[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.82' (ECDSA) to the list of known hosts. 2021/05/03 15:30:53 fuzzer started 2021/05/03 15:30:53 connecting to host at 10.128.0.169:44553 2021/05/03 15:30:53 checking machine... 2021/05/03 15:30:53 checking revisions... 2021/05/03 15:30:53 testing simple program... syzkaller login: [ 80.072994][ T8422] chnl_net:caif_netlink_parms(): no params data found [ 80.127888][ T8422] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.138310][ T8422] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.148976][ T8422] device bridge_slave_0 entered promiscuous mode [ 80.163120][ T8422] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.177440][ T8422] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.189215][ T8422] device bridge_slave_1 entered promiscuous mode [ 80.210963][ T8422] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.224080][ T8422] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.249739][ T8422] team0: Port device team_slave_0 added [ 80.261760][ T8422] team0: Port device team_slave_1 added [ 80.283156][ T8422] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.293020][ T8422] 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. [ 80.322888][ T8422] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.340415][ T8422] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.348993][ T8422] 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. [ 80.377136][ T8422] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.405357][ T8422] device hsr_slave_0 entered promiscuous mode [ 80.413856][ T8422] device hsr_slave_1 entered promiscuous mode [ 80.523278][ T8422] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 80.535178][ T8422] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 80.546813][ T8422] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 80.557215][ T8422] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 80.584824][ T8422] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.592988][ T8422] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.601185][ T8422] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.608511][ T8422] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.657019][ T8422] 8021q: adding VLAN 0 to HW filter on device bond0 [ 80.673875][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 80.686855][ T36] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.696920][ T36] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.708349][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 80.724822][ T8422] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.737059][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 80.746968][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.754891][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.770801][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 80.780757][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.790187][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.812126][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 80.831245][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 80.840943][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 80.851982][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 80.864462][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 80.877620][ T8422] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 80.897877][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 80.906545][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 80.923583][ T8422] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.946773][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 80.971901][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 80.982162][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 80.992026][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 81.003715][ T8422] device veth0_vlan entered promiscuous mode [ 81.016804][ T8422] device veth1_vlan entered promiscuous mode [ 81.042086][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 81.052144][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 81.061781][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 81.074371][ T8422] device veth0_macvtap entered promiscuous mode [ 81.086518][ T8422] device veth1_macvtap entered promiscuous mode [ 81.105596][ T8422] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 81.117014][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 81.130913][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 81.145518][ T8422] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 81.155078][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready executing program [ 81.167340][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 81.181203][ T8422] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.193752][ T8422] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.203411][ T8422] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.212653][ T8422] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.327870][ T188] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.359988][ T188] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.362422][ T49] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.369177][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 81.377467][ T49] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.401061][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/03 15:30:56 building call list... [ 82.076923][ T49] ------------[ cut here ]------------ [ 82.084833][ T49] hook not found, pf 3 num 0 [ 82.085505][ T49] WARNING: CPU: 0 PID: 49 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 82.103924][ T49] Modules linked in: [ 82.107967][ T49] CPU: 0 PID: 49 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 82.122328][ T49] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.135579][ T49] Workqueue: netns cleanup_net [ 82.142751][ T49] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 82.150503][ T49] 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 40 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 82.174557][ T49] RSP: 0018:ffffc90000f0fbc0 EFLAGS: 00010286 [ 82.183024][ T49] RAX: 0000000000000000 RBX: ffff8881473f3d00 RCX: 0000000000000000 [ 82.193883][ T49] RDX: ffff88801206d4c0 RSI: ffffffff815c8ba5 RDI: fffff520001e1f6a [ 82.216259][ T49] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 82.232781][ T49] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888019a40f20 [ 82.241905][ T49] R13: 0000000000000000 R14: ffff88801ddb3680 R15: 0000000000000001 [ 82.251716][ T49] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 82.261297][ T49] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.268004][ T49] CR2: 00007feb28e99018 CR3: 0000000022165000 CR4: 00000000001506f0 [ 82.276952][ T49] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.287284][ T49] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.297000][ T49] Call Trace: [ 82.303103][ T49] nf_unregister_net_hooks+0x117/0x160 [ 82.310872][ T49] arpt_unregister_table_pre_exit+0x67/0x80 [ 82.317661][ T49] ? arptable_filter_net_exit+0x20/0x20 [ 82.325512][ T49] cleanup_net+0x451/0xb10 [ 82.331638][ T49] ? ops_free_list.part.0+0x3d0/0x3d0 [ 82.337168][ T49] process_one_work+0x98d/0x1600 [ 82.344661][ T49] ? pwq_dec_nr_in_flight+0x320/0x320 [ 82.351276][ T49] ? rwlock_bug.part.0+0x90/0x90 [ 82.356407][ T49] ? _raw_spin_lock_irq+0x41/0x50 [ 82.365256][ T49] worker_thread+0x64c/0x1120 [ 82.371604][ T49] ? __kthread_parkme+0x13f/0x1e0 [ 82.376925][ T49] ? process_one_work+0x1600/0x1600 [ 82.383766][ T49] kthread+0x3b1/0x4a0 [ 82.388752][ T49] ? __kthread_bind_mask+0xc0/0xc0 [ 82.396391][ T49] ret_from_fork+0x1f/0x30 [ 82.403547][ T49] Kernel panic - not syncing: panic_on_warn set ... [ 82.410444][ T49] CPU: 0 PID: 49 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 82.418810][ T49] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.430488][ T49] Workqueue: netns cleanup_net [ 82.435984][ T49] Call Trace: [ 82.439301][ T49] dump_stack+0x141/0x1d7 [ 82.443761][ T49] panic+0x306/0x73d [ 82.448161][ T49] ? __warn_printk+0xf3/0xf3 [ 82.453209][ T49] ? __warn.cold+0x1a/0x44 [ 82.458532][ T49] ? __nf_unregister_net_hook+0x1eb/0x610 [ 82.465078][ T49] __warn.cold+0x35/0x44 [ 82.469519][ T49] ? __nf_unregister_net_hook+0x1eb/0x610 [ 82.475960][ T49] report_bug+0x1bd/0x210 [ 82.480320][ T49] handle_bug+0x3c/0x60 [ 82.484584][ T49] exc_invalid_op+0x14/0x40 [ 82.489194][ T49] asm_exc_invalid_op+0x12/0x20 [ 82.494074][ T49] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 82.500688][ T49] 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 40 4c 8a 01 <0f> 0b e9 e5 00 00 00 e8 59 48 30 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 82.521296][ T49] RSP: 0018:ffffc90000f0fbc0 EFLAGS: 00010286 [ 82.527974][ T49] RAX: 0000000000000000 RBX: ffff8881473f3d00 RCX: 0000000000000000 [ 82.536350][ T49] RDX: ffff88801206d4c0 RSI: ffffffff815c8ba5 RDI: fffff520001e1f6a [ 82.544698][ T49] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 82.553312][ T49] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888019a40f20 [ 82.561517][ T49] R13: 0000000000000000 R14: ffff88801ddb3680 R15: 0000000000000001 [ 82.569996][ T49] ? wake_up_klogd.part.0+0x8e/0xd0 [ 82.575638][ T49] ? vprintk+0x95/0x260 [ 82.581141][ T49] nf_unregister_net_hooks+0x117/0x160 [ 82.587365][ T49] arpt_unregister_table_pre_exit+0x67/0x80 [ 82.593487][ T49] ? arptable_filter_net_exit+0x20/0x20 [ 82.599333][ T49] cleanup_net+0x451/0xb10 [ 82.604359][ T49] ? ops_free_list.part.0+0x3d0/0x3d0 [ 82.610050][ T49] process_one_work+0x98d/0x1600 [ 82.615119][ T49] ? pwq_dec_nr_in_flight+0x320/0x320 [ 82.620955][ T49] ? rwlock_bug.part.0+0x90/0x90 [ 82.626098][ T49] ? _raw_spin_lock_irq+0x41/0x50 [ 82.631254][ T49] worker_thread+0x64c/0x1120 [ 82.636159][ T49] ? __kthread_parkme+0x13f/0x1e0 [ 82.642094][ T49] ? process_one_work+0x1600/0x1600 [ 82.647314][ T49] kthread+0x3b1/0x4a0 [ 82.651773][ T49] ? __kthread_bind_mask+0xc0/0xc0 [ 82.658231][ T49] ret_from_fork+0x1f/0x30 [ 82.665245][ T49] Kernel Offset: disabled [ 82.669984][ T49] Rebooting in 86400 seconds..