[ 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 '10.128.1.60' (ECDSA) to the list of known hosts. 2020/08/05 17:55:42 parsed 1 programs 2020/08/05 17:55:43 executed programs: 0 syzkaller login: [ 1048.926864][ T6993] IPVS: ftp: loaded support on port[0] = 21 [ 1049.024239][ T6993] chnl_net:caif_netlink_parms(): no params data found [ 1049.072427][ T6993] bridge0: port 1(bridge_slave_0) entered blocking state [ 1049.079952][ T6993] bridge0: port 1(bridge_slave_0) entered disabled state [ 1049.090734][ T6993] device bridge_slave_0 entered promiscuous mode [ 1049.099324][ T6993] bridge0: port 2(bridge_slave_1) entered blocking state [ 1049.107380][ T6993] bridge0: port 2(bridge_slave_1) entered disabled state [ 1049.115656][ T6993] device bridge_slave_1 entered promiscuous mode [ 1049.135686][ T6993] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1049.146579][ T6993] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1049.169553][ T6993] team0: Port device team_slave_0 added [ 1049.176922][ T6993] team0: Port device team_slave_1 added [ 1049.193670][ T6993] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1049.200757][ T6993] 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. [ 1049.226919][ T6993] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1049.239351][ T6993] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1049.246353][ T6993] 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. [ 1049.272287][ T6993] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1049.343497][ T6993] device hsr_slave_0 entered promiscuous mode [ 1049.380781][ T6993] device hsr_slave_1 entered promiscuous mode [ 1049.502668][ T6993] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1049.544340][ T6993] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1049.613397][ T6993] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1049.672954][ T6993] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1049.727234][ T6993] bridge0: port 2(bridge_slave_1) entered blocking state [ 1049.734739][ T6993] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1049.742644][ T6993] bridge0: port 1(bridge_slave_0) entered blocking state [ 1049.749700][ T6993] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1049.793002][ T6993] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1049.806488][ T2947] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1049.816879][ T2947] bridge0: port 1(bridge_slave_0) entered disabled state [ 1049.825611][ T2947] bridge0: port 2(bridge_slave_1) entered disabled state [ 1049.834288][ T2947] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1049.847963][ T6993] 8021q: adding VLAN 0 to HW filter on device team0 [ 1049.859044][ T6963] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1049.868094][ T6963] bridge0: port 1(bridge_slave_0) entered blocking state [ 1049.875209][ T6963] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1049.891850][ T2947] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1049.900157][ T2947] bridge0: port 2(bridge_slave_1) entered blocking state [ 1049.907264][ T2947] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1049.931713][ T6963] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1049.940108][ T6963] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1049.949339][ T6963] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1049.958004][ T6963] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1049.967925][ T6993] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1049.977268][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1049.994129][ T2947] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1050.002392][ T2947] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1050.018818][ T6993] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1050.037327][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 1050.046539][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1050.067035][ T2947] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 1050.075903][ T2947] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1050.087956][ T6993] device veth0_vlan entered promiscuous mode [ 1050.095211][ T7203] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1050.103729][ T7203] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1050.115903][ T6993] device veth1_vlan entered promiscuous mode [ 1050.137638][ T7203] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1050.146234][ T7203] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1050.155643][ T7203] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 1050.164642][ T7203] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1050.175416][ T6993] device veth0_macvtap entered promiscuous mode [ 1050.186738][ T6993] device veth1_macvtap entered promiscuous mode [ 1050.204667][ T6993] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1050.212938][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1050.222241][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 1050.231140][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 1050.239566][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1050.252189][ T6993] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1050.260762][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 1050.269345][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1050.281421][ T6993] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 1050.290170][ T6993] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 1050.300160][ T6993] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 1050.310615][ T6993] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 1053.601043][ T2947] Bluetooth: hci0: command 0x0409 tx timeout 2020/08/05 17:55:48 executed programs: 3 [ 1055.680520][ T7203] Bluetooth: hci0: command 0x041b tx timeout [ 1057.759647][ T7203] Bluetooth: hci0: command 0x040f tx timeout 2020/08/05 17:55:54 executed programs: 10 [ 1059.840388][ T7203] Bluetooth: hci0: command 0x0419 tx timeout [ 1061.919181][ T2913] Bluetooth: hci0: command 0x0405 tx timeout 2020/08/05 17:55:59 executed programs: 17 2020/08/05 17:56:05 executed programs: 24 2020/08/05 17:56:11 executed programs: 31 [ 1079.758526][ T0] NOHZ: local_softirq_pending 08 2020/08/05 17:56:17 executed programs: 38 2020/08/05 17:56:22 executed programs: 45 2020/08/05 17:56:28 executed programs: 52 2020/08/05 17:56:34 executed programs: 59 2020/08/05 17:56:40 executed programs: 66 2020/08/05 17:56:45 executed programs: 73 2020/08/05 17:56:51 executed programs: 80 2020/08/05 17:56:57 executed programs: 87 2020/08/05 17:57:02 executed programs: 94 2020/08/05 17:57:08 executed programs: 101 2020/08/05 17:57:14 executed programs: 108 [ 1141.192392][ T0] NOHZ: local_softirq_pending 08 2020/08/05 17:57:20 executed programs: 115 [ 1150.790907][ T5] INFO: trying to register non-static key. [ 1150.796716][ T5] the code is fine but needs lockdep annotation. [ 1150.803015][ T5] turning off the locking correctness validator. [ 1150.809320][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.8.0-rc7-syzkaller #0 [ 1150.817359][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1150.827489][ T5] Workqueue: events l2cap_chan_timeout [ 1150.832919][ T5] Call Trace: [ 1150.836216][ T5] dump_stack+0x18f/0x20d [ 1150.840524][ T5] register_lock_class+0x157d/0x1630 [ 1150.845805][ T5] ? is_dynamic_key+0x1a0/0x1a0 [ 1150.850631][ T5] ? lock_acquire+0x1f1/0xad0 [ 1150.855284][ T5] ? debug_object_assert_init+0x101/0x2e0 [ 1150.860975][ T5] ? find_held_lock+0x2d/0x110 [ 1150.865715][ T5] __lock_acquire+0xfa/0x56e0 [ 1150.870430][ T5] ? lockdep_hardirqs_off+0x66/0xa0 [ 1150.875611][ T5] ? trace_hardirqs_off+0x27/0x210 [ 1150.880698][ T5] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 1150.886652][ T5] ? debug_object_assert_init+0x246/0x2e0 [ 1150.892373][ T5] ? debug_object_init_on_stack+0x20/0x20 [ 1150.898065][ T5] lock_acquire+0x1f1/0xad0 [ 1150.902614][ T5] ? lock_sock_nested+0x3b/0x110 [ 1150.907535][ T5] ? lock_release+0x8d0/0x8d0 [ 1150.912279][ T5] ? mark_held_locks+0x9f/0xe0 [ 1150.917016][ T5] ? lock_is_held_type+0xb0/0xe0 [ 1150.921929][ T5] _raw_spin_lock_bh+0x2f/0x40 [ 1150.926670][ T5] ? lock_sock_nested+0x3b/0x110 [ 1150.931578][ T5] lock_sock_nested+0x3b/0x110 [ 1150.936331][ T5] l2cap_sock_teardown_cb+0x88/0x400 [ 1150.941595][ T5] l2cap_chan_del+0xad/0x1300 [ 1150.946247][ T5] l2cap_chan_close+0x118/0xb10 [ 1150.951073][ T5] ? lock_acquire+0x1f1/0xad0 [ 1150.955814][ T5] ? l2cap_retransmit_all+0x760/0x760 [ 1150.961169][ T5] ? lock_release+0x8d0/0x8d0 [ 1150.965834][ T5] ? lock_downgrade+0x820/0x820 [ 1150.970657][ T5] ? __schedule+0x893/0x2210 [ 1150.975220][ T5] ? _raw_spin_unlock_irq+0x1f/0x80 [ 1150.980394][ T5] l2cap_chan_timeout+0x173/0x450 [ 1150.985399][ T5] process_one_work+0x94c/0x1670 [ 1150.990342][ T5] ? lock_release+0x8d0/0x8d0 [ 1150.994999][ T5] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1151.000368][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 1151.005301][ T5] ? lockdep_hardirqs_off+0x66/0xa0 [ 1151.010484][ T5] worker_thread+0x64c/0x1120 [ 1151.015143][ T5] ? process_one_work+0x1670/0x1670 [ 1151.020314][ T5] kthread+0x3b5/0x4a0 [ 1151.024354][ T5] ? __kthread_bind_mask+0xc0/0xc0 [ 1151.029435][ T5] ? __kthread_bind_mask+0xc0/0xc0 [ 1151.034519][ T5] ret_from_fork+0x1f/0x30 [ 1151.048264][ T5] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 1151.056066][ T5] #PF: supervisor instruction fetch in kernel mode [ 1151.062539][ T5] #PF: error_code(0x0010) - not-present page [ 1151.068496][ T5] PGD 0 P4D 0 [ 1151.071858][ T5] Oops: 0010 [#1] PREEMPT SMP KASAN [ 1151.077037][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.8.0-rc7-syzkaller #0 [ 1151.085077][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1151.095124][ T5] Workqueue: events l2cap_chan_timeout [ 1151.100560][ T5] RIP: 0010:0x0 [ 1151.104004][ T5] Code: Bad RIP value. [ 1151.108048][ T5] RSP: 0018:ffffc90000cbfb60 EFLAGS: 00010246 [ 1151.114091][ T5] RAX: dffffc0000000000 RBX: ffff8880931bd000 RCX: ffffffff8728bc2f [ 1151.122041][ T5] RDX: 1ffff11014549a8c RSI: ffffffff8728be7c RDI: ffff8880a2a4d000 [ 1151.130012][ T5] RBP: 0000000000000005 R08: 0000000000000001 R09: ffff8880a2a4d067 [ 1151.137957][ T5] R10: 0000000000000009 R11: 0000000000000001 R12: 000000000000006f [ 1151.145902][ T5] R13: ffff8880a2a4d000 R14: 0000000000000000 R15: 0000000000000005 [ 1151.154284][ T5] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 1151.163184][ T5] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1151.169741][ T5] CR2: ffffffffffffffd6 CR3: 00000000929e6000 CR4: 00000000001406f0 [ 1151.177692][ T5] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1151.185637][ T5] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1151.193580][ T5] Call Trace: [ 1151.196847][ T5] l2cap_sock_teardown_cb+0x374/0x400 [ 1151.202196][ T5] l2cap_chan_del+0xad/0x1300 [ 1151.206858][ T5] l2cap_chan_close+0x118/0xb10 [ 1151.211681][ T5] ? lock_acquire+0x1f1/0xad0 [ 1151.216341][ T5] ? l2cap_retransmit_all+0x760/0x760 [ 1151.221706][ T5] ? lock_release+0x8d0/0x8d0 [ 1151.226362][ T5] ? lock_downgrade+0x820/0x820 [ 1151.231186][ T5] ? __schedule+0x893/0x2210 [ 1151.235749][ T5] ? _raw_spin_unlock_irq+0x1f/0x80 [ 1151.240928][ T5] l2cap_chan_timeout+0x173/0x450 [ 1151.245946][ T5] process_one_work+0x94c/0x1670 [ 1151.250860][ T5] ? lock_release+0x8d0/0x8d0 [ 1151.255604][ T5] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1151.261298][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 1151.266226][ T5] ? lockdep_hardirqs_off+0x66/0xa0 [ 1151.271409][ T5] worker_thread+0x64c/0x1120 [ 1151.276068][ T5] ? process_one_work+0x1670/0x1670 [ 1151.281242][ T5] kthread+0x3b5/0x4a0 [ 1151.285295][ T5] ? __kthread_bind_mask+0xc0/0xc0 [ 1151.290383][ T5] ? __kthread_bind_mask+0xc0/0xc0 [ 1151.295471][ T5] ret_from_fork+0x1f/0x30 [ 1151.299857][ T5] Modules linked in: [ 1151.303726][ T5] CR2: 0000000000000000 [ 1151.307860][ T5] ---[ end trace ecb0577583d92fc1 ]--- [ 1151.313383][ T5] RIP: 0010:0x0 [ 1151.316831][ T5] Code: Bad RIP value. [ 1151.320871][ T5] RSP: 0018:ffffc90000cbfb60 EFLAGS: 00010246 [ 1151.326907][ T5] RAX: dffffc0000000000 RBX: ffff8880931bd000 RCX: ffffffff8728bc2f [ 1151.334853][ T5] RDX: 1ffff11014549a8c RSI: ffffffff8728be7c RDI: ffff8880a2a4d000 [ 1151.342802][ T5] RBP: 0000000000000005 R08: 0000000000000001 R09: ffff8880a2a4d067 [ 1151.350225][ T2947] ip6_tables: error: `ERROR' [ 1151.350757][ T5] R10: 0000000000000009 R11: 0000000000000001 R12: 000000000000006f [ 1151.350765][ T5] R13: ffff8880a2a4d000 R14: 0000000000000000 R15: 0000000000000005 [ 1151.350775][ T5] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 1151.350789][ T5] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1151.386812][ T5] CR2: ffffffffffffffd6 CR3: 00000000929e6000 CR4: 00000000001406f0 [ 1151.394762][ T5] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1151.402708][ T5] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1151.410652][ T5] Kernel panic - not syncing: Fatal exception [ 1151.418066][ T5] Kernel Offset: disabled [ 1151.422387][ T5] Rebooting in 86400 seconds..