[ 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 '10.128.0.115' (ECDSA) to the list of known hosts. 2021/05/04 21:10:58 fuzzer started 2021/05/04 21:10:59 connecting to host at 10.128.0.169:44411 2021/05/04 21:10:59 checking machine... 2021/05/04 21:10:59 checking revisions... 2021/05/04 21:10:59 testing simple program... syzkaller login: [ 71.357788][ T8398] chnl_net:caif_netlink_parms(): no params data found [ 71.414424][ T8398] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.422330][ T8398] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.431241][ T8398] device bridge_slave_0 entered promiscuous mode [ 71.441819][ T8398] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.449405][ T8398] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.458483][ T8398] device bridge_slave_1 entered promiscuous mode [ 71.481172][ T8398] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.495945][ T8398] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.519849][ T8398] team0: Port device team_slave_0 added [ 71.527586][ T8398] team0: Port device team_slave_1 added [ 71.546206][ T8398] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 71.554043][ T8398] 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. [ 71.581096][ T8398] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 71.596462][ T8398] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 71.604000][ T8398] 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. [ 71.631926][ T8398] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 71.658909][ T8398] device hsr_slave_0 entered promiscuous mode [ 71.666051][ T8398] device hsr_slave_1 entered promiscuous mode [ 71.773448][ T8398] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.787943][ T8398] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.797900][ T8398] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.809700][ T8398] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.835852][ T8398] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.843321][ T8398] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.851375][ T8398] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.858560][ T8398] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.906846][ T8398] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.921840][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.935830][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.945239][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.954104][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 71.968532][ T8398] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.981279][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.990663][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.997856][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.009927][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.019938][ T36] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.027291][ T36] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.054301][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.064247][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.079783][ T8398] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 72.092413][ T8398] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 72.105532][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.114511][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.124401][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.142978][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 72.150632][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 72.159015][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.171928][ T8398] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 72.195215][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 72.216787][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 72.226502][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 72.236023][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 72.246679][ T8398] device veth0_vlan entered promiscuous mode [ 72.260673][ T8398] device veth1_vlan entered promiscuous mode [ 72.285266][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 72.295282][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 72.305206][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 72.317956][ T8398] device veth0_macvtap entered promiscuous mode [ 72.329335][ T8398] device veth1_macvtap entered promiscuous mode [ 72.343743][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 72.359122][ T8398] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 72.367801][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 72.376881][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 72.390393][ T8398] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 72.399238][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 72.408411][ T8111] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 72.420414][ T8398] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.430876][ T8398] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.440201][ T8398] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.449076][ T8398] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 72.549298][ T230] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.557982][ T230] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.570145][ T4840] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 72.602415][ T230] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 72.610873][ T230] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 72.624038][ T4840] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready executing program 2021/05/04 21:11:02 building call list... [ 73.224521][ T230] ------------[ cut here ]------------ [ 73.230605][ T230] hook not found, pf 3 num 0 [ 73.231250][ T230] WARNING: CPU: 1 PID: 230 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 73.251564][ T230] Modules linked in: [ 73.257169][ T230] CPU: 1 PID: 230 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 73.270000][ T230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.281445][ T230] Workqueue: netns cleanup_net [ 73.288864][ T230] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 73.296305][ T230] 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 90 5a 8a 01 <0f> 0b e9 e5 00 00 00 e8 a9 46 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 73.319247][ T230] RSP: 0018:ffffc90000e2fbc0 EFLAGS: 00010286 [ 73.328104][ T230] RAX: 0000000000000000 RBX: ffff8880215b6c00 RCX: 0000000000000000 [ 73.339632][ T230] RDX: ffff888012851c40 RSI: ffffffff815c8ba5 RDI: fffff520001c5f6a [ 73.349023][ T230] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 73.361496][ T230] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888035f08f20 [ 73.370989][ T230] R13: 0000000000000000 R14: ffff888020031e80 R15: 0000000000000001 [ 73.381755][ T230] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 73.391977][ T230] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.401504][ T230] CR2: 00007fd5e003c0c8 CR3: 0000000021673000 CR4: 00000000001506e0 [ 73.415443][ T230] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.424755][ T230] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.435180][ T230] Call Trace: [ 73.439234][ T230] nf_unregister_net_hooks+0x117/0x160 [ 73.447093][ T230] arpt_unregister_table_pre_exit+0x67/0x80 [ 73.455639][ T230] ? arptable_filter_net_exit+0x20/0x20 [ 73.461257][ T230] cleanup_net+0x451/0xb10 [ 73.467206][ T230] ? ops_free_list.part.0+0x3d0/0x3d0 [ 73.475765][ T230] process_one_work+0x98d/0x1600 [ 73.480876][ T230] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.490386][ T230] ? rwlock_bug.part.0+0x90/0x90 [ 73.497976][ T230] ? _raw_spin_lock_irq+0x41/0x50 [ 73.504082][ T230] worker_thread+0x64c/0x1120 [ 73.508823][ T230] ? process_one_work+0x1600/0x1600 [ 73.517246][ T230] kthread+0x3b1/0x4a0 [ 73.521366][ T230] ? __kthread_bind_mask+0xc0/0xc0 [ 73.528080][ T230] ret_from_fork+0x1f/0x30 [ 73.535492][ T230] Kernel panic - not syncing: panic_on_warn set ... [ 73.542097][ T230] CPU: 1 PID: 230 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 73.550272][ T230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.560349][ T230] Workqueue: netns cleanup_net [ 73.565146][ T230] Call Trace: [ 73.568965][ T230] dump_stack+0x141/0x1d7 [ 73.573323][ T230] panic+0x306/0x73d [ 73.577236][ T230] ? __warn_printk+0xf3/0xf3 [ 73.582078][ T230] ? __warn.cold+0x1a/0x44 [ 73.586605][ T230] ? __nf_unregister_net_hook+0x1eb/0x610 [ 73.592529][ T230] __warn.cold+0x35/0x44 [ 73.597080][ T230] ? __nf_unregister_net_hook+0x1eb/0x610 [ 73.602825][ T230] report_bug+0x1bd/0x210 [ 73.607184][ T230] handle_bug+0x3c/0x60 [ 73.611359][ T230] exc_invalid_op+0x14/0x40 [ 73.615883][ T230] asm_exc_invalid_op+0x12/0x20 [ 73.620927][ T230] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 73.628637][ T230] 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 90 5a 8a 01 <0f> 0b e9 e5 00 00 00 e8 a9 46 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 73.648361][ T230] RSP: 0018:ffffc90000e2fbc0 EFLAGS: 00010286 [ 73.654438][ T230] RAX: 0000000000000000 RBX: ffff8880215b6c00 RCX: 0000000000000000 [ 73.662584][ T230] RDX: ffff888012851c40 RSI: ffffffff815c8ba5 RDI: fffff520001c5f6a [ 73.670747][ T230] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 73.678715][ T230] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888035f08f20 [ 73.686699][ T230] R13: 0000000000000000 R14: ffff888020031e80 R15: 0000000000000001 [ 73.694767][ T230] ? wake_up_klogd.part.0+0x8e/0xd0 [ 73.700086][ T230] ? vprintk+0x95/0x260 [ 73.704345][ T230] nf_unregister_net_hooks+0x117/0x160 [ 73.709903][ T230] arpt_unregister_table_pre_exit+0x67/0x80 [ 73.715975][ T230] ? arptable_filter_net_exit+0x20/0x20 [ 73.721613][ T230] cleanup_net+0x451/0xb10 [ 73.726373][ T230] ? ops_free_list.part.0+0x3d0/0x3d0 [ 73.732073][ T230] process_one_work+0x98d/0x1600 [ 73.737038][ T230] ? pwq_dec_nr_in_flight+0x320/0x320 [ 73.742508][ T230] ? rwlock_bug.part.0+0x90/0x90 [ 73.747566][ T230] ? _raw_spin_lock_irq+0x41/0x50 [ 73.752604][ T230] worker_thread+0x64c/0x1120 [ 73.757287][ T230] ? process_one_work+0x1600/0x1600 [ 73.762485][ T230] kthread+0x3b1/0x4a0 [ 73.766815][ T230] ? __kthread_bind_mask+0xc0/0xc0 [ 73.771934][ T230] ret_from_fork+0x1f/0x30 [ 73.778007][ T230] Kernel Offset: disabled [ 73.782605][ T230] Rebooting in 86400 seconds..