DUID 00:04:bf:e1:a4:b2:b1:2b:3d:59:87:c9:47:74:aa:d6:f6:6a forked to background, child pid 3173 [ 26.702944][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.715367][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.126' (ECDSA) to the list of known hosts. 2022/02/19 05:27:54 fuzzer started 2022/02/19 05:27:54 connecting to host at 10.128.0.169:32809 2022/02/19 05:27:54 checking machine... 2022/02/19 05:27:54 checking revisions... 2022/02/19 05:27:54 testing simple program... syzkaller login: [ 44.371513][ T3595] cgroup: Unknown subsys name 'net' [ 44.475553][ T3595] cgroup: Unknown subsys name 'rlimit' [ 45.695186][ T3598] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 45.703940][ T3598] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 45.711858][ T3600] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 45.720577][ T3600] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 45.728306][ T3598] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 45.735569][ T3598] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 45.822888][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 45.865198][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.872882][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.880895][ T3597] device bridge_slave_0 entered promiscuous mode [ 45.889719][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.897084][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.904738][ T3597] device bridge_slave_1 entered promiscuous mode [ 45.925811][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 45.937063][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 45.959921][ T3597] team0: Port device team_slave_0 added [ 45.967667][ T3597] team0: Port device team_slave_1 added [ 45.984836][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 45.991930][ 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. [ 46.017997][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 46.031445][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 46.038408][ 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. [ 46.064402][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 46.087852][ T3597] [ 46.090284][ T3597] ============================= [ 46.095112][ T3597] WARNING: suspicious RCU usage [ 46.099984][ T3597] 5.17.0-rc4-syzkaller-01354-g6e2e59eaee47 #0 Not tainted [ 46.107196][ T3597] ----------------------------- [ 46.112124][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 46.120300][ T3597] [ 46.120300][ T3597] other info that might help us debug this: [ 46.120300][ T3597] [ 46.130543][ T3597] [ 46.130543][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 46.138646][ T3597] 2 locks held by syz-executor.0/3597: [ 46.144118][ T3597] #0: ffffffff8d32f868 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 46.153624][ T3597] #1: ffff88806f5295f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 46.163767][ T3597] [ 46.163767][ T3597] stack backtrace: [ 46.169795][ T3597] CPU: 0 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01354-g6e2e59eaee47 #0 [ 46.180561][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.190709][ T3597] Call Trace: [ 46.193979][ T3597] [ 46.196904][ T3597] dump_stack_lvl+0xcd/0x134 [ 46.201508][ T3597] hsr_node_get_first+0x9b/0xb0 [ 46.206348][ T3597] hsr_create_self_node+0x22d/0x650 [ 46.211549][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 46.216398][ T3597] hsr_newlink+0x315/0x730 [ 46.220992][ T3597] ? hsr_dellink+0x130/0x130 [ 46.225833][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 46.230854][ T3597] ? hsr_dellink+0x130/0x130 [ 46.235439][ T3597] __rtnl_newlink+0x107c/0x1760 [ 46.240284][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 46.244960][ T3597] ? is_bpf_text_address+0x77/0x170 [ 46.250143][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 46.254985][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 46.260168][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 46.266221][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 46.271934][ T3597] ? is_bpf_text_address+0x99/0x170 [ 46.277131][ T3597] ? kernel_text_address+0x39/0x80 [ 46.282313][ T3597] ? __kernel_text_address+0x9/0x30 [ 46.287515][ T3597] ? unwind_get_return_address+0x51/0x90 [ 46.293157][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 46.298360][ T3597] ? arch_stack_walk+0x93/0xe0 [ 46.303170][ T3597] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 46.308641][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 46.314198][ T3597] rtnl_newlink+0x64/0xa0 [ 46.318627][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 46.323653][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 46.328774][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 46.333548][ T3597] netlink_rcv_skb+0x153/0x420 [ 46.338311][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 46.343077][ T3597] ? netlink_ack+0xa60/0xa60 [ 46.347669][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 46.352957][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 46.358247][ T3597] netlink_unicast+0x539/0x7e0 [ 46.363012][ T3597] ? netlink_attachskb+0x880/0x880 [ 46.368120][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 46.374361][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 46.380602][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 46.385624][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 46.391342][ T3597] ? __check_object_size+0x16e/0x310 [ 46.396633][ T3597] netlink_sendmsg+0x904/0xe00 [ 46.401398][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 46.406361][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 46.412605][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 46.417546][ T3597] sock_sendmsg+0xcf/0x120 [ 46.422052][ T3597] __sys_sendto+0x21c/0x320 [ 46.426551][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 46.431916][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 46.437147][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 46.442602][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 46.447471][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 46.452238][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 46.457445][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 46.463343][ T3597] do_syscall_64+0x35/0xb0 [ 46.467767][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 46.473659][ T3597] RIP: 0033:0x7f7696646e1c [ 46.478084][ 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 [ 46.497692][ T3597] RSP: 002b:00007ffd14f2e1d0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 46.506364][ T3597] RAX: ffffffffffffffda RBX: 00007f76976df320 RCX: 00007f7696646e1c [ 46.514328][ T3597] RDX: 0000000000000048 RSI: 00007f76976df370 RDI: 0000000000000003 [ 46.522290][ T3597] RBP: 0000000000000000 R08: 00007ffd14f2e224 R09: 000000000000000c [ 46.530251][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 46.538212][ T3597] R13: 00007f76976df370 R14: 0000000000000003 R15: 0000000000000000 [ 46.546209][ T3597] [ 46.553138][ T3597] device hsr_slave_0 entered promiscuous mode [ 46.560586][ T3597] device hsr_slave_1 entered promiscuous mode [ 46.638425][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 46.649648][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 46.658674][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 46.667736][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 46.688213][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.695439][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.703115][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.710229][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.754722][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.767322][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 46.778344][ T39] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.788767][ T39] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.797734][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 46.810508][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 46.821627][ T3259] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 46.831459][ T3259] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 46.840001][ T3259] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.847130][ T3259] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.858143][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 46.868157][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 46.876777][ T3608] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.883947][ T3608] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.906163][ T3259] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 46.914841][ T3259] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 46.923777][ T3259] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 46.933168][ T3259] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 46.942884][ T3259] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 46.957127][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 46.966088][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 46.975375][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 46.983926][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 46.993272][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 47.001663][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 47.013112][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 47.028913][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 47.037096][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 47.049671][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 47.159558][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 47.169289][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 47.181435][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 47.191065][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 47.200421][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 47.209110][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 47.218168][ T3597] device veth0_vlan entered promiscuous mode [ 47.228939][ T3597] device veth1_vlan entered promiscuous mode [ 47.247784][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 47.256254][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 47.264558][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 47.273488][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 47.285021][ T3597] device veth0_macvtap entered promiscuous mode [ 47.294824][ T3597] device veth1_macvtap entered promiscuous mode [ 47.310701][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 47.318239][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 47.327441][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 47.335345][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 47.344566][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 47.356047][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 47.363643][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 47.372535][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 47.383444][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.392458][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.401474][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.410604][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.472771][ T1026] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 47.484017][ T1026] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 47.501378][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 47.513320][ T1026] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 47.521741][ T1026] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 47.530409][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/19 05:27:58 building call list... [ 47.784718][ T1026] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 49.900352][ T3619] can: request_module (can-proto-0) failed. [ 49.923984][ T3619] can: request_module (can-proto-0) failed. [ 49.944692][ T3619] can: request_module (can-proto-0) failed. [ 50.037006][ T1026] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 50.248602][ T3597] syz-executor.0 (3597) used greatest stack depth: 22832 bytes left