Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.7' (ECDSA) to the list of known hosts. 2021/05/05 02:37:38 fuzzer started 2021/05/05 02:37:39 connecting to host at 10.128.0.169:44551 2021/05/05 02:37:39 checking machine... 2021/05/05 02:37:39 checking revisions... 2021/05/05 02:37:39 testing simple program... syzkaller login: [ 78.521957][ T8484] chnl_net:caif_netlink_parms(): no params data found [ 78.581225][ T8484] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.590541][ T8484] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.601193][ T8484] device bridge_slave_0 entered promiscuous mode [ 78.611856][ T8484] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.621861][ T8484] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.631305][ T8484] device bridge_slave_1 entered promiscuous mode [ 78.653309][ T8484] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.666152][ T8484] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.688724][ T8484] team0: Port device team_slave_0 added [ 78.697145][ T8484] team0: Port device team_slave_1 added [ 78.716460][ T8484] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.724457][ T8484] 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. [ 78.753398][ T8484] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.769071][ T8484] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.777068][ T8484] 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. [ 78.808364][ T8484] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.836933][ T8484] device hsr_slave_0 entered promiscuous mode [ 78.843911][ T8484] device hsr_slave_1 entered promiscuous mode [ 78.960928][ T8484] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.972729][ T8484] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.985584][ T8484] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.996947][ T8484] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 79.024387][ T8484] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.031747][ T8484] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.040159][ T8484] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.047442][ T8484] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.098487][ T8484] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.112988][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 79.126740][ T2946] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.136954][ T2946] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.146584][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 79.161376][ T8484] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.174269][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 79.183665][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.191128][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.203575][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.213485][ T2946] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.221224][ T2946] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.246140][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.255602][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 79.270018][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.288142][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.297090][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.311180][ T8484] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 79.334175][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.343162][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.357337][ T8484] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.377668][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 79.400920][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 79.410628][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 79.419186][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 79.432040][ T8484] device veth0_vlan entered promiscuous mode [ 79.445972][ T8484] device veth1_vlan entered promiscuous mode [ 79.469636][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 79.479084][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 79.489413][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 79.505716][ T8484] device veth0_macvtap entered promiscuous mode [ 79.518941][ T8484] device veth1_macvtap entered promiscuous mode [ 79.543657][ T8484] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 79.554125][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 79.563586][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 79.577685][ T8484] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.586249][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.595542][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 79.609400][ T8484] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.621429][ T8484] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.630690][ T8484] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.641444][ T8484] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 79.746884][ T199] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.756860][ T199] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.770388][ T2946] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 79.803739][ T195] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.813288][ T195] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.825302][ T8694] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/05 02:37:42 building call list... [ 82.340927][ T8466] can: request_module (can-proto-0) failed. [ 82.356781][ T8466] can: request_module (can-proto-0) failed. [ 82.372610][ T8466] can: request_module (can-proto-0) failed. [ 82.530813][ T199] ------------[ cut here ]------------ [ 82.544384][ T199] hook not found, pf 3 num 0 [ 82.544958][ T199] WARNING: CPU: 0 PID: 199 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 82.585160][ T199] Modules linked in: [ 82.590180][ T199] CPU: 0 PID: 199 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 82.614329][ T199] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.634543][ T199] Workqueue: netns cleanup_net [ 82.640117][ T199] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 82.664504][ T199] 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 81 6e 8a e8 86 4b 8a 01 <0f> 0b e9 e5 00 00 00 e8 99 ad 2b fa 44 8b 3c 24 4c 89 f8 48 c1 e0 executing program [ 82.714481][ T199] RSP: 0018:ffffc9000176fbc0 EFLAGS: 00010286 [ 82.720718][ T199] RAX: 0000000000000000 RBX: ffff888028536a00 RCX: 0000000000000000 [ 82.749178][ T8484] syz-executor.0 (8484) used greatest stack depth: 22576 bytes left [ 82.757714][ T199] RDX: ffff8880141b3880 RSI: ffffffff815caaf5 RDI: fffff520002edf6a [ 82.767558][ T199] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 82.777181][ T199] R10: ffffffff815c495e R11: 0000000000000000 R12: ffff88801d0a8f20 [ 82.786919][ T199] R13: 0000000000000000 R14: ffff8880193cc180 R15: 0000000000000001 [ 82.797601][ T199] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 82.809834][ T199] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.817059][ T199] CR2: 00007febd731a000 CR3: 0000000022148000 CR4: 00000000001506f0 [ 82.825612][ T199] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.833774][ T199] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.844141][ T199] Call Trace: [ 82.848058][ T199] nf_unregister_net_hooks+0x117/0x160 [ 82.854092][ T199] arpt_unregister_table_pre_exit+0x67/0x80 [ 82.860863][ T199] ? arptable_filter_net_exit+0x20/0x20 [ 82.867279][ T199] cleanup_net+0x451/0xb10 [ 82.872042][ T199] ? ops_free_list.part.0+0x3d0/0x3d0 [ 82.878568][ T199] process_one_work+0x98d/0x1600 [ 82.883943][ T199] ? pwq_dec_nr_in_flight+0x320/0x320 [ 82.889902][ T199] ? rwlock_bug.part.0+0x90/0x90 [ 82.895816][ T199] ? _raw_spin_lock_irq+0x41/0x50 [ 82.901006][ T199] worker_thread+0x64c/0x1120 [ 82.906374][ T199] ? __kthread_parkme+0x13f/0x1e0 [ 82.911459][ T199] ? process_one_work+0x1600/0x1600 [ 82.918006][ T199] kthread+0x3b1/0x4a0 [ 82.922134][ T199] ? __kthread_bind_mask+0xc0/0xc0 [ 82.927856][ T199] ret_from_fork+0x1f/0x30 [ 82.932351][ T199] Kernel panic - not syncing: panic_on_warn set ... [ 82.939046][ T199] CPU: 0 PID: 199 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 82.947660][ T199] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.957786][ T199] Workqueue: netns cleanup_net [ 82.962697][ T199] Call Trace: [ 82.965978][ T199] dump_stack+0x141/0x1d7 [ 82.970316][ T199] panic+0x306/0x73d [ 82.974254][ T199] ? __warn_printk+0xf3/0xf3 [ 82.978858][ T199] ? __warn.cold+0x1a/0x44 [ 82.983399][ T199] ? __nf_unregister_net_hook+0x1eb/0x610 [ 82.989172][ T199] __warn.cold+0x35/0x44 [ 82.993979][ T199] ? __nf_unregister_net_hook+0x1eb/0x610 [ 82.999747][ T199] report_bug+0x1bd/0x210 [ 83.004280][ T199] handle_bug+0x3c/0x60 [ 83.008557][ T199] exc_invalid_op+0x14/0x40 [ 83.013083][ T199] asm_exc_invalid_op+0x12/0x20 [ 83.017964][ T199] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 83.024408][ T199] 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 81 6e 8a e8 86 4b 8a 01 <0f> 0b e9 e5 00 00 00 e8 99 ad 2b fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 83.044134][ T199] RSP: 0018:ffffc9000176fbc0 EFLAGS: 00010286 [ 83.050229][ T199] RAX: 0000000000000000 RBX: ffff888028536a00 RCX: 0000000000000000 [ 83.058227][ T199] RDX: ffff8880141b3880 RSI: ffffffff815caaf5 RDI: fffff520002edf6a [