[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Warning: Permanently added '10.128.0.201' (ECDSA) to the list of known hosts. 2021/05/07 08:11:10 fuzzer started 2021/05/07 08:11:10 connecting to host at 10.128.0.169:37823 2021/05/07 08:11:10 checking machine... 2021/05/07 08:11:10 checking revisions... 2021/05/07 08:11:10 testing simple program... Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 86.633071][ T37] audit: type=1400 audit(1620375070.793:8): avc: denied { execmem } for pid=8440 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 88.028758][ T8441] chnl_net:caif_netlink_parms(): no params data found [ 88.100039][ T8441] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.108479][ T8441] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.117568][ T8441] device bridge_slave_0 entered promiscuous mode [ 88.128549][ T8441] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.135861][ T8441] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.145508][ T8441] device bridge_slave_1 entered promiscuous mode [ 88.172623][ T8441] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 88.185918][ T8441] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 88.219640][ T8441] team0: Port device team_slave_0 added [ 88.231493][ T8441] team0: Port device team_slave_1 added [ 88.252752][ T8441] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 88.261382][ T8441] 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. [ 88.289052][ T8441] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 88.303170][ T8441] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 88.310617][ T8441] 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. [ 88.337759][ T8441] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 88.370371][ T8441] device hsr_slave_0 entered promiscuous mode [ 88.377957][ T8441] device hsr_slave_1 entered promiscuous mode [ 88.500911][ T8441] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 88.512667][ T8441] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 88.525341][ T8441] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 88.537473][ T8441] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 88.568859][ T8441] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.576475][ T8441] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.585428][ T8441] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.593010][ T8441] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.644853][ T8441] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.661022][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 88.674085][ T3145] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.685123][ T3145] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.695842][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 88.710749][ T8441] 8021q: adding VLAN 0 to HW filter on device team0 [ 88.724258][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 88.735647][ T3605] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.743162][ T3605] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.758411][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 88.769131][ T3605] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.776478][ T3605] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.800579][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 88.810308][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 88.824049][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 88.842401][ T8441] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 88.855382][ T8441] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 88.869336][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 88.879184][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 88.889377][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 88.908798][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 88.916600][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 88.934586][ T8441] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 88.957696][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 88.981219][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 88.992528][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 89.001626][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 89.016393][ T8441] device veth0_vlan entered promiscuous mode [ 89.030108][ T8441] device veth1_vlan entered promiscuous mode [ 89.058337][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 89.068173][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 89.080364][ T8441] device veth0_macvtap entered promiscuous mode [ 89.091736][ T8441] device veth1_macvtap entered promiscuous mode [ 89.111311][ T8441] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 89.119445][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 89.129366][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 89.138006][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 89.147475][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 89.162186][ T8441] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 89.173146][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 89.182438][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 89.196998][ T8441] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.206760][ T8441] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.216649][ T8441] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.227548][ T8441] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 89.332193][ T107] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.343426][ T107] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.384215][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 89.406049][ T495] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.416909][ T495] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.431423][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/07 08:11:13 building call list... [ 90.178978][ T51] ------------[ cut here ]------------ [ 90.186104][ T51] hook not found, pf 3 num 0 [ 90.186669][ T51] WARNING: CPU: 0 PID: 51 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 90.205033][ T51] Modules linked in: [ 90.211784][ T51] CPU: 0 PID: 51 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 90.221561][ T51] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.235351][ T51] Workqueue: netns cleanup_net [ 90.240270][ T51] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 90.261368][ T51] 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 0f 6e 8a e8 72 40 8a 01 <0f> 0b e9 e5 00 00 00 e8 c9 ed 29 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 90.285692][ T51] RSP: 0018:ffffc90000f77bc0 EFLAGS: 00010286 [ 90.291990][ T51] RAX: 0000000000000000 RBX: ffff88802af7d300 RCX: 0000000000000000 [ 90.302524][ T51] RDX: ffff888015bc6200 RSI: ffffffff815bfe35 RDI: fffff520001eef6a [ 90.311926][ T51] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 90.321703][ T51] R10: ffffffff815b9c6e R11: 0000000000000000 R12: ffff888030356f60 [ 90.331726][ T51] R13: 0000000000000000 R14: ffff888017559200 R15: 0000000000000001 [ 90.341157][ T51] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 90.351572][ T51] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.359406][ T51] CR2: 00007fa0213c2000 CR3: 0000000029a3e000 CR4: 00000000001506f0 [ 90.369628][ T51] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.379016][ T51] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.388639][ T51] Call Trace: [ 90.392038][ T51] nf_unregister_net_hooks+0x117/0x160 [ 90.400071][ T51] arpt_unregister_table_pre_exit+0x67/0x80 [ 90.407428][ T51] ? arptable_filter_net_exit+0x20/0x20 [ 90.413395][ T51] cleanup_net+0x451/0xb10 [ 90.419660][ T51] ? ops_free_list.part.0+0x3d0/0x3d0 [ 90.426842][ T51] process_one_work+0x98d/0x1600 [ 90.431824][ T51] ? pwq_dec_nr_in_flight+0x320/0x320 [ 90.439178][ T51] ? rwlock_bug.part.0+0x90/0x90 [ 90.445226][ T51] ? _raw_spin_lock_irq+0x41/0x50 [ 90.450378][ T51] worker_thread+0x64c/0x1120 [ 90.456873][ T51] ? __kthread_parkme+0x13f/0x1e0 [ 90.462156][ T51] ? process_one_work+0x1600/0x1600 [ 90.469128][ T51] kthread+0x3b1/0x4a0 [ 90.473327][ T51] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 90.482512][ T51] ret_from_fork+0x1f/0x30 [ 90.491555][ T51] Kernel panic - not syncing: panic_on_warn set ... [ 90.498547][ T51] CPU: 0 PID: 51 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 90.507084][ T51] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.517418][ T51] Workqueue: netns cleanup_net [ 90.522308][ T51] Call Trace: [ 90.525812][ T51] dump_stack+0x141/0x1d7 [ 90.530172][ T51] panic+0x306/0x73d [ 90.534183][ T51] ? __warn_printk+0xf3/0xf3 [ 90.539226][ T51] ? __warn.cold+0x1a/0x44 [ 90.543790][ T51] ? __nf_unregister_net_hook+0x1eb/0x610 [ 90.549832][ T51] __warn.cold+0x35/0x44 [ 90.554195][ T51] ? __nf_unregister_net_hook+0x1eb/0x610 [ 90.560112][ T51] report_bug+0x1bd/0x210 [ 90.564468][ T51] handle_bug+0x3c/0x60 [ 90.568838][ T51] exc_invalid_op+0x14/0x40 [ 90.573844][ T51] asm_exc_invalid_op+0x12/0x20 [ 90.579074][ T51] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 90.585605][ T51] 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 0f 6e 8a e8 72 40 8a 01 <0f> 0b e9 e5 00 00 00 e8 c9 ed 29 fa 44 8b 3c 24 4c 89 f8 48 c1 e0 [ 90.606175][ T51] RSP: 0018:ffffc90000f77bc0 EFLAGS: 00010286 [ 90.612353][ T51] RAX: 0000000000000000 RBX: ffff88802af7d300 RCX: 0000000000000000 [ 90.621195][ T51] RDX: ffff888015bc6200 RSI: ffffffff815bfe35 RDI: fffff520001eef6a [ 90.629377][ T51] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 90.637777][ T51] R10: ffffffff815b9c6e R11: 0000000000000000 R12: ffff888030356f60 [ 90.646043][ T51] R13: 0000000000000000 R14: ffff888017559200 R15: 0000000000000001 [ 90.654488][ T51] ? wake_up_klogd.part.0+0x8e/0xd0 [ 90.660344][ T51] ? vprintk+0x95/0x260 [ 90.664711][ T51] nf_unregister_net_hooks+0x117/0x160 [ 90.671098][ T51] arpt_unregister_table_pre_exit+0x67/0x80 [ 90.677103][ T51] ? arptable_filter_net_exit+0x20/0x20 [ 90.682770][ T51] cleanup_net+0x451/0xb10 [ 90.687431][ T51] ? ops_free_list.part.0+0x3d0/0x3d0 [ 90.693384][ T51] process_one_work+0x98d/0x1600 [ 90.698607][ T51] ? pwq_dec_nr_in_flight+0x320/0x320 [ 90.704251][ T51] ? rwlock_bug.part.0+0x90/0x90 [ 90.709315][ T51] ? _raw_spin_lock_irq+0x41/0x50 [ 90.714373][ T51] worker_thread+0x64c/0x1120 [ 90.719255][ T51] ? __kthread_parkme+0x13f/0x1e0 [ 90.724535][ T51] ? process_one_work+0x1600/0x1600 [ 90.730076][ T51] kthread+0x3b1/0x4a0 [ 90.734195][ T51] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 90.740496][ T51] ret_from_fork+0x1f/0x30 [ 90.747088][ T51] Kernel Offset: disabled [ 90.752239][ T51] Rebooting in 86400 seconds..