forked to background, child pid 3172 no interfaces have a carrier [ 29.387422][ T3173] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.398027][ T3173] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.125' (ECDSA) to the list of known hosts. 2022/02/08 05:51:53 fuzzer started 2022/02/08 05:51:53 connecting to host at 10.128.0.169:38365 2022/02/08 05:51:53 checking machine... 2022/02/08 05:51:53 checking revisions... 2022/02/08 05:51:53 testing simple program... syzkaller login: [ 51.962055][ T3593] cgroup: Unknown subsys name 'net' [ 52.097666][ T3593] cgroup: Unknown subsys name 'rlimit' [ 53.347790][ T3598] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 53.356322][ T3598] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 53.364336][ T3598] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 53.372354][ T3598] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 53.379889][ T3598] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 53.387679][ T3598] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 53.477939][ T3595] chnl_net:caif_netlink_parms(): no params data found [ 53.520715][ T3595] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.528596][ T3595] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.537265][ T3595] device bridge_slave_0 entered promiscuous mode [ 53.546328][ T3595] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.554365][ T3595] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.563136][ T3595] device bridge_slave_1 entered promiscuous mode [ 53.586314][ T3595] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.597602][ T3595] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.620204][ T3595] team0: Port device team_slave_0 added [ 53.628087][ T3595] team0: Port device team_slave_1 added [ 53.645521][ T3595] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.652622][ T3595] 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. [ 53.679218][ T3595] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.694226][ T3595] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.701420][ T3595] 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. [ 53.730312][ T3595] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.754611][ T3595] [ 53.757050][ T3595] ============================= [ 53.761940][ T3595] WARNING: suspicious RCU usage [ 53.766794][ T3595] 5.17.0-rc3-next-20220208-syzkaller #0 Not tainted [ 53.773485][ T3595] ----------------------------- [ 53.778533][ T3595] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 53.786745][ T3595] [ 53.786745][ T3595] other info that might help us debug this: [ 53.786745][ T3595] [ 53.797359][ T3595] [ 53.797359][ T3595] rcu_scheduler_active = 2, debug_locks = 1 [ 53.805482][ T3595] 2 locks held by syz-executor.0/3595: [ 53.810983][ T3595] #0: ffffffff8d3357e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 53.820581][ T3595] #1: ffff88801e6555f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 53.830953][ T3595] [ 53.830953][ T3595] stack backtrace: [ 53.836865][ T3595] CPU: 0 PID: 3595 Comm: syz-executor.0 Not tainted 5.17.0-rc3-next-20220208-syzkaller #0 [ 53.846842][ T3595] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.857238][ T3595] Call Trace: [ 53.860683][ T3595] [ 53.863708][ T3595] dump_stack_lvl+0xcd/0x134 [ 53.868311][ T3595] hsr_node_get_first+0x9b/0xb0 [ 53.873168][ T3595] hsr_create_self_node+0x22d/0x650 [ 53.878734][ T3595] hsr_dev_finalize+0x2c1/0x7d0 [ 53.883872][ T3595] hsr_newlink+0x315/0x730 [ 53.888308][ T3595] ? hsr_dellink+0x130/0x130 [ 53.892897][ T3595] ? rtnl_create_link+0x7e8/0xc00 [ 53.897925][ T3595] ? hsr_dellink+0x130/0x130 [ 53.902512][ T3595] __rtnl_newlink+0x107c/0x1760 [ 53.907468][ T3595] ? rtnl_setlink+0x3c0/0x3c0 [ 53.912279][ T3595] ? is_bpf_text_address+0x77/0x170 [ 53.917685][ T3595] ? lock_downgrade+0x6e0/0x6e0 [ 53.923201][ T3595] ? unwind_next_frame+0xee1/0x1ce0 [ 53.928415][ T3595] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.934579][ T3595] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.940317][ T3595] ? is_bpf_text_address+0x99/0x170 [ 53.945528][ T3595] ? kernel_text_address+0x39/0x80 [ 53.950649][ T3595] ? __kernel_text_address+0x9/0x30 [ 53.955865][ T3595] ? unwind_get_return_address+0x51/0x90 [ 53.961506][ T3595] ? create_prof_cpu_mask+0x20/0x20 [ 53.966716][ T3595] ? arch_stack_walk+0x93/0xe0 [ 53.971529][ T3595] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 53.976999][ T3595] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.982553][ T3595] rtnl_newlink+0x64/0xa0 [ 53.986904][ T3595] ? __rtnl_newlink+0x1760/0x1760 [ 53.991951][ T3595] rtnetlink_rcv_msg+0x413/0xb80 [ 53.996899][ T3595] ? rtnl_newlink+0xa0/0xa0 [ 54.001414][ T3595] netlink_rcv_skb+0x153/0x420 [ 54.006180][ T3595] ? rtnl_newlink+0xa0/0xa0 [ 54.010872][ T3595] ? netlink_ack+0xa80/0xa80 [ 54.015463][ T3595] ? netlink_deliver_tap+0x1a2/0xc40 [ 54.020750][ T3595] ? netlink_deliver_tap+0x1b1/0xc40 [ 54.026337][ T3595] netlink_unicast+0x539/0x7e0 [ 54.031105][ T3595] ? netlink_attachskb+0x880/0x880 [ 54.036218][ T3595] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 54.042470][ T3595] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 54.048721][ T3595] ? __phys_addr_symbol+0x2c/0x70 [ 54.053750][ T3595] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 54.059475][ T3595] ? __check_object_size+0x16c/0x4f0 [ 54.064764][ T3595] netlink_sendmsg+0x904/0xe00 [ 54.069535][ T3595] ? netlink_unicast+0x7e0/0x7e0 [ 54.074477][ T3595] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 54.080731][ T3595] ? netlink_unicast+0x7e0/0x7e0 [ 54.085757][ T3595] sock_sendmsg+0xcf/0x120 [ 54.090179][ T3595] __sys_sendto+0x21c/0x320 [ 54.094706][ T3595] ? __ia32_sys_getpeername+0xb0/0xb0 [ 54.100084][ T3595] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 54.106088][ T3595] ? __context_tracking_exit+0xb8/0xe0 [ 54.111556][ T3595] ? lock_downgrade+0x6e0/0x6e0 [ 54.116425][ T3595] ? lock_downgrade+0x6e0/0x6e0 [ 54.121290][ T3595] __x64_sys_sendto+0xdd/0x1b0 [ 54.126058][ T3595] ? lockdep_hardirqs_on+0x79/0x100 [ 54.131268][ T3595] ? syscall_enter_from_user_mode+0x21/0x70 [ 54.137254][ T3595] do_syscall_64+0x35/0xb0 [ 54.141688][ T3595] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 54.147579][ T3595] RIP: 0033:0x7fd8ff7d2e1c [ 54.152091][ T3595] 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 [ 54.172134][ T3595] RSP: 002b:00007ffe681424d0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 54.180548][ T3595] RAX: ffffffffffffffda RBX: 00007fd90086b320 RCX: 00007fd8ff7d2e1c [ 54.188684][ T3595] RDX: 0000000000000048 RSI: 00007fd90086b370 RDI: 0000000000000003 [ 54.196906][ T3595] RBP: 0000000000000000 R08: 00007ffe68142524 R09: 000000000000000c [ 54.204873][ T3595] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 54.214355][ T3595] R13: 00007fd90086b370 R14: 0000000000000003 R15: 0000000000000000 [ 54.222634][ T3595] [ 54.231665][ T3595] device hsr_slave_0 entered promiscuous mode [ 54.239345][ T3595] device hsr_slave_1 entered promiscuous mode [ 54.319259][ T3595] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 54.330213][ T3595] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 54.339284][ T3595] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 54.348640][ T3595] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 54.369504][ T3595] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.376999][ T3595] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.385192][ T3595] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.392300][ T3595] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.489922][ T3595] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.507334][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 54.519015][ T3605] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.530433][ T3605] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.539774][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 54.581565][ T3595] 8021q: adding VLAN 0 to HW filter on device team0 [ 54.592677][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 54.602368][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 54.612716][ T1130] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.619840][ T1130] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.641586][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 54.651006][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.660193][ T3605] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.667528][ T3605] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.675430][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 54.684259][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 54.693528][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 54.702354][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.712451][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.728416][ T3595] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network executing program [ 54.739844][ T3595] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 54.753864][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.762663][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.771381][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 54.782386][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.791516][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.800213][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.809347][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.832921][ T3595] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.841737][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.849370][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 54.962824][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.972498][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.987547][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.996890][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 55.006297][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 55.015065][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 55.024726][ T3595] device veth0_vlan entered promiscuous mode [ 55.036261][ T3595] device veth1_vlan entered promiscuous mode [ 55.054786][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 55.063685][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 55.072469][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 55.081761][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 55.093359][ T3595] device veth0_macvtap entered promiscuous mode [ 55.103320][ T3595] device veth1_macvtap entered promiscuous mode [ 55.118047][ T3595] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 55.126399][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 55.135201][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 55.143717][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 55.153312][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 55.165760][ T3595] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 55.173379][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 55.182965][ T1130] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 55.194737][ T3595] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.203696][ T3595] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.213276][ T3595] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.222351][ T3595] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 55.282912][ T12] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.291408][ T12] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.303038][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 55.321349][ T12] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.330155][ T12] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.339431][ T3605] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/08 05:51:57 building call list... [ 55.431350][ T1130] Bluetooth: hci0: command 0x0409 tx timeout [ 55.622948][ T1238] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.692563][ T3586] can: request_module (can-proto-0) failed. [ 57.714590][ T3586] can: request_module (can-proto-0) failed. [ 57.735839][ T3586] can: request_module (can-proto-0) failed. executing program [ 57.880036][ T1238] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0