[ 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 '10.128.0.16' (ECDSA) to the list of known hosts. 2021/04/29 20:32:28 fuzzer started 2021/04/29 20:32:28 connecting to host at 10.128.0.169:42439 2021/04/29 20:32:28 checking machine... 2021/04/29 20:32:28 checking revisions... 2021/04/29 20:32:28 testing simple program... syzkaller login: [ 75.593153][ T8449] chnl_net:caif_netlink_parms(): no params data found [ 75.664995][ T8449] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.677963][ T8449] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.689139][ T8449] device bridge_slave_0 entered promiscuous mode [ 75.702699][ T8449] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.713630][ T8449] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.728359][ T8449] device bridge_slave_1 entered promiscuous mode [ 75.754724][ T8449] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.776689][ T8449] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.803831][ T8449] team0: Port device team_slave_0 added [ 75.813116][ T8449] team0: Port device team_slave_1 added [ 75.833807][ T8449] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.843488][ T8449] 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. [ 75.877398][ T8449] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.897864][ T8449] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.908600][ T8449] 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. [ 75.947789][ T8449] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.984400][ T8449] device hsr_slave_0 entered promiscuous mode [ 75.994636][ T8449] device hsr_slave_1 entered promiscuous mode [ 76.123293][ T8449] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.142011][ T8449] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.153940][ T8449] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.168772][ T8449] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.201852][ T8449] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.211021][ T8449] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.221153][ T8449] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.230026][ T8449] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.282518][ T8449] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.299478][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.314451][ T2939] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.326225][ T2939] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.337277][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.354096][ T8449] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.366783][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.379098][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.387132][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.402355][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.413659][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.424493][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.451571][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.463266][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.478845][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.493463][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.505275][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.516861][ T8449] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.537959][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.546588][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.564589][ T8449] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.587495][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 76.598316][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.624015][ T8449] device veth0_vlan entered promiscuous mode [ 76.631874][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.643372][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.654712][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.665521][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.684312][ T8449] device veth1_vlan entered promiscuous mode [ 76.709171][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.718617][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.728453][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.738436][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.752073][ T8449] device veth0_macvtap entered promiscuous mode [ 76.763854][ T8449] device veth1_macvtap entered promiscuous mode [ 76.782147][ T8449] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.791921][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.801225][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready executing program [ 76.811511][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.821206][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.835459][ T8449] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.848873][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.860367][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.873374][ T8449] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.884514][ T8449] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.894230][ T8449] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.903763][ T8449] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.014782][ T160] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.026206][ T160] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.047292][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 77.084357][ T75] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.095633][ T75] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.108951][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/04/29 20:32:32 building call list... [ 77.321808][ T8] Bluetooth: hci0: command 0x0409 tx timeout [ 77.849044][ T160] ------------[ cut here ]------------ [ 77.855423][ T160] hook not found, pf 3 num 0 [ 77.856199][ T160] WARNING: CPU: 0 PID: 160 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 77.877356][ T160] Modules linked in: [ 77.885788][ T160] CPU: 0 PID: 160 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 77.897294][ T160] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.910334][ T160] Workqueue: netns cleanup_net [ 77.916245][ T160] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 77.925775][ T160] Code: 0f b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 11 04 00 00 8b 53 1c 89 ee 48 c7 c7 c0 78 6d 8a e8 60 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 79 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 77.949885][ T160] RSP: 0018:ffffc9000100fbc0 EFLAGS: 00010286 [ 77.956904][ T160] RAX: 0000000000000000 RBX: ffff888146f60e00 RCX: 0000000000000000 [ 77.969982][ T160] RDX: ffff88801270d4c0 RSI: ffffffff815c8ba5 RDI: fffff52000201f6a [ 77.982406][ T160] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 77.993268][ T160] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801ba98f20 [ 78.003365][ T160] R13: 0000000000000000 R14: ffff88801416ee80 R15: 0000000000000001 [ 78.013538][ T160] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 78.025157][ T160] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.034473][ T160] CR2: 00007f17821a1000 CR3: 000000001e33a000 CR4: 00000000001506f0 [ 78.049615][ T160] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.058801][ T160] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.073397][ T160] Call Trace: [ 78.076832][ T160] nf_unregister_net_hooks+0x117/0x160 [ 78.084337][ T160] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.093654][ T160] ? arptable_filter_net_exit+0x20/0x20 [ 78.100933][ T160] cleanup_net+0x451/0xb10 [ 78.105687][ T160] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.115620][ T160] process_one_work+0x98d/0x1600 [ 78.125386][ T160] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.134681][ T160] ? rwlock_bug.part.0+0x90/0x90 [ 78.141694][ T160] ? _raw_spin_lock_irq+0x41/0x50 [ 78.147406][ T160] worker_thread+0x64c/0x1120 [ 78.155482][ T160] ? process_one_work+0x1600/0x1600 [ 78.162650][ T160] kthread+0x3b1/0x4a0 [ 78.167914][ T160] ? __kthread_bind_mask+0xc0/0xc0 [ 78.176401][ T160] ret_from_fork+0x1f/0x30 [ 78.183962][ T160] Kernel panic - not syncing: panic_on_warn set ... [ 78.191880][ T160] CPU: 0 PID: 160 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 78.200930][ T160] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.211626][ T160] Workqueue: netns cleanup_net [ 78.216950][ T160] Call Trace: [ 78.220792][ T160] dump_stack+0x141/0x1d7 [ 78.225948][ T160] panic+0x306/0x73d [ 78.230937][ T160] ? __warn_printk+0xf3/0xf3 [ 78.236370][ T160] ? __warn.cold+0x1a/0x44 [ 78.241340][ T160] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.247937][ T160] __warn.cold+0x35/0x44 [ 78.252414][ T160] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.259104][ T160] report_bug+0x1bd/0x210 [ 78.263881][ T160] handle_bug+0x3c/0x60 [ 78.268482][ T160] exc_invalid_op+0x14/0x40 [ 78.273696][ T160] asm_exc_invalid_op+0x12/0x20 [ 78.278858][ T160] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 78.285574][ T160] Code: 0f b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 11 04 00 00 8b 53 1c 89 ee 48 c7 c7 c0 78 6d 8a e8 60 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 79 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 78.308277][ T160] RSP: 0018:ffffc9000100fbc0 EFLAGS: 00010286 [ 78.314731][ T160] RAX: 0000000000000000 RBX: ffff888146f60e00 RCX: 0000000000000000 [ 78.323963][ T160] RDX: ffff88801270d4c0 RSI: ffffffff815c8ba5 RDI: fffff52000201f6a [ 78.333704][ T160] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 78.342985][ T160] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801ba98f20 [ 78.353553][ T160] R13: 0000000000000000 R14: ffff88801416ee80 R15: 0000000000000001 [ 78.362686][ T160] ? wake_up_klogd.part.0+0x8e/0xd0 [ 78.368726][ T160] ? vprintk+0x95/0x260 [ 78.373467][ T160] nf_unregister_net_hooks+0x117/0x160 [ 78.379735][ T160] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.385951][ T160] ? arptable_filter_net_exit+0x20/0x20 [ 78.391886][ T160] cleanup_net+0x451/0xb10 [ 78.396782][ T160] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.402767][ T160] process_one_work+0x98d/0x1600 [ 78.407785][ T160] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.413321][ T160] ? rwlock_bug.part.0+0x90/0x90 [ 78.418639][ T160] ? _raw_spin_lock_irq+0x41/0x50 [ 78.424361][ T160] worker_thread+0x64c/0x1120 [ 78.429165][ T160] ? process_one_work+0x1600/0x1600 [ 78.435131][ T160] kthread+0x3b1/0x4a0 [ 78.439231][ T160] ? __kthread_bind_mask+0xc0/0xc0 [ 78.445310][ T160] ret_from_fork+0x1f/0x30 [ 78.451616][ T160] Kernel Offset: disabled [ 78.456445][ T160] Rebooting in 86400 seconds..