DUID 00:04:00:dd:10:da:7f:85:b5:90:fb:fd:97:ac:66:d6:08:36 forked to background, child pid 3173 [ 27.429807][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.440664][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.19' (ECDSA) to the list of known hosts. 2022/02/12 03:56:13 fuzzer started 2022/02/12 03:56:13 connecting to host at 10.128.0.169:36813 2022/02/12 03:56:13 checking machine... 2022/02/12 03:56:13 checking revisions... 2022/02/12 03:56:13 testing simple program... syzkaller login: [ 45.174166][ T3595] cgroup: Unknown subsys name 'net' [ 45.318733][ T3595] cgroup: Unknown subsys name 'rlimit' [ 46.503546][ T3601] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 46.512240][ T3601] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 46.519890][ T3601] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 46.528333][ T3601] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 46.535947][ T3601] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 46.543601][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 46.632516][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 46.677619][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.685651][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.694082][ T3597] device bridge_slave_0 entered promiscuous mode [ 46.704024][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.711546][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.719964][ T3597] device bridge_slave_1 entered promiscuous mode [ 46.743927][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 46.755115][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 46.780986][ T3597] team0: Port device team_slave_0 added [ 46.789771][ T3597] team0: Port device team_slave_1 added [ 46.807682][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 46.814936][ 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. [ 46.842063][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 46.856601][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 46.863954][ 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. [ 46.890580][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 46.914824][ T3597] [ 46.917285][ T3597] ============================= [ 46.922182][ T3597] WARNING: suspicious RCU usage [ 46.927151][ T3597] 5.17.0-rc3-syzkaller-01120-gf126ec9d6e57 #0 Not tainted [ 46.934580][ T3597] ----------------------------- [ 46.939692][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 46.948129][ T3597] [ 46.948129][ T3597] other info that might help us debug this: [ 46.948129][ T3597] [ 46.958404][ T3597] [ 46.958404][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 46.966529][ T3597] 2 locks held by syz-executor.0/3597: [ 46.972047][ T3597] #0: ffffffff8d32cba8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 46.981516][ T3597] #1: ffff888018dc15f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 46.991681][ T3597] [ 46.991681][ T3597] stack backtrace: [ 46.997703][ T3597] CPU: 0 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller-01120-gf126ec9d6e57 #0 [ 47.008219][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.018617][ T3597] Call Trace: [ 47.021891][ T3597] [ 47.024819][ T3597] dump_stack_lvl+0xcd/0x134 [ 47.029435][ T3597] hsr_node_get_first+0x9b/0xb0 [ 47.034306][ T3597] hsr_create_self_node+0x22d/0x650 [ 47.039624][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 47.044586][ T3597] hsr_newlink+0x315/0x730 [ 47.049120][ T3597] ? hsr_dellink+0x130/0x130 [ 47.053886][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 47.058913][ T3597] ? hsr_dellink+0x130/0x130 [ 47.063502][ T3597] __rtnl_newlink+0x107c/0x1760 [ 47.068379][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 47.073068][ T3597] ? is_bpf_text_address+0x77/0x170 [ 47.078279][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 47.083222][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 47.088434][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 47.094504][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 47.100312][ T3597] ? is_bpf_text_address+0x99/0x170 [ 47.105512][ T3597] ? kernel_text_address+0x39/0x80 [ 47.110624][ T3597] ? __kernel_text_address+0x9/0x30 [ 47.115834][ T3597] ? unwind_get_return_address+0x51/0x90 [ 47.121464][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 47.126675][ T3597] ? arch_stack_walk+0x93/0xe0 [ 47.131493][ T3597] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 47.136992][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 47.142550][ T3597] rtnl_newlink+0x64/0xa0 [ 47.146883][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 47.151911][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 47.156872][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 47.161441][ T3597] netlink_rcv_skb+0x153/0x420 [ 47.166233][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 47.171118][ T3597] ? netlink_ack+0xa60/0xa60 [ 47.175805][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 47.181471][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 47.186951][ T3597] netlink_unicast+0x539/0x7e0 [ 47.191734][ T3597] ? netlink_attachskb+0x880/0x880 [ 47.196856][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 47.203115][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 47.209447][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 47.214620][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 47.220361][ T3597] ? __check_object_size+0x16e/0x310 [ 47.225681][ T3597] netlink_sendmsg+0x904/0xe00 [ 47.230467][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 47.235587][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 47.241835][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 47.246872][ T3597] sock_sendmsg+0xcf/0x120 [ 47.251302][ T3597] __sys_sendto+0x21c/0x320 [ 47.255808][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 47.261279][ T3597] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 47.267281][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 47.272832][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 47.277697][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 47.282582][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 47.287386][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 47.292606][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 47.298509][ T3597] do_syscall_64+0x35/0xb0 [ 47.302928][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 47.308831][ T3597] RIP: 0033:0x7f89ee7f2e1c [ 47.313270][ 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 [ 47.333485][ T3597] RSP: 002b:00007fffb5c90f90 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 47.342246][ T3597] RAX: ffffffffffffffda RBX: 00007f89ef88b320 RCX: 00007f89ee7f2e1c [ 47.350215][ T3597] RDX: 0000000000000048 RSI: 00007f89ef88b370 RDI: 0000000000000003 [ 47.358203][ T3597] RBP: 0000000000000000 R08: 00007fffb5c90fe4 R09: 000000000000000c [ 47.366629][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 47.374778][ T3597] R13: 00007f89ef88b370 R14: 0000000000000003 R15: 0000000000000000 [ 47.382870][ T3597] [ 47.391655][ T3597] device hsr_slave_0 entered promiscuous mode [ 47.399012][ T3597] device hsr_slave_1 entered promiscuous mode [ 47.478274][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 47.489238][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 47.498549][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 47.507320][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 47.529327][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.536886][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.544951][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.552168][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.598801][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.611719][ T1131] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.624134][ T1131] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.633620][ T1131] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.641484][ T1131] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 47.656354][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.665746][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 47.675091][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 47.685018][ T3608] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.693007][ T3608] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.718183][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 47.727115][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 47.736730][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.744140][ T3607] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.753997][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 47.763437][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 47.773240][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 47.782824][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.792781][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 47.801684][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 47.813518][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 47.821410][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 47.830255][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 47.844293][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 47.853580][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 47.866035][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 47.881683][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 47.889782][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 47.905777][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 48.032171][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 48.042428][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 48.055589][ T3597] device veth0_vlan entered promiscuous mode [ 48.064123][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 48.073375][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 48.081979][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 48.089896][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 48.102593][ T3597] device veth1_vlan entered promiscuous mode [ 48.121584][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 48.129746][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 48.138025][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 48.146972][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 48.158283][ T3597] device veth0_macvtap entered promiscuous mode [ 48.167560][ T3597] device veth1_macvtap entered promiscuous mode [ 48.183106][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 48.190656][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 48.199354][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 48.207490][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 48.216511][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 48.229226][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 48.237127][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 48.245978][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 48.257706][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.266921][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.276025][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.285272][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 48.345795][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 48.355449][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 48.374702][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 48.383989][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 48.392464][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 48.401531][ T3259] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/12 03:56:17 building call list... [ 48.640015][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 50.712663][ T3592] can: request_module (can-proto-0) failed. [ 50.735785][ T3592] can: request_module (can-proto-0) failed. [ 50.756634][ T3592] can: request_module (can-proto-0) failed. executing program [ 50.993946][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 51.178979][ T3597] syz-executor.0 (3597) used greatest stack depth: 22504 bytes left