DUID 00:04:63:3c:db:c8:83:d4:2a:b1:e5:3f:fc:31:79:55:3b:bc forked to background, child pid 3170 [ 29.409944][ T3171] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.421316][ T3171] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.14' (ECDSA) to the list of known hosts. 2022/02/11 18:14:27 fuzzer started 2022/02/11 18:14:27 connecting to host at 10.128.0.169:35233 2022/02/11 18:14:27 checking machine... 2022/02/11 18:14:27 checking revisions... 2022/02/11 18:14:27 testing simple program... syzkaller login: [ 50.981790][ T3599] cgroup: Unknown subsys name 'net' [ 51.118501][ T3599] cgroup: Unknown subsys name 'rlimit' [ 52.412463][ T3605] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.420883][ T3605] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.428860][ T3605] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.436892][ T3605] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.444847][ T3605] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.452331][ T3605] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.539299][ T3601] chnl_net:caif_netlink_parms(): no params data found [ 52.580874][ T3601] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.588712][ T3601] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.596826][ T3601] device bridge_slave_0 entered promiscuous mode [ 52.606106][ T3601] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.613560][ T3601] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.621395][ T3601] device bridge_slave_1 entered promiscuous mode [ 52.642453][ T3601] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.654019][ T3601] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.676709][ T3601] team0: Port device team_slave_0 added [ 52.684102][ T3601] team0: Port device team_slave_1 added [ 52.700502][ T3601] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.707508][ 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. [ 52.733870][ T3601] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.746625][ T3601] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.754099][ 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. [ 52.780185][ T3601] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.804571][ T3601] [ 52.807012][ T3601] ============================= [ 52.811913][ T3601] WARNING: suspicious RCU usage [ 52.816761][ T3601] 5.17.0-rc3-next-20220211-syzkaller #0 Not tainted [ 52.823695][ T3601] ----------------------------- [ 52.828559][ T3601] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 52.836927][ T3601] [ 52.836927][ T3601] other info that might help us debug this: [ 52.836927][ T3601] [ 52.847271][ T3601] [ 52.847271][ T3601] rcu_scheduler_active = 2, debug_locks = 1 [ 52.855554][ T3601] 2 locks held by syz-executor.0/3601: [ 52.861035][ T3601] #0: ffffffff8d3325a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.870641][ T3601] #1: ffff88801dc6d5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.880816][ T3601] [ 52.880816][ T3601] stack backtrace: [ 52.886826][ T3601] CPU: 0 PID: 3601 Comm: syz-executor.0 Not tainted 5.17.0-rc3-next-20220211-syzkaller #0 [ 52.896823][ T3601] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.906967][ T3601] Call Trace: [ 52.910239][ T3601] [ 52.913166][ T3601] dump_stack_lvl+0xcd/0x134 [ 52.917761][ T3601] hsr_node_get_first+0x9b/0xb0 [ 52.922612][ T3601] hsr_create_self_node+0x22d/0x650 [ 52.927818][ T3601] hsr_dev_finalize+0x2c1/0x7d0 [ 52.932708][ T3601] hsr_newlink+0x315/0x730 [ 52.937319][ T3601] ? hsr_dellink+0x130/0x130 [ 52.942001][ T3601] ? rtnl_create_link+0x7e8/0xc00 [ 52.947638][ T3601] ? hsr_dellink+0x130/0x130 [ 52.952235][ T3601] __rtnl_newlink+0x107c/0x1760 [ 52.957094][ T3601] ? rtnl_setlink+0x3c0/0x3c0 [ 52.961841][ T3601] ? is_bpf_text_address+0x77/0x170 [ 52.967131][ T3601] ? lock_downgrade+0x6e0/0x6e0 [ 52.972021][ T3601] ? unwind_next_frame+0xee1/0x1ce0 [ 52.977215][ T3601] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.983285][ T3601] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.989000][ T3601] ? is_bpf_text_address+0x99/0x170 [ 52.994204][ T3601] ? kernel_text_address+0x39/0x80 [ 52.999400][ T3601] ? __kernel_text_address+0x9/0x30 [ 53.004596][ T3601] ? unwind_get_return_address+0x51/0x90 [ 53.010227][ T3601] ? create_prof_cpu_mask+0x20/0x20 [ 53.015522][ T3601] ? arch_stack_walk+0x93/0xe0 [ 53.020348][ T3601] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 53.025812][ T3601] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.031364][ T3601] rtnl_newlink+0x64/0xa0 [ 53.035694][ T3601] ? __rtnl_newlink+0x1760/0x1760 [ 53.040716][ T3601] rtnetlink_rcv_msg+0x413/0xb80 [ 53.046431][ T3601] ? rtnl_newlink+0xa0/0xa0 [ 53.050939][ T3601] netlink_rcv_skb+0x153/0x420 [ 53.055963][ T3601] ? rtnl_newlink+0xa0/0xa0 [ 53.060732][ T3601] ? netlink_ack+0xa80/0xa80 [ 53.065606][ T3601] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.070980][ T3601] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.076289][ T3601] netlink_unicast+0x539/0x7e0 [ 53.081054][ T3601] ? netlink_attachskb+0x880/0x880 [ 53.086335][ T3601] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.092573][ T3601] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.098894][ T3601] ? __phys_addr_symbol+0x2c/0x70 [ 53.103921][ T3601] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.109633][ T3601] ? __check_object_size+0x16c/0x4f0 [ 53.114929][ T3601] netlink_sendmsg+0x904/0xe00 [ 53.119709][ T3601] ? netlink_unicast+0x7e0/0x7e0 [ 53.124654][ T3601] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.130891][ T3601] ? netlink_unicast+0x7e0/0x7e0 [ 53.135828][ T3601] sock_sendmsg+0xcf/0x120 [ 53.140247][ T3601] __sys_sendto+0x21c/0x320 [ 53.144841][ T3601] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.150216][ T3601] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 53.156216][ T3601] ? __context_tracking_exit+0xb8/0xe0 [ 53.161687][ T3601] ? lock_downgrade+0x6e0/0x6e0 [ 53.166543][ T3601] ? lock_downgrade+0x6e0/0x6e0 [ 53.171407][ T3601] __x64_sys_sendto+0xdd/0x1b0 [ 53.176172][ T3601] ? lockdep_hardirqs_on+0x79/0x100 [ 53.181369][ T3601] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.187274][ T3601] do_syscall_64+0x35/0xb0 [ 53.191782][ T3601] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.197690][ T3601] RIP: 0033:0x7fbb6330fe1c [ 53.202184][ 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 [ 53.221965][ T3601] RSP: 002b:00007ffc5b277d90 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.230375][ T3601] RAX: ffffffffffffffda RBX: 00007fbb643a8320 RCX: 00007fbb6330fe1c [ 53.238427][ T3601] RDX: 0000000000000048 RSI: 00007fbb643a8370 RDI: 0000000000000003 [ 53.249472][ T3601] RBP: 0000000000000000 R08: 00007ffc5b277de4 R09: 000000000000000c [ 53.257522][ T3601] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.265486][ T3601] R13: 00007fbb643a8370 R14: 0000000000000003 R15: 0000000000000000 [ 53.273465][ T3601] [ 53.283041][ T3601] device hsr_slave_0 entered promiscuous mode [ 53.294833][ T3601] device hsr_slave_1 entered promiscuous mode [ 53.413725][ T3601] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.426981][ T3601] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.437520][ T3601] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.455383][ T3601] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.478819][ T3601] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.486198][ T3601] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.494035][ T3601] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.501129][ T3601] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.547943][ T3601] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.559964][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.571004][ T141] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.579816][ T141] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.589707][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.652427][ T3601] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.664298][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.673156][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.683010][ T3611] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.690066][ T3611] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.704049][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.713153][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.722343][ T3613] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.729434][ T3613] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.737485][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready executing program [ 53.750793][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.764100][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.774922][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.785375][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.793447][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.804516][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.817439][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.825868][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.838123][ T3601] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 53.852095][ T3601] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.860148][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.868904][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.891171][ T3601] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.900457][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 53.908207][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 54.042747][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.052171][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.061215][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.070735][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.080634][ T3601] device veth0_vlan entered promiscuous mode [ 54.088707][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.096683][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.108885][ T3601] device veth1_vlan entered promiscuous mode [ 54.128497][ T3601] device veth0_macvtap entered promiscuous mode [ 54.136626][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.145036][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.153129][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.162441][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.171311][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.183019][ T3601] device veth1_macvtap entered promiscuous mode [ 54.198153][ T3601] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.206488][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.215186][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.224362][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.236608][ T3601] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.244750][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.253682][ T1139] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.265609][ T3601] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.274888][ T3601] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.284025][ T3601] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.293148][ T3601] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.357445][ T91] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.367183][ T91] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.378656][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.391025][ T1034] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.399377][ T1034] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.409866][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/11 18:14:31 building call list... [ 54.482858][ T3611] Bluetooth: hci0: command 0x0409 tx timeout [ 54.688283][ T1034] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 56.715574][ T3593] can: request_module (can-proto-0) failed. [ 56.739554][ T3593] can: request_module (can-proto-0) failed. executing program [ 56.760682][ T3593] can: request_module (can-proto-0) failed. [ 57.215332][ T3601] syz-executor.0 (3601) used greatest stack depth: 22528 bytes left [ 57.286624][ T1034] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0