DUID 00:04:44:5a:cc:c9:49:7a:03:7b:0e:36:9f:1a:c7:8d:92:7d forked to background, child pid 3175 [ 30.033266][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.043485][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.193' (ECDSA) to the list of known hosts. 2022/02/18 15:47:52 fuzzer started 2022/02/18 15:47:52 connecting to host at 10.128.0.169:44633 2022/02/18 15:47:52 checking machine... 2022/02/18 15:47:52 checking revisions... 2022/02/18 15:47:52 testing simple program... syzkaller login: [ 51.089175][ T3603] cgroup: Unknown subsys name 'net' [ 51.219583][ T3603] cgroup: Unknown subsys name 'rlimit' [ 52.445409][ T3606] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.454224][ T3606] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.462224][ T3606] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.470561][ T3606] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.478275][ T3606] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.485910][ T3606] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.586744][ T3605] chnl_net:caif_netlink_parms(): no params data found [ 52.635815][ T3605] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.644032][ T3605] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.652181][ T3605] device bridge_slave_0 entered promiscuous mode [ 52.663069][ T3605] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.670304][ T3605] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.678729][ T3605] device bridge_slave_1 entered promiscuous mode [ 52.700907][ T3605] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.712094][ T3605] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.736715][ T3605] team0: Port device team_slave_0 added [ 52.744773][ T3605] team0: Port device team_slave_1 added [ 52.763071][ T3605] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.770208][ T3605] 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. [ 52.796463][ T3605] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.809199][ T3605] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.816486][ T3605] 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. [ 52.843032][ T3605] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.866756][ T3605] [ 52.869215][ T3605] ============================= [ 52.874379][ T3605] WARNING: suspicious RCU usage [ 52.879267][ T3605] 5.17.0-rc4-syzkaller-01349-g86213f80da1b #0 Not tainted [ 52.886645][ T3605] ----------------------------- [ 52.891708][ T3605] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 52.900244][ T3605] [ 52.900244][ T3605] other info that might help us debug this: [ 52.900244][ T3605] [ 52.910517][ T3605] [ 52.910517][ T3605] rcu_scheduler_active = 2, debug_locks = 1 [ 52.918721][ T3605] 2 locks held by syz-executor.0/3605: [ 52.924408][ T3605] #0: ffffffff8d32f868 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.934426][ T3605] #1: ffff88807545d5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.944608][ T3605] [ 52.944608][ T3605] stack backtrace: [ 52.950765][ T3605] CPU: 0 PID: 3605 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01349-g86213f80da1b #0 [ 52.961203][ T3605] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.971593][ T3605] Call Trace: [ 52.975042][ T3605] [ 52.977980][ T3605] dump_stack_lvl+0xcd/0x134 [ 52.982570][ T3605] hsr_node_get_first+0x9b/0xb0 [ 52.988217][ T3605] hsr_create_self_node+0x22d/0x650 [ 52.993670][ T3605] hsr_dev_finalize+0x2c1/0x7d0 [ 52.998662][ T3605] hsr_newlink+0x315/0x730 [ 53.003181][ T3605] ? hsr_dellink+0x130/0x130 [ 53.007861][ T3605] ? rtnl_create_link+0x7e8/0xc00 [ 53.012929][ T3605] ? hsr_dellink+0x130/0x130 [ 53.017556][ T3605] __rtnl_newlink+0x107c/0x1760 [ 53.022427][ T3605] ? rtnl_setlink+0x3c0/0x3c0 [ 53.027150][ T3605] ? is_bpf_text_address+0x77/0x170 [ 53.032355][ T3605] ? lock_downgrade+0x6e0/0x6e0 [ 53.037461][ T3605] ? unwind_next_frame+0xee1/0x1ce0 [ 53.042789][ T3605] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.048882][ T3605] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.054616][ T3605] ? is_bpf_text_address+0x99/0x170 [ 53.059869][ T3605] ? kernel_text_address+0x39/0x80 [ 53.064991][ T3605] ? __kernel_text_address+0x9/0x30 [ 53.070285][ T3605] ? unwind_get_return_address+0x51/0x90 [ 53.075930][ T3605] ? create_prof_cpu_mask+0x20/0x20 [ 53.081146][ T3605] ? arch_stack_walk+0x93/0xe0 [ 53.085998][ T3605] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 53.091485][ T3605] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.097123][ T3605] rtnl_newlink+0x64/0xa0 [ 53.101621][ T3605] ? __rtnl_newlink+0x1760/0x1760 [ 53.106761][ T3605] rtnetlink_rcv_msg+0x413/0xb80 [ 53.111968][ T3605] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 53.116769][ T3605] netlink_rcv_skb+0x153/0x420 [ 53.121549][ T3605] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 53.126724][ T3605] ? netlink_ack+0xa60/0xa60 [ 53.131411][ T3605] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.137226][ T3605] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.142604][ T3605] netlink_unicast+0x539/0x7e0 [ 53.147388][ T3605] ? netlink_attachskb+0x880/0x880 [ 53.152589][ T3605] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.158829][ T3605] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.165066][ T3605] ? __phys_addr_symbol+0x2c/0x70 [ 53.170193][ T3605] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.176101][ T3605] ? __check_object_size+0x16e/0x310 [ 53.181392][ T3605] netlink_sendmsg+0x904/0xe00 [ 53.186340][ T3605] ? netlink_unicast+0x7e0/0x7e0 [ 53.191422][ T3605] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.198211][ T3605] ? netlink_unicast+0x7e0/0x7e0 [ 53.203194][ T3605] sock_sendmsg+0xcf/0x120 [ 53.207809][ T3605] __sys_sendto+0x21c/0x320 [ 53.212370][ T3605] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.217784][ T3605] ? lockdep_hardirqs_on+0x79/0x100 [ 53.223090][ T3605] ? __context_tracking_exit+0xb8/0xe0 [ 53.228575][ T3605] ? lock_downgrade+0x6e0/0x6e0 [ 53.233442][ T3605] __x64_sys_sendto+0xdd/0x1b0 [ 53.238198][ T3605] ? lockdep_hardirqs_on+0x79/0x100 [ 53.243602][ T3605] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.249663][ T3605] do_syscall_64+0x35/0xb0 [ 53.254074][ T3605] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.260081][ T3605] RIP: 0033:0x7fda454cbe1c [ 53.264777][ T3605] 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 [ 53.284640][ T3605] RSP: 002b:00007ffcc5a00130 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.293312][ T3605] RAX: ffffffffffffffda RBX: 00007fda46564320 RCX: 00007fda454cbe1c [ 53.301294][ T3605] RDX: 0000000000000048 RSI: 00007fda46564370 RDI: 0000000000000003 [ 53.309258][ T3605] RBP: 0000000000000000 R08: 00007ffcc5a00184 R09: 000000000000000c [ 53.317220][ T3605] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.325183][ T3605] R13: 00007fda46564370 R14: 0000000000000003 R15: 0000000000000000 [ 53.333187][ T3605] [ 53.342575][ T3605] device hsr_slave_0 entered promiscuous mode [ 53.350066][ T3605] device hsr_slave_1 entered promiscuous mode [ 53.431610][ T3605] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.443169][ T3605] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.453419][ T3605] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.462659][ T3605] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.484192][ T3605] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.491357][ T3605] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.499711][ T3605] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.506830][ T3605] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.554559][ T3605] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.567387][ T1134] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.577781][ T1134] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.587654][ T1134] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.597796][ T1134] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.611841][ T3605] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.623383][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.632281][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.641104][ T21] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.648352][ T21] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.660437][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.670075][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.678963][ T3616] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.686135][ T3616] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.702663][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.711507][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.720985][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.729997][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.739386][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.748176][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.757655][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.768891][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.778072][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.791500][ T3605] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 53.803715][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.813581][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.821993][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.839634][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 53.848213][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 53.859554][ T3605] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.973142][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.981923][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.992243][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.000957][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.010578][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.018521][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.028170][ T3605] device veth0_vlan entered promiscuous mode [ 54.039203][ T3605] device veth1_vlan entered promiscuous mode [ 54.057163][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.065346][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.073983][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.083381][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.097372][ T3605] device veth0_macvtap entered promiscuous mode [ 54.106785][ T3605] device veth1_macvtap entered promiscuous mode [ 54.129033][ T3605] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.139263][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.147781][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.156179][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.165243][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.177519][ T3605] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.185837][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.194774][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.206039][ T3605] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.216032][ T3605] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.225207][ T3605] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.234163][ T3605] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.294376][ T90] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.302357][ T90] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.315412][ T1134] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.335344][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.344651][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.354823][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/18 15:47:56 building call list... [ 54.503691][ T3615] Bluetooth: hci0: command 0x0409 tx timeout [ 56.775476][ T3602] can: request_module (can-proto-0) failed. [ 56.797752][ T3602] can: request_module (can-proto-0) failed. [ 56.818902][ T3602] can: request_module (can-proto-0) failed. executing program [ 57.159997][ T90] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0