[ 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 '10.128.1.22' (ECDSA) to the list of known hosts. 2021/05/05 00:56:16 fuzzer started 2021/05/05 00:56:16 connecting to host at 10.128.0.169:46031 2021/05/05 00:56:16 checking machine... 2021/05/05 00:56:16 checking revisions... 2021/05/05 00:56:17 testing simple program... syzkaller login: [ 78.013241][ T8405] chnl_net:caif_netlink_parms(): no params data found [ 78.078519][ T8405] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.086573][ T8405] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.096509][ T8405] device bridge_slave_0 entered promiscuous mode [ 78.106702][ T8405] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.114203][ T8405] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.124171][ T8405] device bridge_slave_1 entered promiscuous mode [ 78.147326][ T8405] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.161019][ T8405] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.186449][ T8405] team0: Port device team_slave_0 added [ 78.194512][ T8405] team0: Port device team_slave_1 added [ 78.213570][ T8405] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.221067][ T8405] 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. [ 78.251437][ T8405] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.266551][ T8405] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.273512][ T8405] 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. [ 78.303330][ T8405] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.331600][ T8405] device hsr_slave_0 entered promiscuous mode [ 78.341014][ T8405] device hsr_slave_1 entered promiscuous mode [ 78.457377][ T8405] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.469481][ T8405] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.480685][ T8405] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.491698][ T8405] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.520527][ T8405] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.528919][ T8405] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.538066][ T8405] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.545389][ T8405] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.592471][ T8405] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.609723][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.621140][ T2939] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.631752][ T2939] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.641029][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 78.656631][ T8405] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.670351][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.680205][ T36] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.687947][ T36] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.700303][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.712231][ T2939] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.720971][ T2939] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.746636][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.756768][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.769462][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.782621][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.799416][ T8405] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 78.813477][ T8405] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.822935][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.843624][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.852774][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.869476][ T8405] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.890605][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.913681][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.923617][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.933804][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.946334][ T8405] device veth0_vlan entered promiscuous mode [ 78.960199][ T8405] device veth1_vlan entered promiscuous mode [ 78.985180][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.994319][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 79.005924][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 79.020119][ T8405] device veth0_macvtap entered promiscuous mode [ 79.030986][ T8405] device veth1_macvtap entered promiscuous mode [ 79.053141][ T8405] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 79.064313][ T4810] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 79.076199][ T4810] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 79.090259][ T8405] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.100330][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 79.111654][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 79.123421][ T8405] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.137737][ T8405] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.149408][ T8405] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.161018][ T8405] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.259772][ T142] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.286640][ T142] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 79.309995][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 79.329891][ T142] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.339318][ T142] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.349970][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/05 00:56:20 building call list... [ 80.002010][ T178] ------------[ cut here ]------------ [ 80.010722][ T178] hook not found, pf 3 num 0 [ 80.011494][ T178] WARNING: CPU: 1 PID: 178 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 80.031320][ T178] Modules linked in: [ 80.036714][ T178] CPU: 1 PID: 178 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 80.047479][ T178] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.059080][ T178] Workqueue: netns cleanup_net [ 80.064004][ T178] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 80.070875][ T178] 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 d8 6d 8a e8 70 4b 8a 01 <0f> 0b e9 e5 00 00 00 e8 89 17 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 80.097796][ T178] RSP: 0018:ffffc9000166fbc0 EFLAGS: 00010286 [ 80.104027][ T178] RAX: 0000000000000000 RBX: ffff888149a25500 RCX: 0000000000000000 [ 80.113407][ T178] RDX: ffff888015b83880 RSI: ffffffff815c8ba5 RDI: fffff520002cdf6a [ 80.123633][ T178] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 80.133039][ T178] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801b438f20 [ 80.143035][ T178] R13: 0000000000000000 R14: ffff888016c64600 R15: 0000000000000001 [ 80.153092][ T178] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 80.165302][ T178] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.172454][ T178] CR2: 000000c000a00000 CR3: 0000000024d8f000 CR4: 00000000001506f0 [ 80.182451][ T178] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.192772][ T178] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.201784][ T178] Call Trace: [ 80.207303][ T178] nf_unregister_net_hooks+0x117/0x160 [ 80.212848][ T178] arpt_unregister_table_pre_exit+0x67/0x80 [ 80.222023][ T178] ? arptable_filter_net_exit+0x20/0x20 [ 80.230756][ T178] cleanup_net+0x451/0xb10 [ 80.239013][ T178] ? ops_free_list.part.0+0x3d0/0x3d0 [ 80.246570][ T178] process_one_work+0x98d/0x1600 [ 80.256737][ T178] ? pwq_dec_nr_in_flight+0x320/0x320 [ 80.262287][ T178] ? rwlock_bug.part.0+0x90/0x90 [ 80.269535][ T178] ? _raw_spin_lock_irq+0x41/0x50 [ 80.275252][ T178] worker_thread+0x64c/0x1120 [ 80.280974][ T178] ? __kthread_parkme+0x13f/0x1e0 [ 80.288875][ T178] ? process_one_work+0x1600/0x1600 [ 80.294490][ T178] kthread+0x3b1/0x4a0 [ 80.299195][ T178] ? __kthread_bind_mask+0xc0/0xc0 [ 80.306753][ T178] ret_from_fork+0x1f/0x30 [ 80.311462][ T178] Kernel panic - not syncing: panic_on_warn set ... [ 80.318419][ T178] CPU: 0 PID: 178 Comm: kworker/u4:4 Not tainted 5.12.0-syzkaller #0 [ 80.326684][ T178] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.340633][ T178] Workqueue: netns cleanup_net [ 80.346105][ T178] Call Trace: [ 80.350459][ T178] dump_stack+0x141/0x1d7 [ 80.355248][ T178] panic+0x306/0x73d [ 80.359585][ T178] ? __warn_printk+0xf3/0xf3 [ 80.364851][ T178] ? __warn.cold+0x1a/0x44 [ 80.369377][ T178] ? __nf_unregister_net_hook+0x1eb/0x610 [ 80.375827][ T178] __warn.cold+0x35/0x44 [ 80.380177][ T178] ? __nf_unregister_net_hook+0x1eb/0x610 [ 80.391359][ T178] report_bug+0x1bd/0x210 [ 80.397570][ T178] handle_bug+0x3c/0x60 [ 80.402182][ T178] exc_invalid_op+0x14/0x40 [ 80.407334][ T178] asm_exc_invalid_op+0x12/0x20 [ 80.412578][ T178] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 80.419322][ T178] 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 d8 6d 8a e8 70 4b 8a 01 <0f> 0b e9 e5 00 00 00 e8 89 17 2e fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 80.440491][ T178] RSP: 0018:ffffc9000166fbc0 EFLAGS: 00010286 [ 80.447664][ T178] RAX: 0000000000000000 RBX: ffff888149a25500 RCX: 0000000000000000 [ 80.457313][ T178] RDX: ffff888015b83880 RSI: ffffffff815c8ba5 RDI: fffff520002cdf6a [ 80.466197][ T178] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 80.477559][ T178] R10: ffffffff815c2a0e R11: 0000000000000000 R12: ffff88801b438f20 [ 80.488309][ T178] R13: 0000000000000000 R14: ffff888016c64600 R15: 0000000000000001 [ 80.497734][ T178] ? wake_up_klogd.part.0+0x8e/0xd0 [ 80.504437][ T178] ? vprintk+0x95/0x260 [ 80.510556][ T178] nf_unregister_net_hooks+0x117/0x160 [ 80.516965][ T178] arpt_unregister_table_pre_exit+0x67/0x80 [ 80.523763][ T178] ? arptable_filter_net_exit+0x20/0x20 [ 80.530911][ T178] cleanup_net+0x451/0xb10 [ 80.536223][ T178] ? ops_free_list.part.0+0x3d0/0x3d0 [ 80.542970][ T178] process_one_work+0x98d/0x1600 [ 80.548149][ T178] ? pwq_dec_nr_in_flight+0x320/0x320 [ 80.554099][ T178] ? rwlock_bug.part.0+0x90/0x90 [ 80.559549][ T178] ? _raw_spin_lock_irq+0x41/0x50 [ 80.564923][ T178] worker_thread+0x64c/0x1120 [ 80.570029][ T178] ? __kthread_parkme+0x13f/0x1e0 [ 80.575809][ T178] ? process_one_work+0x1600/0x1600 [ 80.583211][ T178] kthread+0x3b1/0x4a0 [ 80.587324][ T178] ? __kthread_bind_mask+0xc0/0xc0 [ 80.593447][ T178] ret_from_fork+0x1f/0x30 [ 80.599689][ T178] Kernel Offset: disabled [ 80.604721][ T178] Rebooting in 86400 seconds..