Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.76' (ECDSA) to the list of known hosts. 2021/05/04 05:06:26 fuzzer started 2021/05/04 05:06:26 connecting to host at 10.128.0.169:35267 2021/05/04 05:06:26 checking machine... 2021/05/04 05:06:26 checking revisions... 2021/05/04 05:06:26 testing simple program... syzkaller login: [ 72.307635][ T8459] chnl_net:caif_netlink_parms(): no params data found [ 72.360316][ T8459] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.369201][ T8459] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.378086][ T8459] device bridge_slave_0 entered promiscuous mode [ 72.390018][ T8459] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.397811][ T8459] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.406573][ T8459] device bridge_slave_1 entered promiscuous mode [ 72.427348][ T8459] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.439165][ T8459] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.463251][ T8459] team0: Port device team_slave_0 added [ 72.472082][ T8459] team0: Port device team_slave_1 added [ 72.490028][ T8459] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.497454][ T8459] 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. [ 72.524569][ T8459] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.538080][ T8459] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.545321][ T8459] 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. [ 72.571777][ T8459] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.599470][ T8459] device hsr_slave_0 entered promiscuous mode [ 72.606600][ T8459] device hsr_slave_1 entered promiscuous mode [ 72.708421][ T8459] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.720131][ T8459] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.730263][ T8459] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.741676][ T8459] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.768996][ T8459] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.777026][ T8459] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.785708][ T8459] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.792991][ T8459] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.842243][ T8459] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.859437][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.871089][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.880620][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.890436][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 72.903821][ T8459] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.916215][ T2940] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.927083][ T2940] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.935287][ T2940] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.957552][ T4822] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.967265][ T4822] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.974340][ T4822] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.983551][ T4822] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.003658][ T8459] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 73.015449][ T8459] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 73.029978][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.038991][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.048893][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.058276][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.067286][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.086578][ T8679] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.094308][ T8679] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.110283][ T8459] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.130941][ T8679] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.154411][ T8679] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.163823][ T8679] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.173054][ T8679] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.188018][ T8459] device veth0_vlan entered promiscuous mode [ 73.200620][ T8459] device veth1_vlan entered promiscuous mode [ 73.223876][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.232611][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.241134][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.252562][ T8459] device veth0_macvtap entered promiscuous mode [ 73.262564][ T8459] device veth1_macvtap entered promiscuous mode [ 73.282399][ T8459] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.292388][ T8679] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.302522][ T8679] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.314399][ T8459] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.324193][ T8679] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.333727][ T8679] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.350360][ T8459] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.359759][ T8459] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.373740][ T8459] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.384741][ T8459] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.482871][ T160] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.500048][ T160] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.521159][ T4822] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 73.538164][ T750] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.548723][ T750] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.560748][ T4822] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/04 05:06:29 building call list... [ 74.217051][ T160] ------------[ cut here ]------------ [ 74.223038][ T160] hook not found, pf 3 num 0 [ 74.223690][ T160] WARNING: CPU: 0 PID: 160 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 74.243439][ T160] Modules linked in: [ 74.247870][ T160] CPU: 0 PID: 160 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 74.258723][ T160] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.271834][ T160] Workqueue: netns cleanup_net [ 74.278099][ T160] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 74.285236][ T160] 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 80 5a 8a 01 <0f> 0b e9 e5 00 00 00 e8 99 46 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 74.308906][ T160] RSP: 0018:ffffc90000e9fbc0 EFLAGS: 00010286 [ 74.315305][ T160] RAX: 0000000000000000 RBX: ffff88802128f900 RCX: 0000000000000000 [ 74.324155][ T160] RDX: ffff888012639c40 RSI: ffffffff815c8ba5 RDI: fffff520001d3f6a [ 74.335681][ T160] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 74.344406][ T160] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802c590f20 [ 74.354382][ T160] R13: 0000000000000000 R14: ffff888018b04700 R15: 0000000000000001 [ 74.363204][ T160] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 74.374290][ T160] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.382223][ T160] CR2: 000000c000646000 CR3: 000000000bc8e000 CR4: 00000000001506f0 [ 74.393447][ T160] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.402568][ T160] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.412669][ T160] Call Trace: [ 74.416138][ T160] nf_unregister_net_hooks+0x117/0x160 [ 74.421771][ T160] arpt_unregister_table_pre_exit+0x67/0x80 [ 74.430297][ T160] ? arptable_filter_net_exit+0x20/0x20 [ 74.436249][ T160] cleanup_net+0x451/0xb10 [ 74.440790][ T160] ? ops_free_list.part.0+0x3d0/0x3d0 [ 74.447843][ T160] process_one_work+0x98d/0x1600 [ 74.453099][ T160] ? pwq_dec_nr_in_flight+0x320/0x320 [ 74.463587][ T160] ? rwlock_bug.part.0+0x90/0x90 [ 74.471184][ T160] ? _raw_spin_lock_irq+0x41/0x50 [ 74.476618][ T160] worker_thread+0x64c/0x1120 [ 74.481441][ T160] ? __kthread_parkme+0x13f/0x1e0 [ 74.488122][ T160] ? process_one_work+0x1600/0x1600 [ 74.493538][ T160] kthread+0x3b1/0x4a0 [ 74.498304][ T160] ? __kthread_bind_mask+0xc0/0xc0 [ 74.503553][ T160] ret_from_fork+0x1f/0x30 [ 74.510748][ T160] Kernel panic - not syncing: panic_on_warn set ... [ 74.517799][ T160] CPU: 0 PID: 160 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 74.525882][ T160] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.536467][ T160] Workqueue: netns cleanup_net [ 74.541621][ T160] Call Trace: [ 74.545033][ T160] dump_stack+0x141/0x1d7 [ 74.549578][ T160] panic+0x306/0x73d [ 74.553527][ T160] ? __warn_printk+0xf3/0xf3 [ 74.558157][ T160] ? __warn.cold+0x1a/0x44 [ 74.562619][ T160] ? __nf_unregister_net_hook+0x1eb/0x610 [ 74.568550][ T160] __warn.cold+0x35/0x44 [ 74.572823][ T160] ? __nf_unregister_net_hook+0x1eb/0x610 [ 74.578751][ T160] report_bug+0x1bd/0x210 [ 74.583658][ T160] handle_bug+0x3c/0x60 [ 74.587922][ T160] exc_invalid_op+0x14/0x40 [ 74.592529][ T160] asm_exc_invalid_op+0x12/0x20 [ 74.597423][ T160] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 74.604662][ T160] 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 80 5a 8a 01 <0f> 0b e9 e5 00 00 00 e8 99 46 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 74.624375][ T160] RSP: 0018:ffffc90000e9fbc0 EFLAGS: 00010286 [ 74.630478][ T160] RAX: 0000000000000000 RBX: ffff88802128f900 RCX: 0000000000000000 [ 74.638741][ T160] RDX: ffff888012639c40 RSI: ffffffff815c8ba5 RDI: fffff520001d3f6a [ 74.646861][ T160] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 74.655296][ T160] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88802c590f20 [ 74.663289][ T160] R13: 0000000000000000 R14: ffff888018b04700 R15: 0000000000000001 [ 74.671516][ T160] ? wake_up_klogd.part.0+0x8e/0xd0 [ 74.676923][ T160] ? vprintk+0x95/0x260 [ 74.681676][ T160] nf_unregister_net_hooks+0x117/0x160 [ 74.687260][ T160] arpt_unregister_table_pre_exit+0x67/0x80 [ 74.693179][ T160] ? arptable_filter_net_exit+0x20/0x20 [ 74.698752][ T160] cleanup_net+0x451/0xb10 [ 74.703509][ T160] ? ops_free_list.part.0+0x3d0/0x3d0 [ 74.709180][ T160] process_one_work+0x98d/0x1600 [ 74.714158][ T160] ? pwq_dec_nr_in_flight+0x320/0x320 [ 74.719788][ T160] ? rwlock_bug.part.0+0x90/0x90 [ 74.724922][ T160] ? _raw_spin_lock_irq+0x41/0x50 [ 74.729981][ T160] worker_thread+0x64c/0x1120 [ 74.734869][ T160] ? __kthread_parkme+0x13f/0x1e0 [ 74.739999][ T160] ? process_one_work+0x1600/0x1600 [ 74.745392][ T160] kthread+0x3b1/0x4a0 [ 74.749882][ T160] ? __kthread_bind_mask+0xc0/0xc0 [ 74.755193][ T160] ret_from_fork+0x1f/0x30 [ 74.761632][ T160] Kernel Offset: disabled [ 74.766408][ T160] Rebooting in 86400 seconds..