Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.60' (ECDSA) to the list of known hosts. 2021/05/06 16:30:47 fuzzer started 2021/05/06 16:30:47 connecting to host at 10.128.0.169:36413 2021/05/06 16:30:47 checking machine... 2021/05/06 16:30:47 checking revisions... 2021/05/06 16:30:47 testing simple program... syzkaller login: [ 77.742210][ T8417] chnl_net:caif_netlink_parms(): no params data found [ 77.801623][ T8417] bridge0: port 1(bridge_slave_0) entered blocking state [ 77.810294][ T8417] bridge0: port 1(bridge_slave_0) entered disabled state [ 77.821102][ T8417] device bridge_slave_0 entered promiscuous mode [ 77.834089][ T8417] bridge0: port 2(bridge_slave_1) entered blocking state [ 77.843268][ T8417] bridge0: port 2(bridge_slave_1) entered disabled state [ 77.854187][ T8417] device bridge_slave_1 entered promiscuous mode [ 77.885411][ T8417] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 77.898267][ T8417] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 77.924606][ T8417] team0: Port device team_slave_0 added [ 77.935226][ T8417] team0: Port device team_slave_1 added [ 77.955265][ T8417] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 77.963477][ T8417] 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. [ 77.992544][ T8417] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.007243][ T8417] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.015265][ T8417] 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. [ 78.044013][ T8417] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.073085][ T8417] device hsr_slave_0 entered promiscuous mode [ 78.081506][ T8417] device hsr_slave_1 entered promiscuous mode [ 78.190389][ T8417] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.203490][ T8417] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.215053][ T8417] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.226278][ T8417] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.256705][ T8417] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.265059][ T8417] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.274116][ T8417] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.281730][ T8417] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.328601][ T8417] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.344664][ T8144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.358348][ T8144] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.368963][ T8144] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.378271][ T8144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 78.393531][ T8417] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.407371][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.416496][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.424812][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.438874][ T8638] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 78.449398][ T8638] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.457355][ T8638] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.478308][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 78.488345][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 78.504047][ T8638] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 78.518848][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 78.535045][ T8417] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 78.548864][ T8417] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 78.559879][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 78.584905][ T8417] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 78.594120][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 78.602687][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 78.624413][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 78.647270][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 78.658492][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 78.667561][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 78.678572][ T8417] device veth0_vlan entered promiscuous mode [ 78.692861][ T8417] device veth1_vlan entered promiscuous mode [ 78.713074][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 78.722699][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 78.739559][ T8417] device veth0_macvtap entered promiscuous mode [ 78.748960][ T3146] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 78.760367][ T3146] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 78.772933][ T8417] device veth1_macvtap entered promiscuous mode [ 78.785190][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 78.795168][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 78.810752][ T8417] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 78.820249][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 78.831398][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 78.847939][ T8417] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 78.856198][ T8638] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 78.866929][ T8638] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 78.879534][ T8417] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.890306][ T8417] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.899627][ T8417] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 78.909933][ T8417] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 79.015111][ T96] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.051171][ T96] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.068499][ T142] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.084205][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 79.085647][ T142] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.105465][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/05/06 16:30:50 building call list... [ 81.634878][ T8408] can: request_module (can-proto-0) failed. [ 81.649742][ T8408] can: request_module (can-proto-0) failed. [ 81.665989][ T8408] can: request_module (can-proto-0) failed. executing program [ 82.077793][ T96] ------------[ cut here ]------------ [ 82.089774][ T96] hook not found, pf 3 num 0 [ 82.090418][ T96] WARNING: CPU: 0 PID: 96 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x1eb/0x610 [ 82.132044][ T96] Modules linked in: [ 82.136832][ T96] CPU: 0 PID: 96 Comm: kworker/u4:2 Not tainted 5.12.0-syzkaller #0 [ 82.163019][ T96] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.181029][ T96] Workqueue: netns cleanup_net [ 82.190585][ T96] RIP: 0010:__nf_unregister_net_hook+0x1eb/0x610 [ 82.197734][ T96] 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 [ 82.220964][ T96] RSP: 0018:ffffc9000119fbc0 EFLAGS: 00010286 [ 82.227922][ T96] RAX: 0000000000000000 RBX: ff