DUID 00:04:bf:e1:a4:b2:b1:2b:3d:59:87:c9:47:74:aa:d6:f6:6a forked to background, child pid 3176 [ 31.729875][ T3177] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.744073][ T3177] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.37' (ECDSA) to the list of known hosts. 2022/02/10 01:38:38 fuzzer started 2022/02/10 01:38:38 connecting to host at 10.128.0.169:35775 2022/02/10 01:38:38 checking machine... 2022/02/10 01:38:38 checking revisions... 2022/02/10 01:38:38 testing simple program... syzkaller login: [ 47.148295][ T3595] cgroup: Unknown subsys name 'net' [ 47.278550][ T3595] cgroup: Unknown subsys name 'rlimit' [ 48.514697][ T3602] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 48.523444][ T3602] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 48.531427][ T3602] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 48.539679][ T3602] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 48.548182][ T3602] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 48.555701][ T3600] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 48.646550][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 48.690000][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.698050][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.706290][ T3597] device bridge_slave_0 entered promiscuous mode [ 48.716346][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.724696][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.733192][ T3597] device bridge_slave_1 entered promiscuous mode [ 48.754583][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 48.765712][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 48.787594][ T3597] team0: Port device team_slave_0 added [ 48.795361][ T3597] team0: Port device team_slave_1 added [ 48.814388][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 48.821564][ 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. [ 48.847763][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 48.860341][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 48.867460][ 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. [ 48.893591][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 48.916754][ T3597] [ 48.919222][ T3597] ============================= [ 48.924199][ T3597] WARNING: suspicious RCU usage [ 48.929486][ T3597] 5.17.0-rc2-syzkaller-00741-g5cad527d5ffa #0 Not tainted [ 48.936666][ T3597] ----------------------------- [ 48.941583][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 48.949917][ T3597] [ 48.949917][ T3597] other info that might help us debug this: [ 48.949917][ T3597] [ 48.960273][ T3597] [ 48.960273][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 48.968381][ T3597] 2 locks held by syz-executor.0/3597: [ 48.973887][ T3597] #0: ffffffff8d32c1e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 48.983509][ T3597] #1: ffff88807b3fd5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 48.994051][ T3597] [ 48.994051][ T3597] stack backtrace: [ 48.999963][ T3597] CPU: 1 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00741-g5cad527d5ffa #0 [ 49.010443][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.020835][ T3597] Call Trace: [ 49.024198][ T3597] [ 49.027256][ T3597] dump_stack_lvl+0xcd/0x134 [ 49.031954][ T3597] hsr_node_get_first+0x9b/0xb0 [ 49.036897][ T3597] hsr_create_self_node+0x22d/0x650 [ 49.042230][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 49.047146][ T3597] hsr_newlink+0x315/0x730 [ 49.051695][ T3597] ? hsr_dellink+0x130/0x130 [ 49.056496][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 49.061605][ T3597] ? hsr_dellink+0x130/0x130 [ 49.066294][ T3597] __rtnl_newlink+0x107c/0x1760 [ 49.071163][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 49.075850][ T3597] ? is_bpf_text_address+0x77/0x170 [ 49.081056][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 49.085914][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 49.091134][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.097204][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 49.102955][ T3597] ? is_bpf_text_address+0x99/0x170 [ 49.108163][ T3597] ? kernel_text_address+0x39/0x80 [ 49.113554][ T3597] ? __kernel_text_address+0x9/0x30 [ 49.118844][ T3597] ? unwind_get_return_address+0x51/0x90 [ 49.124474][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 49.129771][ T3597] ? arch_stack_walk+0x93/0xe0 [ 49.134765][ T3597] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 49.140231][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 49.145796][ T3597] rtnl_newlink+0x64/0xa0 [ 49.150138][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 49.155165][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 49.160198][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 49.164810][ T3597] netlink_rcv_skb+0x153/0x420 [ 49.169675][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 49.174267][ T3597] ? netlink_ack+0xa60/0xa60 [ 49.178937][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 49.184340][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 49.189632][ T3597] netlink_unicast+0x539/0x7e0 [ 49.194398][ T3597] ? netlink_attachskb+0x880/0x880 [ 49.199500][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 49.205918][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 49.212204][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 49.217245][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 49.222968][ T3597] ? __check_object_size+0x16e/0x310 [ 49.228254][ T3597] netlink_sendmsg+0x904/0xe00 [ 49.233033][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 49.237970][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.244206][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 49.249134][ T3597] sock_sendmsg+0xcf/0x120 [ 49.253553][ T3597] __sys_sendto+0x21c/0x320 [ 49.258053][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 49.263420][ T3597] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.270023][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 49.275606][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 49.280451][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 49.285325][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 49.290273][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 49.295764][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 49.301757][ T3597] do_syscall_64+0x35/0xb0 [ 49.306170][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.312075][ T3597] RIP: 0033:0x7f896e4ffe1c [ 49.317281][ 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 [ 49.337058][ T3597] RSP: 002b:00007ffe6dc0ebe0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 49.345492][ T3597] RAX: ffffffffffffffda RBX: 00007f896f598320 RCX: 00007f896e4ffe1c [ 49.353468][ T3597] RDX: 0000000000000048 RSI: 00007f896f598370 RDI: 0000000000000003 [ 49.361439][ T3597] RBP: 0000000000000000 R08: 00007ffe6dc0ec34 R09: 000000000000000c [ 49.369754][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 49.377807][ T3597] R13: 00007f896f598370 R14: 0000000000000003 R15: 0000000000000000 [ 49.385827][ T3597] [ 49.395425][ T3597] device hsr_slave_0 entered promiscuous mode [ 49.403625][ T3597] device hsr_slave_1 entered promiscuous mode [ 49.487409][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 49.498995][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 49.508920][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 49.518657][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 49.539896][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.547474][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.555730][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.563004][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.609016][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 49.622193][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 49.634758][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.644791][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.653523][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 49.668277][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 49.682675][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 49.692608][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 49.702192][ T140] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.709622][ T140] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.733255][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 49.742858][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 49.752018][ T3609] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.759277][ T3609] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.767903][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 49.777482][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 49.802117][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 49.811843][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.820754][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 49.830213][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.839230][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 49.847707][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 49.855996][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 49.864769][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 49.874104][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 49.885082][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 49.904311][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready executing program [ 49.912550][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 49.924785][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 50.055202][ T1791] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 50.065114][ T1791] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 50.078422][ T3597] device veth0_vlan entered promiscuous mode [ 50.087974][ T1791] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 50.097518][ T1791] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 50.109097][ T3597] device veth1_vlan entered promiscuous mode [ 50.116881][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 50.125815][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 50.133764][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 50.154373][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 50.163533][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 50.172664][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 50.183213][ T3597] device veth0_macvtap entered promiscuous mode [ 50.194250][ T3597] device veth1_macvtap entered promiscuous mode [ 50.209006][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.217517][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 50.226538][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 50.235372][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 50.244451][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 50.255388][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 50.264940][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 50.274308][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 50.285691][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.295499][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.305079][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.314146][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.377686][ T54] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.394417][ T54] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.404564][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 50.414077][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.423313][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.434802][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/10 01:38:41 building call list... [ 50.582569][ T140] Bluetooth: hci0: command 0x0409 tx timeout [ 50.703466][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 52.635470][ T3591] can: request_module (can-proto-0) failed. [ 52.657629][ T3591] can: request_module (can-proto-0) failed. [ 52.677938][ T3591] can: request_module (can-proto-0) failed. executing program [ 53.261632][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0