DUID 00:04:bf:e1:a4:b2:b1:2b:3d:59:87:c9:47:74:aa:d6:f6:6a forked to background, child pid 3174 [ 31.415982][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.426602][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.74' (ECDSA) to the list of known hosts. 2022/02/11 00:16:51 fuzzer started 2022/02/11 00:16:51 connecting to host at 10.128.0.169:40017 2022/02/11 00:16:51 checking machine... 2022/02/11 00:16:51 checking revisions... 2022/02/11 00:16:51 testing simple program... syzkaller login: [ 46.406496][ T3601] cgroup: Unknown subsys name 'net' [ 46.530621][ T3601] cgroup: Unknown subsys name 'rlimit' [ 47.733673][ T3605] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 47.741879][ T3605] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 47.749966][ T3605] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 47.758019][ T3605] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 47.765939][ T3605] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 47.773074][ T3605] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 47.866064][ T3603] chnl_net:caif_netlink_parms(): no params data found [ 47.909589][ T3603] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.917172][ T3603] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.925851][ T3603] device bridge_slave_0 entered promiscuous mode [ 47.934879][ T3603] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.942018][ T3603] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.950061][ T3603] device bridge_slave_1 entered promiscuous mode [ 47.972974][ T3603] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 47.985169][ T3603] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 48.008830][ T3603] team0: Port device team_slave_0 added [ 48.016704][ T3603] team0: Port device team_slave_1 added [ 48.035045][ T3603] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 48.042026][ 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. [ 48.068370][ T3603] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 48.080981][ T3603] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 48.088156][ 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. [ 48.114500][ T3603] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 48.138621][ T3603] [ 48.141113][ T3603] ============================= [ 48.146012][ T3603] WARNING: suspicious RCU usage [ 48.150866][ T3603] 5.17.0-rc2-syzkaller-00942-g4f5e483b8c7a #0 Not tainted [ 48.158057][ T3603] ----------------------------- [ 48.162910][ T3603] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 48.171200][ T3603] [ 48.171200][ T3603] other info that might help us debug this: [ 48.171200][ T3603] [ 48.181597][ T3603] [ 48.181597][ T3603] rcu_scheduler_active = 2, debug_locks = 1 [ 48.189816][ T3603] 2 locks held by syz-executor.0/3603: [ 48.195323][ T3603] #0: ffffffff8d32c7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 48.204805][ T3603] #1: ffff88801c3e15f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 48.214969][ T3603] [ 48.214969][ T3603] stack backtrace: [ 48.220875][ T3603] CPU: 0 PID: 3603 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00942-g4f5e483b8c7a #0 [ 48.231283][ T3603] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.241348][ T3603] Call Trace: [ 48.244626][ T3603] [ 48.247558][ T3603] dump_stack_lvl+0xcd/0x134 [ 48.252158][ T3603] hsr_node_get_first+0x9b/0xb0 [ 48.257043][ T3603] hsr_create_self_node+0x22d/0x650 [ 48.262255][ T3603] hsr_dev_finalize+0x2c1/0x7d0 [ 48.267115][ T3603] hsr_newlink+0x315/0x730 [ 48.271535][ T3603] ? hsr_dellink+0x130/0x130 [ 48.276128][ T3603] ? rtnl_create_link+0x7e8/0xc00 [ 48.281156][ T3603] ? hsr_dellink+0x130/0x130 [ 48.285765][ T3603] __rtnl_newlink+0x107c/0x1760 [ 48.290636][ T3603] ? rtnl_setlink+0x3c0/0x3c0 [ 48.295324][ T3603] ? is_bpf_text_address+0x77/0x170 [ 48.300544][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 48.305402][ T3603] ? unwind_next_frame+0xee1/0x1ce0 [ 48.310602][ T3603] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.316757][ T3603] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 48.322515][ T3603] ? is_bpf_text_address+0x99/0x170 [ 48.327728][ T3603] ? kernel_text_address+0x39/0x80 [ 48.332850][ T3603] ? __kernel_text_address+0x9/0x30 [ 48.338053][ T3603] ? unwind_get_return_address+0x51/0x90 [ 48.343694][ T3603] ? create_prof_cpu_mask+0x20/0x20 [ 48.348911][ T3603] ? arch_stack_walk+0x93/0xe0 [ 48.353738][ T3603] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 48.359226][ T3603] ? rcu_read_lock_sched_held+0x3a/0x70 [ 48.364788][ T3603] rtnl_newlink+0x64/0xa0 [ 48.369121][ T3603] ? __rtnl_newlink+0x1760/0x1760 [ 48.374150][ T3603] rtnetlink_rcv_msg+0x413/0xb80 [ 48.379101][ T3603] ? rtnl_newlink+0xa0/0xa0 [ 48.383629][ T3603] netlink_rcv_skb+0x153/0x420 [ 48.388394][ T3603] ? rtnl_newlink+0xa0/0xa0 [ 48.392903][ T3603] ? netlink_ack+0xa60/0xa60 [ 48.397505][ T3603] ? netlink_deliver_tap+0x1a2/0xc40 [ 48.402904][ T3603] ? netlink_deliver_tap+0x1b1/0xc40 [ 48.408198][ T3603] netlink_unicast+0x539/0x7e0 [ 48.412973][ T3603] ? netlink_attachskb+0x880/0x880 [ 48.418082][ T3603] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 48.424420][ T3603] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 48.430670][ T3603] ? __phys_addr_symbol+0x2c/0x70 [ 48.435701][ T3603] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 48.441428][ T3603] ? __check_object_size+0x16e/0x310 [ 48.446805][ T3603] netlink_sendmsg+0x904/0xe00 [ 48.451580][ T3603] ? netlink_unicast+0x7e0/0x7e0 [ 48.456543][ T3603] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 48.462791][ T3603] ? netlink_unicast+0x7e0/0x7e0 [ 48.467742][ T3603] sock_sendmsg+0xcf/0x120 [ 48.472186][ T3603] __sys_sendto+0x21c/0x320 [ 48.476695][ T3603] ? __ia32_sys_getpeername+0xb0/0xb0 [ 48.482078][ T3603] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 48.488081][ T3603] ? __context_tracking_exit+0xb8/0xe0 [ 48.493544][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 48.498398][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 48.503266][ T3603] __x64_sys_sendto+0xdd/0x1b0 [ 48.508032][ T3603] ? lockdep_hardirqs_on+0x79/0x100 [ 48.513234][ T3603] ? syscall_enter_from_user_mode+0x21/0x70 [ 48.519144][ T3603] do_syscall_64+0x35/0xb0 [ 48.523566][ T3603] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 48.529459][ T3603] RIP: 0033:0x7f1aecf4ee1c [ 48.533874][ 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 [ 48.553487][ T3603] RSP: 002b:00007ffe97ae65b0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 48.561928][ T3603] RAX: ffffffffffffffda RBX: 00007f1aedfe7320 RCX: 00007f1aecf4ee1c [ 48.569895][ T3603] RDX: 0000000000000048 RSI: 00007f1aedfe7370 RDI: 0000000000000003 [ 48.577861][ T3603] RBP: 0000000000000000 R08: 00007ffe97ae6604 R09: 000000000000000c [ 48.585825][ T3603] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 48.593791][ T3603] R13: 00007f1aedfe7370 R14: 0000000000000003 R15: 0000000000000000 [ 48.601781][ T3603] [ 48.612291][ T3603] device hsr_slave_0 entered promiscuous mode [ 48.619550][ T3603] device hsr_slave_1 entered promiscuous mode [ 48.700346][ T3603] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 48.711115][ T3603] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 48.720964][ T3603] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 48.729782][ T3603] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 48.751465][ T3603] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.758673][ T3603] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.766636][ T3603] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.773724][ T3603] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.818576][ T3603] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.830231][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.841940][ T21] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.850693][ T21] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.859999][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 48.875611][ T3603] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.885707][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 48.895352][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.903761][ T6] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.911021][ T6] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.927928][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 48.938937][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.947696][ T6] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.954786][ T6] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.963121][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 48.972059][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 48.983057][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 48.992816][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.002425][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 49.019358][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 49.028190][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.036950][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 49.046652][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 49.056032][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 49.064543][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 49.076320][ T3603] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 49.094372][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 49.101826][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 49.116634][ T3603] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 49.255050][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 49.263794][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 49.277135][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 49.286551][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 49.297706][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 49.306004][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 49.316020][ T3603] device veth0_vlan entered promiscuous mode [ 49.327465][ T3603] device veth1_vlan entered promiscuous mode [ 49.346872][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 49.355323][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 49.363296][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 49.372718][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 49.385399][ T3603] device veth0_macvtap entered promiscuous mode [ 49.394942][ T3603] device veth1_macvtap entered promiscuous mode [ 49.409968][ T3603] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 49.418665][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 49.427339][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 49.435942][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 49.445281][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 49.457611][ T3603] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 49.465591][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 49.475066][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 49.485574][ T3603] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.495914][ T3603] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.505345][ T3603] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.514122][ T3603] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.576934][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.585230][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.597016][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 49.613179][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.621734][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.632156][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/11 00:16:54 building call list... [ 49.876877][ T44] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 51.921234][ T3597] can: request_module (can-proto-0) failed. [ 51.943260][ T3597] can: request_module (can-proto-0) failed. [ 51.964829][ T3597] can: request_module (can-proto-0) failed. executing program [ 52.414392][ T44] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0