[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.231' (ECDSA) to the list of known hosts. 2020/08/07 02:34:11 parsed 1 programs 2020/08/07 02:34:11 executed programs: 0 syzkaller login: [ 1049.176139][ T6852] IPVS: ftp: loaded support on port[0] = 21 [ 1049.277587][ T6852] chnl_net:caif_netlink_parms(): no params data found [ 1049.331489][ T6852] bridge0: port 1(bridge_slave_0) entered blocking state [ 1049.339940][ T6852] bridge0: port 1(bridge_slave_0) entered disabled state [ 1049.347742][ T6852] device bridge_slave_0 entered promiscuous mode [ 1049.357089][ T6852] bridge0: port 2(bridge_slave_1) entered blocking state [ 1049.365121][ T6852] bridge0: port 2(bridge_slave_1) entered disabled state [ 1049.373241][ T6852] device bridge_slave_1 entered promiscuous mode [ 1049.393378][ T6852] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1049.404575][ T6852] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1049.427378][ T6852] team0: Port device team_slave_0 added [ 1049.434692][ T6852] team0: Port device team_slave_1 added [ 1049.452163][ T6852] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1049.459149][ T6852] 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. [ 1049.485267][ T6852] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1049.497919][ T6852] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1049.505713][ T6852] 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. [ 1049.532434][ T6852] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1049.591997][ T6852] device hsr_slave_0 entered promiscuous mode [ 1049.630522][ T6852] device hsr_slave_1 entered promiscuous mode [ 1049.776418][ T6852] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1049.831728][ T6852] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1049.881395][ T6852] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1049.921351][ T6852] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1049.986593][ T6852] bridge0: port 2(bridge_slave_1) entered blocking state [ 1049.993885][ T6852] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1050.001819][ T6852] bridge0: port 1(bridge_slave_0) entered blocking state [ 1050.008975][ T6852] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1050.053511][ T6852] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1050.067158][ T6822] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1050.077699][ T6822] bridge0: port 1(bridge_slave_0) entered disabled state [ 1050.086699][ T6822] bridge0: port 2(bridge_slave_1) entered disabled state [ 1050.095629][ T6822] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1050.109794][ T6852] 8021q: adding VLAN 0 to HW filter on device team0 [ 1050.121015][ T2585] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1050.130238][ T2585] bridge0: port 1(bridge_slave_0) entered blocking state [ 1050.137337][ T2585] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1050.159367][ T7062] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1050.167909][ T7062] bridge0: port 2(bridge_slave_1) entered blocking state [ 1050.175025][ T7062] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1050.183969][ T7062] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1050.201619][ T2580] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1050.209994][ T2580] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1050.218238][ T2580] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1050.227026][ T2580] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1050.239373][ T6852] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1050.256795][ T2580] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1050.266981][ T2580] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1050.280637][ T6852] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1050.299408][ T2585] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 1050.308215][ T2585] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1050.330458][ T2585] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 1050.339651][ T2585] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1050.351553][ T2585] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1050.359457][ T2585] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1050.367942][ T6852] device veth0_vlan entered promiscuous mode [ 1050.381050][ T6852] device veth1_vlan entered promiscuous mode [ 1050.402064][ T7062] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1050.410806][ T7062] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1050.419301][ T7062] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 1050.427753][ T7062] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1050.438114][ T6852] device veth0_macvtap entered promiscuous mode [ 1050.449138][ T6852] device veth1_macvtap entered promiscuous mode [ 1050.465266][ T6852] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1050.473532][ T2585] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1050.482395][ T2585] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 1050.490903][ T2585] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 1050.499953][ T2585] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1050.512988][ T6852] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1050.520628][ T7062] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 1050.533128][ T7062] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1050.545356][ T6852] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 1050.557727][ T6852] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 1050.566539][ T6852] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 1050.575293][ T6852] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 1053.899208][ T6982] Bluetooth: hci0: command 0x0409 tx timeout 2020/08/07 02:34:16 executed programs: 61 [ 1055.980249][ T6982] Bluetooth: hci0: command 0x041b tx timeout [ 1058.058108][ T2585] Bluetooth: hci0: command 0x040f tx timeout 2020/08/07 02:34:21 executed programs: 207 [ 1060.137736][ T2585] Bluetooth: hci0: command 0x0419 tx timeout [ 1062.217609][ T6982] Bluetooth: hci0: command 0x0405 tx timeout 2020/08/07 02:34:27 executed programs: 352 2020/08/07 02:34:32 executed programs: 510 2020/08/07 02:34:37 executed programs: 659 2020/08/07 02:34:42 executed programs: 811 2020/08/07 02:34:47 executed programs: 957 2020/08/07 02:34:52 executed programs: 1107 [ 1093.814660][ T6982] INFO: trying to register non-static key. [ 1093.820505][ T6982] the code is fine but needs lockdep annotation. [ 1093.826831][ T6982] turning off the locking correctness validator. [ 1093.833166][ T6982] CPU: 0 PID: 6982 Comm: kworker/0:1 Not tainted 5.8.0-rc7-next-20200731-syzkaller #0 [ 1093.842789][ T6982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1093.852989][ T6982] Workqueue: events l2cap_chan_timeout [ 1093.859823][ T6982] Call Trace: [ 1093.863196][ T6982] dump_stack+0x18f/0x20d [ 1093.867620][ T6982] register_lock_class+0x157d/0x1630 [ 1093.872911][ T6982] ? is_dynamic_key+0x1a0/0x1a0 [ 1093.877854][ T6982] ? lock_repin_lock+0x460/0x460 [ 1093.882798][ T6982] ? mark_lock+0xbc/0x1710 [ 1093.887220][ T6982] ? add_lock_to_list.constprop.0+0x148/0x480 [ 1093.893300][ T6982] __lock_acquire+0xf9/0x5640 [ 1093.897985][ T6982] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 1093.904025][ T6982] ? stack_trace_consume_entry+0x160/0x160 [ 1093.909857][ T6982] lock_acquire+0x1f1/0xad0 [ 1093.914504][ T6982] ? lock_sock_nested+0x3b/0x110 [ 1093.919452][ T6982] ? lock_release+0x8e0/0x8e0 [ 1093.924137][ T6982] ? __lock_acquire+0x2e85/0x5640 [ 1093.929344][ T6982] ? lock_is_held_type+0xbb/0xf0 [ 1093.934287][ T6982] ? lock_is_held_type+0xbb/0xf0 [ 1093.939271][ T6982] _raw_spin_lock_bh+0x2f/0x40 [ 1093.944044][ T6982] ? lock_sock_nested+0x3b/0x110 [ 1093.948987][ T6982] lock_sock_nested+0x3b/0x110 [ 1093.953759][ T6982] l2cap_sock_teardown_cb+0x88/0x400 [ 1093.959052][ T6982] l2cap_chan_close+0x2cc/0xb10 [ 1093.963915][ T6982] ? lock_acquire+0x1f1/0xad0 [ 1093.968596][ T6982] ? l2cap_retransmit_all+0x760/0x760 [ 1093.973984][ T6982] ? lock_release+0x8e0/0x8e0 [ 1093.978668][ T6982] ? lock_downgrade+0x830/0x830 [ 1093.983521][ T6982] ? __schedule+0x88e/0x21e0 [ 1093.988290][ T6982] ? _raw_spin_unlock_irq+0x1f/0x80 [ 1093.993495][ T6982] l2cap_chan_timeout+0x173/0x450 [ 1093.998622][ T6982] process_one_work+0x94c/0x1670 [ 1094.003803][ T6982] ? lock_release+0x8e0/0x8e0 [ 1094.008486][ T6982] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1094.013869][ T6982] ? rwlock_bug.part.0+0x90/0x90 [ 1094.018820][ T6982] ? lockdep_hardirqs_off+0x7e/0xb0 [ 1094.024114][ T6982] worker_thread+0x64c/0x1120 [ 1094.028796][ T6982] ? __kthread_parkme+0x13f/0x1e0 [ 1094.033841][ T6982] ? process_one_work+0x1670/0x1670 [ 1094.039050][ T6982] kthread+0x3b5/0x4a0 [ 1094.043119][ T6982] ? __kthread_bind_mask+0xc0/0xc0 [ 1094.048236][ T6982] ? __kthread_bind_mask+0xc0/0xc0 [ 1094.053416][ T6982] ret_from_fork+0x1f/0x30 2020/08/07 02:34:57 executed programs: 1274