[ 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 ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.222' (ECDSA) to the list of known hosts. 2020/11/16 13:57:51 parsed 1 programs 2020/11/16 13:57:52 executed programs: 0 syzkaller login: [ 35.394830] IPVS: ftp: loaded support on port[0] = 21 [ 35.498478] chnl_net:caif_netlink_parms(): no params data found [ 35.615053] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.621957] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.629188] device bridge_slave_0 entered promiscuous mode [ 35.636982] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.643717] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.651131] device bridge_slave_1 entered promiscuous mode [ 35.668751] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 35.677506] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 35.695237] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 35.702625] team0: Port device team_slave_0 added [ 35.708016] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 35.715805] team0: Port device team_slave_1 added [ 35.730792] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 35.737046] 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. [ 35.762259] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 35.773643] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 35.779870] 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. [ 35.805697] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 35.816381] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 35.823992] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 35.843733] device hsr_slave_0 entered promiscuous mode [ 35.849528] device hsr_slave_1 entered promiscuous mode [ 35.856155] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 35.863683] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 35.927980] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.934454] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.941565] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.947915] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.981573] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 35.987660] 8021q: adding VLAN 0 to HW filter on device bond0 [ 35.996988] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 36.006158] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 36.015069] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.024014] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.031588] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 36.042173] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 36.048230] 8021q: adding VLAN 0 to HW filter on device team0 [ 36.058041] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 36.066180] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.072749] bridge0: port 1(bridge_slave_0) entered forwarding state [ 36.083433] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 36.091057] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.097381] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.117104] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 36.127116] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 36.138832] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 36.146646] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 36.154634] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 36.162818] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 36.171071] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 36.178736] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 36.185878] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 36.198889] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 36.206707] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 36.213490] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 36.223226] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 36.236404] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 36.245774] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 36.277328] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 36.285592] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 36.293840] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 36.303947] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 36.312439] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 36.319332] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 36.328608] device veth0_vlan entered promiscuous mode [ 36.338475] device veth1_vlan entered promiscuous mode [ 36.345020] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 36.354079] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 36.365209] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 36.374642] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 36.382204] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 36.389383] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 36.399117] device veth0_macvtap entered promiscuous mode [ 36.405333] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 36.413818] device veth1_macvtap entered promiscuous mode [ 36.423017] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 36.432159] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 36.442873] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 36.450131] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 36.458397] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 36.468676] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 36.475595] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 36.582588] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 36.589258] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 36.606172] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 36.610543] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 36.619251] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 36.625758] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 36.628334] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 36.641206] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 36.939903] INFO: trying to register non-static key. [ 36.945182] the code is fine but needs lockdep annotation. [ 36.950839] turning off the locking correctness validator. [ 36.956499] CPU: 1 PID: 8447 Comm: syz-executor.0 Not tainted 4.19.157-syzkaller #0 [ 36.964271] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.973603] Call Trace: [ 36.976179] dump_stack+0x1fc/0x2fe [ 36.979787] register_lock_class+0xe76/0x11c0 [ 36.984264] ? enqueue_entity+0xf86/0x3850 [ 36.988480] ? static_obj+0x50/0x50 [ 36.992089] ? try_to_wake_up+0x733/0x1050 [ 36.996320] __lock_acquire+0x17d/0x3ff0 [ 37.000389] ? trace_hardirqs_off+0x64/0x200 [ 37.004797] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 37.009880] ? try_to_wake_up+0x733/0x1050 [ 37.014092] ? mark_held_locks+0xf0/0xf0 [ 37.018132] ? __queue_work+0x5f1/0x1100 [ 37.022188] ? lock_downgrade+0x720/0x720 [ 37.026312] ? lock_acquire+0x170/0x3c0 [ 37.030290] ? do_raw_spin_unlock+0x171/0x230 [ 37.034764] lock_acquire+0x170/0x3c0 [ 37.038544] ? skb_dequeue+0x1c/0x180 [ 37.042332] _raw_spin_lock_irqsave+0x8c/0xc0 [ 37.046811] ? skb_dequeue+0x1c/0x180 [ 37.050613] skb_dequeue+0x1c/0x180 [ 37.054219] skb_queue_purge+0x21/0x30 [ 37.058086] l2cap_chan_del+0x690/0xa50 [ 37.062048] l2cap_chan_close+0x1b5/0x950 [ 37.066189] ? __set_monitor_timer+0x200/0x200 [ 37.070758] ? wait_for_completion_io+0x10/0x10 [ 37.075407] ? mark_held_locks+0xa6/0xf0 [ 37.079450] ? __local_bh_enable_ip+0x159/0x270 [ 37.084105] l2cap_sock_shutdown+0x339/0xe10 [ 37.088498] ? l2cap_sock_getname+0x510/0x510 [ 37.093411] ? l2cap_sock_release+0x6a/0x290 [ 37.097802] ? lock_downgrade+0x720/0x720 [ 37.101929] ? do_raw_write_lock+0xb8/0x1e0 [ 37.106235] l2cap_sock_release+0x77/0x290 [ 37.110451] __sock_release+0xcd/0x2a0 [ 37.114316] ? __sock_release+0x2a0/0x2a0 [ 37.118441] sock_close+0x15/0x20 [ 37.121875] __fput+0x2ce/0x890 [ 37.125150] task_work_run+0x148/0x1c0 [ 37.129017] get_signal+0x1b64/0x1f70 [ 37.132800] ? __local_bh_enable_ip+0x159/0x270 [ 37.137496] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 37.142072] do_signal+0x8f/0x1670 [ 37.145639] ? kick_process+0xe4/0x170 [ 37.149514] ? setup_sigcontext+0x820/0x820 [ 37.153927] ? l2cap_sock_accept+0x550/0x550 [ 37.158338] ? fput+0xf2/0x190 [ 37.161517] ? __sys_connect+0x140/0x2c0 [ 37.165559] ? __ia32_sys_accept+0xb0/0xb0 [ 37.169833] ? put_timespec64+0xcb/0x120 [ 37.173895] ? __se_compat_sys_gettimeofday+0x1b0/0x1b0 [ 37.179252] ? __se_sys_clock_gettime+0x124/0x1e0 [ 37.184078] ? exit_to_usermode_loop+0x36/0x2a0 [ 37.188727] exit_to_usermode_loop+0x204/0x2a0 [ 37.193290] do_syscall_64+0x538/0x620 [ 37.197160] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.202417] RIP: 0033:0x45deb9 [ 37.205589] Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 37.224486] RSP: 002b:00007fe8200dcc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 37.232185] RAX: fffffffffffffffc RBX: 0000000000002200 RCX: 000000000045deb9 [ 37.239432] RDX: 000000000000000e RSI: 0000000020000040 RDI: 0000000000000007 [ 37.246684] RBP: 000000000118c008 R08: 0000000000000000 R09: 0000000000000000 [ 37.253949] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bfd4 [ 37.261199] R13: 00007ffde820ee2f R14: 00007fe8200dd9c0 R15: 000000000118bfd4 [ 37.429483] Bluetooth: hci0: command 0x0409 tx timeout 2020/11/16 13:57:57 executed programs: 262 [ 39.508232] Bluetooth: hci0: command 0x041b tx timeout [ 41.590531] Bluetooth: hci0: command 0x040f tx timeout [ 43.666597] Bluetooth: hci0: command 0x0419 tx timeout 2020/11/16 13:58:02 executed programs: 909 [ 45.745952] Bluetooth: hci0: command 0x0405 tx timeout