DUID 00:04:1b:66:36:25:cc:bb:2d:eb:42:73:ce:96:f3:b7:d0:c0 forked to background, child pid 3176 [ 27.274777][ T3177] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.293366][ T3177] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.109' (ECDSA) to the list of known hosts. 2022/02/28 13:19:23 fuzzer started 2022/02/28 13:19:23 connecting to host at 10.128.0.169:34281 2022/02/28 13:19:23 checking machine... 2022/02/28 13:19:23 checking revisions... 2022/02/28 13:19:23 testing simple program... syzkaller login: [ 48.495086][ T3605] cgroup: Unknown subsys name 'net' [ 48.629319][ T3605] cgroup: Unknown subsys name 'rlimit' [ 49.894198][ T3608] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 49.902495][ T3608] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 49.910291][ T3608] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 49.918696][ T3608] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 49.926661][ T3608] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 49.934359][ T3608] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 50.021084][ T3607] chnl_net:caif_netlink_parms(): no params data found [ 50.063732][ T3607] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.071388][ T3607] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.080077][ T3607] device bridge_slave_0 entered promiscuous mode [ 50.089139][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.096364][ T3607] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.104491][ T3607] device bridge_slave_1 entered promiscuous mode [ 50.125734][ T3607] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 50.136759][ T3607] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 50.160084][ T3607] team0: Port device team_slave_0 added [ 50.167440][ T3607] team0: Port device team_slave_1 added [ 50.186028][ T3607] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 50.193312][ T3607] 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. [ 50.219641][ T3607] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 50.232476][ T3607] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 50.239492][ T3607] 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. [ 50.265733][ T3607] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 50.288812][ T3607] [ 50.291243][ T3607] ============================= [ 50.296204][ T3607] WARNING: suspicious RCU usage [ 50.301078][ T3607] 5.17.0-rc4-syzkaller-01362-gdda7596c109f #0 Not tainted [ 50.308376][ T3607] ----------------------------- [ 50.313259][ T3607] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 50.321409][ T3607] [ 50.321409][ T3607] other info that might help us debug this: [ 50.321409][ T3607] [ 50.331679][ T3607] [ 50.331679][ T3607] rcu_scheduler_active = 2, debug_locks = 1 [ 50.339775][ T3607] 2 locks held by syz-executor.0/3607: [ 50.345346][ T3607] #0: ffffffff8d3308e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 50.354845][ T3607] #1: ffff88801ec495f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 50.365040][ T3607] [ 50.365040][ T3607] stack backtrace: [ 50.371098][ T3607] CPU: 0 PID: 3607 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01362-gdda7596c109f #0 [ 50.381720][ T3607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.391778][ T3607] Call Trace: [ 50.395051][ T3607] [ 50.397991][ T3607] dump_stack_lvl+0xcd/0x134 [ 50.402679][ T3607] hsr_node_get_first+0x9b/0xb0 [ 50.407543][ T3607] hsr_create_self_node+0x22d/0x650 [ 50.412746][ T3607] hsr_dev_finalize+0x2c1/0x7d0 [ 50.417603][ T3607] hsr_newlink+0x315/0x730 [ 50.422021][ T3607] ? hsr_dellink+0x130/0x130 [ 50.426627][ T3607] ? rtnl_create_link+0x7e8/0xc00 [ 50.431750][ T3607] ? hsr_dellink+0x130/0x130 [ 50.436360][ T3607] __rtnl_newlink+0x107c/0x1760 [ 50.441562][ T3607] ? rtnl_setlink+0x3c0/0x3c0 [ 50.446235][ T3607] ? is_bpf_text_address+0x77/0x170 [ 50.451422][ T3607] ? lock_downgrade+0x6e0/0x6e0 [ 50.456261][ T3607] ? unwind_next_frame+0xee1/0x1ce0 [ 50.461445][ T3607] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.467582][ T3607] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 50.473305][ T3607] ? is_bpf_text_address+0x99/0x170 [ 50.478501][ T3607] ? kernel_text_address+0x39/0x80 [ 50.483599][ T3607] ? __kernel_text_address+0x9/0x30 [ 50.488785][ T3607] ? unwind_get_return_address+0x51/0x90 [ 50.494400][ T3607] ? create_prof_cpu_mask+0x20/0x20 [ 50.499583][ T3607] ? arch_stack_walk+0x93/0xe0 [ 50.504378][ T3607] ? rcu_read_lock_sched_held+0x3a/0x70 [ 50.509925][ T3607] rtnl_newlink+0x64/0xa0 [ 50.514240][ T3607] ? __rtnl_newlink+0x1760/0x1760 [ 50.519530][ T3607] rtnetlink_rcv_msg+0x413/0xb80 [ 50.524801][ T3607] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 50.529557][ T3607] netlink_rcv_skb+0x153/0x420 [ 50.534319][ T3607] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 50.539080][ T3607] ? netlink_ack+0xa60/0xa60 [ 50.543664][ T3607] ? netlink_deliver_tap+0x1a2/0xc40 [ 50.548949][ T3607] ? netlink_deliver_tap+0x1b1/0xc40 [ 50.554256][ T3607] netlink_unicast+0x539/0x7e0 [ 50.559279][ T3607] ? netlink_attachskb+0x880/0x880 [ 50.564400][ T3607] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.570648][ T3607] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.576992][ T3607] ? __phys_addr_symbol+0x2c/0x70 [ 50.582001][ T3607] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 50.587790][ T3607] ? __check_object_size+0x16e/0x310 [ 50.593070][ T3607] netlink_sendmsg+0x904/0xe00 [ 50.597834][ T3607] ? netlink_unicast+0x7e0/0x7e0 [ 50.602783][ T3607] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 50.609035][ T3607] ? netlink_unicast+0x7e0/0x7e0 [ 50.613968][ T3607] sock_sendmsg+0xcf/0x120 [ 50.618376][ T3607] __sys_sendto+0x21c/0x320 [ 50.622863][ T3607] ? __ia32_sys_getpeername+0xb0/0xb0 [ 50.628215][ T3607] ? lockdep_hardirqs_on+0x79/0x100 [ 50.633499][ T3607] ? __context_tracking_exit+0xb8/0xe0 [ 50.638961][ T3607] ? lock_downgrade+0x6e0/0x6e0 [ 50.643831][ T3607] __x64_sys_sendto+0xdd/0x1b0 [ 50.648582][ T3607] ? lockdep_hardirqs_on+0x79/0x100 [ 50.653770][ T3607] ? syscall_enter_from_user_mode+0x21/0x70 [ 50.659747][ T3607] do_syscall_64+0x35/0xb0 [ 50.664180][ T3607] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.670090][ T3607] RIP: 0033:0x7f624f493e0c [ 50.674559][ T3607] 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 [ 50.694240][ T3607] RSP: 002b:00007ffdd46ac1c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 50.702724][ T3607] RAX: ffffffffffffffda RBX: 00007f625052c320 RCX: 00007f624f493e0c [ 50.710677][ T3607] RDX: 0000000000000048 RSI: 00007f625052c370 RDI: 0000000000000003 [ 50.718805][ T3607] RBP: 0000000000000000 R08: 00007ffdd46ac214 R09: 000000000000000c [ 50.726760][ T3607] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 50.734798][ T3607] R13: 00007f625052c370 R14: 0000000000000003 R15: 0000000000000000 [ 50.742763][ T3607] [ 50.752722][ T3607] device hsr_slave_0 entered promiscuous mode [ 50.759501][ T3607] device hsr_slave_1 entered promiscuous mode [ 50.837230][ T3607] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 50.847736][ T3607] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 50.856738][ T3607] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.866605][ T3607] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.887504][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.894843][ T3607] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.902601][ T3607] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.909965][ T3607] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.955231][ T3607] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.968339][ T1133] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.978040][ T1133] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.986653][ T1133] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.995596][ T1133] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.010090][ T3607] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.020833][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 51.030214][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.039812][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.047058][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.066669][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 51.077939][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.087075][ T3616] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.094164][ T3616] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.101951][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 51.111196][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 51.120077][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 51.128831][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.137387][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 51.146085][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.166767][ T1133] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.174643][ T1133] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 51.182933][ T1133] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 51.191890][ T1133] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 51.200301][ T1133] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.209582][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.231041][ T3607] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.239548][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 51.247872][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 51.363164][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 51.372332][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 51.385955][ T3607] device veth0_vlan entered promiscuous mode [ 51.393251][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 51.402003][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 51.415099][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 51.423368][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 51.434062][ T3607] device veth1_vlan entered promiscuous mode [ 51.452278][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 51.461022][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 51.469434][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 51.478208][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 51.488421][ T3607] device veth0_macvtap entered promiscuous mode [ 51.499734][ T3607] device veth1_macvtap entered promiscuous mode [ 51.515434][ T3607] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 51.522846][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 51.531748][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 51.540315][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 51.548985][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 51.559780][ T3607] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 51.568480][ T1133] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 51.577455][ T1133] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 51.588734][ T3607] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.598013][ T3607] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.606841][ T3607] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.616382][ T3607] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.675429][ T45] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.684122][ T45] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.701165][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 51.716761][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.725456][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.736664][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/28 13:19:27 building call list... [ 51.954448][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 54.056104][ T3604] can: request_module (can-proto-0) failed. [ 54.078230][ T3604] can: request_module (can-proto-0) failed. [ 54.099767][ T3604] can: request_module (can-proto-0) failed. executing program