[ 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 '10.128.0.37' (ECDSA) to the list of known hosts. 2021/04/29 20:32:25 fuzzer started 2021/04/29 20:32:26 connecting to host at 10.128.0.169:41441 2021/04/29 20:32:26 checking machine... 2021/04/29 20:32:26 checking revisions... 2021/04/29 20:32:26 testing simple program... syzkaller login: [ 74.390039][ T8419] chnl_net:caif_netlink_parms(): no params data found [ 74.456323][ T8419] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.465362][ T8419] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.474335][ T8419] device bridge_slave_0 entered promiscuous mode [ 74.485395][ T8419] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.494206][ T8419] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.503525][ T8419] device bridge_slave_1 entered promiscuous mode [ 74.525548][ T8419] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.538264][ T8419] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.562537][ T8419] team0: Port device team_slave_0 added [ 74.572104][ T8419] team0: Port device team_slave_1 added [ 74.593183][ T8419] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.600849][ T8419] 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. [ 74.628435][ T8419] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.642601][ T8419] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.652718][ T8419] 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. [ 74.679847][ T8419] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.708503][ T8419] device hsr_slave_0 entered promiscuous mode [ 74.717635][ T8419] device hsr_slave_1 entered promiscuous mode [ 74.834036][ T8419] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.845193][ T8419] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.861691][ T8419] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.872798][ T8419] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.902187][ T8419] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.910332][ T8419] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.918547][ T8419] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.925871][ T8419] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.975335][ T8419] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.991650][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.004303][ T8641] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.015023][ T8641] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.025510][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 75.039473][ T8419] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.052583][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.062488][ T8641] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.069882][ T8641] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.088019][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.096640][ T8641] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.103804][ T8641] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.117750][ T4854] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.126490][ T4854] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.149110][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.158510][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.167867][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.181184][ T8419] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.201131][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.210559][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.225039][ T8419] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.247653][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.270223][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.279748][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.290130][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.303955][ T8419] device veth0_vlan entered promiscuous mode [ 75.317886][ T8419] device veth1_vlan entered promiscuous mode [ 75.343002][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.354885][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.363893][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.377267][ T8419] device veth0_macvtap entered promiscuous mode [ 75.389563][ T8419] device veth1_macvtap entered promiscuous mode [ 75.398321][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.421661][ T8419] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.433208][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 75.443622][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.456280][ T8419] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.466636][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 75.477115][ T8641] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.489592][ T8419] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.500314][ T8419] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.510611][ T8419] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.520236][ T8419] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.621255][ T182] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.630313][ T182] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.664691][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.687380][ T118] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.696586][ T118] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 75.707598][ T37] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/04/29 20:32:29 building call list... [ 76.411452][ T28] ------------[ cut here ]------------ [ 76.420756][ T28] hook not found, pf 3 num 0 [ 76.421527][ T28] WARNING: CPU: 0 PID: 28 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 76.439003][ T28] Modules linked in: [ 76.443644][ T28] CPU: 0 PID: 28 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 76.456730][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.470789][ T28] Workqueue: netns cleanup_net [ 76.475993][ T28] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 76.486893][ T28] 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 60 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 79 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 76.508844][ T28] RSP: 0018:ffffc90000e2fbc0 EFLAGS: 00010286 [ 76.515112][ T28] RAX: 0000000000000000 RBX: ffff8880217f8b00 RCX: 0000000000000000 [ 76.524795][ T28] RDX: ffff888011f79c40 RSI: ffffffff815c8ba5 RDI: fffff520001c5f6a [ 76.533752][ T28] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 76.543389][ T28] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888035f90f20 [ 76.556406][ T28] R13: 0000000000000000 R14: ffff88801bfa0a80 R15: 0000000000000001 [ 76.565741][ T28] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 76.575819][ T28] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.584406][ T28] CR2: 00007f63b6976000 CR3: 0000000021072000 CR4: 00000000001506f0 [ 76.594588][ T28] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.604181][ T28] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.614433][ T28] Call Trace: [ 76.618903][ T28] nf_unregister_net_hooks+0x117/0x160 [ 76.626007][ T28] arpt_unregister_table_pre_exit+0x67/0x80 [ 76.636881][ T28] ? arptable_filter_net_exit+0x20/0x20 [ 76.643197][ T28] cleanup_net+0x451/0xb10 [ 76.648020][ T28] ? ops_free_list.part.0+0x3d0/0x3d0 [ 76.653760][ T28] process_one_work+0x98d/0x1600 [ 76.659276][ T28] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.664932][ T28] ? rwlock_bug.part.0+0x90/0x90 [ 76.670853][ T28] ? _raw_spin_lock_irq+0x41/0x50 [ 76.676535][ T28] worker_thread+0x64c/0x1120 [ 76.681940][ T28] ? __kthread_parkme+0x13f/0x1e0 [ 76.688134][ T28] ? process_one_work+0x1600/0x1600 [ 76.693562][ T28] kthread+0x3b1/0x4a0 [ 76.697930][ T28] ? __kthread_bind_mask+0xc0/0xc0 [ 76.703185][ T28] ret_from_fork+0x1f/0x30 [ 76.709735][ T28] Kernel panic - not syncing: panic_on_warn set ... [ 76.716540][ T28] CPU: 0 PID: 28 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 76.724726][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.735873][ T28] Workqueue: netns cleanup_net [ 76.741149][ T28] Call Trace: [ 76.744733][ T28] dump_stack+0x141/0x1d7 [ 76.749194][ T28] panic+0x306/0x73d [ 76.753641][ T28] ? __warn_printk+0xf3/0xf3 [ 76.758278][ T28] ? __warn.cold+0x1a/0x44 [ 76.762734][ T28] ? __nf_unregister_net_hook+0x1eb/0x610 [ 76.768485][ T28] __warn.cold+0x35/0x44 [ 76.773102][ T28] ? __nf_unregister_net_hook+0x1eb/0x610 [ 76.779310][ T28] report_bug+0x1bd/0x210 [ 76.783859][ T28] handle_bug+0x3c/0x60 [ 76.788428][ T28] exc_invalid_op+0x14/0x40 [ 76.793179][ T28] asm_exc_invalid_op+0x12/0x20 [ 76.798263][ T28] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 76.805092][ T28] 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 60 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 79 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 76.825648][ T28] RSP: 0018:ffffc90000e2fbc0 EFLAGS: 00010286 [ 76.831743][ T28] RAX: 0000000000000000 RBX: ffff8880217f8b00 RCX: 0000000000000000 [ 76.839907][ T28] RDX: ffff888011f79c40 RSI: ffffffff815c8ba5 RDI: fffff520001c5f6a [ 76.847911][ T28] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 76.855990][ T28] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888035f90f20 [ 76.864413][ T28] R13: 0000000000000000 R14: ffff88801bfa0a80 R15: 0000000000000001 [ 76.872608][ T28] ? wake_up_klogd.part.0+0x8e/0xd0 [ 76.878003][ T28] ? vprintk+0x95/0x260 [ 76.882198][ T28] nf_unregister_net_hooks+0x117/0x160 [ 76.887769][ T28] arpt_unregister_table_pre_exit+0x67/0x80 [ 76.893893][ T28] ? arptable_filter_net_exit+0x20/0x20 [ 76.899565][ T28] cleanup_net+0x451/0xb10 [ 76.904117][ T28] ? ops_free_list.part.0+0x3d0/0x3d0 [ 76.909521][ T28] process_one_work+0x98d/0x1600 [ 76.914811][ T28] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.920386][ T28] ? rwlock_bug.part.0+0x90/0x90 [ 76.926006][ T28] ? _raw_spin_lock_irq+0x41/0x50 [ 76.931585][ T28] worker_thread+0x64c/0x1120 [ 76.936827][ T28] ? __kthread_parkme+0x13f/0x1e0 [ 76.942146][ T28] ? process_one_work+0x1600/0x1600 [ 76.947374][ T28] kthread+0x3b1/0x4a0 [ 76.951561][ T28] ? __kthread_bind_mask+0xc0/0xc0 [ 76.956902][ T28] ret_from_fork+0x1f/0x30 [ 76.963090][ T28] Kernel Offset: disabled [ 76.967930][ T28] Rebooting in 86400 seconds..