[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.24' (ECDSA) to the list of known hosts. 2020/08/03 21:05:21 parsed 1 programs 2020/08/03 21:05:21 executed programs: 0 syzkaller login: [ 40.279562] audit: type=1400 audit(1596488721.382:8): avc: denied { execmem } for pid=6478 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 40.323580] IPVS: ftp: loaded support on port[0] = 21 [ 40.408562] chnl_net:caif_netlink_parms(): no params data found [ 40.506739] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.513810] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.522505] device bridge_slave_0 entered promiscuous mode [ 40.530937] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.537472] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.545555] device bridge_slave_1 entered promiscuous mode [ 40.564697] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.573981] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.594850] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 40.602478] team0: Port device team_slave_0 added [ 40.609792] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 40.617546] team0: Port device team_slave_1 added [ 40.634286] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 40.640796] 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. [ 40.667266] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 40.680190] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 40.686559] 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. [ 40.712665] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 40.724607] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 40.733096] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.790496] device hsr_slave_0 entered promiscuous mode [ 40.828095] device hsr_slave_1 entered promiscuous mode [ 40.868386] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 40.875845] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.949000] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.955694] bridge0: port 2(bridge_slave_1) entered forwarding state [ 40.962678] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.969119] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.003809] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 41.012398] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.021222] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 41.030895] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 41.039998] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.057334] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.064979] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 41.076891] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 41.083953] 8021q: adding VLAN 0 to HW filter on device team0 [ 41.094242] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 41.102843] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.109547] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.121816] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 41.129762] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.136139] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.154459] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 41.163036] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 41.174379] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 41.187048] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 41.200890] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 41.212858] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 41.218987] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 41.226274] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 41.240952] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 41.249728] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 41.256403] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 41.270871] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 41.284983] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 41.295567] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 41.334609] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 41.342935] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 41.350665] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 41.361321] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 41.369193] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 41.376578] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 41.386885] device veth0_vlan entered promiscuous mode [ 41.396861] device veth1_vlan entered promiscuous mode [ 41.403855] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 41.411415] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 41.428279] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 41.438939] IPv6: ADDRCONF(NETDEV_UP): veth1_macvtap: link is not ready [ 41.446513] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 41.455883] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 41.466367] device veth0_macvtap entered promiscuous mode [ 41.473545] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 41.483563] device veth1_macvtap entered promiscuous mode [ 41.490459] IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready [ 41.501696] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 41.512235] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 41.522427] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 41.530242] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 41.537017] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 41.545978] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 41.554096] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 41.562509] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 41.574635] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 41.582221] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 41.589163] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 41.597550] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 43.111994] INFO: trying to register non-static key. [ 43.117110] the code is fine but needs lockdep annotation. [ 43.122724] turning off the locking correctness validator. [ 43.128327] CPU: 0 PID: 6748 Comm: syz-executor.0 Not tainted 4.19.136-syzkaller #0 [ 43.136120] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.145475] Call Trace: [ 43.148074] dump_stack+0x1fc/0x2fe [ 43.151691] register_lock_class+0xe76/0x11c0 [ 43.156176] ? pick_next_entity+0x27e/0x580 [ 43.160488] ? static_obj+0x50/0x50 [ 43.164105] ? finish_task_switch+0x146/0x780 [ 43.168678] __lock_acquire+0x17d/0x3ff0 [ 43.172726] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 43.177307] ? _raw_spin_unlock_irq+0x5a/0x80 [ 43.181778] ? finish_task_switch+0x146/0x780 [ 43.186252] ? finish_task_switch+0x118/0x780 [ 43.190735] ? switch_mm_irqs_off+0x764/0x1340 [ 43.195300] ? mark_held_locks+0xf0/0xf0 [ 43.199349] ? __schedule+0x88f/0x2040 [ 43.203215] ? mark_held_locks+0xa6/0xf0 [ 43.207251] ? io_schedule_timeout+0x140/0x140 [ 43.211809] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 43.216546] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 43.221123] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 43.225855] lock_acquire+0x170/0x3c0 [ 43.229646] ? skb_dequeue+0x1c/0x170 [ 43.233445] _raw_spin_lock_irqsave+0x8c/0xc0 [ 43.237931] ? skb_dequeue+0x1c/0x170 [ 43.241723] skb_dequeue+0x1c/0x170 [ 43.245356] skb_queue_purge+0x21/0x30 [ 43.249225] l2cap_chan_del+0x616/0x8e0 [ 43.253179] l2cap_chan_close+0x108/0x820 [ 43.257304] ? __set_monitor_timer+0x130/0x130 [ 43.261862] ? wait_for_completion_io+0x10/0x10 [ 43.266508] ? mark_held_locks+0xa6/0xf0 [ 43.270545] ? __local_bh_enable_ip+0x159/0x270 [ 43.275189] l2cap_sock_shutdown+0x85e/0xbd0 [ 43.279577] ? l2cap_skb_msg_name+0x120/0x120 [ 43.284049] ? l2cap_sock_release+0x56/0x190 [ 43.288436] ? lock_downgrade+0x720/0x720 [ 43.292577] ? do_raw_write_lock+0xb8/0x1e0 [ 43.296877] l2cap_sock_release+0x63/0x190 [ 43.301112] __sock_release+0xcd/0x2a0 [ 43.304978] ? __sock_release+0x2a0/0x2a0 [ 43.309105] sock_close+0x15/0x20 [ 43.312551] __fput+0x2ce/0x890 [ 43.315822] task_work_run+0x148/0x1c0 [ 43.319691] get_signal+0x1b64/0x1f70 [ 43.323470] ? __local_bh_enable_ip+0x159/0x270 [ 43.328122] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 43.332681] do_signal+0x8f/0x1670 [ 43.336201] ? kick_process+0xe4/0x170 [ 43.340063] ? setup_sigcontext+0x820/0x820 [ 43.344360] ? l2cap_sock_accept+0x4d0/0x4d0 [ 43.348743] ? fput+0xf2/0x190 [ 43.351913] ? __sys_connect+0x140/0x2c0 [ 43.355963] ? __ia32_sys_accept+0xb0/0xb0 [ 43.360189] ? put_timespec64+0xcb/0x120 [ 43.364242] ? __se_sys_clock_gettime+0x124/0x1e0 [ 43.369063] ? exit_to_usermode_loop+0x36/0x2a0 [ 43.373710] exit_to_usermode_loop+0x204/0x2a0 [ 43.378271] do_syscall_64+0x538/0x620 [ 43.382159] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 43.387334] RIP: 0033:0x45cc79 [ 43.390525] Code: 2d b6 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 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 43.409404] RSP: 002b:00007f8070054c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 43.417110] RAX: fffffffffffffffc RBX: 0000000000002040 RCX: 000000000045cc79 [ 43.424357] RDX: 0000000000000080 RSI: 0000000020000100 RDI: 0000000000000006 [ 43.431602] RBP: 000000000078bfe0 R08: 0000000000000000 R09: 0000000000000000 [ 43.438852] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bfac [ 43.446151] R13: 00007ffcc26244df R14: 00007f80700559c0 R15: 000000000078bfac [ 44.835448] Bluetooth: hci0: command 0x0409 tx timeout 2020/08/03 21:05:26 executed programs: 119 [ 46.914445] Bluetooth: hci0: command 0x041b tx timeout [ 48.993546] Bluetooth: hci0: command 0x040f tx timeout 2020/08/03 21:05:31 executed programs: 348 [ 51.073273] Bluetooth: hci0: command 0x0419 tx timeout