[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ 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 '10.128.0.10' (ECDSA) to the list of known hosts. 2021/05/07 10:59:20 fuzzer started 2021/05/07 10:59:20 connecting to host at 10.128.0.169:37301 2021/05/07 10:59:20 checking machine... 2021/05/07 10:59:20 checking revisions... 2021/05/07 10:59:20 testing simple program... syzkaller login: [ 57.131824][ T8435] chnl_net:caif_netlink_parms(): no params data found [ 57.184233][ T8435] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.193276][ T8435] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.202327][ T8435] device bridge_slave_0 entered promiscuous mode [ 57.212597][ T8435] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.220041][ T8435] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.227980][ T8435] device bridge_slave_1 entered promiscuous mode [ 57.250403][ T8435] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.261539][ T8435] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.284454][ T8435] team0: Port device team_slave_0 added [ 57.293539][ T8435] team0: Port device team_slave_1 added [ 57.309365][ T8435] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 57.317425][ T8435] 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. [ 57.343541][ T8435] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 57.356610][ T8435] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 57.363618][ T8435] 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. [ 57.390534][ T8435] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 57.413787][ T8435] device hsr_slave_0 entered promiscuous mode [ 57.421844][ T8435] device hsr_slave_1 entered promiscuous mode [ 57.503250][ T8435] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.513084][ T8435] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.522571][ T8435] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.532974][ T8435] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.553623][ T8435] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.560901][ T8435] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.568738][ T8435] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.576361][ T8435] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.613508][ T8435] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.626051][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.637319][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.646392][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.654889][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 57.667287][ T8435] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.677826][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.687032][ T20] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.694124][ T20] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.710147][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.718810][ T20] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.725899][ T20] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.737447][ T8655] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.746716][ T8655] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.762637][ T8435] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 57.774024][ T8435] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 57.787316][ T3156] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.796303][ T3156] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.805089][ T3156] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.813783][ T3156] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.830087][ T8655] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.838249][ T8655] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.849077][ T8435] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.867685][ T8655] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 57.884660][ T8658] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.893136][ T8658] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 57.901475][ T8658] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 57.913110][ T8435] device veth0_vlan entered promiscuous mode [ 57.924289][ T8435] device veth1_vlan entered promiscuous mode [ 57.943812][ T8655] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 57.952298][ T8655] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 57.961655][ T8655] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 57.973789][ T8435] device veth0_macvtap entered promiscuous mode [ 57.984112][ T8435] device veth1_macvtap entered promiscuous mode [ 57.999211][ T8435] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 58.008890][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 58.019044][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 58.030957][ T8435] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 58.040959][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 58.051527][ T8435] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.060467][ T8435] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.069133][ T8435] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.078512][ T8435] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.145692][ T383] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.163340][ T383] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.191502][ T4821] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 58.205935][ T383] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.214185][ T383] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.223309][ T4821] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/07 10:59:23 building call list... executing program [ 58.784306][ T25] ------------[ cut here ]------------ [ 58.792256][ T25] hook not found, pf 3 num 0 [ 58.792789][ T25] WARNING: CPU: 0 PID: 25 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 58.812705][ T25] Modules linked in: [ 58.816701][ T25] CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 58.826241][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.838311][ T25] Workqueue: netns cleanup_net [ 58.843846][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 58.851967][ T25] 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 99 6e 8a e8 18 43 8a 01 <0f> 0b e9 e5 00 00 00 e8 f9 c5 2a fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 58.874537][ T25] RSP: 0018:ffffc90000dffbc0 EFLAGS: 00010286 [ 58.882596][ T25] RAX: 0000000000000000 RBX: ffff88802722de00 RCX: 0000000000000000 [ 58.892287][ T25] RDX: ffff88801241b880 RSI: ffffffff815cc9a5 RDI: fffff520001bff6a [ 58.901209][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 58.909181][ T25] R10: ffffffff815c680e R11: 0000000000000000 R12: ffff88802ecc8f20 [ 58.919186][ T25] R13: 0000000000000000 R14: ffff888027062980 R15: 0000000000000001 [ 58.927954][ T25] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 58.939032][ T25] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.946324][ T25] CR2: 00007f0c23eba070 CR3: 00000000345e8000 CR4: 0000000000350ef0 [ 58.956044][ T25] Call Trace: [ 58.959332][ T25] nf_unregister_net_hooks+0x117/0x160 [ 58.968485][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 58.976248][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 58.983657][ T25] cleanup_net+0x451/0xb10 [ 58.988088][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 58.995505][ T25] process_one_work+0x98d/0x1600 [ 59.001494][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 59.006978][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 59.014388][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 59.019431][ T25] worker_thread+0x64c/0x1120 [ 59.025142][ T25] ? __kthread_parkme+0x13f/0x1e0 [ 59.031913][ T25] ? process_one_work+0x1600/0x1600 [ 59.037123][ T25] kthread+0x3b1/0x4a0 [ 59.043719][ T25] ? __kthread_bind_mask+0xc0/0xc0 [ 59.048842][ T25] ret_from_fork+0x1f/0x30 [ 59.054455][ T25] Kernel panic - not syncing: panic_on_warn set ... [ 59.061034][ T25] CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 59.069008][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.079055][ T25] Workqueue: netns cleanup_net [ 59.083821][ T25] Call Trace: [ 59.087090][ T25] dump_stack+0x141/0x1d7 [ 59.091425][ T25] panic+0x306/0x73d [ 59.095317][ T25] ? __warn_printk+0xf3/0xf3 [ 59.099917][ T25] ? __warn.cold+0x1a/0x44 [ 59.104331][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 59.110052][ T25] __warn.cold+0x35/0x44 [ 59.114296][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 59.120015][ T25] report_bug+0x1bd/0x210 [ 59.124347][ T25] handle_bug+0x3c/0x60 [ 59.128500][ T25] exc_invalid_op+0x14/0x40 [ 59.133000][ T25] asm_exc_invalid_op+0x12/0x20 [ 59.137844][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 59.144175][ T25] 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 99 6e 8a e8 18 43 8a 01 <0f> 0b e9 e5 00 00 00 e8 f9 c5 2a fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 59.163780][ T25] RSP: 0018:ffffc90000dffbc0 EFLAGS: 00010286 [ 59.169842][ T25] RAX: 0000000000000000 RBX: ffff88802722de00 RCX: 0000000000000000 [ 59.177810][ T25] RDX: ffff88801241b880 RSI: ffffffff815cc9a5 RDI: fffff520001bff6a [ 59.185776][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 59.193740][ T25] R10: ffffffff815c680e R11: 0000000000000000 R12: ffff88802ecc8f20 [ 59.201706][ T25] R13: 0000000000000000 R14: ffff888027062980 R15: 0000000000000001 [ 59.209679][ T25] ? wake_up_klogd.part.0+0x8e/0xd0 [ 59.214888][ T25] ? vprintk+0x95/0x260 [ 59.219057][ T25] nf_unregister_net_hooks+0x117/0x160 [ 59.224606][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 59.230508][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 59.236055][ T25] cleanup_net+0x451/0xb10 [ 59.240473][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 59.245859][ T25] process_one_work+0x98d/0x1600 [ 59.250808][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 59.256188][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 59.261123][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 59.266157][ T25] worker_thread+0x64c/0x1120 [ 59.270847][ T25] ? __kthread_parkme+0x13f/0x1e0 [ 59.275868][ T25] ? process_one_work+0x1600/0x1600 [ 59.281068][ T25] kthread+0x3b1/0x4a0 [ 59.285135][ T25] ? __kthread_bind_mask+0xc0/0xc0 [ 59.290247][ T25] ret_from_fork+0x1f/0x30 [ 59.298199][ T25] Kernel Offset: disabled [ 59.302594][ T25] Rebooting in 86400 seconds..