0 [ 73.641650][ T150] sta_info_free+0x65/0x3b0 [ 73.646170][ T150] sta_info_insert_rcu+0x303/0x2ba0 [ 73.651393][ T150] ? find_held_lock+0x2d/0x110 [ 73.656179][ T150] ? rate_control_rate_init+0x32c/0x6a0 [ 73.661747][ T150] ? sta_info_free+0x3b0/0x3b0 [ 73.666534][ T150] ? __local_bh_enable_ip+0x9c/0x110 [ 73.671840][ T150] ? rate_control_rate_init+0x35f/0x6a0 [ 73.677405][ T150] ieee80211_ibss_finish_sta+0x212/0x390 [ 73.683056][ T150] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 2020/11/07 12:47:00 building call list... [ 73.689145][ T150] ? __local_bh_enable_ip+0x9c/0x110 [ 73.694454][ T150] ieee80211_ibss_work+0x2c7/0xe80 [ 73.699588][ T150] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 73.705947][ T150] ? mark_held_locks+0x9f/0xe0 [ 73.710736][ T150] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 73.716665][ T150] ? lockdep_hardirqs_on+0x79/0x100 [ 73.721884][ T150] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 73.727720][ T150] ieee80211_iface_work+0x82e/0x970 [ 73.732947][ T150] process_one_work+0x933/0x15a0 [ 73.737908][ T150] ? lock_release+0x710/0x710 [ 73.742592][ T150] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.747976][ T150] ? rwlock_bug.part.0+0x90/0x90 [ 73.752918][ T150] ? _raw_spin_lock_irq+0x41/0x50 [ 73.757957][ T150] worker_thread+0x64c/0x1120 [ 73.762653][ T150] ? __kthread_parkme+0x13f/0x1e0 [ 73.767688][ T150] ? process_one_work+0x15a0/0x15a0 [ 73.772895][ T150] kthread+0x3af/0x4a0 [ 73.776969][ T150] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 73.782871][ T150] ret_from_fork+0x1f/0x30 [ 73.835121][ T150] [ 73.837477][ T150] ============================= [ 73.842318][ T150] [ BUG: Invalid wait context ] [ 73.847158][ T150] 5.10.0-rc2-syzkaller #0 Tainted: G W [ 73.853909][ T150] ----------------------------- [ 73.858752][ T150] kworker/u4:3/150 is trying to lock: [ 73.864146][ T150] ffff8880349429d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 [ 73.874766][ T150] other info that might help us debug this: [ 73.880657][ T150] context-{4:4} [ 73.884112][ T150] 4 locks held by kworker/u4:3/150: [ 73.889297][ T150] #0: ffff888029ca5138 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 73.899473][ T150] #1: ffffc90001377da8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 73.910693][ T150] #2: ffff888034a28d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 73.920166][ T150] #3: ffffffff8b337060 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 73.930069][ T150] stack backtrace: [ 73.933802][ T150] CPU: 1 PID: 150 Comm: kworker/u4:3 Tainted: G W 5.10.0-rc2-syzkaller #0 [ 73.943611][ T150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.953745][ T150] Workqueue: phy4 ieee80211_iface_work [ 73.959198][ T150] Call Trace: [ 73.962476][ T150] dump_stack+0x107/0x163 [ 73.966786][ T150] __lock_acquire.cold+0x310/0x3a2 [ 73.971879][ T150] ? debug_mutex_unlock+0xc3/0x250 [ 73.976973][ T150] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 73.983080][ T150] lock_acquire+0x2a3/0x8c0 [ 73.987579][ T150] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 73.993567][ T150] ? lock_release+0x710/0x710 [ 73.998234][ T150] __mutex_lock+0x134/0x10e0 [ 74.002813][ T150] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 74.008797][ T150] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 74.014758][ T150] ? mutex_lock_io_nested+0xf60/0xf60 [ 74.020131][ T150] ? ieee80211_clear_fast_rx+0x58/0x80 [ 74.025574][ T150] ? mark_held_locks+0x9f/0xe0 [ 74.030322][ T150] ieee80211_recalc_min_chandef+0x49/0x140 [ 74.036125][ T150] sta_info_move_state+0x3cf/0x8d0 [ 74.041226][ T150] sta_info_free+0x65/0x3b0 [ 74.045713][ T150] sta_info_insert_rcu+0x303/0x2ba0 [ 74.050892][ T150] ? find_held_lock+0x2d/0x110 [ 74.055636][ T150] ? rate_control_rate_init+0x32c/0x6a0 [ 74.061176][ T150] ? sta_info_free+0x3b0/0x3b0 [ 74.065922][ T150] ? __local_bh_enable_ip+0x9c/0x110 [ 74.071185][ T150] ? rate_control_rate_init+0x35f/0x6a0 [ 74.076717][ T150] ieee80211_ibss_finish_sta+0x212/0x390 [ 74.082341][ T150] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 74.088387][ T150] ? __local_bh_enable_ip+0x9c/0x110 [ 74.093668][ T150] ieee80211_ibss_work+0x2c7/0xe80 [ 74.098762][ T150] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 74.105071][ T150] ? mark_held_locks+0x9f/0xe0 [ 74.109817][ T150] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 74.115614][ T150] ? lockdep_hardirqs_on+0x79/0x100 [ 74.120802][ T150] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 74.126615][ T150] ieee80211_iface_work+0x82e/0x970 [ 74.131813][ T150] process_one_work+0x933/0x15a0 [ 74.136750][ T150] ? lock_release+0x710/0x710 [ 74.141415][ T150] ? pwq_dec_nr_in_flight+0x320/0x320 [ 74.146773][ T150] ? rwlock_bug.part.0+0x90/0x90 [ 74.151710][ T150] ? _raw_spin_lock_irq+0x41/0x50 [ 74.156730][ T150] worker_thread+0x64c/0x1120 [ 74.161400][ T150] ? __kthread_parkme+0x13f/0x1e0 [ 74.166471][ T150] ? process_one_work+0x15a0/0x15a0 [ 74.171675][ T150] kthread+0x3af/0x4a0 [ 74.175735][ T150] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 74.181627][ T150] ret_from_fork+0x1f/0x30 [ 74.205932][ T5] Bluetooth: hci0: command 0x0409 tx timeout [ 74.411056][ T150] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.502780][ T150] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.600173][ T150] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.682040][ T150] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.845748][ T150] device hsr_slave_0 left promiscuous mode [ 75.862558][ T150] device hsr_slave_1 left promiscuous mode [ 75.869010][ T150] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 75.877446][ T150] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 75.886360][ T150] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 75.893733][ T150] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 75.904103][ T150] device bridge_slave_1 left promiscuous mode [ 75.911456][ T150] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.920141][ T150] device bridge_slave_0 left promiscuous mode [ 75.927476][ T150] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.937999][ T150] device veth1_macvtap left promiscuous mode [ 75.943998][ T150] device veth0_macvtap left promiscuous mode [ 75.951281][ T150] device veth1_vlan left promiscuous mode [ 75.957673][ T150] device veth0_vlan left promiscuous mode executing program [ 77.090130][ T150] team0 (unregistering): Port device team_slave_1 removed [ 77.102021][ T150] team0 (unregistering): Port device team_slave_0 removed [ 77.112228][ T150] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 77.123793][ T150] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 77.151546][ T150] bond0 (unregistering): Released all slaves [ 77.212152][ T8728] can: request_module (can-proto-0) failed. [ 77.638290][ T8728] can: request_module (can-proto-0) failed. [ 77.648401][ T8728] can: request_module (can-proto-0) failed. [ 77.681529][ T34] audit: type=1400 audit(1604753224.697:9): avc: denied { create } for pid=8468 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1 [ 77.801564][ T8728] base_sock_release(00000000971635ba) sk=00000000112427ec