DUID 00:04:08:6f:95:b8:7a:da:47:d5:ae:28:d8:4d:e4:58:2e:6d forked to background, child pid 3170 [ 27.528845][ T3171] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.539264][ T3171] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.23' (ECDSA) to the list of known hosts. 2022/02/11 09:22:47 fuzzer started 2022/02/11 09:22:47 connecting to host at 10.128.0.169:44845 2022/02/11 09:22:47 checking machine... 2022/02/11 09:22:47 checking revisions... 2022/02/11 09:22:47 testing simple program... syzkaller login: [ 50.226227][ T3599] cgroup: Unknown subsys name 'net' [ 50.333054][ T3599] cgroup: Unknown subsys name 'rlimit' [ 51.584712][ T3602] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.592903][ T3602] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.600583][ T3602] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.609193][ T3602] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.617044][ T3605] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.624397][ T3605] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.710208][ T3601] chnl_net:caif_netlink_parms(): no params data found [ 51.751556][ T3601] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.759213][ T3601] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.767165][ T3601] device bridge_slave_0 entered promiscuous mode [ 51.776223][ T3601] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.783329][ T3601] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.791231][ T3601] device bridge_slave_1 entered promiscuous mode [ 51.812397][ T3601] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.823487][ T3601] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.845748][ T3601] team0: Port device team_slave_0 added [ 51.853328][ T3601] team0: Port device team_slave_1 added [ 51.870435][ T3601] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.877627][ T3601] 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. [ 51.903652][ T3601] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.917022][ T3601] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.923975][ T3601] 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. [ 51.950001][ T3601] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.973596][ T3601] [ 51.976052][ T3601] ============================= [ 51.980878][ T3601] WARNING: suspicious RCU usage [ 51.985754][ T3601] 5.17.0-rc3-next-20220211-syzkaller #0 Not tainted [ 51.992338][ T3601] ----------------------------- [ 51.997209][ T3601] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 52.005382][ T3601] [ 52.005382][ T3601] other info that might help us debug this: [ 52.005382][ T3601] [ 52.015658][ T3601] [ 52.015658][ T3601] rcu_scheduler_active = 2, debug_locks = 1 [ 52.023726][ T3601] 2 locks held by syz-executor.0/3601: [ 52.029209][ T3601] #0: ffffffff8d3325a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.039041][ T3601] #1: ffff88807f1655f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.049208][ T3601] [ 52.049208][ T3601] stack backtrace: [ 52.055132][ T3601] CPU: 1 PID: 3601 Comm: syz-executor.0 Not tainted 5.17.0-rc3-next-20220211-syzkaller #0 [ 52.065020][ T3601] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.075063][ T3601] Call Trace: [ 52.078331][ T3601] [ 52.081250][ T3601] dump_stack_lvl+0xcd/0x134 [ 52.085845][ T3601] hsr_node_get_first+0x9b/0xb0 [ 52.090695][ T3601] hsr_create_self_node+0x22d/0x650 [ 52.095897][ T3601] hsr_dev_finalize+0x2c1/0x7d0 [ 52.100770][ T3601] hsr_newlink+0x315/0x730 [ 52.105189][ T3601] ? hsr_dellink+0x130/0x130 [ 52.109781][ T3601] ? rtnl_create_link+0x7e8/0xc00 [ 52.114812][ T3601] ? hsr_dellink+0x130/0x130 [ 52.119411][ T3601] __rtnl_newlink+0x107c/0x1760 [ 52.124272][ T3601] ? rtnl_setlink+0x3c0/0x3c0 [ 52.128962][ T3601] ? is_bpf_text_address+0x77/0x170 [ 52.134164][ T3601] ? lock_downgrade+0x6e0/0x6e0 [ 52.139016][ T3601] ? unwind_next_frame+0xee1/0x1ce0 [ 52.144210][ T3601] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.150280][ T3601] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.155999][ T3601] ? is_bpf_text_address+0x99/0x170 [ 52.161200][ T3601] ? kernel_text_address+0x39/0x80 [ 52.166407][ T3601] ? __kernel_text_address+0x9/0x30 [ 52.171603][ T3601] ? unwind_get_return_address+0x51/0x90 [ 52.177234][ T3601] ? create_prof_cpu_mask+0x20/0x20 [ 52.182433][ T3601] ? arch_stack_walk+0x93/0xe0 [ 52.187243][ T3601] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 52.192707][ T3601] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.198260][ T3601] rtnl_newlink+0x64/0xa0 [ 52.202585][ T3601] ? __rtnl_newlink+0x1760/0x1760 [ 52.207610][ T3601] rtnetlink_rcv_msg+0x413/0xb80 [ 52.212564][ T3601] ? rtnl_newlink+0xa0/0xa0 [ 52.217075][ T3601] netlink_rcv_skb+0x153/0x420 [ 52.221835][ T3601] ? rtnl_newlink+0xa0/0xa0 [ 52.226356][ T3601] ? netlink_ack+0xa80/0xa80 [ 52.231025][ T3601] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.236332][ T3601] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.241614][ T3601] netlink_unicast+0x539/0x7e0 [ 52.246382][ T3601] ? netlink_attachskb+0x880/0x880 [ 52.251483][ T3601] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.257720][ T3601] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.263951][ T3601] ? __phys_addr_symbol+0x2c/0x70 [ 52.268975][ T3601] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.274690][ T3601] ? __check_object_size+0x16c/0x4f0 [ 52.279978][ T3601] netlink_sendmsg+0x904/0xe00 [ 52.284742][ T3601] ? netlink_unicast+0x7e0/0x7e0 [ 52.289680][ T3601] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.295914][ T3601] ? netlink_unicast+0x7e0/0x7e0 [ 52.300848][ T3601] sock_sendmsg+0xcf/0x120 [ 52.305262][ T3601] __sys_sendto+0x21c/0x320 [ 52.309761][ T3601] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.315129][ T3601] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 52.321126][ T3601] ? __context_tracking_exit+0xb8/0xe0 [ 52.326584][ T3601] ? lock_downgrade+0x6e0/0x6e0 [ 52.331438][ T3601] ? lock_downgrade+0x6e0/0x6e0 [ 52.336302][ T3601] __x64_sys_sendto+0xdd/0x1b0 [ 52.341068][ T3601] ? lockdep_hardirqs_on+0x79/0x100 [ 52.346263][ T3601] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.352154][ T3601] do_syscall_64+0x35/0xb0 [ 52.356562][ T3601] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.362461][ T3601] RIP: 0033:0x7f5a01655e1c [ 52.366868][ T3601] 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 [ 52.386463][ T3601] RSP: 002b:00007ffd9d7dfca0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.394864][ T3601] RAX: ffffffffffffffda RBX: 00007f5a026ee320 RCX: 00007f5a01655e1c [ 52.402825][ T3601] RDX: 0000000000000048 RSI: 00007f5a026ee370 RDI: 0000000000000003 [ 52.410787][ T3601] RBP: 0000000000000000 R08: 00007ffd9d7dfcf4 R09: 000000000000000c [ 52.418753][ T3601] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.426850][ T3601] R13: 00007f5a026ee370 R14: 0000000000000003 R15: 0000000000000000 [ 52.434825][ T3601] [ 52.444726][ T3601] device hsr_slave_0 entered promiscuous mode [ 52.452375][ T3601] device hsr_slave_1 entered promiscuous mode [ 52.569629][ T3601] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.581588][ T3601] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.591882][ T3601] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.602422][ T3601] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.630789][ T3601] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.637973][ T3601] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.645850][ T3601] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.652940][ T3601] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.698071][ T3601] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.710499][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.720368][ T141] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.729392][ T141] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.738456][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.751308][ T3601] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.761638][ T3612] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.770948][ T3612] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.780638][ T3612] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.787881][ T3612] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.807129][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.815954][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.824295][ T141] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.831493][ T141] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.839123][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.847770][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.860866][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.869677][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.879079][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.893708][ T3601] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 52.904496][ T3601] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.917528][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.926878][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.935646][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.944022][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.952789][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.961237][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.969647][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.989923][ T3601] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.998454][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready executing program [ 53.006105][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 53.126864][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.136506][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.153426][ T3601] device veth0_vlan entered promiscuous mode [ 53.161364][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 53.169738][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.178857][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.187803][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.200718][ T3601] device veth1_vlan entered promiscuous mode [ 53.218716][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.227095][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.236137][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.244729][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.255221][ T3601] device veth0_macvtap entered promiscuous mode [ 53.263803][ T3601] device veth1_macvtap entered promiscuous mode [ 53.281013][ T3601] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.288818][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.297205][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 53.305884][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.314337][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.327796][ T3601] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.335455][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.344011][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.357981][ T3601] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.367084][ T3601] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.376627][ T3601] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.386427][ T3601] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.445921][ T8] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.454005][ T8] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.463897][ T3612] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.485826][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.493797][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.503685][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/11 09:22:51 building call list... [ 53.657552][ T14] Bluetooth: hci0: command 0x0409 tx timeout [ 53.749230][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.786338][ T3598] can: request_module (can-proto-0) failed. [ 55.808735][ T3598] can: request_module (can-proto-0) failed. [ 55.829143][ T3598] can: request_module (can-proto-0) failed. executing program [ 55.966601][ T3601] syz-executor.0 (3601) used greatest stack depth: 22880 bytes left [ 56.004679][ T11] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0