Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.2' (ECDSA) to the list of known hosts. 2021/05/05 00:56:17 fuzzer started 2021/05/05 00:56:18 connecting to host at 10.128.0.169:44855 2021/05/05 00:56:18 checking machine... 2021/05/05 00:56:18 checking revisions... 2021/05/05 00:56:18 testing simple program... syzkaller login: [ 78.051443][ T8446] chnl_net:caif_netlink_parms(): no params data found [ 78.109844][ T8446] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.119094][ T8446] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.128245][ T8446] device bridge_slave_0 entered promiscuous mode [ 78.139519][ T8446] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.149393][ T8446] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.160120][ T8446] device bridge_slave_1 entered promiscuous mode [ 78.184533][ T8446] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.196794][ T8446] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.225381][ T8446] team0: Port device team_slave_0 added [ 78.234070][ T8446] team0: Port device team_slave_1 added [ 78.255333][ T8446] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.263297][ T8446] 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. [ 78.295206][ T8446] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.315274][ T8446] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.325321][ T8446] 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. [ 78.360457][ T8446] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.393593][ T8446] device hsr_slave_0 entered promiscuous mode [ 78.404406][ T8446] device hsr_slave_1 entered promiscuous mode [ 78.515707][ T8446] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.528120][ T8446] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.540083][ T8446] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.552172][ T8446] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.584800][ T8446] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.594167][ T8446] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.605439][ T8446] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.617092][ T8446] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.666437][ T8446] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.685460][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.699482][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.710512][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.721493][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 78.740235][ T8446] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.756312][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.767595][ T20] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.776729][ T20] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.794183][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.807669][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.815623][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.846681][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.859338][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.873700][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.888635][ T8446] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 78.905680][ T8446] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.915508][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.927856][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.954949][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.965057][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.979757][ T8446] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.002411][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 79.029345][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 79.041273][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 79.050281][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 79.064751][ T8446] device veth0_vlan entered promiscuous mode [ 79.080969][ T8446] device veth1_vlan entered promiscuous mode [ 79.108029][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 79.118964][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 79.136098][ T8446] device veth0_macvtap entered promiscuous mode [ 79.151243][ T8446] device veth1_macvtap entered promiscuous mode [ 79.170869][ T8446] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 79.181972][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 79.191287][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 79.201926][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 79.213279][ T4844] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 79.228591][ T8446] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.239712][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.252834][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 79.267908][ T8446] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 79.284035][ T8446] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.298866][ T8446] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.310239][ T8446] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.418964][ T170] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.447844][ T170] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.484030][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.494020][ T8670] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 79.495032][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.512881][ T3147] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/05 00:56:21 building call list... [ 80.295409][ T170] ------------[ cut here ]------------ [ 80.301891][ T170] hook not found, pf 3 num 0 [ 80.304064][ T170] WARNING: CPU: 1 PID: 170 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 80.321120][ T170] Modules linked in: [ 80.329179][ T170] CPU: 1 PID: 170 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 80.341739][ T170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.354846][ T170] Workqueue: netns cleanup_net [ 80.360387][ T170] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 80.368787][ T170] 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 d8 6d 8a e8 70 4b 8a 01 <0f> 0b e9 e5 00 00 00 e8 89 17 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 80.391052][ T170] RSP: 0018:ffffc900015bfbc0 EFLAGS: 00010286 [ 80.398418][ T170] RAX: 0000000000000000 RBX: ffff888149f0bd00 RCX: 0000000000000000 [ 80.408540][ T170] RDX: ffff888014b6d4c0 RSI: ffffffff815c8ba5 RDI: fffff520002b7f6a [ 80.421001][ T170] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 80.431148][ T170] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888031f00f20 [ 80.440575][ T170] R13: 0000000000000000 R14: ffff888011eacc80 R15: 0000000000000001 [ 80.450020][ T170] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 80.460823][ T170] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.468710][ T170] CR2: 00007f6903285000 CR3: 000000001ef84000 CR4: 00000000001506e0 [ 80.478316][ T170] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.488970][ T170] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.501559][ T170] Call Trace: [ 80.506009][ T170] nf_unregister_net_hooks+0x117/0x160 [ 80.511820][ T170] arpt_unregister_table_pre_exit+0x67/0x80 [ 80.519938][ T170] ? arptable_filter_net_exit+0x20/0x20 [ 80.526766][ T170] cleanup_net+0x451/0xb10 [ 80.531731][ T170] ? ops_free_list.part.0+0x3d0/0x3d0 [ 80.539649][ T170] process_one_work+0x98d/0x1600 [ 80.547316][ T170] ? pwq_dec_nr_in_flight+0x320/0x320 [ 80.553955][ T170] ? rwlock_bug.part.0+0x90/0x90 [ 80.559467][ T170] ? _raw_spin_lock_irq+0x41/0x50 [ 80.565825][ T170] worker_thread+0x64c/0x1120 [ 80.570897][ T170] ? process_one_work+0x1600/0x1600 [ 80.579492][ T170] kthread+0x3b1/0x4a0 [ 80.584737][ T170] ? __kthread_bind_mask+0xc0/0xc0 [ 80.590710][ T170] ret_from_fork+0x1f/0x30 [ 80.597963][ T170] Kernel panic - not syncing: panic_on_warn set ... [ 80.605031][ T170] CPU: 1 PID: 170 Comm: kworker/u4:3 Not tainted 5.12.0-syzkaller #0 [ 80.613730][ T170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.625918][ T170] Workqueue: netns cleanup_net [ 80.631005][ T170] Call Trace: [ 80.634556][ T170] dump_stack+0x141/0x1d7 [ 80.639157][ T170] panic+0x306/0x73d [ 80.643518][ T170] ? __warn_printk+0xf3/0xf3 [ 80.648129][ T170] ? __warn.cold+0x1a/0x44 [ 80.652642][ T170] ? __nf_unregister_net_hook+0x1eb/0x610 [ 80.658668][ T170] __warn.cold+0x35/0x44 [ 80.663193][ T170] ? __nf_unregister_net_hook+0x1eb/0x610 [ 80.669272][ T170] report_bug+0x1bd/0x210 [ 80.673827][ T170] handle_bug+0x3c/0x60 [ 80.678723][ T170] exc_invalid_op+0x14/0x40 [ 80.683395][ T170] asm_exc_invalid_op+0x12/0x20 [ 80.688669][ T170] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 80.695374][ T170] 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 d8 6d 8a e8 70 4b 8a 01 <0f> 0b e9 e5 00 00 00 e8 89 17 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 80.716191][ T170] RSP: 0018:ffffc900015bfbc0 EFLAGS: 00010286 [ 80.722288][ T170] RAX: 0000000000000000 RBX: ffff888149f0bd00 RCX: 0000000000000000 [ 80.730809][ T170] RDX: ffff888014b6d4c0 RSI: ffffffff815c8ba5 RDI: fffff520002b7f6a [ 80.739068][ T170] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 80.747696][ T170] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888031f00f20 [ 80.756256][ T170] R13: 0000000000000000 R14: ffff888011eacc80 R15: 0000000000000001 [ 80.764525][ T170] ? wake_up_klogd.part.0+0x8e/0xd0 [ 80.770637][ T170] ? vprintk+0x95/0x260 [ 80.775880][ T170] nf_unregister_net_hooks+0x117/0x160 [ 80.781536][ T170] arpt_unregister_table_pre_exit+0x67/0x80 [ 80.787981][ T170] ? arptable_filter_net_exit+0x20/0x20 [ 80.794062][ T170] cleanup_net+0x451/0xb10 [ 80.798505][ T170] ? ops_free_list.part.0+0x3d0/0x3d0 [ 80.804635][ T170] process_one_work+0x98d/0x1600 [ 80.810152][ T170] ? pwq_dec_nr_in_flight+0x320/0x320 [ 80.815862][ T170] ? rwlock_bug.part.0+0x90/0x90 [ 80.821409][ T170] ? _raw_spin_lock_irq+0x41/0x50 [ 80.827117][ T170] worker_thread+0x64c/0x1120 [ 80.833085][ T170] ? process_one_work+0x1600/0x1600 [ 80.839972][ T170] kthread+0x3b1/0x4a0 [ 80.844505][ T170] ? __kthread_bind_mask+0xc0/0xc0 [ 80.850510][ T170] ret_from_fork+0x1f/0x30 [ 80.857329][ T170] Kernel Offset: disabled [ 80.862789][ T170] Rebooting in 86400 seconds..