DUID 00:04:1b:66:36:25:cc:bb:2d:eb:42:73:ce:96:f3:b7:d0:c0 forked to background, child pid 3173 [ 30.154969][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.169684][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.35' (ECDSA) to the list of known hosts. 2022/02/15 18:29:36 fuzzer started 2022/02/15 18:29:36 connecting to host at 10.128.0.169:33595 2022/02/15 18:29:36 checking machine... 2022/02/15 18:29:36 checking revisions... 2022/02/15 18:29:36 testing simple program... syzkaller login: [ 50.976650][ T3594] cgroup: Unknown subsys name 'net' [ 51.107655][ T3594] cgroup: Unknown subsys name 'rlimit' [ 52.321364][ T3601] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.329803][ T3601] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.337853][ T3601] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.345798][ T3601] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.353772][ T3601] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.361055][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.449889][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 52.494415][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.502048][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.510265][ T3597] device bridge_slave_0 entered promiscuous mode [ 52.519441][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.526683][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.534560][ T3597] device bridge_slave_1 entered promiscuous mode [ 52.556191][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.567108][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.591155][ T3597] team0: Port device team_slave_0 added [ 52.598385][ T3597] team0: Port device team_slave_1 added [ 52.616103][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.623365][ 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. [ 52.649335][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.662454][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.669413][ 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. [ 52.695399][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.724233][ T3597] [ 52.726679][ T3597] ============================= [ 52.731557][ T3597] WARNING: suspicious RCU usage [ 52.736486][ T3597] 5.17.0-rc2-syzkaller-00961-g8cbf062a250e #0 Not tainted [ 52.743637][ T3597] ----------------------------- [ 52.748477][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 52.756661][ T3597] [ 52.756661][ T3597] other info that might help us debug this: [ 52.756661][ T3597] [ 52.766918][ T3597] [ 52.766918][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 52.775093][ T3597] 2 locks held by syz-executor.0/3597: [ 52.780571][ T3597] #0: ffffffff8d32cae8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.789984][ T3597] #1: ffff88801defd5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.800123][ T3597] [ 52.800123][ T3597] stack backtrace: [ 52.806033][ T3597] CPU: 0 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00961-g8cbf062a250e #0 [ 52.816468][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.826519][ T3597] Call Trace: [ 52.829814][ T3597] [ 52.832743][ T3597] dump_stack_lvl+0xcd/0x134 [ 52.837340][ T3597] hsr_node_get_first+0x9b/0xb0 [ 52.842208][ T3597] hsr_create_self_node+0x22d/0x650 [ 52.847421][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 52.852300][ T3597] hsr_newlink+0x315/0x730 [ 52.856720][ T3597] ? hsr_dellink+0x130/0x130 [ 52.861309][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 52.866335][ T3597] ? hsr_dellink+0x130/0x130 [ 52.870925][ T3597] __rtnl_newlink+0x107c/0x1760 [ 52.875788][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 52.880478][ T3597] ? is_bpf_text_address+0x77/0x170 [ 52.885684][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 52.890548][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 52.895748][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.901848][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.907580][ T3597] ? is_bpf_text_address+0x99/0x170 [ 52.912901][ T3597] ? kernel_text_address+0x39/0x80 [ 52.918029][ T3597] ? __kernel_text_address+0x9/0x30 [ 52.923235][ T3597] ? unwind_get_return_address+0x51/0x90 [ 52.929482][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 52.934698][ T3597] ? arch_stack_walk+0x93/0xe0 [ 52.939526][ T3597] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 52.945100][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.950657][ T3597] rtnl_newlink+0x64/0xa0 [ 52.954993][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 52.960045][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 52.964989][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 52.969510][ T3597] netlink_rcv_skb+0x153/0x420 [ 52.974280][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 52.978791][ T3597] ? netlink_ack+0xa60/0xa60 [ 52.983384][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.989024][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.994321][ T3597] netlink_unicast+0x539/0x7e0 [ 52.999100][ T3597] ? netlink_attachskb+0x880/0x880 [ 53.004211][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.010476][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.016723][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 53.021752][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.027492][ T3597] ? __check_object_size+0x16e/0x310 [ 53.033222][ T3597] netlink_sendmsg+0x904/0xe00 [ 53.037994][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 53.043112][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.049359][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 53.054297][ T3597] sock_sendmsg+0xcf/0x120 [ 53.058717][ T3597] __sys_sendto+0x21c/0x320 [ 53.063222][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.068599][ T3597] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 53.074605][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 53.080069][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.084943][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.089812][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 53.094594][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 53.099810][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.105711][ T3597] do_syscall_64+0x35/0xb0 [ 53.110159][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.116065][ T3597] RIP: 0033:0x7f297ce0fe1c [ 53.120479][ 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 [ 53.140172][ T3597] RSP: 002b:00007ffcfca75300 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.148588][ T3597] RAX: ffffffffffffffda RBX: 00007f297dea8320 RCX: 00007f297ce0fe1c [ 53.156557][ T3597] RDX: 0000000000000048 RSI: 00007f297dea8370 RDI: 0000000000000003 [ 53.164538][ T3597] RBP: 0000000000000000 R08: 00007ffcfca75354 R09: 000000000000000c [ 53.172509][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.180570][ T3597] R13: 00007f297dea8370 R14: 0000000000000003 R15: 0000000000000000 [ 53.188562][ T3597] [ 53.196995][ T3597] device hsr_slave_0 entered promiscuous mode [ 53.204385][ T3597] device hsr_slave_1 entered promiscuous mode [ 53.285744][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.296144][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.304858][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.315942][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.337075][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.344270][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.352428][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.359490][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.404961][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.418025][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.428799][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.437893][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.446505][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.462066][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.472343][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.481078][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.489444][ T1132] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.496538][ T1132] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.511949][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.521488][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.529807][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.537210][ T3607] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.559755][ T3597] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 53.571545][ T3597] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 53.584783][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.593437][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.602776][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.611903][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.620509][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.629055][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.637797][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.646102][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.655246][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.664376][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.675188][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.683006][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.701959][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.712305][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 53.719753][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 53.823966][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.833377][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.852108][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 53.860776][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.871765][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.879774][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.889788][ T3597] device veth0_vlan entered promiscuous mode [ 53.902128][ T3597] device veth1_vlan entered promiscuous mode [ 53.920053][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.928157][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.936441][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.945134][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.956989][ T3597] device veth0_macvtap entered promiscuous mode [ 53.967784][ T3597] device veth1_macvtap entered promiscuous mode [ 53.982656][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.990097][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.999182][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.007349][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.016841][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.029504][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.037311][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.046224][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.057902][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.066872][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.075985][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.085707][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.144886][ T990] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.154918][ T990] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.166153][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.185207][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.193855][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.203383][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/15 18:29:39 building call list... [ 54.502342][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 56.461871][ T3588] can: request_module (can-proto-0) failed. [ 56.483795][ T3588] can: request_module (can-proto-0) failed. [ 56.505065][ T3588] can: request_module (can-proto-0) failed. executing program [ 56.741557][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 56.992444][ T3597] syz-executor.0 (3597) used greatest stack depth: 22856 bytes left