DUID 00:04:63:3c:db:c8:83:d4:2a:b1:e5:3f:fc:31:79:55:3b:bc forked to background, child pid 3171 [ 27.816854][ T3172] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.829626][ T3172] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts. 2022/02/14 07:15:52 fuzzer started 2022/02/14 07:15:52 connecting to host at 10.128.0.169:33189 2022/02/14 07:15:52 checking machine... 2022/02/14 07:15:52 checking revisions... 2022/02/14 07:15:52 testing simple program... syzkaller login: [ 49.475872][ T3599] cgroup: Unknown subsys name 'net' [ 49.590880][ T3599] cgroup: Unknown subsys name 'rlimit' [ 50.851019][ T3606] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 50.859324][ T3606] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 50.867396][ T3606] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 50.875748][ T3606] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 50.883544][ T3606] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 50.891060][ T3606] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 50.979276][ T3603] chnl_net:caif_netlink_parms(): no params data found [ 51.021114][ T3603] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.029005][ T3603] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.037264][ T3603] device bridge_slave_0 entered promiscuous mode [ 51.046755][ T3603] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.054974][ T3603] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.063907][ T3603] device bridge_slave_1 entered promiscuous mode [ 51.086318][ T3603] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.097251][ T3603] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.119990][ T3603] team0: Port device team_slave_0 added [ 51.127885][ T3603] team0: Port device team_slave_1 added [ 51.145458][ T3603] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.152406][ 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. [ 51.179278][ T3603] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.192813][ T3603] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.199811][ 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. [ 51.226164][ T3603] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.251440][ T3603] [ 51.254561][ T3603] ============================= [ 51.259525][ T3603] WARNING: suspicious RCU usage [ 51.264512][ T3603] 5.17.0-rc4-next-20220214-syzkaller #0 Not tainted [ 51.271203][ T3603] ----------------------------- [ 51.276271][ T3603] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 51.284463][ T3603] [ 51.284463][ T3603] other info that might help us debug this: [ 51.284463][ T3603] [ 51.294757][ T3603] [ 51.294757][ T3603] rcu_scheduler_active = 2, debug_locks = 1 [ 51.303097][ T3603] 2 locks held by syz-executor.0/3603: [ 51.308632][ T3603] #0: ffffffff8d336928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 51.318219][ T3603] #1: ffff88814c3395f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 51.328469][ T3603] [ 51.328469][ T3603] stack backtrace: [ 51.334463][ T3603] CPU: 0 PID: 3603 Comm: syz-executor.0 Not tainted 5.17.0-rc4-next-20220214-syzkaller #0 [ 51.344429][ T3603] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.355094][ T3603] Call Trace: [ 51.358382][ T3603] [ 51.361299][ T3603] dump_stack_lvl+0xcd/0x134 [ 51.365882][ T3603] hsr_node_get_first+0x9b/0xb0 [ 51.370740][ T3603] hsr_create_self_node+0x22d/0x650 [ 51.375933][ T3603] hsr_dev_finalize+0x2c1/0x7d0 [ 51.380787][ T3603] hsr_newlink+0x315/0x730 [ 51.385200][ T3603] ? hsr_dellink+0x130/0x130 [ 51.389881][ T3603] ? rtnl_create_link+0x7e8/0xc00 [ 51.394896][ T3603] ? hsr_dellink+0x130/0x130 [ 51.399469][ T3603] __rtnl_newlink+0x107c/0x1760 [ 51.404437][ T3603] ? rtnl_setlink+0x3c0/0x3c0 [ 51.409215][ T3603] ? is_bpf_text_address+0x77/0x170 [ 51.414418][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 51.419348][ T3603] ? unwind_next_frame+0xee1/0x1ce0 [ 51.424534][ T3603] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.430623][ T3603] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 51.436358][ T3603] ? is_bpf_text_address+0x99/0x170 [ 51.441748][ T3603] ? kernel_text_address+0x39/0x80 [ 51.446862][ T3603] ? __kernel_text_address+0x9/0x30 [ 51.452060][ T3603] ? unwind_get_return_address+0x51/0x90 [ 51.457867][ T3603] ? create_prof_cpu_mask+0x20/0x20 [ 51.463066][ T3603] ? arch_stack_walk+0x93/0xe0 [ 51.467978][ T3603] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 51.473533][ T3603] ? rcu_read_lock_sched_held+0x3a/0x70 [ 51.479089][ T3603] rtnl_newlink+0x64/0xa0 [ 51.483417][ T3603] ? __rtnl_newlink+0x1760/0x1760 [ 51.488449][ T3603] rtnetlink_rcv_msg+0x413/0xb80 [ 51.493490][ T3603] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 51.498454][ T3603] netlink_rcv_skb+0x153/0x420 [ 51.503227][ T3603] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 51.508260][ T3603] ? netlink_ack+0xa80/0xa80 [ 51.512872][ T3603] ? netlink_deliver_tap+0x1a2/0xc40 [ 51.518169][ T3603] ? netlink_deliver_tap+0x1b1/0xc40 [ 51.523570][ T3603] netlink_unicast+0x539/0x7e0 [ 51.528595][ T3603] ? netlink_attachskb+0x880/0x880 [ 51.533719][ T3603] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.540068][ T3603] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.546414][ T3603] ? __phys_addr_symbol+0x2c/0x70 [ 51.551593][ T3603] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 51.557454][ T3603] ? __check_object_size+0x16c/0x4f0 [ 51.562833][ T3603] netlink_sendmsg+0x904/0xe00 [ 51.567627][ T3603] ? netlink_unicast+0x7e0/0x7e0 [ 51.572680][ T3603] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 51.578948][ T3603] ? netlink_unicast+0x7e0/0x7e0 [ 51.583920][ T3603] sock_sendmsg+0xcf/0x120 [ 51.588362][ T3603] __sys_sendto+0x21c/0x320 [ 51.592971][ T3603] ? __ia32_sys_getpeername+0xb0/0xb0 [ 51.598452][ T3603] ? lockdep_hardirqs_on+0x79/0x100 [ 51.603692][ T3603] ? __context_tracking_exit+0xb8/0xe0 [ 51.609168][ T3603] ? lock_downgrade+0x6e0/0x6e0 [ 51.614047][ T3603] __x64_sys_sendto+0xdd/0x1b0 [ 51.619612][ T3603] ? lockdep_hardirqs_on+0x79/0x100 [ 51.624814][ T3603] ? syscall_enter_from_user_mode+0x21/0x70 [ 51.630711][ T3603] do_syscall_64+0x35/0xb0 [ 51.635126][ T3603] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.641027][ T3603] RIP: 0033:0x7fbce74b0e1c [ 51.645598][ 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 [ 51.665200][ T3603] RSP: 002b:00007ffc417e08c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 51.673610][ T3603] RAX: ffffffffffffffda RBX: 00007fbce8549320 RCX: 00007fbce74b0e1c [ 51.681589][ T3603] RDX: 0000000000000048 RSI: 00007fbce8549370 RDI: 0000000000000003 [ 51.689578][ T3603] RBP: 0000000000000000 R08: 00007ffc417e0914 R09: 000000000000000c [ 51.697546][ T3603] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 51.705509][ T3603] R13: 00007fbce8549370 R14: 0000000000000003 R15: 0000000000000000 [ 51.713613][ T3603] [ 51.722772][ T3603] device hsr_slave_0 entered promiscuous mode [ 51.730055][ T3603] device hsr_slave_1 entered promiscuous mode [ 51.809860][ T3603] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 51.820004][ T3603] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 51.828919][ T3603] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 51.838198][ T3603] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 51.858832][ T3603] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.866049][ T3603] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.873841][ T3603] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.880947][ T3603] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.924792][ T3603] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.940117][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.954360][ T3613] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.966130][ T3613] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.974428][ T3613] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.986784][ T3603] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.997389][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.006007][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.014637][ T6] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.021707][ T6] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.032949][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.042409][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.052707][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.060051][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.084130][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.092920][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.101789][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.110803][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.119375][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.128524][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.137147][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.145869][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.154834][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.168096][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.176463][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.187978][ T3603] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.207785][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.215649][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.229596][ T3603] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 52.336826][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 52.346322][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.364700][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 52.373398][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.384936][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.392730][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.401492][ T3603] device veth0_vlan entered promiscuous mode [ 52.412791][ T3603] device veth1_vlan entered promiscuous mode [ 52.430913][ T3603] device veth0_macvtap entered promiscuous mode [ 52.438712][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.447667][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.456263][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 52.465251][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.474185][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 52.486753][ T3603] device veth1_macvtap entered promiscuous mode [ 52.501889][ T3603] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.509640][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 52.517963][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 52.527219][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.539414][ T3603] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.548623][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 52.557194][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.567246][ T3603] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.576276][ T3603] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.586104][ T3603] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.595266][ T3603] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.656597][ T91] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.673227][ T91] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.683333][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 52.695866][ T46] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.703833][ T46] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.715840][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/14 07:15:56 building call list... [ 52.925095][ T22] Bluetooth: hci0: command 0x0409 tx timeout [ 53.058941][ T91] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.150435][ T3592] can: request_module (can-proto-0) failed. [ 55.179334][ T3592] can: request_module (can-proto-0) failed. [ 55.202072][ T3592] can: request_module (can-proto-0) failed. executing program [ 55.284738][ T91] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0