Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.28' (ECDSA) to the list of known hosts. 2021/05/06 15:56:17 fuzzer started 2021/05/06 15:56:17 connecting to host at 10.128.0.169:41645 2021/05/06 15:56:17 checking machine... 2021/05/06 15:56:17 checking revisions... 2021/05/06 15:56:17 testing simple program... syzkaller login: [ 73.920676][ T8447] chnl_net:caif_netlink_parms(): no params data found [ 73.977190][ T8447] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.986492][ T8447] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.995513][ T8447] device bridge_slave_0 entered promiscuous mode [ 74.007109][ T8447] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.015242][ T8447] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.025727][ T8447] device bridge_slave_1 entered promiscuous mode [ 74.047446][ T8447] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.061414][ T8447] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.085115][ T8447] team0: Port device team_slave_0 added [ 74.093024][ T8447] team0: Port device team_slave_1 added [ 74.111483][ T8447] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.120283][ T8447] 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. [ 74.147520][ T8447] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.161760][ T8447] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.169505][ T8447] 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. [ 74.196555][ T8447] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.224159][ T8447] device hsr_slave_0 entered promiscuous mode [ 74.231826][ T8447] device hsr_slave_1 entered promiscuous mode [ 74.337671][ T8447] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.348194][ T8447] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.358916][ T8447] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.369299][ T8447] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.395634][ T8447] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.403070][ T8447] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.411275][ T8447] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.418362][ T8447] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.465335][ T8447] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.478095][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.491084][ T4843] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.501353][ T4843] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.511792][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 74.525712][ T8447] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.538182][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.547997][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.555616][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.569652][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.578247][ T4843] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.585522][ T4843] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.606588][ T3148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.616971][ T3148] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.630125][ T3148] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.644545][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.655968][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.668382][ T8447] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.690249][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.697747][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.713319][ T8447] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.733756][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.757290][ T8447] device veth0_vlan entered promiscuous mode [ 74.765057][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.774153][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.783089][ T4843] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.797619][ T8447] device veth1_vlan entered promiscuous mode [ 74.822160][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.832370][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.841488][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.854384][ T8447] device veth0_macvtap entered promiscuous mode [ 74.864820][ T8447] device veth1_macvtap entered promiscuous mode [ 74.884780][ T8447] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.894381][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.906122][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.920834][ T8447] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.928893][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.937889][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.950774][ T8447] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.961501][ T8447] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.971036][ T8447] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.979902][ T8447] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.072746][ T8398] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.090761][ T8398] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.111922][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 75.136813][ T8398] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.146234][ T8398] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.156867][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/06 15:56:20 building call list... [ 75.831249][ T28] ------------[ cut here ]------------ [ 75.837101][ T28] hook not found, pf 3 num 0 [ 75.837710][ T28] WARNING: CPU: 1 PID: 28 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 75.858249][ T28] Modules linked in: [ 75.865611][ T28] CPU: 1 PID: 28 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 75.876641][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.887954][ T28] Workqueue: netns cleanup_net [ 75.895331][ T28] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 75.904718][ T28] 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 d8 6d 8a e8 50 5b 8a 01 <0f> 0b e9 e5 00 00 00 e8 69 17 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 75.930553][ T28] RSP: 0018:ffffc90000e2fbc0 EFLAGS: 00010286 [ 75.936780][ T28] RAX: 0000000000000000 RBX: ffff888149b8fe00 RCX: 0000000000000000 [ 75.947905][ T28] RDX: ffff888015771c40 RSI: ffffffff815c8ba5 RDI: fffff520001c5f6a [ 75.957130][ T28] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 75.968124][ T28] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801bfb8f20 [ 75.977310][ T28] R13: 0000000000000000 R14: ffff888014340980 R15: 0000000000000001 [ 75.991351][ T28] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 76.002202][ T28] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.011848][ T28] CR2: 00007fe12895a000 CR3: 00000000166f0000 CR4: 00000000001506e0 [ 76.020923][ T28] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.031648][ T28] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.040757][ T28] Call Trace: [ 76.044072][ T28] nf_unregister_net_hooks+0x117/0x160 [ 76.052512][ T28] arpt_unregister_table_pre_exit+0x67/0x80 [ 76.072925][ T28] ? arptable_filter_net_exit+0x20/0x20 [ 76.081425][ T28] cleanup_net+0x451/0xb10 [ 76.085908][ T28] ? ops_free_list.part.0+0x3d0/0x3d0 [ 76.094762][ T28] process_one_work+0x98d/0x1600 [ 76.101116][ T28] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.106803][ T28] ? rwlock_bug.part.0+0x90/0x90 [ 76.115343][ T28] ? _raw_spin_lock_irq+0x41/0x50 [ 76.121655][ T28] worker_thread+0x64c/0x1120 [ 76.126603][ T28] ? __kthread_parkme+0x13f/0x1e0 [ 76.134664][ T28] ? process_one_work+0x1600/0x1600 [ 76.143215][ T28] kthread+0x3b1/0x4a0 [ 76.147331][ T28] ? __kthread_bind_mask+0xc0/0xc0 [ 76.155428][ T28] ret_from_fork+0x1f/0x30 [ 76.161207][ T28] Kernel panic - not syncing: panic_on_warn set ... [ 76.167810][ T28] CPU: 1 PID: 28 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 76.176069][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.186400][ T28] Workqueue: netns cleanup_net [ 76.191289][ T28] Call Trace: [ 76.194692][ T28] dump_stack+0x141/0x1d7 [ 76.199038][ T28] panic+0x306/0x73d [ 76.203034][ T28] ? __warn_printk+0xf3/0xf3 [ 76.207837][ T28] ? __warn.cold+0x1a/0x44 [ 76.212277][ T28] ? __nf_unregister_net_hook+0x1eb/0x610 [ 76.218114][ T28] __warn.cold+0x35/0x44 [ 76.222814][ T28] ? __nf_unregister_net_hook+0x1eb/0x610 [ 76.228667][ T28] report_bug+0x1bd/0x210 [ 76.233195][ T28] handle_bug+0x3c/0x60 [ 76.237368][ T28] exc_invalid_op+0x14/0x40 [ 76.241882][ T28] asm_exc_invalid_op+0x12/0x20 [ 76.246858][ T28] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 76.253293][ T28] 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 d8 6d 8a e8 50 5b 8a 01 <0f> 0b e9 e5 00 00 00 e8 69 17 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 76.273092][ T28] RSP: 0018:ffffc90000e2fbc0 EFLAGS: 00010286 [ 76.279264][ T28] RAX: 0000000000000000 RBX: ffff888149b8fe00 RCX: 0000000000000000 [ 76.287260][ T28] RDX: ffff888015771c40 RSI: ffffffff815c8ba5 RDI: fffff520001c5f6a [ 76.295331][ T28] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 76.303424][ T28] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801bfb8f20 [ 76.311405][ T28] R13: 0000000000000000 R14: ffff888014340980 R15: 0000000000000001 [ 76.319550][ T28] ? wake_up_klogd.part.0+0x8e/0xd0 [ 76.324773][ T28] ? vprintk+0x95/0x260 [ 76.328970][ T28] nf_unregister_net_hooks+0x117/0x160 [ 76.334548][ T28] arpt_unregister_table_pre_exit+0x67/0x80 [ 76.340550][ T28] ? arptable_filter_net_exit+0x20/0x20 [ 76.346308][ T28] cleanup_net+0x451/0xb10 [ 76.351103][ T28] ? ops_free_list.part.0+0x3d0/0x3d0 [ 76.356773][ T28] process_one_work+0x98d/0x1600 [ 76.362264][ T28] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.367723][ T28] ? rwlock_bug.part.0+0x90/0x90 [ 76.372767][ T28] ? _raw_spin_lock_irq+0x41/0x50 [ 76.377935][ T28] worker_thread+0x64c/0x1120 [ 76.382771][ T28] ? __kthread_parkme+0x13f/0x1e0 [ 76.387926][ T28] ? process_one_work+0x1600/0x1600 [ 76.393165][ T28] kthread+0x3b1/0x4a0 [ 76.397383][ T28] ? __kthread_bind_mask+0xc0/0xc0 [ 76.402613][ T28] ret_from_fork+0x1f/0x30 [ 76.408927][ T28] Kernel Offset: disabled [ 76.413535][ T28] Rebooting in 86400 seconds..