[ OK ] Reached target Multi-User System. [ 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... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.83' (ECDSA) to the list of known hosts. 2021/05/03 15:30:57 fuzzer started 2021/05/03 15:30:57 connecting to host at 10.128.0.169:41241 2021/05/03 15:30:57 checking machine... 2021/05/03 15:30:57 checking revisions... 2021/05/03 15:30:57 testing simple program... syzkaller login: [ 75.516441][ T8433] chnl_net:caif_netlink_parms(): no params data found [ 75.576417][ T8433] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.584156][ T8433] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.593822][ T8433] device bridge_slave_0 entered promiscuous mode [ 75.604333][ T8433] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.612818][ T8433] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.622351][ T8433] device bridge_slave_1 entered promiscuous mode [ 75.646180][ T8433] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.659105][ T8433] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.685116][ T8433] team0: Port device team_slave_0 added [ 75.693024][ T8433] team0: Port device team_slave_1 added [ 75.711893][ T8433] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.719174][ T8433] 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. [ 75.747044][ T8433] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.760426][ T8433] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.767818][ T8433] 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. [ 75.795117][ T8433] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.829257][ T8433] device hsr_slave_0 entered promiscuous mode [ 75.837741][ T8433] device hsr_slave_1 entered promiscuous mode [ 75.948985][ T8433] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.961690][ T8433] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.972525][ T8433] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.982396][ T8433] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.010959][ T8433] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.018612][ T8433] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.026924][ T8433] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.034697][ T8433] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.085383][ T8433] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.100465][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.116243][ T3301] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.125859][ T3301] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.140592][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.157112][ T8433] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.171005][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.181294][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.188746][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.204114][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.214295][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.221462][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.244141][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.254009][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.267965][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.281375][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.294171][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.307478][ T8433] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.330925][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.339208][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.353220][ T8433] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.376065][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.396493][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.407203][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.416389][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.431598][ T8433] device veth0_vlan entered promiscuous mode [ 76.446277][ T8433] device veth1_vlan entered promiscuous mode [ 76.469911][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.480034][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.489960][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.503197][ T8433] device veth0_macvtap entered promiscuous mode [ 76.512604][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.524495][ T8433] device veth1_macvtap entered promiscuous mode [ 76.544491][ T8433] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.553131][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.563581][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.577329][ T8433] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.586815][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.595754][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.607937][ T8433] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.622297][ T8433] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.635079][ T8433] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.646871][ T8433] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.745732][ T224] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.755290][ T224] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.773233][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 76.811462][ T224] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.820275][ T224] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.833387][ T3301] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/03 15:31:00 building call list... [ 77.468275][ T224] ------------[ cut here ]------------ [ 77.476907][ T224] hook not found, pf 3 num 0 [ 77.477545][ T224] WARNING: CPU: 1 PID: 224 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 77.495521][ T224] Modules linked in: [ 77.499836][ T224] CPU: 1 PID: 224 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 77.509541][ T224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.522148][ T224] Workqueue: netns cleanup_net [ 77.530018][ T224] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 77.538314][ T224] 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 40 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 77.560406][ T224] RSP: 0018:ffffc9000178fbc0 EFLAGS: 00010286 [ 77.567191][ T224] RAX: 0000000000000000 RBX: ffff888021b56400 RCX: 0000000000000000 [ 77.577621][ T224] RDX: ffff8880128354c0 RSI: ffffffff815c8ba5 RDI: fffff520002f1f6a [ 77.586754][ T224] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 77.595522][ T224] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802db68f20 [ 77.604277][ T224] R13: 0000000000000000 R14: ffff88801ec20900 R15: 0000000000000001 [ 77.613760][ T224] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 77.623467][ T224] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.631124][ T224] CR2: 0000563c6b380160 CR3: 000000001d865000 CR4: 00000000001506e0 [ 77.639583][ T224] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.648116][ T224] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.658884][ T224] Call Trace: [ 77.663420][ T224] nf_unregister_net_hooks+0x117/0x160 [ 77.669011][ T224] arpt_unregister_table_pre_exit+0x67/0x80 [ 77.675423][ T224] ? arptable_filter_net_exit+0x20/0x20 [ 77.681343][ T224] cleanup_net+0x451/0xb10 [ 77.686158][ T224] ? ops_free_list.part.0+0x3d0/0x3d0 [ 77.693159][ T224] process_one_work+0x98d/0x1600 [ 77.698597][ T224] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.705447][ T224] ? rwlock_bug.part.0+0x90/0x90 [ 77.710503][ T224] ? _raw_spin_lock_irq+0x41/0x50 [ 77.716899][ T224] worker_thread+0x64c/0x1120 [ 77.722433][ T224] ? process_one_work+0x1600/0x1600 [ 77.727921][ T224] kthread+0x3b1/0x4a0 [ 77.741191][ T224] ? __kthread_bind_mask+0xc0/0xc0 [ 77.746792][ T224] ret_from_fork+0x1f/0x30 [ 77.752664][ T224] Kernel panic - not syncing: panic_on_warn set ... [ 77.759570][ T224] CPU: 1 PID: 224 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 77.767935][ T224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.778281][ T224] Workqueue: netns cleanup_net [ 77.783178][ T224] Call Trace: [ 77.786726][ T224] dump_stack+0x141/0x1d7 [ 77.791347][ T224] panic+0x306/0x73d [ 77.795268][ T224] ? __warn_printk+0xf3/0xf3 [ 77.800147][ T224] ? __warn.cold+0x1a/0x44 [ 77.805126][ T224] ? __nf_unregister_net_hook+0x1eb/0x610 [ 77.811004][ T224] __warn.cold+0x35/0x44 [ 77.815448][ T224] ? __nf_unregister_net_hook+0x1eb/0x610 [ 77.821449][ T224] report_bug+0x1bd/0x210 [ 77.826174][ T224] handle_bug+0x3c/0x60 [ 77.830435][ T224] exc_invalid_op+0x14/0x40 [ 77.835068][ T224] asm_exc_invalid_op+0x12/0x20 [ 77.839940][ T224] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 77.846485][ T224] 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 40 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 77.866432][ T224] RSP: 0018:ffffc9000178fbc0 EFLAGS: 00010286 [ 77.872886][ T224] RAX: 0000000000000000 RBX: ffff888021b56400 RCX: 0000000000000000 [ 77.880956][ T224] RDX: ffff8880128354c0 RSI: ffffffff815c8ba5 RDI: fffff520002f1f6a [ 77.889287][ T224] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 77.897553][ T224] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802db68f20 [ 77.906435][ T224] R13: 0000000000000000 R14: ffff88801ec20900 R15: 0000000000000001 [ 77.914521][ T224] ? wake_up_klogd.part.0+0x8e/0xd0 [ 77.920011][ T224] ? vprintk+0x95/0x260 [ 77.924302][ T224] nf_unregister_net_hooks+0x117/0x160 [ 77.929959][ T224] arpt_unregister_table_pre_exit+0x67/0x80 [ 77.935886][ T224] ? arptable_filter_net_exit+0x20/0x20 [ 77.941559][ T224] cleanup_net+0x451/0xb10 [ 77.946086][ T224] ? ops_free_list.part.0+0x3d0/0x3d0 [ 77.952034][ T224] process_one_work+0x98d/0x1600 [ 77.957304][ T224] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.963105][ T224] ? rwlock_bug.part.0+0x90/0x90 [ 77.968332][ T224] ? _raw_spin_lock_irq+0x41/0x50 [ 77.973510][ T224] worker_thread+0x64c/0x1120 [ 77.978491][ T224] ? process_one_work+0x1600/0x1600 [ 77.983974][ T224] kthread+0x3b1/0x4a0 [ 77.988451][ T224] ? __kthread_bind_mask+0xc0/0xc0 [ 77.993862][ T224] ret_from_fork+0x1f/0x30 [ 78.000750][ T224] Kernel Offset: disabled [ 78.005969][ T224] Rebooting in 86400 seconds..