DUID 00:04:1b:66:36:25:cc:bb:2d:eb:42:73:ce:96:f3:b7:d0:c0 forked to background, child pid 3175 [ 28.969429][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.986247][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.86' (ECDSA) to the list of known hosts. 2022/02/17 13:57:45 fuzzer started 2022/02/17 13:57:45 connecting to host at 10.128.0.169:44335 2022/02/17 13:57:45 checking machine... 2022/02/17 13:57:45 checking revisions... 2022/02/17 13:57:45 testing simple program... syzkaller login: [ 50.676979][ T3597] cgroup: Unknown subsys name 'net' [ 50.794667][ T3597] cgroup: Unknown subsys name 'rlimit' [ 51.988781][ T3600] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.996927][ T3600] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.005119][ T3600] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.013533][ T3600] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.021606][ T3600] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.029408][ T3600] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.120289][ T3599] chnl_net:caif_netlink_parms(): no params data found [ 52.163248][ T3599] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.170812][ T3599] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.179100][ T3599] device bridge_slave_0 entered promiscuous mode [ 52.188370][ T3599] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.195898][ T3599] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.203965][ T3599] device bridge_slave_1 entered promiscuous mode [ 52.224854][ T3599] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.236083][ T3599] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.259434][ T3599] team0: Port device team_slave_0 added [ 52.266765][ T3599] team0: Port device team_slave_1 added [ 52.283931][ T3599] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.290974][ T3599] 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. [ 52.316927][ T3599] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.329824][ T3599] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.336774][ T3599] 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. [ 52.362711][ T3599] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.387015][ T3599] [ 52.389474][ T3599] ============================= [ 52.394330][ T3599] WARNING: suspicious RCU usage [ 52.399234][ T3599] 5.17.0-rc2-syzkaller-00971-g9b6eb0478dfa #0 Not tainted [ 52.406355][ T3599] ----------------------------- [ 52.411268][ T3599] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 52.419453][ T3599] [ 52.419453][ T3599] other info that might help us debug this: [ 52.419453][ T3599] [ 52.429771][ T3599] [ 52.429771][ T3599] rcu_scheduler_active = 2, debug_locks = 1 [ 52.437854][ T3599] 2 locks held by syz-executor.0/3599: [ 52.443379][ T3599] #0: ffffffff8d32caa8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.453083][ T3599] #1: ffff88806ec155f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.463506][ T3599] [ 52.463506][ T3599] stack backtrace: [ 52.469449][ T3599] CPU: 1 PID: 3599 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00971-g9b6eb0478dfa #0 [ 52.480066][ T3599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.490146][ T3599] Call Trace: [ 52.493436][ T3599] [ 52.496372][ T3599] dump_stack_lvl+0xcd/0x134 [ 52.500983][ T3599] hsr_node_get_first+0x9b/0xb0 [ 52.505948][ T3599] hsr_create_self_node+0x22d/0x650 [ 52.511161][ T3599] hsr_dev_finalize+0x2c1/0x7d0 [ 52.516016][ T3599] hsr_newlink+0x315/0x730 [ 52.520495][ T3599] ? hsr_dellink+0x130/0x130 [ 52.525133][ T3599] ? rtnl_create_link+0x7e8/0xc00 [ 52.530174][ T3599] ? hsr_dellink+0x130/0x130 [ 52.534768][ T3599] __rtnl_newlink+0x107c/0x1760 [ 52.539630][ T3599] ? rtnl_setlink+0x3c0/0x3c0 [ 52.544319][ T3599] ? is_bpf_text_address+0x77/0x170 [ 52.549611][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 52.554636][ T3599] ? unwind_next_frame+0xee1/0x1ce0 [ 52.559848][ T3599] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.565916][ T3599] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.571642][ T3599] ? is_bpf_text_address+0x99/0x170 [ 52.576845][ T3599] ? kernel_text_address+0x39/0x80 [ 52.581958][ T3599] ? __kernel_text_address+0x9/0x30 [ 52.587170][ T3599] ? unwind_get_return_address+0x51/0x90 [ 52.592816][ T3599] ? create_prof_cpu_mask+0x20/0x20 [ 52.598309][ T3599] ? arch_stack_walk+0x93/0xe0 [ 52.603149][ T3599] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 52.608628][ T3599] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.614197][ T3599] rtnl_newlink+0x64/0xa0 [ 52.618530][ T3599] ? __rtnl_newlink+0x1760/0x1760 [ 52.623554][ T3599] rtnetlink_rcv_msg+0x413/0xb80 [ 52.628504][ T3599] ? rtnl_newlink+0xa0/0xa0 [ 52.633023][ T3599] netlink_rcv_skb+0x153/0x420 [ 52.637798][ T3599] ? rtnl_newlink+0xa0/0xa0 [ 52.642302][ T3599] ? netlink_ack+0xa60/0xa60 [ 52.646904][ T3599] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.652193][ T3599] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.657491][ T3599] netlink_unicast+0x539/0x7e0 [ 52.662267][ T3599] ? netlink_attachskb+0x880/0x880 [ 52.667392][ T3599] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.673645][ T3599] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.679893][ T3599] ? __phys_addr_symbol+0x2c/0x70 [ 52.685089][ T3599] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.690838][ T3599] ? __check_object_size+0x16e/0x310 [ 52.696146][ T3599] netlink_sendmsg+0x904/0xe00 [ 52.700945][ T3599] ? netlink_unicast+0x7e0/0x7e0 [ 52.706009][ T3599] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.712276][ T3599] ? netlink_unicast+0x7e0/0x7e0 [ 52.717224][ T3599] sock_sendmsg+0xcf/0x120 [ 52.721649][ T3599] __sys_sendto+0x21c/0x320 [ 52.726158][ T3599] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.731539][ T3599] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 52.737718][ T3599] ? __context_tracking_exit+0xb8/0xe0 [ 52.743185][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 52.748050][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 52.752932][ T3599] __x64_sys_sendto+0xdd/0x1b0 [ 52.757699][ T3599] ? lockdep_hardirqs_on+0x79/0x100 [ 52.762906][ T3599] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.768805][ T3599] do_syscall_64+0x35/0xb0 [ 52.773244][ T3599] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.779155][ T3599] RIP: 0033:0x7f17c2cfde1c [ 52.783581][ T3599] 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 [ 52.803359][ T3599] RSP: 002b:00007ffdad910570 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.812048][ T3599] RAX: ffffffffffffffda RBX: 00007f17c3d96320 RCX: 00007f17c2cfde1c [ 52.820113][ T3599] RDX: 0000000000000048 RSI: 00007f17c3d96370 RDI: 0000000000000003 [ 52.828360][ T3599] RBP: 0000000000000000 R08: 00007ffdad9105c4 R09: 000000000000000c [ 52.836415][ T3599] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.844385][ T3599] R13: 00007f17c3d96370 R14: 0000000000000003 R15: 0000000000000000 [ 52.852369][ T3599] [ 52.863216][ T3599] device hsr_slave_0 entered promiscuous mode [ 52.870701][ T3599] device hsr_slave_1 entered promiscuous mode [ 52.952554][ T3599] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.963029][ T3599] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.972309][ T3599] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.982420][ T3599] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.002957][ T3599] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.010152][ T3599] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.018032][ T3599] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.025231][ T3599] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.072252][ T3599] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.085952][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.096447][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.105119][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.113633][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.126582][ T3599] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.135832][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.145825][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.154574][ T3319] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.161687][ T3319] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.174818][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.185926][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.195173][ T3319] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.202535][ T3319] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.228891][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.237742][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.246590][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.255836][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.264360][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.272960][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.281459][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.289914][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.298248][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.306536][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.315745][ T3599] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.325083][ T3319] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.346855][ T3599] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.354707][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 53.362441][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 53.470141][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.479383][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.497816][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 53.506757][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.516966][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.525287][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.534449][ T3599] device veth0_vlan entered promiscuous mode [ 53.546235][ T3599] device veth1_vlan entered promiscuous mode [ 53.563964][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.572936][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.581315][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.590603][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.602868][ T3599] device veth0_macvtap entered promiscuous mode [ 53.612097][ T3599] device veth1_macvtap entered promiscuous mode [ 53.627062][ T3599] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.634651][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.642916][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 53.651315][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.660278][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.672384][ T3599] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.679865][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.688727][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.701328][ T3599] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.710802][ T3599] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.720018][ T3599] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.728971][ T3599] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.792825][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.808451][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.822501][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.831279][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.839629][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.848433][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/17 13:57:48 building call list... [ 56.321600][ T3593] can: request_module (can-proto-0) failed. [ 56.344483][ T3593] can: request_module (can-proto-0) failed. [ 56.365561][ T3593] can: request_module (can-proto-0) failed. executing program [ 56.874628][ T54] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0