[ 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 '10.128.0.15' (ECDSA) to the list of known hosts. 2021/04/29 20:44:24 fuzzer started 2021/04/29 20:44:24 connecting to host at 10.128.0.169:34599 2021/04/29 20:44:24 checking machine... 2021/04/29 20:44:24 checking revisions... 2021/04/29 20:44:24 testing simple program... syzkaller login: [ 73.507686][ T8416] chnl_net:caif_netlink_parms(): no params data found [ 73.589017][ T8416] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.596968][ T8416] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.606031][ T8416] device bridge_slave_0 entered promiscuous mode [ 73.617072][ T8416] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.624246][ T8416] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.632564][ T8416] device bridge_slave_1 entered promiscuous mode [ 73.651762][ T8416] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.663446][ T8416] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.686171][ T8416] team0: Port device team_slave_0 added [ 73.693984][ T8416] team0: Port device team_slave_1 added [ 73.712122][ T8416] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.719743][ T8416] 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. [ 73.746061][ T8416] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.759343][ T8416] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.767477][ T8416] 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. [ 73.793977][ T8416] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.833228][ T8416] device hsr_slave_0 entered promiscuous mode [ 73.841535][ T8416] device hsr_slave_1 entered promiscuous mode [ 73.948613][ T8416] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.960150][ T8416] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.970801][ T8416] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.981490][ T8416] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.006122][ T8416] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.013474][ T8416] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.021579][ T8416] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.028760][ T8416] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.074215][ T8416] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.090415][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.101953][ T3614] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.111403][ T3614] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.121022][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 74.136935][ T8416] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.148287][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.157820][ T3614] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.165026][ T3614] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.185476][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.194142][ T36] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.201287][ T36] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.213521][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.222939][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.243151][ T8416] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 74.255795][ T8416] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 74.270209][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.279645][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.289442][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.299203][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.320956][ T8416] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.328847][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.336962][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.358304][ T4839] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.379634][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.388450][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.398090][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.410307][ T8416] device veth0_vlan entered promiscuous mode [ 74.423019][ T8416] device veth1_vlan entered promiscuous mode [ 74.447439][ T4839] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.456789][ T4839] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.467009][ T4839] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.480382][ T8416] device veth0_macvtap entered promiscuous mode [ 74.490647][ T8416] device veth1_macvtap entered promiscuous mode [ 74.509149][ T8416] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.518817][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 74.527878][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.539600][ T8416] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.547689][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 74.557144][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.570998][ T8416] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.584420][ T8416] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.593187][ T8416] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.602963][ T8416] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.696857][ T226] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.727174][ T226] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.739395][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.752186][ T48] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.762501][ T48] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.774792][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/04/29 20:44:27 building call list... executing program [ 75.473127][ T48] ------------[ cut here ]------------ [ 75.480550][ T48] hook not found, pf 3 num 0 [ 75.481329][ T48] WARNING: CPU: 0 PID: 48 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 75.503345][ T48] Modules linked in: [ 75.509429][ T48] CPU: 0 PID: 48 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 75.520260][ T48] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.533244][ T48] Workqueue: netns cleanup_net [ 75.541281][ T48] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 75.548899][ T48] 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 [ 75.572398][ T48] RSP: 0018:ffffc90000eefbc0 EFLAGS: 00010286 [ 75.580728][ T48] RAX: 0000000000000000 RBX: ffff888021c98100 RCX: 0000000000000000 [ 75.591716][ T48] RDX: ffff8880120e9c40 RSI: ffffffff815c8ba5 RDI: fffff520001ddf6a [ 75.601331][ T48] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 75.623137][ T48] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888018ed8f20 [ 75.632874][ T48] R13: 0000000000000000 R14: ffff8880126fce80 R15: 0000000000000001 [ 75.643322][ T48] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 75.655716][ T48] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.662373][ T48] CR2: 00007f9a90d6f000 CR3: 000000001d6d5000 CR4: 00000000001506f0 [ 75.671646][ T48] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.682889][ T48] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.693770][ T48] Call Trace: [ 75.700091][ T48] nf_unregister_net_hooks+0x117/0x160 [ 75.706451][ T48] arpt_unregister_table_pre_exit+0x67/0x80 [ 75.712386][ T48] ? arptable_filter_net_exit+0x20/0x20 [ 75.721399][ T48] cleanup_net+0x451/0xb10 [ 75.726817][ T48] ? ops_free_list.part.0+0x3d0/0x3d0 [ 75.733275][ T48] process_one_work+0x98d/0x1600 [ 75.741113][ T48] ? pwq_dec_nr_in_flight+0x320/0x320 [ 75.747554][ T48] ? rwlock_bug.part.0+0x90/0x90 [ 75.752530][ T48] ? _raw_spin_lock_irq+0x41/0x50 [ 75.760461][ T48] worker_thread+0x64c/0x1120 [ 75.767288][ T48] ? __kthread_parkme+0x13f/0x1e0 [ 75.772355][ T48] ? process_one_work+0x1600/0x1600 [ 75.780473][ T48] kthread+0x3b1/0x4a0 [ 75.785908][ T48] ? __kthread_bind_mask+0xc0/0xc0 [ 75.791148][ T48] ret_from_fork+0x1f/0x30 [ 75.798479][ T48] Kernel panic - not syncing: panic_on_warn set ... [ 75.805085][ T48] CPU: 0 PID: 48 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 75.813071][ T48] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.823156][ T48] Workqueue: netns cleanup_net [ 75.827951][ T48] Call Trace: [ 75.831241][ T48] dump_stack+0x141/0x1d7 [ 75.835590][ T48] panic+0x306/0x73d [ 75.839504][ T48] ? __warn_printk+0xf3/0xf3 [ 75.844141][ T48] ? __warn.cold+0x1a/0x44 [ 75.848583][ T48] ? __nf_unregister_net_hook+0x1eb/0x610 [ 75.854324][ T48] __warn.cold+0x35/0x44 [ 75.858624][ T48] ? __nf_unregister_net_hook+0x1eb/0x610 [ 75.864362][ T48] report_bug+0x1bd/0x210 [ 75.868715][ T48] handle_bug+0x3c/0x60 [ 75.872885][ T48] exc_invalid_op+0x14/0x40 [ 75.877424][ T48] asm_exc_invalid_op+0x12/0x20 [ 75.882286][ T48] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 75.888649][ T48] 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 [ 75.908381][ T48] RSP: 0018:ffffc90000eefbc0 EFLAGS: 00010286 [ 75.914525][ T48] RAX: 0000000000000000 RBX: ffff888021c98100 RCX: 0000000000000000 [ 75.922527][ T48] RDX: ffff8880120e9c40 RSI: ffffffff815c8ba5 RDI: fffff520001ddf6a [ 75.930522][ T48] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 75.938859][ T48] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888018ed8f20 [ 75.946861][ T48] R13: 0000000000000000 R14: ffff8880126fce80 R15: 0000000000000001 [ 75.954856][ T48] ? wake_up_klogd.part.0+0x8e/0xd0 [ 75.960170][ T48] ? vprintk+0x95/0x260 [ 75.964461][ T48] nf_unregister_net_hooks+0x117/0x160 [ 75.969942][ T48] arpt_unregister_table_pre_exit+0x67/0x80 [ 75.975856][ T48] ? arptable_filter_net_exit+0x20/0x20 [ 75.981420][ T48] cleanup_net+0x451/0xb10 [ 75.986037][ T48] ? ops_free_list.part.0+0x3d0/0x3d0 [ 75.991457][ T48] process_one_work+0x98d/0x1600 [ 75.996532][ T48] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.002119][ T48] ? rwlock_bug.part.0+0x90/0x90 [ 76.007167][ T48] ? _raw_spin_lock_irq+0x41/0x50 [ 76.012217][ T48] worker_thread+0x64c/0x1120 [ 76.016959][ T48] ? __kthread_parkme+0x13f/0x1e0 [ 76.022003][ T48] ? process_one_work+0x1600/0x1600 [ 76.027225][ T48] kthread+0x3b1/0x4a0 [ 76.031306][ T48] ? __kthread_bind_mask+0xc0/0xc0 [ 76.036434][ T48] ret_from_fork+0x1f/0x30 [ 76.042336][ T48] Kernel Offset: disabled [ 76.046769][ T48] Rebooting in 86400 seconds..