[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.6' (ECDSA) to the list of known hosts. 2021/05/03 20:59:44 fuzzer started 2021/05/03 20:59:44 connecting to host at 10.128.0.169:34993 2021/05/03 20:59:44 checking machine... 2021/05/03 20:59:44 checking revisions... 2021/05/03 20:59:44 testing simple program... syzkaller login: [ 75.829923][ T8418] chnl_net:caif_netlink_parms(): no params data found [ 75.895308][ T8418] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.905163][ T8418] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.916037][ T8418] device bridge_slave_0 entered promiscuous mode [ 75.926515][ T8418] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.936326][ T8418] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.945233][ T8418] device bridge_slave_1 entered promiscuous mode [ 75.967859][ T8418] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.980135][ T8418] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.005681][ T8418] team0: Port device team_slave_0 added [ 76.014564][ T8418] team0: Port device team_slave_1 added [ 76.033070][ T8418] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.041739][ T8418] 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. [ 76.070429][ T8418] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.085330][ T8418] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.093342][ T8418] 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. [ 76.122791][ T8418] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.152721][ T8418] device hsr_slave_0 entered promiscuous mode [ 76.161208][ T8418] device hsr_slave_1 entered promiscuous mode [ 76.283298][ T8418] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.296151][ T8418] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.308430][ T8418] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.321996][ T8418] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.350279][ T8418] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.360708][ T8418] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.369502][ T8418] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.377339][ T8418] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.425859][ T8418] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.439684][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.453200][ T3893] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.464508][ T3893] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.474119][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.488785][ T8418] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.503496][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.513801][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.521063][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.541856][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.551019][ T3893] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.558342][ T3893] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.582575][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.593036][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.603048][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 76.614302][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 76.624140][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.635766][ T8418] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 76.655753][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 76.664765][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 76.679702][ T8418] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.703716][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 76.725645][ T3789] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 76.735925][ T3789] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 76.745244][ T3789] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 76.757899][ T8418] device veth0_vlan entered promiscuous mode [ 76.772174][ T8418] device veth1_vlan entered promiscuous mode [ 76.794105][ T3789] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 76.803377][ T3789] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 76.818626][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 76.828889][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 76.842304][ T8418] device veth0_macvtap entered promiscuous mode [ 76.856324][ T8418] device veth1_macvtap entered promiscuous mode [ 76.877852][ T8418] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.888353][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 76.899051][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 76.909001][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 76.919619][ T3893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 76.934616][ T8418] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.949902][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 76.961108][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 76.975991][ T8418] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.986805][ T8418] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.998423][ T8418] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.008484][ T8418] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.116493][ T260] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.145012][ T260] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.155852][ T3789] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 77.184545][ T260] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.196275][ T260] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.208660][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/03 20:59:47 building call list... [ 77.840478][ T54] ------------[ cut here ]------------ [ 77.846955][ T54] hook not found, pf 3 num 0 [ 77.848170][ T54] WARNING: CPU: 1 PID: 54 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 77.872937][ T54] Modules linked in: [ 77.877507][ T54] CPU: 1 PID: 54 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 77.890821][ T54] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.908707][ T54] Workqueue: netns cleanup_net [ 77.917353][ T54] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 77.926903][ T54] 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 [ 77.949583][ T54] RSP: 0018:ffffc90000f4fbc0 EFLAGS: 00010286 [ 77.957498][ T54] RAX: 0000000000000000 RBX: ffff888147894100 RCX: 0000000000000000 [ 77.968402][ T54] RDX: ffff888012188000 RSI: ffffffff815c8ba5 RDI: fffff520001e9f6a [ 77.991438][ T54] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 78.000233][ T54] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888028938f20 [ 78.008965][ T54] R13: 0000000000000000 R14: ffff88801c801480 R15: 0000000000000001 [ 78.018065][ T54] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 78.028385][ T54] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.035945][ T54] CR2: 000000c000a00000 CR3: 0000000017e99000 CR4: 00000000001506f0 [ 78.045081][ T54] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.054360][ T54] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.066002][ T54] Call Trace: [ 78.069607][ T54] nf_unregister_net_hooks+0x117/0x160 [ 78.075728][ T54] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.082892][ T54] ? arptable_filter_net_exit+0x20/0x20 [ 78.088683][ T54] cleanup_net+0x451/0xb10 [ 78.094973][ T54] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.101632][ T54] process_one_work+0x98d/0x1600 [ 78.107254][ T54] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.113389][ T54] ? rwlock_bug.part.0+0x90/0x90 [ 78.118476][ T54] ? _raw_spin_lock_irq+0x41/0x50 [ 78.124202][ T54] worker_thread+0x64c/0x1120 [ 78.129462][ T54] ? __kthread_parkme+0x13f/0x1e0 [ 78.135638][ T54] ? process_one_work+0x1600/0x1600 [ 78.141782][ T54] kthread+0x3b1/0x4a0 [ 78.146148][ T54] ? __kthread_bind_mask+0xc0/0xc0 [ 78.155722][ T54] ret_from_fork+0x1f/0x30 [ 78.160306][ T54] Kernel panic - not syncing: panic_on_warn set ... [ 78.167342][ T54] CPU: 0 PID: 54 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 78.175804][ T54] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.186529][ T54] Workqueue: netns cleanup_net [ 78.191579][ T54] Call Trace: [ 78.194872][ T54] dump_stack+0x141/0x1d7 [ 78.199668][ T54] panic+0x306/0x73d [ 78.203815][ T54] ? __warn_printk+0xf3/0xf3 [ 78.208802][ T54] ? __warn.cold+0x1a/0x44 [ 78.213510][ T54] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.219784][ T54] __warn.cold+0x35/0x44 [ 78.224316][ T54] ? __nf_unregister_net_hook+0x1eb/0x610 [ 78.230228][ T54] report_bug+0x1bd/0x210 [ 78.234816][ T54] handle_bug+0x3c/0x60 [ 78.239078][ T54] exc_invalid_op+0x14/0x40 [ 78.243870][ T54] asm_exc_invalid_op+0x12/0x20 [ 78.248901][ T54] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 78.255248][ T54] 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 [ 78.275225][ T54] RSP: 0018:ffffc90000f4fbc0 EFLAGS: 00010286 [ 78.281579][ T54] RAX: 0000000000000000 RBX: ffff888147894100 RCX: 0000000000000000 [ 78.290104][ T54] RDX: ffff888012188000 RSI: ffffffff815c8ba5 RDI: fffff520001e9f6a [ 78.298895][ T54] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 78.307781][ T54] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff888028938f20 [ 78.316305][ T54] R13: 0000000000000000 R14: ffff88801c801480 R15: 0000000000000001 [ 78.325183][ T54] ? wake_up_klogd.part.0+0x8e/0xd0 [ 78.330601][ T54] ? vprintk+0x95/0x260 [ 78.334912][ T54] nf_unregister_net_hooks+0x117/0x160 [ 78.341108][ T54] arpt_unregister_table_pre_exit+0x67/0x80 [ 78.347873][ T54] ? arptable_filter_net_exit+0x20/0x20 [ 78.353533][ T54] cleanup_net+0x451/0xb10 [ 78.358356][ T54] ? ops_free_list.part.0+0x3d0/0x3d0 [ 78.364412][ T54] process_one_work+0x98d/0x1600 [ 78.369475][ T54] ? pwq_dec_nr_in_flight+0x320/0x320 [ 78.375331][ T54] ? rwlock_bug.part.0+0x90/0x90 [ 78.380997][ T54] ? _raw_spin_lock_irq+0x41/0x50 [ 78.386142][ T54] worker_thread+0x64c/0x1120 [ 78.391046][ T54] ? __kthread_parkme+0x13f/0x1e0 [ 78.396475][ T54] ? process_one_work+0x1600/0x1600 [ 78.401874][ T54] kthread+0x3b1/0x4a0 [ 78.406089][ T54] ? __kthread_bind_mask+0xc0/0xc0 [ 78.411502][ T54] ret_from_fork+0x1f/0x30 [ 78.417996][ T54] Kernel Offset: disabled [ 78.422927][ T54] Rebooting in 86400 seconds..