forked to background, child pid 3174 no interfaces have a carrier [ 30.003483][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.013805][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.16' (ECDSA) to the list of known hosts. 2022/02/06 13:20:31 fuzzer started 2022/02/06 13:20:31 connecting to host at 10.128.0.169:43733 2022/02/06 13:20:31 checking machine... 2022/02/06 13:20:31 checking revisions... 2022/02/06 13:20:32 testing simple program... syzkaller login: [ 51.412435][ T3596] cgroup: Unknown subsys name 'net' [ 51.547968][ T3596] cgroup: Unknown subsys name 'rlimit' [ 52.796195][ T3601] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.804562][ T3601] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.812844][ T3601] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.820941][ T3601] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.828758][ T3601] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.836135][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.926310][ T3598] chnl_net:caif_netlink_parms(): no params data found [ 52.969454][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.978123][ T3598] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.986727][ T3598] device bridge_slave_0 entered promiscuous mode [ 52.996135][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.007082][ T3598] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.016018][ T3598] device bridge_slave_1 entered promiscuous mode [ 53.039311][ T3598] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.051141][ T3598] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.073916][ T3598] team0: Port device team_slave_0 added [ 53.081860][ T3598] team0: Port device team_slave_1 added [ 53.098729][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.105864][ T3598] 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. [ 53.132129][ T3598] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.146105][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.153165][ T3598] 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. [ 53.179618][ T3598] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.203238][ T3598] [ 53.205711][ T3598] ============================= [ 53.210614][ T3598] WARNING: suspicious RCU usage [ 53.215545][ T3598] 5.17.0-rc2-syzkaller-00652-g9c1be1935fb6 #0 Not tainted [ 53.222701][ T3598] ----------------------------- [ 53.227539][ T3598] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 53.235739][ T3598] [ 53.235739][ T3598] other info that might help us debug this: [ 53.235739][ T3598] [ 53.246016][ T3598] [ 53.246016][ T3598] rcu_scheduler_active = 2, debug_locks = 1 [ 53.254119][ T3598] 2 locks held by syz-executor.0/3598: [ 53.259639][ T3598] #0: ffffffff8d32c128 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 53.269159][ T3598] #1: ffff88807be455f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 53.279341][ T3598] [ 53.279341][ T3598] stack backtrace: [ 53.285243][ T3598] CPU: 0 PID: 3598 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00652-g9c1be1935fb6 #0 [ 53.295947][ T3598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.306164][ T3598] Call Trace: [ 53.309447][ T3598] [ 53.312504][ T3598] dump_stack_lvl+0xcd/0x134 [ 53.317100][ T3598] hsr_node_get_first+0x9b/0xb0 [ 53.321963][ T3598] hsr_create_self_node+0x22d/0x650 [ 53.327164][ T3598] hsr_dev_finalize+0x2c1/0x7d0 [ 53.332024][ T3598] hsr_newlink+0x315/0x730 [ 53.336450][ T3598] ? hsr_dellink+0x130/0x130 [ 53.341047][ T3598] ? rtnl_create_link+0x7e8/0xc00 [ 53.346096][ T3598] ? hsr_dellink+0x130/0x130 [ 53.350698][ T3598] __rtnl_newlink+0x107c/0x1760 [ 53.355556][ T3598] ? rtnl_setlink+0x3c0/0x3c0 [ 53.360244][ T3598] ? is_bpf_text_address+0x77/0x170 [ 53.365466][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.370315][ T3598] ? unwind_next_frame+0xee1/0x1ce0 [ 53.375526][ T3598] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.381594][ T3598] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.387480][ T3598] ? is_bpf_text_address+0x99/0x170 [ 53.392774][ T3598] ? kernel_text_address+0x39/0x80 [ 53.397883][ T3598] ? __kernel_text_address+0x9/0x30 [ 53.403173][ T3598] ? unwind_get_return_address+0x51/0x90 [ 53.408896][ T3598] ? create_prof_cpu_mask+0x20/0x20 [ 53.414100][ T3598] ? arch_stack_walk+0x93/0xe0 [ 53.419019][ T3598] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.424580][ T3598] rtnl_newlink+0x64/0xa0 [ 53.428995][ T3598] ? __rtnl_newlink+0x1760/0x1760 [ 53.434021][ T3598] rtnetlink_rcv_msg+0x413/0xb80 [ 53.438970][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 53.443588][ T3598] netlink_rcv_skb+0x153/0x420 [ 53.448354][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 53.452852][ T3598] ? netlink_ack+0xa60/0xa60 [ 53.457434][ T3598] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.462729][ T3598] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.468100][ T3598] netlink_unicast+0x539/0x7e0 [ 53.472956][ T3598] ? netlink_attachskb+0x880/0x880 [ 53.478072][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.484399][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.490636][ T3598] ? __phys_addr_symbol+0x2c/0x70 [ 53.495656][ T3598] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.501372][ T3598] ? __check_object_size+0x16e/0x310 [ 53.506658][ T3598] netlink_sendmsg+0x904/0xe00 [ 53.511423][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 53.516359][ T3598] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.522599][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 53.527541][ T3598] sock_sendmsg+0xcf/0x120 [ 53.531996][ T3598] __sys_sendto+0x21c/0x320 [ 53.536495][ T3598] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.541865][ T3598] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 53.547857][ T3598] ? __context_tracking_exit+0xb8/0xe0 [ 53.553349][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.558198][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.563055][ T3598] __x64_sys_sendto+0xdd/0x1b0 [ 53.567815][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 53.573110][ T3598] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.579018][ T3598] do_syscall_64+0x35/0xb0 [ 53.583434][ T3598] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.589325][ T3598] RIP: 0033:0x7fa5814e5e1c [ 53.593741][ T3598] 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 [ 53.613359][ T3598] RSP: 002b:00007ffd11a75e90 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.621767][ T3598] RAX: ffffffffffffffda RBX: 00007fa58257e320 RCX: 00007fa5814e5e1c [ 53.629957][ T3598] RDX: 0000000000000048 RSI: 00007fa58257e370 RDI: 0000000000000003 [ 53.638007][ T3598] RBP: 0000000000000000 R08: 00007ffd11a75ee4 R09: 000000000000000c [ 53.646055][ T3598] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.654112][ T3598] R13: 00007fa58257e370 R14: 0000000000000003 R15: 0000000000000000 [ 53.662088][ T3598] [ 53.669358][ T3598] device hsr_slave_0 entered promiscuous mode [ 53.677057][ T3598] device hsr_slave_1 entered promiscuous mode [ 53.759207][ T3598] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.770222][ T3598] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.779609][ T3598] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.788619][ T3598] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.810554][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.817948][ T3598] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.826166][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.833457][ T3598] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.879809][ T3598] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.893380][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.905130][ T25] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.914082][ T25] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.922046][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.935142][ T3598] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.946440][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.955212][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.963644][ T25] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.970906][ T25] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.983921][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.993451][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.002343][ T917] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.009786][ T917] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.021795][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 54.039012][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 54.047677][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 54.057133][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.067171][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.076539][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.089720][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.098494][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 54.107652][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.119172][ T3598] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 54.131167][ T3598] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.139563][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.148303][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.166792][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.174525][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 54.187664][ T3598] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.329086][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.337877][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.351259][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.360826][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.372009][ T3598] device veth0_vlan entered promiscuous mode [ 54.379216][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.387194][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.401424][ T3598] device veth1_vlan entered promiscuous mode [ 54.420864][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.429665][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.437750][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.447903][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.460053][ T3598] device veth0_macvtap entered promiscuous mode [ 54.469775][ T3598] device veth1_macvtap entered promiscuous mode [ 54.485575][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.493835][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.502656][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.511037][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.520238][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.534748][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.542692][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.551804][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.563815][ T3598] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.572910][ T3598] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.581986][ T3598] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.591141][ T3598] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.652583][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.662246][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.674341][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.693532][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.702218][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.712279][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/06 13:20:35 building call list... [ 54.878335][ T3609] Bluetooth: hci0: command 0x0409 tx timeout [ 54.971606][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.026168][ T3589] can: request_module (can-proto-0) failed. [ 57.050283][ T3589] can: request_module (can-proto-0) failed. [ 57.071243][ T3589] can: request_module (can-proto-0) failed. executing program [ 57.471131][ T3598] syz-executor.0 (3598) used greatest stack depth: 22504 bytes left [ 57.510936][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0