[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.196' (ECDSA) to the list of known hosts. 2020/11/17 20:21:24 fuzzer started 2020/11/17 20:21:24 connecting to host at 10.128.0.26:45867 2020/11/17 20:21:24 checking machine... 2020/11/17 20:21:24 checking revisions... 2020/11/17 20:21:24 testing simple program... syzkaller login: [ 48.222275][ T8469] IPVS: ftp: loaded support on port[0] = 21 [ 48.378727][ T8469] chnl_net:caif_netlink_parms(): no params data found [ 48.429479][ T8469] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.438295][ T8469] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.447367][ T8469] device bridge_slave_0 entered promiscuous mode [ 48.457713][ T8469] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.464846][ T8469] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.472464][ T8469] device bridge_slave_1 entered promiscuous mode [ 48.493587][ T8469] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 48.505694][ T8469] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 48.528115][ T8469] team0: Port device team_slave_0 added [ 48.536817][ T8469] team0: Port device team_slave_1 added [ 48.553848][ T8469] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 48.560902][ T8469] 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. [ 48.587429][ T8469] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 48.601179][ T8469] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 48.608933][ T8469] 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. [ 48.635657][ T8469] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 48.661943][ T8469] device hsr_slave_0 entered promiscuous mode [ 48.668652][ T8469] device hsr_slave_1 entered promiscuous mode [ 48.760407][ T8469] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 48.770547][ T8469] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 48.785509][ T8469] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 48.796852][ T8469] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 48.822865][ T8469] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.830533][ T8469] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.838546][ T8469] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.845700][ T8469] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.888521][ T8469] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.901776][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.912958][ T2987] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.921508][ T2987] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.929974][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 48.943072][ T8469] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.954161][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.962728][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.969884][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.981832][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.991541][ T2987] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.999290][ T2987] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.024813][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.033301][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.042669][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 49.055467][ T3116] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 49.063337][ T3116] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 49.076571][ T8469] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 49.092528][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 49.101596][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 49.115061][ T8469] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 49.132796][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 49.153364][ T8469] device veth0_vlan entered promiscuous mode [ 49.160780][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 49.169856][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 49.178042][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 49.192831][ T8469] device veth1_vlan entered promiscuous mode [ 49.212386][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 49.221016][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 49.229322][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 49.240023][ T8469] device veth0_macvtap entered promiscuous mode [ 49.250479][ T8469] device veth1_macvtap entered promiscuous mode [ 49.266893][ T8469] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 49.274468][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 49.284402][ T2987] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 49.297754][ T8469] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 49.310513][ T8688] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 49.322777][ T8469] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.332294][ T8469] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.342014][ T8469] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.351529][ T8469] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.420423][ T21] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.455452][ T21] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.475075][ T163] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.483019][ T163] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.490944][ T8688] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 49.499431][ T8688] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 49.536289][ T8412] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 49.549650][ T8412] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 8412, name: kworker/u4:6 [ 49.561427][ T8412] 4 locks held by kworker/u4:6/8412: [ 49.567917][ T8412] #0: ffff8880293ab938 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 [ 49.580049][ T8412] #1: ffffc90001757d80 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 [ 49.601396][ T8412] #2: ffff888021724d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x4e/0x1450 [ 49.611165][ T8412] #3: ffffffff8bae68c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 [ 49.620869][ T8412] Preemption disabled at: [ 49.620905][ T8412] [] __mutex_lock_common+0x15c/0x2f20 2020/11/17 20:21:27 building call list... [ 49.636564][ T8412] CPU: 0 PID: 8412 Comm: kworker/u4:6 Not tainted 5.10.0-rc4-syzkaller #0 [ 49.645249][ T8412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.655422][ T8412] Workqueue: phy3 ieee80211_iface_work [ 49.660897][ T8412] Call Trace: [ 49.666636][ T8412] dump_stack+0x137/0x1be [ 49.670978][ T8412] ? wake_up_klogd+0xb2/0xf0 [ 49.675600][ T8412] ___might_sleep+0x3ef/0x530 [ 49.680290][ T8412] ? __mutex_lock_common+0x15c/0x2f20 [ 49.685762][ T8412] sta_info_move_state+0x35/0x830 [ 49.690852][ T8412] sta_info_free+0xcb/0x330 [ 49.695369][ T8412] sta_info_insert_rcu+0x1462/0x1fb0 [ 49.700735][ T8412] ? rcu_lock_release+0x5/0x20 [ 49.705506][ T8412] ? minstrel_ht_alloc_sta+0x3b0/0x3b0 [ 49.711173][ T8412] ? rate_control_rate_init+0x4c6/0x560 [ 49.716728][ T8412] ieee80211_ibss_finish_sta+0x21c/0x2e0 [ 49.722374][ T8412] ieee80211_ibss_work+0x218/0x1450 [ 49.727594][ T8412] ? ieee80211_iface_work+0x949/0xa80 [ 49.733101][ T8412] process_one_work+0x789/0xfc0 [ 49.737972][ T8412] worker_thread+0xaa4/0x1460 [ 49.742653][ T8412] kthread+0x36b/0x390 [ 49.746705][ T8412] ? rcu_lock_release+0x20/0x20 [ 49.751540][ T8412] ? kthread_blkcg+0xd0/0xd0 [ 49.756133][ T8412] ret_from_fork+0x1f/0x30 [ 49.775240][ T8412] [ 49.777582][ T8412] ============================= [ 49.782430][ T8412] [ BUG: Invalid wait context ] [ 49.787271][ T8412] 5.10.0-rc4-syzkaller #0 Tainted: G W [ 49.794020][ T8412] ----------------------------- [ 49.798853][ T8412] kworker/u4:6/8412 is trying to lock: [ 49.804291][ T8412] ffff88802ad829d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x4d/0x120 [ 49.814884][ T8412] other info that might help us debug this: [ 49.820775][ T8412] context-{4:4} [ 49.824223][ T8412] 4 locks held by kworker/u4:6/8412: executing program [ 49.829490][ T8412] #0: ffff8880293ab938 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 [ 49.839557][ T8412] #1: ffffc90001757d80 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 [ 49.850667][ T8412] #2: ffff888021724d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x4e/0x1450 [ 49.860221][ T8412] #3: ffffffff8bae68c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 [ 49.869509][ T8412] stack backtrace: [ 49.873219][ T8412] CPU: 0 PID: 8412 Comm: kworker/u4:6 Tainted: G W 5.10.0-rc4-syzkaller #0 [ 49.883095][ T8412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.893148][ T8412] Workqueue: phy3 ieee80211_iface_work [ 49.898598][ T8412] Call Trace: [ 49.901899][ T8412] dump_stack+0x137/0x1be [ 49.907124][ T8412] ? wake_up_klogd+0xb2/0xf0 [ 49.911706][ T8412] __lock_acquire+0x2617/0x6210 [ 49.916558][ T8412] ? rcu_read_lock_sched_held+0x41/0xb0 [ 49.922179][ T8412] lock_acquire+0x114/0x5e0 [ 49.926693][ T8412] ? ieee80211_recalc_min_chandef+0x4d/0x120 [ 49.932660][ T8412] __mutex_lock_common+0x189/0x2f20 [ 49.937841][ T8412] ? ieee80211_recalc_min_chandef+0x4d/0x120 [ 49.943806][ T8412] ? ieee80211_clear_fast_rx+0x6f/0xb0 [ 49.949252][ T8412] ? ieee80211_clear_fast_rx+0x6f/0xb0 [ 49.954699][ T8412] ? rcu_read_lock_sched_held+0x41/0xb0 [ 49.960231][ T8412] ? ieee80211_recalc_min_chandef+0x4d/0x120 [ 49.966198][ T8412] mutex_lock_nested+0x1a/0x20 [ 49.970945][ T8412] ieee80211_recalc_min_chandef+0x4d/0x120 [ 49.976824][ T8412] sta_info_move_state+0x38a/0x830 [ 49.981925][ T8412] sta_info_free+0xcb/0x330 [ 49.986424][ T8412] sta_info_insert_rcu+0x1462/0x1fb0 [ 49.991696][ T8412] ? rcu_lock_release+0x5/0x20 [ 49.996443][ T8412] ? minstrel_ht_alloc_sta+0x3b0/0x3b0 [ 50.001892][ T8412] ? rate_control_rate_init+0x4c6/0x560 [ 50.007420][ T8412] ieee80211_ibss_finish_sta+0x21c/0x2e0 [ 50.013048][ T8412] ieee80211_ibss_work+0x218/0x1450 [ 50.018246][ T8412] ? ieee80211_iface_work+0x949/0xa80 [ 50.023613][ T8412] process_one_work+0x789/0xfc0 [ 50.028454][ T8412] worker_thread+0xaa4/0x1460 [ 50.033124][ T8412] kthread+0x36b/0x390 [ 50.037180][ T8412] ? rcu_lock_release+0x20/0x20 [ 50.042014][ T8412] ? kthread_blkcg+0xd0/0xd0 [ 50.046587][ T8412] ret_from_fork+0x1f/0x30 [ 50.225638][ T8412] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 50.322833][ T8412] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 50.412106][ T8412] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 50.498220][ T8412] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 51.714265][ T8412] device hsr_slave_0 left promiscuous mode [ 51.727433][ T8412] device hsr_slave_1 left promiscuous mode [ 51.734701][ T8412] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 51.742096][ T8412] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 51.752031][ T8412] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 51.760338][ T8412] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 51.769676][ T8412] device bridge_slave_1 left promiscuous mode [ 51.776386][ T8412] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.785553][ T8412] device bridge_slave_0 left promiscuous mode [ 51.792160][ T8412] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.803451][ T8412] device veth1_macvtap left promiscuous mode [ 51.809483][ T8412] device veth0_macvtap left promiscuous mode [ 51.816349][ T8412] device veth1_vlan left promiscuous mode [ 51.822141][ T8412] device veth0_vlan left promiscuous mode [ 52.599837][ T8412] team0 (unregistering): Port device team_slave_1 removed [ 52.609568][ T8412] team0 (unregistering): Port device team_slave_0 removed [ 52.618825][ T8412] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 52.629638][ T8412] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 52.654281][ T8412] bond0 (unregistering): Released all slaves [ 52.713008][ T8455] can: request_module (can-proto-0) failed. executing program [ 53.111154][ T8455] can: request_module (can-proto-0) failed. [ 53.120942][ T8455] can: request_module (can-proto-0) failed. [ 53.252106][ T8455] base_sock_release(00000000b1e6ec0a) sk=00000000a96a2c8d