Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.20' (ECDSA) to the list of known hosts. 2021/05/03 14:44:35 fuzzer started 2021/05/03 14:44:36 connecting to host at 10.128.0.169:41481 2021/05/03 14:44:36 checking machine... 2021/05/03 14:44:36 checking revisions... 2021/05/03 14:44:36 testing simple program... syzkaller login: [ 72.366865][ T8426] chnl_net:caif_netlink_parms(): no params data found [ 72.418289][ T8426] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.426948][ T8426] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.435885][ T8426] device bridge_slave_0 entered promiscuous mode [ 72.446095][ T8426] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.453383][ T8426] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.461105][ T8426] device bridge_slave_1 entered promiscuous mode [ 72.481079][ T8426] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.492535][ T8426] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.516009][ T8426] team0: Port device team_slave_0 added [ 72.524464][ T8426] team0: Port device team_slave_1 added [ 72.543469][ T8426] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 72.552114][ T8426] 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. [ 72.578319][ T8426] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 72.591236][ T8426] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 72.598411][ T8426] 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. [ 72.624675][ T8426] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 72.651502][ T8426] device hsr_slave_0 entered promiscuous mode [ 72.658403][ T8426] device hsr_slave_1 entered promiscuous mode [ 72.760341][ T8426] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 72.773621][ T8426] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 72.785185][ T8426] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 72.795266][ T8426] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 72.820446][ T8426] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.827977][ T8426] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.836157][ T8426] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.843335][ T8426] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.890460][ T8426] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.905614][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.916980][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.926947][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.935620][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 72.949370][ T8426] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.961225][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.970063][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.977462][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.988871][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.998242][ T4856] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.005364][ T4856] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.026739][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.042994][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.050992][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.059977][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.075177][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.085754][ T8426] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.104253][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.111688][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.125469][ T8426] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.152536][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.169349][ T8426] device veth0_vlan entered promiscuous mode [ 73.177653][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.189818][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.198786][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.210651][ T8426] device veth1_vlan entered promiscuous mode [ 73.235330][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.244551][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.254672][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.265804][ T8426] device veth0_macvtap entered promiscuous mode [ 73.278816][ T8426] device veth1_macvtap entered promiscuous mode [ 73.299155][ T8426] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.307823][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.319228][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.331124][ T8426] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.339352][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.351976][ T8426] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.362424][ T8426] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.374020][ T8426] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.383651][ T8426] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.490111][ T25] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.498991][ T25] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.528945][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 73.546808][ T25] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.561028][ T25] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.571042][ T4856] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/03 14:44:39 building call list... executing program [ 74.255346][ T25] ------------[ cut here ]------------ [ 74.261225][ T25] hook not found, pf 3 num 0 [ 74.261876][ T25] WARNING: CPU: 0 PID: 25 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 74.300262][ T25] Modules linked in: [ 74.310822][ T25] CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 74.320436][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.331349][ T25] Workqueue: netns cleanup_net [ 74.338549][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 74.345766][ T25] 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 [ 74.381005][ T25] RSP: 0018:ffffc90000dffbc0 EFLAGS: 00010286 [ 74.389962][ T25] RAX: 0000000000000000 RBX: ffff888147c9c300 RCX: 0000000000000000 [ 74.398844][ T25] RDX: ffff888011eeb880 RSI: ffffffff815c8ba5 RDI: fffff520001bff6a [ 74.409160][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 74.418392][ T25] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888032570f20 [ 74.428942][ T25] R13: 0000000000000000 R14: ffff88801932ab80 R15: 0000000000000001 [ 74.441835][ T25] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 74.453269][ T25] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.459920][ T25] CR2: 00007f0d9b73f028 CR3: 000000001d305000 CR4: 00000000001506f0 [ 74.469183][ T25] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.479425][ T25] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.488636][ T25] Call Trace: [ 74.494042][ T25] nf_unregister_net_hooks+0x117/0x160 [ 74.499604][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 74.506724][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 74.522064][ T25] cleanup_net+0x451/0xb10 [ 74.526559][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 74.536323][ T25] process_one_work+0x98d/0x1600 [ 74.541337][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 74.548145][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 74.554355][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 74.559551][ T25] worker_thread+0x64c/0x1120 [ 74.565391][ T25] ? __kthread_parkme+0x13f/0x1e0 [ 74.570555][ T25] ? process_one_work+0x1600/0x1600 [ 74.576963][ T25] kthread+0x3b1/0x4a0 [ 74.581174][ T25] ? __kthread_bind_mask+0xc0/0xc0 [ 74.587973][ T25] ret_from_fork+0x1f/0x30 [ 74.595348][ T25] Kernel panic - not syncing: panic_on_warn set ... [ 74.601971][ T25] CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 74.610062][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.620346][ T25] Workqueue: netns cleanup_net [ 74.625245][ T25] Call Trace: [ 74.628560][ T25] dump_stack+0x141/0x1d7 [ 74.633003][ T25] panic+0x306/0x73d [ 74.636926][ T25] ? __warn_printk+0xf3/0xf3 [ 74.641720][ T25] ? __warn.cold+0x1a/0x44 [ 74.646161][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 74.652003][ T25] __warn.cold+0x35/0x44 [ 74.656491][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 74.662405][ T25] report_bug+0x1bd/0x210 [ 74.666765][ T25] handle_bug+0x3c/0x60 [ 74.671040][ T25] exc_invalid_op+0x14/0x40 [ 74.676216][ T25] asm_exc_invalid_op+0x12/0x20 [ 74.681177][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 74.687547][ T25] 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 [ 74.707354][ T25] RSP: 0018:ffffc90000dffbc0 EFLAGS: 00010286 [ 74.713618][ T25] RAX: 0000000000000000 RBX: ffff888147c9c300 RCX: 0000000000000000 [ 74.721618][ T25] RDX: ffff888011eeb880 RSI: ffffffff815c8ba5 RDI: fffff520001bff6a [ 74.729734][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 74.737725][ T25] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888032570f20 [ 74.745746][ T25] R13: 0000000000000000 R14: ffff88801932ab80 R15: 0000000000000001 [ 74.753742][ T25] ? wake_up_klogd.part.0+0x8e/0xd0 [ 74.759060][ T25] ? vprintk+0x95/0x260 [ 74.763335][ T25] nf_unregister_net_hooks+0x117/0x160 [ 74.768869][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 74.774882][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 74.780601][ T25] cleanup_net+0x451/0xb10 [ 74.785056][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 74.790466][ T25] process_one_work+0x98d/0x1600 [ 74.795542][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 74.801065][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 74.806240][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 74.811296][ T25] worker_thread+0x64c/0x1120 [ 74.816013][ T25] ? __kthread_parkme+0x13f/0x1e0 [ 74.821063][ T25] ? process_one_work+0x1600/0x1600 [ 74.826816][ T25] kthread+0x3b1/0x4a0 [ 74.830999][ T25] ? __kthread_bind_mask+0xc0/0xc0 [ 74.836139][ T25] ret_from_fork+0x1f/0x30 [ 74.841844][ T25] Kernel Offset: disabled [ 74.846542][ T25] Rebooting in 86400 seconds..