Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.46' (ECDSA) to the list of known hosts. 2021/05/04 22:35:44 fuzzer started 2021/05/04 22:35:44 connecting to host at 10.128.0.169:35803 2021/05/04 22:35:44 checking machine... 2021/05/04 22:35:44 checking revisions... 2021/05/04 22:35:44 testing simple program... syzkaller login: [ 57.140285][ T8391] chnl_net:caif_netlink_parms(): no params data found [ 57.189360][ T8391] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.196745][ T8391] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.205514][ T8391] device bridge_slave_0 entered promiscuous mode [ 57.215075][ T8391] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.222882][ T8391] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.230712][ T8391] device bridge_slave_1 entered promiscuous mode [ 57.248734][ T8391] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.260400][ T8391] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.280064][ T8391] team0: Port device team_slave_0 added [ 57.288328][ T8391] team0: Port device team_slave_1 added [ 57.303009][ T8391] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 57.310291][ T8391] 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. [ 57.336263][ T8391] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 57.348422][ T8391] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 57.356675][ T8391] 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. [ 57.384261][ T8391] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 57.407228][ T8391] device hsr_slave_0 entered promiscuous mode [ 57.413812][ T8391] device hsr_slave_1 entered promiscuous mode [ 57.505111][ T8391] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.515427][ T8391] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.524568][ T8391] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.533078][ T8391] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.553037][ T8391] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.560291][ T8391] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.568147][ T8391] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.575248][ T8391] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.611635][ T8391] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.626704][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.637229][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.645924][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.654515][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 57.667716][ T8391] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.678593][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.687695][ T3796] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.694782][ T3796] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.704999][ T8612] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.714211][ T8612] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.721236][ T8612] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.745675][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.754908][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.763850][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.771841][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.782250][ T8391] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.791437][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.810810][ T8391] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.819373][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.827566][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.868003][ T3796] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 57.904887][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.925793][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 57.943307][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 57.955142][ T8391] device veth0_vlan entered promiscuous mode [ 57.969456][ T8391] device veth1_vlan entered promiscuous mode [ 57.995126][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 58.008430][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 58.018289][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 58.029380][ T8391] device veth0_macvtap entered promiscuous mode [ 58.039403][ T8391] device veth1_macvtap entered promiscuous mode [ 58.055583][ T8391] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 58.063666][ T8614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 58.073899][ T8614] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 58.084837][ T8391] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 58.093619][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 58.105943][ T8391] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.115186][ T8391] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.124236][ T8391] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.133775][ T8391] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.195461][ T124] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.214295][ T124] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.225715][ T4469] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.227592][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 58.242036][ T4469] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.258591][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/04 22:35:47 building call list... executing program [ 58.786219][ T124] ------------[ cut here ]------------ [ 58.792279][ T124] hook not found, pf 3 num 0 [ 58.795637][ T124] WARNING: CPU: 0 PID: 124 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 58.811277][ T124] Modules linked in: [ 58.817463][ T124] CPU: 0 PID: 124 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 58.826173][ T124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.838803][ T124] Workqueue: netns cleanup_net [ 58.844296][ T124] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 58.850633][ T124] 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 7d 6e 8a e8 66 42 8a 01 <0f> 0b e9 e5 00 00 00 e8 79 d4 2b fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 58.872372][ T124] RSP: 0018:ffffc90000e7fbc0 EFLAGS: 00010286 [ 58.903035][ T124] RAX: 0000000000000000 RBX: ffff88814732dc00 RCX: 0000000000000000 [ 58.911406][ T124] RDX: ffff8880159c3880 RSI: ffffffff815caaf5 RDI: fffff520001cff6a [ 58.932564][ T124] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 58.940724][ T124] R10: ffffffff815c495e R11: 0000000000000000 R12: ffff888017138f20 [ 58.950836][ T124] R13: 0000000000000000 R14: ffff888016c0c980 R15: 0000000000000001 [ 58.959972][ T124] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 58.970675][ T124] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.977939][ T124] CR2: 00007f84cb1ae020 CR3: 000000003278d000 CR4: 0000000000350ee0 [ 58.987655][ T124] Call Trace: [ 58.990945][ T124] nf_unregister_net_hooks+0x117/0x160 [ 58.997764][ T124] arpt_unregister_table_pre_exit+0x67/0x80 [ 59.005704][ T124] ? arptable_filter_net_exit+0x20/0x20 [ 59.011257][ T124] cleanup_net+0x451/0xb10 [ 59.017153][ T124] ? ops_free_list.part.0+0x3d0/0x3d0 [ 59.025184][ T124] process_one_work+0x98d/0x1600 [ 59.030231][ T124] ? pwq_dec_nr_in_flight+0x320/0x320 [ 59.037357][ T124] ? rwlock_bug.part.0+0x90/0x90 [ 59.042319][ T124] ? _raw_spin_lock_irq+0x41/0x50 [ 59.049427][ T124] worker_thread+0x64c/0x1120 [ 59.054768][ T124] ? process_one_work+0x1600/0x1600 [ 59.059981][ T124] kthread+0x3b1/0x4a0 [ 59.066142][ T124] ? __kthread_bind_mask+0xc0/0xc0 [ 59.071263][ T124] ret_from_fork+0x1f/0x30 [ 59.076828][ T124] Kernel panic - not syncing: panic_on_warn set ... [ 59.083424][ T124] CPU: 1 PID: 124 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 59.091486][ T124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.101539][ T124] Workqueue: netns cleanup_net [ 59.106307][ T124] Call Trace: [ 59.109581][ T124] dump_stack+0x141/0x1d7 [ 59.113916][ T124] panic+0x306/0x73d [ 59.117817][ T124] ? __warn_printk+0xf3/0xf3 [ 59.122429][ T124] ? __warn.cold+0x1a/0x44 [ 59.126848][ T124] ? __nf_unregister_net_hook+0x1eb/0x610 [ 59.132564][ T124] __warn.cold+0x35/0x44 [ 59.136798][ T124] ? __nf_unregister_net_hook+0x1eb/0x610 [ 59.142507][ T124] report_bug+0x1bd/0x210 [ 59.146830][ T124] handle_bug+0x3c/0x60 [ 59.150972][ T124] exc_invalid_op+0x14/0x40 [ 59.155467][ T124] asm_exc_invalid_op+0x12/0x20 [ 59.160309][ T124] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 59.166629][ T124] 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 7d 6e 8a e8 66 42 8a 01 <0f> 0b e9 e5 00 00 00 e8 79 d4 2b fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 59.186228][ T124] RSP: 0018:ffffc90000e7fbc0 EFLAGS: 00010286 [ 59.192284][ T124] RAX: 0000000000000000 RBX: ffff88814732dc00 RCX: 0000000000000000 [ 59.200242][ T124] RDX: ffff8880159c3880 RSI: ffffffff815caaf5 RDI: fffff520001cff6a [ 59.208203][ T124] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 59.216161][ T124] R10: ffffffff815c495e R11: 0000000000000000 R12: ffff888017138f20 [ 59.224117][ T124] R13: 0000000000000000 R14: ffff888016c0c980 R15: 0000000000000001 [ 59.232081][ T124] ? wake_up_klogd.part.0+0x8e/0xd0 [ 59.237277][ T124] ? vprintk+0x95/0x260 [ 59.241433][ T124] nf_unregister_net_hooks+0x117/0x160 [ 59.246884][ T124] arpt_unregister_table_pre_exit+0x67/0x80 [ 59.252769][ T124] ? arptable_filter_net_exit+0x20/0x20 [ 59.258305][ T124] cleanup_net+0x451/0xb10 [ 59.262717][ T124] ? ops_free_list.part.0+0x3d0/0x3d0 [ 59.268086][ T124] process_one_work+0x98d/0x1600 [ 59.273021][ T124] ? pwq_dec_nr_in_flight+0x320/0x320 [ 59.278389][ T124] ? rwlock_bug.part.0+0x90/0x90 [ 59.283324][ T124] ? _raw_spin_lock_irq+0x41/0x50 [ 59.288346][ T124] worker_thread+0x64c/0x1120 [ 59.293025][ T124] ? process_one_work+0x1600/0x1600 [ 59.298215][ T124] kthread+0x3b1/0x4a0 [ 59.302274][ T124] ? __kthread_bind_mask+0xc0/0xc0 [ 59.307374][ T124] ret_from_fork+0x1f/0x30 [ 59.315723][ T124] Kernel Offset: disabled [ 59.320540][ T124] Rebooting in 86400 seconds..