[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started OpenBSD Secure Shell server. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.224' (ECDSA) to the list of known hosts. 2021/05/04 05:06:24 fuzzer started 2021/05/04 05:06:24 connecting to host at 10.128.0.169:32957 2021/05/04 05:06:24 checking machine... 2021/05/04 05:06:24 checking revisions... 2021/05/04 05:06:24 testing simple program... syzkaller login: [ 72.824718][ T8410] chnl_net:caif_netlink_parms(): no params data found [ 72.878329][ T8410] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.885686][ T8410] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.896572][ T8410] device bridge_slave_0 entered promiscuous mode [ 72.906828][ T8410] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.916032][ T8410] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.925114][ T8410] device bridge_slave_1 entered promiscuous mode [ 72.945450][ T8410] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.956696][ T8410] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.979938][ T8410] team0: Port device team_slave_0 added [ 72.987236][ T8410] team0: Port device team_slave_1 added [ 73.004777][ T8410] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.011843][ T8410] 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. [ 73.038070][ T8410] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.052517][ T8410] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.060842][ T8410] 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. [ 73.088370][ T8410] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.115453][ T8410] device hsr_slave_0 entered promiscuous mode [ 73.122275][ T8410] device hsr_slave_1 entered promiscuous mode [ 73.226468][ T8410] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 73.237859][ T8410] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 73.249789][ T8410] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 73.260394][ T8410] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 73.286584][ T8410] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.293892][ T8410] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.302477][ T8410] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.309657][ T8410] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.356337][ T8410] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.371498][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.384780][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.393746][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.403209][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 73.417552][ T8410] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.430122][ T4134] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.438897][ T4134] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.446514][ T4134] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.460632][ T4134] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.471287][ T4134] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.478569][ T4134] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.498363][ T4134] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.507928][ T4134] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.521031][ T4134] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.535745][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.549874][ T4134] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.560578][ T8410] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.580309][ T4134] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.587748][ T4134] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.602147][ T8410] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.631420][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.653080][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.661968][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.671627][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.683428][ T8410] device veth0_vlan entered promiscuous mode [ 73.695877][ T8410] device veth1_vlan entered promiscuous mode [ 73.716813][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 73.726164][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 73.736015][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 73.749052][ T8410] device veth0_macvtap entered promiscuous mode [ 73.759182][ T8410] device veth1_macvtap entered promiscuous mode [ 73.778888][ T8410] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 73.787518][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 73.797618][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 73.811368][ T8410] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 73.818899][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 73.828869][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 73.843172][ T8410] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.852229][ T8410] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.861275][ T8410] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.870321][ T8410] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 73.963259][ T466] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.990292][ T466] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.010201][ T6344] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.021351][ T202] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.029310][ T202] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.039053][ T4134] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/04 05:06:27 building call list... executing program [ 74.687110][ T466] ------------[ cut here ]------------ [ 74.693370][ T466] hook not found, pf 3 num 0 [ 74.694016][ T466] WARNING: CPU: 0 PID: 466 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 74.711642][ T466] Modules linked in: [ 74.715885][ T466] CPU: 0 PID: 466 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 74.725396][ T466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.737305][ T466] Workqueue: netns cleanup_net [ 74.742725][ T466] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 74.749834][ T466] 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 [ 74.772724][ T466] RSP: 0018:ffffc900020efbc0 EFLAGS: 00010286 [ 74.778958][ T466] RAX: 0000000000000000 RBX: ffff8880211e4c00 RCX: 0000000000000000 [ 74.788537][ T466] RDX: ffff888012f61c40 RSI: ffffffff815c8ba5 RDI: fffff5200041df6a [ 74.797994][ T466] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 74.807131][ T466] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888035fa0f20 [ 74.817524][ T466] R13: 0000000000000000 R14: ffff8880179f4a80 R15: 0000000000000001 [ 74.836522][ T466] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 74.847380][ T466] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.855198][ T466] CR2: 00007f88ec0b4000 CR3: 000000001277d000 CR4: 00000000001506f0 [ 74.864583][ T466] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.874537][ T466] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.883481][ T466] Call Trace: [ 74.886879][ T466] nf_unregister_net_hooks+0x117/0x160 [ 74.895319][ T466] arpt_unregister_table_pre_exit+0x67/0x80 [ 74.903689][ T466] ? arptable_filter_net_exit+0x20/0x20 [ 74.910422][ T466] cleanup_net+0x451/0xb10 [ 74.915061][ T466] ? ops_free_list.part.0+0x3d0/0x3d0 [ 74.922875][ T466] process_one_work+0x98d/0x1600 [ 74.928044][ T466] ? pwq_dec_nr_in_flight+0x320/0x320 [ 74.935856][ T466] ? rwlock_bug.part.0+0x90/0x90 [ 74.942100][ T466] ? _raw_spin_lock_irq+0x41/0x50 [ 74.947302][ T466] worker_thread+0x64c/0x1120 [ 74.953448][ T466] ? __kthread_parkme+0x13f/0x1e0 [ 74.958793][ T466] ? process_one_work+0x1600/0x1600 [ 74.965965][ T466] kthread+0x3b1/0x4a0 [ 74.972376][ T466] ? __kthread_bind_mask+0xc0/0xc0 [ 74.977540][ T466] ret_from_fork+0x1f/0x30 [ 74.983878][ T466] Kernel panic - not syncing: panic_on_warn set ... [ 74.990597][ T466] CPU: 0 PID: 466 Comm: kworker/u4:5 Not tainted 5.12.0-syzkaller #0 [ 74.999051][ T466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.009214][ T466] Workqueue: netns cleanup_net [ 75.014500][ T466] Call Trace: [ 75.017795][ T466] dump_stack+0x141/0x1d7 [ 75.022237][ T466] panic+0x306/0x73d [ 75.026151][ T466] ? __warn_printk+0xf3/0xf3 [ 75.030943][ T466] ? __warn.cold+0x1a/0x44 [ 75.035414][ T466] ? __nf_unregister_net_hook+0x1eb/0x610 [ 75.041163][ T466] __warn.cold+0x35/0x44 [ 75.045515][ T466] ? __nf_unregister_net_hook+0x1eb/0x610 [ 75.051310][ T466] report_bug+0x1bd/0x210 [ 75.055666][ T466] handle_bug+0x3c/0x60 [ 75.059848][ T466] exc_invalid_op+0x14/0x40 [ 75.064468][ T466] asm_exc_invalid_op+0x12/0x20 [ 75.069511][ T466] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 75.075979][ T466] 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 [ 75.096393][ T466] RSP: 0018:ffffc900020efbc0 EFLAGS: 00010286 [ 75.102668][ T466] RAX: 0000000000000000 RBX: ffff8880211e4c00 RCX: 0000000000000000 [ 75.110669][ T466] RDX: ffff888012f61c40 RSI: ffffffff815c8ba5 RDI: fffff5200041df6a [ 75.118746][ T466] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 75.126732][ T466] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888035fa0f20 [ 75.135188][ T466] R13: 0000000000000000 R14: ffff8880179f4a80 R15: 0000000000000001 [ 75.143201][ T466] ? wake_up_klogd.part.0+0x8e/0xd0 [ 75.148621][ T466] ? vprintk+0x95/0x260 [ 75.153187][ T466] nf_unregister_net_hooks+0x117/0x160 [ 75.158769][ T466] arpt_unregister_table_pre_exit+0x67/0x80 [ 75.165038][ T466] ? arptable_filter_net_exit+0x20/0x20 [ 75.170738][ T466] cleanup_net+0x451/0xb10 [ 75.175282][ T466] ? ops_free_list.part.0+0x3d0/0x3d0 [ 75.180770][ T466] process_one_work+0x98d/0x1600 [ 75.185909][ T466] ? pwq_dec_nr_in_flight+0x320/0x320 [ 75.191754][ T466] ? rwlock_bug.part.0+0x90/0x90 [ 75.196979][ T466] ? _raw_spin_lock_irq+0x41/0x50 [ 75.202224][ T466] worker_thread+0x64c/0x1120 [ 75.206943][ T466] ? __kthread_parkme+0x13f/0x1e0 [ 75.212117][ T466] ? process_one_work+0x1600/0x1600 [ 75.217339][ T466] kthread+0x3b1/0x4a0 [ 75.221425][ T466] ? __kthread_bind_mask+0xc0/0xc0 [ 75.226557][ T466] ret_from_fork+0x1f/0x30 [ 75.231316][ T466] Kernel Offset: disabled [ 75.236107][ T466] Rebooting in 86400 seconds..