[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.16' (ECDSA) to the list of known hosts. 2021/05/03 03:11:50 fuzzer started 2021/05/03 03:11:50 connecting to host at 10.128.0.169:37373 2021/05/03 03:11:50 checking machine... 2021/05/03 03:11:50 checking revisions... 2021/05/03 03:11:50 testing simple program... syzkaller login: [ 70.903185][ T8444] chnl_net:caif_netlink_parms(): no params data found [ 70.957173][ T8444] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.966352][ T8444] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.975205][ T8444] device bridge_slave_0 entered promiscuous mode [ 70.985848][ T8444] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.993150][ T8444] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.001089][ T8444] device bridge_slave_1 entered promiscuous mode [ 71.022771][ T8444] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.034727][ T8444] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.057051][ T8444] team0: Port device team_slave_0 added [ 71.064417][ T8444] team0: Port device team_slave_1 added [ 71.083007][ T8444] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.090118][ T8444] 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. [ 71.120594][ T8444] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.134960][ T8444] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.142145][ T8444] 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. [ 71.168403][ T8444] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.195182][ T8444] device hsr_slave_0 entered promiscuous mode [ 71.201960][ T8444] device hsr_slave_1 entered promiscuous mode [ 71.306928][ T8444] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.317742][ T8444] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.328120][ T8444] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.338190][ T8444] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.365330][ T8444] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.372646][ T8444] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.380509][ T8444] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.387777][ T8444] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.434501][ T8444] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.449011][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.460409][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.470346][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.480376][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 71.496201][ T8444] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.507842][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.516512][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.523738][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.537191][ T4878] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.546284][ T4878] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.553385][ T4878] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.575359][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.596084][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.604416][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.613869][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.623728][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.641520][ T8444] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.666254][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.674189][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.689797][ T8444] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.709185][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 71.729608][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 71.738042][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 71.746584][ T4104] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 71.758435][ T8444] device veth0_vlan entered promiscuous mode [ 71.771138][ T8444] device veth1_vlan entered promiscuous mode [ 71.792780][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.800755][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.810146][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 71.821170][ T8444] device veth0_macvtap entered promiscuous mode [ 71.834214][ T8444] device veth1_macvtap entered promiscuous mode [ 71.854552][ T8444] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 71.863382][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 71.874624][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 71.887580][ T8444] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 71.895318][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 71.904214][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 71.917394][ T8444] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.926610][ T8444] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.935509][ T8444] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 71.944422][ T8444] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.035318][ T280] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.046222][ T280] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.081809][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.102888][ T118] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.111229][ T118] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.121380][ T4901] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/03 03:11:53 building call list... executing program [ 72.781070][ T118] ------------[ cut here ]------------ [ 72.787039][ T118] hook not found, pf 3 num 0 [ 72.787682][ T118] WARNING: CPU: 1 PID: 118 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 72.808021][ T118] Modules linked in: [ 72.811952][ T118] CPU: 1 PID: 118 Comm: kworker/u4:2 Not tainted 5.12.0-next-20210503-syzkaller #0 [ 72.823547][ T118] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.835740][ T118] Workqueue: netns cleanup_net [ 72.840899][ T118] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 72.848444][ T118] 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 4d 6e 8a e8 18 71 8a 01 <0f> 0b e9 e5 00 00 00 e8 c9 d2 2c fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 72.870347][ T118] RSP: 0018:ffffc9000132fbc0 EFLAGS: 00010286 [ 72.878613][ T118] RAX: 0000000000000000 RBX: ffff8880250d9f00 RCX: 0000000000000000 [ 72.886743][ T118] RDX: ffff888012b60000 RSI: ffffffff815cc9f5 RDI: fffff52000265f6a [ 72.897793][ T118] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 72.905965][ T118] R10: ffffffff815c685e R11: 0000000000000000 R12: ffff888014c28f20 [ 72.914696][ T118] R13: 0000000000000000 R14: ffff8880220f3580 R15: 0000000000000001 [ 72.923390][ T118] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 72.932821][ T118] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.939661][ T118] CR2: 00007f46a00400e8 CR3: 000000001a74d000 CR4: 00000000001506f0 [ 72.948440][ T118] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.960065][ T118] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.968775][ T118] Call Trace: [ 72.972703][ T118] nf_unregister_net_hooks+0x117/0x160 [ 72.978315][ T118] arpt_unregister_table_pre_exit+0x67/0x80 [ 72.985151][ T118] ? arptable_filter_net_exit+0x20/0x20 [ 72.990909][ T118] cleanup_net+0x451/0xb10 [ 72.998159][ T118] ? ops_free_list.part.0+0x3d0/0x3d0 [ 73.003697][ T118] process_one_work+0x98d/0x1600 [ 73.008908][ T118] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.014969][ T118] ? rwlock_bug.part.0+0x90/0x90 [ 73.020236][ T118] ? _raw_spin_lock_irq+0x41/0x50 [ 73.026109][ T118] worker_thread+0x64c/0x1120 [ 73.030867][ T118] ? process_one_work+0x1600/0x1600 [ 73.049503][ T118] kthread+0x3b1/0x4a0 [ 73.054233][ T118] ? __kthread_bind_mask+0xc0/0xc0 [ 73.059608][ T118] ret_from_fork+0x1f/0x30 [ 73.065384][ T118] Kernel panic - not syncing: panic_on_warn set ... [ 73.072238][ T118] CPU: 0 PID: 118 Comm: kworker/u4:2 Not tainted 5.12.0-next-20210503-syzkaller #0 [ 73.081674][ T118] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.092301][ T118] Workqueue: netns cleanup_net [ 73.097088][ T118] Call Trace: [ 73.100391][ T118] dump_stack+0x141/0x1d7 [ 73.104765][ T118] panic+0x306/0x73d [ 73.108767][ T118] ? __warn_printk+0xf3/0xf3 [ 73.113389][ T118] ? __warn.cold+0x1a/0x44 [ 73.117829][ T118] ? __nf_unregister_net_hook+0x1eb/0x610 [ 73.123573][ T118] __warn.cold+0x35/0x44 [ 73.127841][ T118] ? __nf_unregister_net_hook+0x1eb/0x610 [ 73.133605][ T118] report_bug+0x1bd/0x210 [ 73.138047][ T118] handle_bug+0x3c/0x60 [ 73.142342][ T118] exc_invalid_op+0x14/0x40 [ 73.146959][ T118] asm_exc_invalid_op+0x12/0x20 [ 73.152004][ T118] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 73.158343][ T118] 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 4d 6e 8a e8 18 71 8a 01 <0f> 0b e9 e5 00 00 00 e8 c9 d2 2c fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 73.178131][ T118] RSP: 0018:ffffc9000132fbc0 EFLAGS: 00010286 [ 73.184321][ T118] RAX: 0000000000000000 RBX: ffff8880250d9f00 RCX: 0000000000000000 [ 73.192472][ T118] RDX: ffff888012b60000 RSI: ffffffff815cc9f5 RDI: fffff52000265f6a [ 73.200450][ T118] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 73.208539][ T118] R10: ffffffff815c685e R11: 0000000000000000 R12: ffff888014c28f20 [ 73.216530][ T118] R13: 0000000000000000 R14: ffff8880220f3580 R15: 0000000000000001 [ 73.224530][ T118] ? wake_up_klogd.part.0+0x8e/0xd0 [ 73.229753][ T118] ? vprintk+0x95/0x260 [ 73.233941][ T118] nf_unregister_net_hooks+0x117/0x160 [ 73.239419][ T118] arpt_unregister_table_pre_exit+0x67/0x80 [ 73.245345][ T118] ? arptable_filter_net_exit+0x20/0x20 [ 73.250903][ T118] cleanup_net+0x451/0xb10 [ 73.255334][ T118] ? ops_free_list.part.0+0x3d0/0x3d0 [ 73.260739][ T118] process_one_work+0x98d/0x1600 [ 73.265707][ T118] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.271104][ T118] ? rwlock_bug.part.0+0x90/0x90 [ 73.276056][ T118] ? _raw_spin_lock_irq+0x41/0x50 [ 73.281105][ T118] worker_thread+0x64c/0x1120 [ 73.285812][ T118] ? process_one_work+0x1600/0x1600 [ 73.291027][ T118] kthread+0x3b1/0x4a0 [ 73.295108][ T118] ? __kthread_bind_mask+0xc0/0xc0 [ 73.300249][ T118] ret_from_fork+0x1f/0x30 [ 73.306180][ T118] Kernel Offset: disabled [ 73.310756][ T118] Rebooting in 86400 seconds..