[ 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 '10.128.0.153' (ECDSA) to the list of known hosts. 2021/04/29 23:32:21 fuzzer started 2021/04/29 23:32:22 connecting to host at 10.128.0.169:41191 2021/04/29 23:32:22 checking machine... 2021/04/29 23:32:22 checking revisions... 2021/04/29 23:32:22 testing simple program... syzkaller login: [ 72.832094][ T8425] chnl_net:caif_netlink_parms(): no params data found [ 72.940828][ T8425] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.951323][ T8425] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.960728][ T8425] device bridge_slave_0 entered promiscuous mode [ 72.971304][ T8425] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.980268][ T8425] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.989430][ T8425] device bridge_slave_1 entered promiscuous mode [ 73.011826][ T8425] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.024727][ T8425] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.047204][ T8425] team0: Port device team_slave_0 added [ 73.054794][ T8425] team0: Port device team_slave_1 added [ 73.072446][ T8425] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.080020][ T8425] 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. [ 73.107581][ T8425] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.121511][ T8425] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.128959][ T8425] 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. [ 73.157301][ T8425] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.183978][ T8425] device hsr_slave_0 entered promiscuous mode [ 73.190783][ T8425] device hsr_slave_1 entered promiscuous mode [ 73.311251][ T8425] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.324644][ T8425] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.335150][ T8425] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.347004][ T8425] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.375900][ T8425] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.383595][ T8425] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.392098][ T8425] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.399859][ T8425] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.448984][ T8425] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.465296][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.477748][ T2939] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.488498][ T2939] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.497574][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 73.511567][ T8425] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.524315][ T4826] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.534241][ T4826] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.541297][ T4826] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.565042][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.575079][ T2939] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.582254][ T2939] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.591402][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.611737][ T8425] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 73.622948][ T8425] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 73.640029][ T8646] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.649401][ T8646] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.658711][ T8646] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.668786][ T8646] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.678516][ T8646] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.701201][ T8425] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.709482][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.717680][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.739886][ T4826] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.761415][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.770216][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.779323][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.790893][ T8425] device veth0_vlan entered promiscuous mode [ 73.804898][ T8425] device veth1_vlan entered promiscuous mode [ 73.814991][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.840155][ T8425] device veth0_macvtap entered promiscuous mode [ 73.849491][ T8646] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 73.860203][ T8646] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.870512][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.882248][ T8425] device veth1_macvtap entered promiscuous mode [ 73.899631][ T8425] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.908102][ T8646] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 73.917627][ T8646] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 73.926760][ T8646] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.941333][ T8425] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.950180][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.959986][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.971618][ T8425] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.981562][ T8425] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.991163][ T8425] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.000205][ T8425] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.092417][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.103199][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.116341][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.154640][ T28] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.169961][ T28] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.180751][ T4826] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program 2021/04/29 23:32:25 building call list... [ 74.832561][ T9] ------------[ cut here ]------------ [ 74.839022][ T9] hook not found, pf 3 num 0 [ 74.839652][ T9] WARNING: CPU: 1 PID: 9 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 74.857256][ T9] Modules linked in: [ 74.861382][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 74.875021][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.886820][ T9] Workqueue: netns cleanup_net [ 74.891638][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 74.899969][ T9] 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 [ 74.921052][ T9] RSP: 0000:ffffc90000ce7bc0 EFLAGS: 00010286 [ 74.929857][ T9] RAX: 0000000000000000 RBX: ffff8880226b8000 RCX: 0000000000000000 [ 74.940455][ T9] RDX: ffff888011d78000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 74.949960][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 74.969087][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802eae8f20 [ 74.978341][ T9] R13: 0000000000000000 R14: ffff888013815b80 R15: 0000000000000001 [ 74.987409][ T9] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 74.997788][ T9] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.005827][ T9] CR2: 00007f6527408000 CR3: 000000002e5c7000 CR4: 00000000001506e0 [ 75.015122][ T9] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.024183][ T9] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.034888][ T9] Call Trace: [ 75.038490][ T9] nf_unregister_net_hooks+0x117/0x160 [ 75.045811][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 75.051929][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 75.061089][ T9] cleanup_net+0x451/0xb10 [ 75.067156][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 75.074084][ T9] process_one_work+0x98d/0x1600 [ 75.079583][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 75.087820][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 75.094047][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 75.099735][ T9] worker_thread+0x64c/0x1120 [ 75.107672][ T9] ? process_one_work+0x1600/0x1600 [ 75.114753][ T9] kthread+0x3b1/0x4a0 [ 75.119118][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 75.126980][ T9] ret_from_fork+0x1f/0x30 [ 75.131726][ T9] Kernel panic - not syncing: panic_on_warn set ... [ 75.138569][ T9] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 5.12.0-syzkaller #0 [ 75.146664][ T9] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.156908][ T9] Workqueue: netns cleanup_net [ 75.161827][ T9] Call Trace: [ 75.165127][ T9] dump_stack+0x141/0x1d7 [ 75.169490][ T9] panic+0x306/0x73d [ 75.173728][ T9] ? __warn_printk+0xf3/0xf3 [ 75.178494][ T9] ? __warn.cold+0x1a/0x44 [ 75.183029][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 75.188913][ T9] __warn.cold+0x35/0x44 [ 75.193190][ T9] ? __nf_unregister_net_hook+0x1eb/0x610 [ 75.198937][ T9] report_bug+0x1bd/0x210 [ 75.203303][ T9] handle_bug+0x3c/0x60 [ 75.207567][ T9] exc_invalid_op+0x14/0x40 [ 75.212182][ T9] asm_exc_invalid_op+0x12/0x20 [ 75.217137][ T9] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 75.223833][ T9] 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 [ 75.246599][ T9] RSP: 0000:ffffc90000ce7bc0 EFLAGS: 00010286 [ 75.252824][ T9] RAX: 0000000000000000 RBX: ffff8880226b8000 RCX: 0000000000000000 [ 75.261067][ T9] RDX: ffff888011d78000 RSI: ffffffff815c8ba5 RDI: fffff5200019cf6a [ 75.269252][ T9] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 75.277420][ T9] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802eae8f20 [ 75.285839][ T9] R13: 0000000000000000 R14: ffff888013815b80 R15: 0000000000000001 [ 75.293921][ T9] ? wake_up_klogd.part.0+0x8e/0xd0 [ 75.299545][ T9] ? vprintk+0x95/0x260 [ 75.303823][ T9] nf_unregister_net_hooks+0x117/0x160 [ 75.309313][ T9] arpt_unregister_table_pre_exit+0x67/0x80 [ 75.315342][ T9] ? arptable_filter_net_exit+0x20/0x20 [ 75.320913][ T9] cleanup_net+0x451/0xb10 [ 75.325359][ T9] ? ops_free_list.part.0+0x3d0/0x3d0 [ 75.330849][ T9] process_one_work+0x98d/0x1600 [ 75.335817][ T9] ? pwq_dec_nr_in_flight+0x320/0x320 [ 75.341392][ T9] ? rwlock_bug.part.0+0x90/0x90 [ 75.346358][ T9] ? _raw_spin_lock_irq+0x41/0x50 [ 75.351431][ T9] worker_thread+0x64c/0x1120 [ 75.356343][ T9] ? process_one_work+0x1600/0x1600 [ 75.361584][ T9] kthread+0x3b1/0x4a0 [ 75.365734][ T9] ? __kthread_bind_mask+0xc0/0xc0 [ 75.370876][ T9] ret_from_fork+0x1f/0x30 [ 75.376602][ T9] Kernel Offset: disabled [ 75.381302][ T9] Rebooting in 86400 seconds..