[ 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 '10.128.1.18' (ECDSA) to the list of known hosts. 2021/04/28 21:31:53 fuzzer started 2021/04/28 21:31:53 connecting to host at 10.128.0.169:40487 2021/04/28 21:31:53 checking machine... 2021/04/28 21:31:53 checking revisions... 2021/04/28 21:31:53 testing simple program... syzkaller login: [ 74.954597][ T8405] chnl_net:caif_netlink_parms(): no params data found [ 75.016948][ T8405] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.027471][ T8405] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.039421][ T8405] device bridge_slave_0 entered promiscuous mode [ 75.050618][ T8405] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.060971][ T8405] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.071292][ T8405] device bridge_slave_1 entered promiscuous mode [ 75.105011][ T8405] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.124157][ T8405] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.149742][ T8405] team0: Port device team_slave_0 added [ 75.161129][ T8405] team0: Port device team_slave_1 added [ 75.180122][ T8405] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.188534][ T8405] 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. [ 75.218870][ T8405] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.237550][ T8405] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.250630][ T8405] 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. [ 75.288181][ T8405] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.321320][ T8405] device hsr_slave_0 entered promiscuous mode [ 75.330530][ T8405] device hsr_slave_1 entered promiscuous mode [ 75.441992][ T8405] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.460282][ T8405] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.470720][ T8405] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.485231][ T8405] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.516718][ T8405] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.525357][ T8405] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.536398][ T8405] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.545877][ T8405] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.596598][ T8405] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.611675][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.626185][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.636644][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.647226][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 75.664487][ T8405] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.677115][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.687049][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.697091][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.727280][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.743413][ T4850] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.755799][ T4850] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.766818][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.782138][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.807435][ T8405] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.827716][ T8405] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.847204][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.858868][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.872743][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.894933][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.907114][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.920227][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.936806][ T8405] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.963625][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 75.978017][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.003288][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 76.014721][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.031107][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.042965][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.056878][ T8405] device veth0_vlan entered promiscuous mode [ 76.071379][ T8405] device veth1_vlan entered promiscuous mode [ 76.097018][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.107783][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.118329][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.129876][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.142884][ T8405] device veth0_macvtap entered promiscuous mode [ 76.157728][ T8405] device veth1_macvtap entered promiscuous mode executing program [ 76.176914][ T8405] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.188057][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.200912][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.212031][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.228872][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.244679][ T8405] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.257769][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.268986][ T4850] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.283587][ T8405] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.297125][ T8405] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.309923][ T8405] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.324491][ T8405] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.425880][ T168] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.441773][ T168] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.475486][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.485773][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 76.497637][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.517269][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/04/28 21:31:56 building call list... [ 76.663666][ T8] Bluetooth: hci0: command 0x0409 tx timeout [ 77.202011][ T9] ------------[ cut here ]------------ [ 77.208752][ T9] hook not found, pf 3 num 0 [ 77.209277][ T9] WARNING: CPU: 1 PID: 9 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 77.229709][ T9] Modules linked in: [ 77.235507][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-rc7-syzkaller #0 [ 77.248600][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.274928][ T9] Workqueue: netns cleanup_net [ 77.280790][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 77.290566][ T9] 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 00 6c 6c 8a e8 8e 38 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 36 35 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 77.328807][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 77.338540][ T9] RAX: 0000000000000000 RBX: ffff888021766900 RCX: 0000000000000000 [ 77.351649][ T9] RDX: ffff888011568000 RSI: ffffffff815c5205 RDI: fffff5200019cf6a [ 77.367015][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 77.376654][ T9] R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffff8880188b8f20 [ 77.392466][ T9] R13: 0000000000000000 R14: ffff88801bec9580 R15: 0000000000000001 [ 77.401510][ T9] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 77.415266][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.424820][ T9] CR2: 00007fa0d760c000 CR3: 0000000012b92000 CR4: 00000000001506e0 [ 77.439465][ T9] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.450010][ T9] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.463303][ T9] Call Trace: [ 77.467329][ T9] nf_unregister_net_hooks+0x117/0x160 [ 77.476894][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 77.486460][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 77.493514][ T9] cleanup_net+0x451/0xb10 [ 77.499076][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 77.509104][ T9] process_one_work+0x98d/0x1600 [ 77.516843][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.526511][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 77.533511][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 77.540247][ T9] worker_thread+0x64c/0x1120 [ 77.550187][ T9] ? process_one_work+0x1600/0x1600 [ 77.557856][ T9] kthread+0x3b1/0x4a0 [ 77.565362][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 77.570984][ T9] ret_from_fork+0x1f/0x30 [ 77.577989][ T9] Kernel panic - not syncing: panic_on_warn set ... [ 77.585908][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-rc7-syzkaller #0 [ 77.595209][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.607362][ T9] Workqueue: netns cleanup_net [ 77.612589][ T9] Call Trace: [ 77.616245][ T9] dump_stack+0x141/0x1d7 [ 77.621525][ T9] panic+0x306/0x73d [ 77.626373][ T9] ? __warn_printk+0xf3/0xf3 [ 77.631815][ T9] ? __warn.cold+0x1a/0x44 [ 77.637183][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 77.645001][ T9] __warn.cold+0x35/0x44 [ 77.650445][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 77.657122][ T9] report_bug+0x1bd/0x210 [ 77.662304][ T9] handle_bug+0x3c/0x60 [ 77.668741][ T9] exc_invalid_op+0x14/0x40 [ 77.674491][ T9] asm_exc_invalid_op+0x12/0x20 [ 77.681229][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 77.689157][ T9] 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 00 6c 6c 8a e8 8e 38 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 36 35 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 77.711787][ T9] RSP: 0018:ffffc90000ce7bc0 EFLAGS: 00010286 [ 77.718668][ T9] RAX: 0000000000000000 RBX: ffff888021766900 RCX: 0000000000000000 [ 77.727371][ T9] RDX: ffff888011568000 RSI: ffffffff815c5205 RDI: fffff5200019cf6a [ 77.739018][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 77.748025][ T9] R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffff8880188b8f20 [ 77.758602][ T9] R13: 0000000000000000 R14: ffff88801bec9580 R15: 0000000000000001 [ 77.769985][ T9] ? wake_up_klogd.part.0+0x8e/0xd0 [ 77.776681][ T9] ? vprintk_func+0x95/0x1e0 [ 77.783251][ T9] nf_unregister_net_hooks+0x117/0x160 [ 77.791374][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 77.800471][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 77.808521][ T9] cleanup_net+0x451/0xb10 [ 77.814474][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 77.820425][ T9] process_one_work+0x98d/0x1600 [ 77.826074][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.832808][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 77.838705][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 77.844298][ T9] worker_thread+0x64c/0x1120 [ 77.849199][ T9] ? process_one_work+0x1600/0x1600 [ 77.854576][ T9] kthread+0x3b1/0x4a0 [ 77.859012][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 77.864131][ T9] ret_from_fork+0x1f/0x30 [ 77.871005][ T9] Kernel Offset: disabled [ 77.876382][ T9] Rebooting in 86400 seconds..