[ OK ] Started Regular background program processing daemon. Starting getty on tty2-tty6 if dbus and logind are not available... Starting OpenBSD Secure Shell server... Starting System Logging Service... Starting Permit User Sessions... [ OK ] Found device /dev/ttyS0. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ 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 '10.128.10.38' (ECDSA) to the list of known hosts. 2020/11/16 10:30:55 fuzzer started 2020/11/16 10:30:55 connecting to host at 10.128.0.26:36139 2020/11/16 10:30:55 checking machine... 2020/11/16 10:30:55 checking revisions... 2020/11/16 10:30:55 testing simple program... syzkaller login: [ 70.237887][ T35] audit: type=1400 audit(1605522656.045:8): avc: denied { execmem } for pid=8498 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 71.496214][ T8499] IPVS: ftp: loaded support on port[0] = 21 [ 71.617728][ T8499] chnl_net:caif_netlink_parms(): no params data found [ 71.676513][ T8499] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.685133][ T8499] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.693794][ T8499] device bridge_slave_0 entered promiscuous mode [ 71.703815][ T8499] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.711548][ T8499] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.719224][ T8499] device bridge_slave_1 entered promiscuous mode [ 71.742805][ T8499] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.754515][ T8499] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.778061][ T8499] team0: Port device team_slave_0 added [ 71.786712][ T8499] team0: Port device team_slave_1 added [ 71.815392][ T8499] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.822622][ T8499] 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. [ 71.851400][ T8499] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.866327][ T8499] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.874163][ T8499] 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. [ 71.900905][ T8499] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.929883][ T8499] device hsr_slave_0 entered promiscuous mode [ 71.936895][ T8499] device hsr_slave_1 entered promiscuous mode [ 72.048473][ T8499] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.060554][ T8499] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.072909][ T8499] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.083961][ T8499] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.114065][ T8499] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.121426][ T8499] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.129409][ T8499] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.136573][ T8499] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.184414][ T8499] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.198059][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.210864][ T3068] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.219050][ T3068] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.228054][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 72.242535][ T8499] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.254322][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.263473][ T3068] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.270590][ T3068] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.292883][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.303582][ T3068] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.310714][ T3068] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.318829][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.330287][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.343698][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.356709][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.369704][ T8499] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 72.383382][ T8499] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.393838][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.410858][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.418379][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.434072][ T8499] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.454431][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.476399][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.486887][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.494707][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.506108][ T8499] device veth0_vlan entered promiscuous mode [ 72.518521][ T8499] device veth1_vlan entered promiscuous mode [ 72.541549][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.549702][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.558802][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.572537][ T8499] device veth0_macvtap entered promiscuous mode [ 72.583224][ T8499] device veth1_macvtap entered promiscuous mode [ 72.601637][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.614074][ T8499] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.621730][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.632966][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.645036][ T8499] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.653467][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.663124][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.677791][ T8499] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.687127][ T8499] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.696352][ T8499] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.705965][ T8499] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.800023][ T420] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.813756][ T420] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.840725][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.858839][ T420] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.867190][ T420] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.876468][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 72.920930][ T21] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 72.932969][ T21] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 21, name: kworker/u4:1 [ 72.960142][ T21] 4 locks held by kworker/u4:1/21: executing program [ 72.965294][ T21] #0: ffff88802773f138 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 72.980561][ T21] #1: ffffc90000dd7da8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 72.997340][ T21] #2: ffff888029d30d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 2020/11/16 10:30:58 building call list... [ 73.032326][ T21] #3: ffffffff8b337720 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 73.045369][ T21] Preemption disabled at: [ 73.045398][ T21] [] __mutex_lock+0x10f/0x10e0 [ 73.059007][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.10.0-rc4-syzkaller #0 [ 73.067352][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.077425][ T21] Workqueue: phy3 ieee80211_iface_work [ 73.082894][ T21] Call Trace: [ 73.086185][ T21] dump_stack+0x107/0x163 [ 73.090555][ T21] ? __mutex_lock+0x10f/0x10e0 [ 73.095327][ T21] ___might_sleep.cold+0x1e8/0x22e [ 73.100452][ T21] sta_info_move_state+0x32/0x8d0 [ 73.105491][ T21] sta_info_free+0x65/0x3b0 [ 73.109999][ T21] sta_info_insert_rcu+0x303/0x2ba0 [ 73.115203][ T21] ? find_held_lock+0x2d/0x110 [ 73.119982][ T21] ? rate_control_rate_init+0x32c/0x6a0 [ 73.125541][ T21] ? sta_info_free+0x3b0/0x3b0 [ 73.130319][ T21] ? __local_bh_enable_ip+0x9c/0x110 [ 73.135617][ T21] ? rate_control_rate_init+0x35f/0x6a0 [ 73.141172][ T21] ieee80211_ibss_finish_sta+0x212/0x390 [ 73.146819][ T21] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 73.152903][ T21] ? __local_bh_enable_ip+0x9c/0x110 [ 73.158203][ T21] ieee80211_ibss_work+0x2c7/0xe80 [ 73.163329][ T21] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 73.169665][ T21] ? mark_held_locks+0x9f/0xe0 [ 73.174436][ T21] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 73.180264][ T21] ? lockdep_hardirqs_on+0x79/0x100 [ 73.185489][ T21] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 73.191313][ T21] ieee80211_iface_work+0x82e/0x970 [ 73.196535][ T21] process_one_work+0x933/0x15a0 [ 73.201489][ T21] ? lock_release+0x710/0x710 [ 73.206169][ T21] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.211555][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 73.216494][ T21] ? _raw_spin_lock_irq+0x41/0x50 [ 73.221549][ T21] worker_thread+0x64c/0x1120 [ 73.226261][ T21] ? process_one_work+0x15a0/0x15a0 [ 73.231574][ T21] kthread+0x3af/0x4a0 [ 73.235649][ T21] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 73.241553][ T21] ret_from_fork+0x1f/0x30 [ 73.270827][ T21] [ 73.273182][ T21] ============================= [ 73.278018][ T21] [ BUG: Invalid wait context ] [ 73.282857][ T21] 5.10.0-rc4-syzkaller #0 Tainted: G W [ 73.289856][ T21] ----------------------------- [ 73.294688][ T21] kworker/u4:1/21 is trying to lock: [ 73.299957][ T21] ffff8880348629d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 [ 73.310562][ T21] other info that might help us debug this: [ 73.316437][ T21] context-{4:4} [ 73.319888][ T21] 4 locks held by kworker/u4:1/21: [ 73.324982][ T21] #0: ffff88802773f138 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 [ 73.335156][ T21] #1: ffffc90000dd7da8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 [ 73.346370][ T21] #2: ffff888029d30d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 [ 73.355852][ T21] #3: ffffffff8b337720 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 [ 73.365773][ T21] stack backtrace: [ 73.369490][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Tainted: G W 5.10.0-rc4-syzkaller #0 [ 73.379190][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.389243][ T21] Workqueue: phy3 ieee80211_iface_work [ 73.394702][ T21] Call Trace: [ 73.397989][ T21] dump_stack+0x107/0x163 [ 73.402312][ T21] __lock_acquire.cold+0x1d6/0x39f [ 73.407425][ T21] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 73.414185][ T21] ? find_held_lock+0x2d/0x110 [ 73.418940][ T21] lock_acquire+0x2a3/0x8c0 [ 73.423438][ T21] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 73.431491][ T21] ? lock_release+0x710/0x710 [ 73.436159][ T21] __mutex_lock+0x134/0x10e0 [ 73.440745][ T21] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 73.446719][ T21] ? ieee80211_recalc_min_chandef+0x49/0x140 [ 73.452689][ T21] ? mutex_lock_io_nested+0xf60/0xf60 [ 73.458056][ T21] ? ieee80211_clear_fast_rx+0x58/0x80 [ 73.463532][ T21] ? mark_held_locks+0x9f/0xe0 [ 73.468294][ T21] ieee80211_recalc_min_chandef+0x49/0x140 [ 73.474132][ T21] sta_info_move_state+0x3cf/0x8d0 [ 73.479239][ T21] sta_info_free+0x65/0x3b0 [ 73.483735][ T21] sta_info_insert_rcu+0x303/0x2ba0 [ 73.489184][ T21] ? find_held_lock+0x2d/0x110 [ 73.493941][ T21] ? rate_control_rate_init+0x32c/0x6a0 [ 73.499474][ T21] ? sta_info_free+0x3b0/0x3b0 [ 73.504232][ T21] ? __local_bh_enable_ip+0x9c/0x110 [ 73.509510][ T21] ? rate_control_rate_init+0x35f/0x6a0 [ 73.515059][ T21] ieee80211_ibss_finish_sta+0x212/0x390 [ 73.520701][ T21] ? ieee80211_ibss_build_presp+0x15f0/0x15f0 [ 73.527286][ T21] ? __local_bh_enable_ip+0x9c/0x110 [ 73.532567][ T21] ieee80211_ibss_work+0x2c7/0xe80 [ 73.537678][ T21] ? ieee80211_ibss_rx_queued_mgmt+0x1870/0x1870 [ 73.544001][ T21] ? mark_held_locks+0x9f/0xe0 [ 73.548758][ T21] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 73.554559][ T21] ? lockdep_hardirqs_on+0x79/0x100 [ 73.559748][ T21] ? _raw_spin_unlock_irqrestore+0x2f/0x50 [ 73.565544][ T21] ieee80211_iface_work+0x82e/0x970 [ 73.570735][ T21] process_one_work+0x933/0x15a0 [ 73.575662][ T21] ? lock_release+0x710/0x710 [ 73.580341][ T21] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.585703][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 73.590628][ T21] ? _raw_spin_lock_irq+0x41/0x50 [ 73.595641][ T21] worker_thread+0x64c/0x1120 [ 73.600395][ T21] ? process_one_work+0x15a0/0x15a0 [ 73.605584][ T21] kthread+0x3af/0x4a0 [ 73.609647][ T21] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 73.615532][ T21] ret_from_fork+0x1f/0x30 [ 73.630907][ T3068] Bluetooth: hci0: command 0x0409 tx timeout [ 73.833397][ T8] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 73.923427][ T8] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.006187][ T8] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.096600][ T8] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 75.337283][ T8] device hsr_slave_0 left promiscuous mode [ 75.350288][ T8] device hsr_slave_1 left promiscuous mode [ 75.360309][ T8] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 75.367731][ T8] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 75.376734][ T8] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 75.385439][ T8] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 75.394619][ T8] device bridge_slave_1 left promiscuous mode [ 75.401194][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.410490][ T8] device bridge_slave_0 left promiscuous mode [ 75.416749][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.427491][ T8] device veth1_macvtap left promiscuous mode [ 75.434094][ T8] device veth0_macvtap left promiscuous mode [ 75.440824][ T8] device veth1_vlan left promiscuous mode [ 75.446604][ T8] device veth0_vlan left promiscuous mode executing program [ 76.287937][ T8] team0 (unregistering): Port device team_slave_1 removed [ 76.297756][ T8] team0 (unregistering): Port device team_slave_0 removed [ 76.307081][ T8] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 76.317942][ T8] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 76.344474][ T8] bond0 (unregistering): Released all slaves [ 76.417080][ T8486] can: request_module (can-proto-0) failed. [ 76.832181][ T8486] can: request_module (can-proto-0) failed. [ 76.842623][ T8486] can: request_module (can-proto-0) failed. [ 76.874771][ T35] audit: type=1400 audit(1605522662.676:9): avc: denied { create } for pid=8483 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1 [ 76.996341][ T8486] base_sock_release(00000000115bb7ae) sk=00000000992d8156