Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.54' (ECDSA) to the list of known hosts. 2021/05/03 14:44:44 fuzzer started 2021/05/03 14:44:44 connecting to host at 10.128.0.169:46423 2021/05/03 14:44:44 checking machine... 2021/05/03 14:44:44 checking revisions... 2021/05/03 14:44:44 testing simple program... syzkaller login: [ 81.547263][ T8442] chnl_net:caif_netlink_parms(): no params data found [ 81.602698][ T8442] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.610638][ T8442] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.620730][ T8442] device bridge_slave_0 entered promiscuous mode [ 81.632883][ T8442] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.640784][ T8442] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.650127][ T8442] device bridge_slave_1 entered promiscuous mode [ 81.674084][ T8442] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 81.686217][ T8442] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 81.712859][ T8442] team0: Port device team_slave_0 added [ 81.721332][ T8442] team0: Port device team_slave_1 added [ 81.742542][ T8442] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 81.750690][ T8442] 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. [ 81.778864][ T8442] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 81.794969][ T8442] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 81.803799][ T8442] 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. [ 81.831547][ T8442] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 81.862123][ T8442] device hsr_slave_0 entered promiscuous mode [ 81.870006][ T8442] device hsr_slave_1 entered promiscuous mode [ 81.987210][ T8442] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 82.001710][ T8442] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 82.012517][ T8442] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 82.023834][ T8442] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 82.051126][ T8442] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.058507][ T8442] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.066445][ T8442] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.073983][ T8442] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.122757][ T8442] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.136593][ T4807] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 82.152613][ T4807] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.162233][ T4807] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.171768][ T4807] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 82.187390][ T8442] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.201702][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.210419][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.218027][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.238828][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 82.248841][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.256474][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.279175][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 82.289897][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.299347][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 82.314499][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.323824][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 82.335727][ T8442] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 82.359955][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.369868][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.384630][ T8442] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.408974][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.435146][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.446404][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.455678][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.470014][ T8442] device veth0_vlan entered promiscuous mode [ 82.484878][ T8442] device veth1_vlan entered promiscuous mode [ 82.512609][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.522488][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.532160][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.545719][ T8442] device veth0_macvtap entered promiscuous mode [ 82.557290][ T8442] device veth1_macvtap entered promiscuous mode [ 82.577306][ T8442] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.586851][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 82.595912][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.615025][ T8442] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.623143][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 82.633609][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 82.647768][ T8442] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.657213][ T8442] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.670204][ T8442] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.679952][ T8442] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 82.792634][ T85] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.813582][ T85] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.831650][ T4807] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 82.848791][ T150] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.856891][ T150] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.873730][ T4807] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/03 14:44:47 building call list... [ 83.585293][ T150] ------------[ cut here ]------------ [ 83.600485][ T150] hook not found, pf 3 num 0 [ 83.601206][ T150] WARNING: CPU: 0 PID: 150 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 83.618063][ T150] Modules linked in: [ 83.622471][ T150] CPU: 0 PID: 150 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 83.632504][ T150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.657392][ T150] Workqueue: netns cleanup_net [ 83.662246][ T150] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 83.679160][ T150] 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 [ 83.700996][ T150] RSP: 0018:ffffc900010bfbc0 EFLAGS: 00010286 [ 83.707122][ T150] RAX: 0000000000000000 RBX: ffff888147b1ca00 RCX: 0000000000000000 [ 83.723904][ T150] RDX: ffff888012689c40 RSI: ffffffff815c8ba5 RDI: fffff52000217f6a [ 83.734586][ T150] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 83.743749][ T150] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888035be8f20 [ 83.754002][ T150] R13: 0000000000000000 R14: ffff888013913700 R15: 0000000000000001 [ 83.763747][ T150] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 83.775387][ T150] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.782985][ T150] CR2: 00007fbe97c005c0 CR3: 00000000262da000 CR4: 00000000001506f0 [ 83.793565][ T150] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.806130][ T150] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.819255][ T150] Call Trace: [ 83.822608][ T150] nf_unregister_net_hooks+0x117/0x160 [ 83.831435][ T150] arpt_unregister_table_pre_exit+0x67/0x80 [ 83.838136][ T150] ? arptable_filter_net_exit+0x20/0x20 [ 83.843754][ T150] cleanup_net+0x451/0xb10 [ 83.851164][ T150] ? ops_free_list.part.0+0x3d0/0x3d0 [ 83.856615][ T150] process_one_work+0x98d/0x1600 [ 83.863300][ T150] ? pwq_dec_nr_in_flight+0x320/0x320 [ 83.872452][ T150] ? rwlock_bug.part.0+0x90/0x90 [ 83.880519][ T150] ? _raw_spin_lock_irq+0x41/0x50 [ 83.885680][ T150] worker_thread+0x64c/0x1120 [ 83.894600][ T150] ? process_one_work+0x1600/0x1600 [ 83.900573][ T150] kthread+0x3b1/0x4a0 [ 83.905052][ T150] ? __kthread_bind_mask+0xc0/0xc0 [ 83.913477][ T150] ret_from_fork+0x1f/0x30 [ 83.919169][ T150] Kernel panic - not syncing: panic_on_warn set ... [ 83.925945][ T150] CPU: 0 PID: 150 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 83.934053][ T150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.944511][ T150] Workqueue: netns cleanup_net [ 83.949338][ T150] Call Trace: [ 83.952697][ T150] dump_stack+0x141/0x1d7 [ 83.957073][ T150] panic+0x306/0x73d [ 83.961253][ T150] ? __warn_printk+0xf3/0xf3 [ 83.966170][ T150] ? __warn.cold+0x1a/0x44 [ 83.970731][ T150] ? __nf_unregister_net_hook+0x1eb/0x610 [ 83.976578][ T150] __warn.cold+0x35/0x44 [ 83.980986][ T150] ? __nf_unregister_net_hook+0x1eb/0x610 [ 83.986825][ T150] report_bug+0x1bd/0x210 [ 83.991203][ T150] handle_bug+0x3c/0x60 [ 83.995822][ T150] exc_invalid_op+0x14/0x40 [ 84.000450][ T150] asm_exc_invalid_op+0x12/0x20 [ 84.005449][ T150] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 84.011955][ T150] 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 [ 84.032143][ T150] RSP: 0018:ffffc900010bfbc0 EFLAGS: 00010286 [ 84.038268][ T150] RAX: 0000000000000000 RBX: ffff888147b1ca00 RCX: 0000000000000000 [ 84.046262][ T150] RDX: ffff888012689c40 RSI: ffffffff815c8ba5 RDI: fffff52000217f6a [ 84.054552][ T150] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 84.062631][ T150] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888035be8f20 [ 84.070660][ T150] R13: 0000000000000000 R14: ffff888013913700 R15: 0000000000000001 [ 84.078851][ T150] ? wake_up_klogd.part.0+0x8e/0xd0 [ 84.084268][ T150] ? vprintk+0x95/0x260 [ 84.088499][ T150] nf_unregister_net_hooks+0x117/0x160 [ 84.094412][ T150] arpt_unregister_table_pre_exit+0x67/0x80 [ 84.100365][ T150] ? arptable_filter_net_exit+0x20/0x20 [ 84.106053][ T150] cleanup_net+0x451/0xb10 [ 84.110686][ T150] ? ops_free_list.part.0+0x3d0/0x3d0 [ 84.116103][ T150] process_one_work+0x98d/0x1600 [ 84.121267][ T150] ? pwq_dec_nr_in_flight+0x320/0x320 [ 84.126700][ T150] ? rwlock_bug.part.0+0x90/0x90 [ 84.131666][ T150] ? _raw_spin_lock_irq+0x41/0x50 [ 84.136905][ T150] worker_thread+0x64c/0x1120 [ 84.141638][ T150] ? process_one_work+0x1600/0x1600 [ 84.146894][ T150] kthread+0x3b1/0x4a0 [ 84.151280][ T150] ? __kthread_bind_mask+0xc0/0xc0 [ 84.156882][ T150] ret_from_fork+0x1f/0x30 [ 84.162896][ T150] Kernel Offset: disabled [ 84.168576][ T150] Rebooting in 86400 seconds..