DUID 00:04:ac:d3:e9:6f:d6:cf:30:00:cb:75:86:98:6a:d5:8e:9b forked to background, child pid 3174 [ 26.388590][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.399092][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.106' (ECDSA) to the list of known hosts. 2022/02/20 17:48:00 fuzzer started 2022/02/20 17:48:00 connecting to host at 10.128.0.169:33067 2022/02/20 17:48:00 checking machine... 2022/02/20 17:48:00 checking revisions... 2022/02/20 17:48:01 testing simple program... syzkaller login: [ 48.569630][ T3595] cgroup: Unknown subsys name 'net' [ 48.719193][ T3595] cgroup: Unknown subsys name 'rlimit' [ 49.895166][ T3599] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 49.903186][ T3599] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 49.910834][ T3599] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 49.919305][ T3599] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 49.926921][ T3599] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 49.934307][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 50.018143][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 50.059723][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.067591][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.075557][ T3597] device bridge_slave_0 entered promiscuous mode [ 50.084873][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.093113][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.100783][ T3597] device bridge_slave_1 entered promiscuous mode [ 50.120906][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 50.134669][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 50.156088][ T3597] team0: Port device team_slave_0 added [ 50.164818][ T3597] team0: Port device team_slave_1 added [ 50.182863][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 50.190068][ T3597] 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. [ 50.216499][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 50.229194][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 50.236206][ T3597] 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. [ 50.263000][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 50.286960][ T3597] [ 50.289388][ T3597] ============================= [ 50.294277][ T3597] WARNING: suspicious RCU usage [ 50.299298][ T3597] 5.17.0-rc4-syzkaller-01352-gb03e19465b97 #0 Not tainted [ 50.306460][ T3597] ----------------------------- [ 50.311303][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 50.319513][ T3597] [ 50.319513][ T3597] other info that might help us debug this: [ 50.319513][ T3597] [ 50.329786][ T3597] [ 50.329786][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 50.338029][ T3597] 2 locks held by syz-executor.0/3597: [ 50.343516][ T3597] #0: ffffffff8d32f868 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 50.353441][ T3597] #1: ffff88807748d5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 50.363603][ T3597] [ 50.363603][ T3597] stack backtrace: [ 50.369485][ T3597] CPU: 1 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01352-gb03e19465b97 #0 [ 50.380178][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.390309][ T3597] Call Trace: [ 50.393579][ T3597] [ 50.396495][ T3597] dump_stack_lvl+0xcd/0x134 [ 50.401080][ T3597] hsr_node_get_first+0x9b/0xb0 [ 50.405917][ T3597] hsr_create_self_node+0x22d/0x650 [ 50.411168][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 50.416061][ T3597] hsr_newlink+0x315/0x730 [ 50.420474][ T3597] ? hsr_dellink+0x130/0x130 [ 50.425054][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 50.430079][ T3597] ? hsr_dellink+0x130/0x130 [ 50.434660][ T3597] __rtnl_newlink+0x107c/0x1760 [ 50.439507][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 50.444272][ T3597] ? is_bpf_text_address+0x77/0x170 [ 50.449468][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 50.454320][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 50.459515][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.465575][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 50.471555][ T3597] ? is_bpf_text_address+0x99/0x170 [ 50.476747][ T3597] ? kernel_text_address+0x39/0x80 [ 50.481849][ T3597] ? __kernel_text_address+0x9/0x30 [ 50.487065][ T3597] ? unwind_get_return_address+0x51/0x90 [ 50.492713][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 50.497915][ T3597] ? arch_stack_walk+0x93/0xe0 [ 50.502703][ T3597] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 50.508164][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 50.513727][ T3597] rtnl_newlink+0x64/0xa0 [ 50.518049][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 50.523063][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 50.528091][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 50.533051][ T3597] netlink_rcv_skb+0x153/0x420 [ 50.537830][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 50.542581][ T3597] ? netlink_ack+0xa60/0xa60 [ 50.547183][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 50.552468][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 50.557762][ T3597] netlink_unicast+0x539/0x7e0 [ 50.562529][ T3597] ? netlink_attachskb+0x880/0x880 [ 50.567637][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.573885][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.580115][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 50.585130][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 50.590927][ T3597] ? __check_object_size+0x16e/0x310 [ 50.596220][ T3597] netlink_sendmsg+0x904/0xe00 [ 50.600978][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 50.605913][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 50.612155][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 50.617082][ T3597] sock_sendmsg+0xcf/0x120 [ 50.621504][ T3597] __sys_sendto+0x21c/0x320 [ 50.625994][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 50.631347][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 50.636555][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 50.642183][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 50.647204][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 50.651971][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 50.657157][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 50.663040][ T3597] do_syscall_64+0x35/0xb0 [ 50.667448][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.673328][ T3597] RIP: 0033:0x7f8934fd8e1c [ 50.677892][ T3597] Code: fa fa ff ff 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 20 fb ff ff 48 8b [ 50.697591][ T3597] RSP: 002b:00007ffec6948820 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 50.706022][ T3597] RAX: ffffffffffffffda RBX: 00007f8936071320 RCX: 00007f8934fd8e1c [ 50.714069][ T3597] RDX: 0000000000000048 RSI: 00007f8936071370 RDI: 0000000000000003 [ 50.722023][ T3597] RBP: 0000000000000000 R08: 00007ffec6948874 R09: 000000000000000c [ 50.729995][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 50.737961][ T3597] R13: 00007f8936071370 R14: 0000000000000003 R15: 0000000000000000 [ 50.745939][ T3597] [ 50.756724][ T3597] device hsr_slave_0 entered promiscuous mode [ 50.764195][ T3597] device hsr_slave_1 entered promiscuous mode [ 50.841389][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 50.851727][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 50.861325][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.870651][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.892380][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.899695][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.907542][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.914634][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.958983][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.972970][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.983031][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.991176][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.000901][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.015288][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.025392][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 51.034184][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.043104][ T31] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.050166][ T31] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.061093][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 51.070388][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.079019][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.086158][ T3607] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.106727][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 51.115747][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 51.124614][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 51.134765][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.143549][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 51.152721][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.160987][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 51.169794][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 51.178516][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.191404][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 51.200602][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.211351][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.229007][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 51.236623][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 51.249489][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 51.352741][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 51.361691][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 51.381133][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 51.390187][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 51.399216][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 51.407448][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 51.417738][ T3597] device veth0_vlan entered promiscuous mode [ 51.429085][ T3597] device veth1_vlan entered promiscuous mode [ 51.448524][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 51.456822][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 51.465238][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 51.473983][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 51.485336][ T3597] device veth0_macvtap entered promiscuous mode [ 51.495569][ T3597] device veth1_macvtap entered promiscuous mode [ 51.510345][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 51.518463][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 51.527933][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 51.536215][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 51.545769][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 51.558336][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 51.567434][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 51.575944][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 51.587366][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.596306][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.605209][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.613971][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.674620][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.687263][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.700216][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 51.713661][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.721604][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.730462][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/20 17:48:04 building call list... [ 51.937862][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 54.140263][ T3586] can: request_module (can-proto-0) failed. [ 54.164123][ T3586] can: request_module (can-proto-0) failed. [ 54.185701][ T3586] can: request_module (can-proto-0) failed. executing program [ 54.541779][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0