DUID 00:04:08:6f:95:b8:7a:da:47:d5:ae:28:d8:4d:e4:58:2e:6d forked to background, child pid 3173 [ 27.729362][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.740438][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.30' (ECDSA) to the list of known hosts. 2022/02/07 04:51:58 fuzzer started 2022/02/07 04:51:58 connecting to host at 10.128.0.169:41735 2022/02/07 04:51:58 checking machine... 2022/02/07 04:51:58 checking revisions... 2022/02/07 04:51:58 testing simple program... syzkaller login: [ 43.871810][ T3601] cgroup: Unknown subsys name 'net' [ 44.015064][ T3601] cgroup: Unknown subsys name 'rlimit' [ 45.316839][ T3604] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 45.324919][ T3604] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 45.332698][ T3604] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 45.340620][ T3607] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 45.348306][ T3607] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 45.355531][ T3607] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 45.442483][ T3603] chnl_net:caif_netlink_parms(): no params data found [ 45.484981][ T3603] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.492692][ T3603] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.500879][ T3603] device bridge_slave_0 entered promiscuous mode [ 45.510253][ T3603] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.517969][ T3603] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.525687][ T3603] device bridge_slave_1 entered promiscuous mode [ 45.546576][ T3603] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 45.558148][ T3603] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 45.581217][ T3603] team0: Port device team_slave_0 added [ 45.588560][ T3603] team0: Port device team_slave_1 added [ 45.606509][ T3603] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 45.613452][ T3603] 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. [ 45.639611][ T3603] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 45.653263][ T3603] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 45.660536][ T3603] 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. [ 45.686519][ T3603] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 45.709874][ T3603] [ 45.712301][ T3603] ============================= [ 45.717179][ T3603] WARNING: suspicious RCU usage [ 45.722023][ T3603] 5.17.0-rc3-next-20220207-syzkaller #0 Not tainted [ 45.728651][ T3603] ----------------------------- [ 45.733492][ T3603] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 45.741674][ T3603] [ 45.741674][ T3603] other info that might help us debug this: [ 45.741674][ T3603] [ 45.751932][ T3603] [ 45.751932][ T3603] rcu_scheduler_active = 2, debug_locks = 1 [ 45.760035][ T3603] 2 locks held by syz-executor.0/3603: [ 45.765494][ T3603] #0: ffffffff8d3353a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 45.774983][ T3603] #1: ffff888073c655f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 45.785183][ T3603] [ 45.785183][ T3603] stack backtrace: [ 45.791126][ T3603] CPU: 1 PID: 3603 Comm: syz-executor.0 Not tainted 5.17.0-rc3-next-20220207-syzkaller #0 [ 45.801028][ T3603] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.811087][ T3603] Call Trace: [ 45.814365][ T3603] [ 45.817296][ T3603] dump_stack_lvl+0xcd/0x134 [ 45.821903][ T3603] hsr_node_get_first+0x9b/0xb0 [ 45.826756][ T3603] hsr_create_self_node+0x22d/0x650 [ 45.831962][ T3603] hsr_dev_finalize+0x2c1/0x7d0 [ 45.836820][ T3603] hsr_newlink+0x315/0x730 [ 45.841238][ T3603] ? hsr_dellink+0x130/0x130 [ 45.845824][ T3603] ? rtnl_create_link+0x7e8/0xc00 [ 45.850849][ T3603] ? hsr_dellink+0x130/0x130 [ 45.855440][ T3603] __rtnl_newlink+0x107c/0x1760 [ 45.860301][ T3603] ? rtnl_setlink+0x3c0/0x3c0 [ 45.864986][ T3603] ? is_bpf_text_address+0x77/0x170 [ 45.870200][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 45.875054][ T3603] ? unwind_next_frame+0xee1/0x1ce0 [ 45.880250][ T3603] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 45.886315][ T3603] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 45.892047][ T3603] ? is_bpf_text_address+0x99/0x170 [ 45.897256][ T3603] ? kernel_text_address+0x39/0x80 [ 45.902374][ T3603] ? __kernel_text_address+0x9/0x30 [ 45.907576][ T3603] ? unwind_get_return_address+0x51/0x90 [ 45.913222][ T3603] ? create_prof_cpu_mask+0x20/0x20 [ 45.918427][ T3603] ? arch_stack_walk+0x93/0xe0 [ 45.923260][ T3603] ? rcu_read_lock_sched_held+0x3a/0x70 [ 45.928815][ T3603] rtnl_newlink+0x64/0xa0 [ 45.933146][ T3603] ? __rtnl_newlink+0x1760/0x1760 [ 45.938189][ T3603] rtnetlink_rcv_msg+0x413/0xb80 [ 45.943131][ T3603] ? rtnl_newlink+0xa0/0xa0 [ 45.947649][ T3603] netlink_rcv_skb+0x153/0x420 [ 45.952417][ T3603] ? rtnl_newlink+0xa0/0xa0 [ 45.956919][ T3603] ? netlink_ack+0xa80/0xa80 [ 45.961506][ T3603] ? netlink_deliver_tap+0x1a2/0xc40 [ 45.966795][ T3603] ? netlink_deliver_tap+0x1b1/0xc40 [ 45.972090][ T3603] netlink_unicast+0x539/0x7e0 [ 45.976856][ T3603] ? netlink_attachskb+0x880/0x880 [ 45.981969][ T3603] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 45.988223][ T3603] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 45.994484][ T3603] ? __phys_addr_symbol+0x2c/0x70 [ 45.999536][ T3603] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 46.005283][ T3603] ? __check_object_size+0x16c/0x4f0 [ 46.010583][ T3603] netlink_sendmsg+0x904/0xe00 [ 46.015363][ T3603] ? netlink_unicast+0x7e0/0x7e0 [ 46.020315][ T3603] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 46.026568][ T3603] ? netlink_unicast+0x7e0/0x7e0 [ 46.031509][ T3603] sock_sendmsg+0xcf/0x120 [ 46.035933][ T3603] __sys_sendto+0x21c/0x320 [ 46.040446][ T3603] ? __ia32_sys_getpeername+0xb0/0xb0 [ 46.045824][ T3603] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 46.051824][ T3603] ? __context_tracking_exit+0xb8/0xe0 [ 46.057303][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 46.062159][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 46.067027][ T3603] __x64_sys_sendto+0xdd/0x1b0 [ 46.071798][ T3603] ? lockdep_hardirqs_on+0x79/0x100 [ 46.077001][ T3603] ? syscall_enter_from_user_mode+0x21/0x70 [ 46.082904][ T3603] do_syscall_64+0x35/0xb0 [ 46.087324][ T3603] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 46.093215][ T3603] RIP: 0033:0x7fac8b203e1c [ 46.097627][ T3603] 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 [ 46.117230][ T3603] RSP: 002b:00007ffe01e57cf0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 46.125649][ T3603] RAX: ffffffffffffffda RBX: 00007fac8c29c320 RCX: 00007fac8b203e1c [ 46.133615][ T3603] RDX: 0000000000000048 RSI: 00007fac8c29c370 RDI: 0000000000000003 [ 46.141599][ T3603] RBP: 0000000000000000 R08: 00007ffe01e57d44 R09: 000000000000000c [ 46.149567][ T3603] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 46.157533][ T3603] R13: 00007fac8c29c370 R14: 0000000000000003 R15: 0000000000000000 [ 46.165515][ T3603] [ 46.176930][ T3603] device hsr_slave_0 entered promiscuous mode [ 46.183841][ T3603] device hsr_slave_1 entered promiscuous mode [ 46.264177][ T3603] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 46.275237][ T3603] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 46.284527][ T3603] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 46.293322][ T3603] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 46.313899][ T3603] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.321128][ T3603] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.329110][ T3603] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.336248][ T3603] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.384539][ T3603] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.397203][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 46.408833][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.418141][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.425932][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 46.440615][ T3603] 8021q: adding VLAN 0 to HW filter on device team0 [ 46.451197][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 46.460358][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 46.469633][ T21] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.476794][ T21] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.487883][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 46.497397][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 46.505837][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.513006][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.537906][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 46.547850][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 46.557040][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 46.566496][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 46.575271][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 46.584649][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 46.593564][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 46.602417][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 46.615686][ T3603] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 46.627710][ T3603] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 46.635666][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 46.656552][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 46.665112][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 46.687634][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 46.697694][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 46.712832][ T3603] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 46.846194][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 46.854799][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 46.869738][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 46.878737][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 46.887870][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 46.895546][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 46.905097][ T3603] device veth0_vlan entered promiscuous mode [ 46.917015][ T3603] device veth1_vlan entered promiscuous mode [ 46.935379][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 46.943742][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 46.952265][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 46.961447][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 46.971824][ T3603] device veth0_macvtap entered promiscuous mode [ 46.982109][ T3603] device veth1_macvtap entered promiscuous mode [ 46.996906][ T3603] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 47.004347][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 47.013497][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 47.021803][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 47.031409][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 47.043635][ T3603] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 47.051203][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 47.059972][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 47.071329][ T3603] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.080776][ T3603] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.090816][ T3603] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.099656][ T3603] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.161599][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 47.180157][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 47.189549][ T54] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 47.190014][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 47.200771][ T54] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 47.215127][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/07 04:52:02 building call list... [ 47.387324][ T140] Bluetooth: hci0: command 0x0409 tx timeout [ 47.490850][ T54] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 49.502005][ T3594] can: request_module (can-proto-0) failed. [ 49.524818][ T3594] can: request_module (can-proto-0) failed. [ 49.546700][ T3594] can: request_module (can-proto-0) failed. executing program [ 50.070202][ T54] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0