[ 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 Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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. Warning: Permanently added '10.128.0.203' (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 10.128.0.169:44539 2021/05/07 08:11:10 checking machine... 2021/05/07 08:11:10 checking revisions... Debian GNU/Linux 9 syzkaller ttyS0 2021/05/07 08:11:10 testing simple program... syzkaller login: [ 86.785853][ T37] audit: type=1400 audit(1620375070.586:8): avc: denied { execmem } for pid=8441 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 88.197325][ T8442] chnl_net:caif_netlink_parms(): no params data found [ 88.259745][ T8442] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.275814][ T8442] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.287050][ T8442] device bridge_slave_0 entered promiscuous mode [ 88.300098][ T8442] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.310797][ T8442] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.321798][ T8442] device bridge_slave_1 entered promiscuous mode [ 88.353207][ T8442] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 88.368850][ T8442] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 88.398435][ T8442] team0: Port device team_slave_0 added [ 88.408745][ T8442] team0: Port device team_slave_1 added [ 88.429947][ T8442] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 88.442980][ T8442] 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. [ 88.480786][ T8442] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 88.496823][ T8442] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 88.505505][ T8442] 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. [ 88.543488][ T8442] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 88.581342][ T8442] device hsr_slave_0 entered promiscuous mode [ 88.593497][ T8442] device hsr_slave_1 entered promiscuous mode [ 88.766014][ T8442] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 88.789950][ T8442] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 88.805740][ T8442] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 88.821437][ T8442] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 88.868457][ T8442] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.876554][ T8442] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.885865][ T8442] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.893074][ T8442] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.956499][ T8442] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.971758][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 88.987077][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.998127][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 89.009806][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 89.027130][ T8442] 8021q: adding VLAN 0 to HW filter on device team0 [ 89.045328][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 89.056663][ T3752] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.066113][ T3752] bridge0: port 1(bridge_slave_0) entered forwarding state [ 89.086660][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 89.097592][ T3752] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.107947][ T3752] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.136392][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 89.148014][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 89.160260][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 89.179202][ T8442] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 89.202124][ T8442] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 89.222224][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 89.235369][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 89.265739][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 89.283981][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 89.308863][ T8442] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 89.339112][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 89.353410][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 89.382295][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 89.397709][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 89.411997][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 89.424211][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready executing program [ 89.440365][ T8442] device veth0_vlan entered promiscuous mode [ 89.460410][ T8442] device veth1_vlan entered promiscuous mode [ 89.495437][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 89.506926][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 89.519854][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 89.531637][ T3752] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 89.550233][ T8442] device veth0_macvtap entered promiscuous mode [ 89.564744][ T8442] device veth1_macvtap entered promiscuous mode [ 89.585195][ T8442] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 89.603259][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 89.618067][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 89.631236][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 89.646805][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 89.667978][ T8442] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 89.682681][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 89.695802][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 89.712033][ T8442] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.727485][ T8442] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.745185][ T8442] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.756267][ T8442] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.868384][ T25] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.888037][ T25] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.923880][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 89.943032][ T25] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.952905][ T25] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.966861][ T2939] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 90.016066][ T5] Bluetooth: hci0: command 0x0409 tx timeout 2021/05/07 08:11:13 building call list... [ 90.744200][ T25] ------------[ cut here ]------------ [ 90.760111][ T25] hook not found, pf 3 num 0 [ 90.760668][ T25] WARNING: CPU: 0 PID: 25 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 90.786093][ T25] Modules linked in: [ 90.790198][ T25] CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 90.801246][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.817475][ T25] Workqueue: netns cleanup_net [ 90.822782][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 90.832700][ T25] 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 [ 90.857468][ T25] RSP: 0018:ffffc90000e17bc0 EFLAGS: 00010286 [ 90.864362][ T25] RAX: 0000000000000000 RBX: ffff88802af2ae00 RCX: 0000000000000000 [ 90.873263][ T25] RDX: ffff8880161ba2c0 RSI: ffffffff815bfe35 RDI: fffff520001c2f6a [ 90.885121][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 90.893640][ T25] R10: ffffffff815b9c6e R11: 0000000000000000 R12: ffff88802ffcef60 [ 90.904371][ T25] R13: 0000000000000000 R14: ffff888030bb2900 R15: 0000000000000001 [ 90.916233][ T25] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 90.929331][ T25] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.938934][ T25] CR2: 00007f1e5f3de740 CR3: 0000000030b70000 CR4: 00000000001506f0 [ 90.949112][ T25] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.960438][ T25] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.970750][ T25] Call Trace: [ 90.978020][ T25] nf_unregister_net_hooks+0x117/0x160 [ 90.984996][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 90.991945][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 91.000611][ T25] cleanup_net+0x451/0xb10 [ 91.006500][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 91.016197][ T25] process_one_work+0x98d/0x1600 [ 91.024246][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 91.030813][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 91.040719][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 91.047126][ T25] worker_thread+0x64c/0x1120 [ 91.052116][ T25] ? process_one_work+0x1600/0x1600 [ 91.060705][ T25] kthread+0x3b1/0x4a0 [ 91.066708][ T25] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 91.077289][ T25] ret_from_fork+0x1f/0x30 [ 91.085057][ T25] Kernel panic - not syncing: panic_on_warn set ... [ 91.094513][ T25] CPU: 0 PID: 25 Comm: kworker/u4:1 Not tainted 5.12.0-syzkaller #0 [ 91.105717][ T25] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.117358][ T25] Workqueue: netns cleanup_net [ 91.125630][ T25] Call Trace: [ 91.130485][ T25] dump_stack+0x141/0x1d7 [ 91.135629][ T25] panic+0x306/0x73d [ 91.140423][ T25] ? __warn_printk+0xf3/0xf3 [ 91.145574][ T25] ? __warn.cold+0x1a/0x44 [ 91.150154][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 91.156628][ T25] __warn.cold+0x35/0x44 [ 91.160999][ T25] ? __nf_unregister_net_hook+0x1eb/0x610 [ 91.167106][ T25] report_bug+0x1bd/0x210 [ 91.171544][ T25] handle_bug+0x3c/0x60 [ 91.175897][ T25] exc_invalid_op+0x14/0x40 [ 91.180852][ T25] asm_exc_invalid_op+0x12/0x20 [ 91.186259][ T25] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 91.195612][ T25] 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 [ 91.218673][ T25] RSP: 0018:ffffc90000e17bc0 EFLAGS: 00010286 [ 91.225445][ T25] RAX: 0000000000000000 RBX: ffff88802af2ae00 RCX: 0000000000000000 [ 91.234595][ T25] RDX: ffff8880161ba2c0 RSI: ffffffff815bfe35 RDI: fffff520001c2f6a [ 91.244512][ T25] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 91.253596][ T25] R10: ffffffff815b9c6e R11: 0000000000000000 R12: ffff88802ffcef60 [ 91.264267][ T25] R13: 0000000000000000 R14: ffff888030bb2900 R15: 0000000000000001 [ 91.272617][ T25] ? wake_up_klogd.part.0+0x8e/0xd0 [ 91.279033][ T25] ? vprintk+0x95/0x260 [ 91.284023][ T25] nf_unregister_net_hooks+0x117/0x160 [ 91.290351][ T25] arpt_unregister_table_pre_exit+0x67/0x80 [ 91.298271][ T25] ? arptable_filter_net_exit+0x20/0x20 [ 91.306940][ T25] cleanup_net+0x451/0xb10 [ 91.312484][ T25] ? ops_free_list.part.0+0x3d0/0x3d0 [ 91.321053][ T25] process_one_work+0x98d/0x1600 [ 91.326790][ T25] ? pwq_dec_nr_in_flight+0x320/0x320 [ 91.333823][ T25] ? rwlock_bug.part.0+0x90/0x90 [ 91.340491][ T25] ? _raw_spin_lock_irq+0x41/0x50 [ 91.346725][ T25] worker_thread+0x64c/0x1120 [ 91.352222][ T25] ? process_one_work+0x1600/0x1600 [ 91.358709][ T25] kthread+0x3b1/0x4a0 [ 91.364403][ T25] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 91.372932][ T25] ret_from_fork+0x1f/0x30 [ 91.379958][ T25] Kernel Offset: disabled [ 91.386681][ T25] Rebooting in 86400 seconds..