DUID 00:04:00:dd:10:da:7f:85:b5:90:fb:fd:97:ac:66:d6:08:36 forked to background, child pid 3174 [ 31.162628][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.178960][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.59' (ECDSA) to the list of known hosts. 2022/02/11 04:17:35 fuzzer started 2022/02/11 04:17:35 connecting to host at 10.128.0.169:40291 2022/02/11 04:17:35 checking machine... 2022/02/11 04:17:35 checking revisions... 2022/02/11 04:17:35 testing simple program... syzkaller login: [ 48.373706][ T3596] cgroup: Unknown subsys name 'net' [ 48.500997][ T3596] cgroup: Unknown subsys name 'rlimit' [ 49.764085][ T3599] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 49.772496][ T3599] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 49.780974][ T3599] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 49.788932][ T3599] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 49.796527][ T3599] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 49.804164][ T3599] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 49.899641][ T3598] chnl_net:caif_netlink_parms(): no params data found [ 49.943975][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.951886][ T3598] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.960302][ T3598] device bridge_slave_0 entered promiscuous mode [ 49.970350][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.977988][ T3598] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.986377][ T3598] device bridge_slave_1 entered promiscuous mode [ 50.009176][ T3598] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 50.020550][ T3598] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 50.044685][ T3598] team0: Port device team_slave_0 added [ 50.052068][ T3598] team0: Port device team_slave_1 added [ 50.070163][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 50.077394][ 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. [ 50.103445][ T3598] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 50.116421][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 50.123870][ 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. [ 50.150062][ T3598] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 50.174849][ T3598] [ 50.177337][ T3598] ============================= [ 50.182186][ T3598] WARNING: suspicious RCU usage [ 50.187119][ T3598] 5.17.0-rc3-syzkaller-00892-g5b91c5cc0e7b #0 Not tainted [ 50.194313][ T3598] ----------------------------- [ 50.199150][ T3598] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 50.207361][ T3598] [ 50.207361][ T3598] other info that might help us debug this: [ 50.207361][ T3598] [ 50.217654][ T3598] [ 50.217654][ T3598] rcu_scheduler_active = 2, debug_locks = 1 [ 50.225862][ T3598] 2 locks held by syz-executor.0/3598: [ 50.231327][ T3598] #0: ffffffff8d32cb68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 50.240833][ T3598] #1: ffff88801cb655f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 50.251208][ T3598] [ 50.251208][ T3598] stack backtrace: [ 50.257149][ T3598] CPU: 0 PID: 3598 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller-00892-g5b91c5cc0e7b #0 [ 50.268032][ T3598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.278257][ T3598] Call Trace: [ 50.281547][ T3598] [ 50.284477][ T3598] dump_stack_lvl+0xcd/0x134 [ 50.289074][ T3598] hsr_node_get_first+0x9b/0xb0 [ 50.294011][ T3598] hsr_create_self_node+0x22d/0x650 [ 50.299215][ T3598] hsr_dev_finalize+0x2c1/0x7d0 [ 50.304069][ T3598] hsr_newlink+0x315/0x730 [ 50.308498][ T3598] ? hsr_dellink+0x130/0x130 [ 50.313086][ T3598] ? rtnl_create_link+0x7e8/0xc00 [ 50.318114][ T3598] ? hsr_dellink+0x130/0x130 [ 50.322723][ T3598] __rtnl_newlink+0x107c/0x1760 [ 50.327596][ T3598] ? rtnl_setlink+0x3c0/0x3c0 [ 50.333299][ T3598] ? is_bpf_text_address+0x77/0x170 [ 50.338585][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 50.343620][ T3598] ? unwind_next_frame+0xee1/0x1ce0 [ 50.349165][ T3598] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.355318][ T3598] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 50.361166][ T3598] ? is_bpf_text_address+0x99/0x170 [ 50.366453][ T3598] ? kernel_text_address+0x39/0x80 [ 50.372000][ T3598] ? __kernel_text_address+0x9/0x30 [ 50.377200][ T3598] ? unwind_get_return_address+0x51/0x90 [ 50.383179][ T3598] ? create_prof_cpu_mask+0x20/0x20 [ 50.388380][ T3598] ? arch_stack_walk+0x93/0xe0 [ 50.393202][ T3598] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 50.398680][ T3598] ? rcu_read_lock_sched_held+0x3a/0x70 [ 50.404412][ T3598] rtnl_newlink+0x64/0xa0 [ 50.408741][ T3598] ? __rtnl_newlink+0x1760/0x1760 [ 50.413862][ T3598] rtnetlink_rcv_msg+0x413/0xb80 [ 50.418804][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 50.423426][ T3598] netlink_rcv_skb+0x153/0x420 [ 50.428189][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 50.432688][ T3598] ? netlink_ack+0xa60/0xa60 [ 50.437272][ T3598] ? netlink_deliver_tap+0x1a2/0xc40 [ 50.442744][ T3598] ? netlink_deliver_tap+0x1b1/0xc40 [ 50.448107][ T3598] netlink_unicast+0x539/0x7e0 [ 50.452961][ T3598] ? netlink_attachskb+0x880/0x880 [ 50.458068][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.464314][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.470555][ T3598] ? __phys_addr_symbol+0x2c/0x70 [ 50.475675][ T3598] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 50.481482][ T3598] ? __check_object_size+0x16e/0x310 [ 50.486774][ T3598] netlink_sendmsg+0x904/0xe00 [ 50.491545][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 50.496488][ T3598] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 50.502833][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 50.507772][ T3598] sock_sendmsg+0xcf/0x120 [ 50.512194][ T3598] __sys_sendto+0x21c/0x320 [ 50.516700][ T3598] ? __ia32_sys_getpeername+0xb0/0xb0 [ 50.522076][ T3598] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 50.528079][ T3598] ? __context_tracking_exit+0xb8/0xe0 [ 50.533547][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 50.538421][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 50.543393][ T3598] __x64_sys_sendto+0xdd/0x1b0 [ 50.548177][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 50.553394][ T3598] ? syscall_enter_from_user_mode+0x21/0x70 [ 50.559387][ T3598] do_syscall_64+0x35/0xb0 [ 50.563815][ T3598] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.569880][ T3598] RIP: 0033:0x7f36ceb7de1c [ 50.574292][ 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 [ 50.593974][ T3598] RSP: 002b:00007fff2c970a70 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 50.602396][ T3598] RAX: ffffffffffffffda RBX: 00007f36cfc16320 RCX: 00007f36ceb7de1c [ 50.610363][ T3598] RDX: 0000000000000048 RSI: 00007f36cfc16370 RDI: 0000000000000003 [ 50.618330][ T3598] RBP: 0000000000000000 R08: 00007fff2c970ac4 R09: 000000000000000c [ 50.626296][ T3598] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 50.634260][ T3598] R13: 00007f36cfc16370 R14: 0000000000000003 R15: 0000000000000000 [ 50.642327][ T3598] [ 50.651500][ T3598] device hsr_slave_0 entered promiscuous mode [ 50.659812][ T3598] device hsr_slave_1 entered promiscuous mode [ 50.751562][ T3598] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 50.763006][ T3598] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 50.772925][ T3598] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.782775][ T3598] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.805149][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.812448][ T3598] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.820655][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.827787][ T3598] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.873846][ T3598] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.889353][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.901633][ T6] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.913731][ T6] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.924136][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 50.941361][ T3598] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.965330][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 50.975449][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 50.986390][ T6] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.993563][ T6] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.017760][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 51.027594][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.036489][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.043676][ T3607] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.052032][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 51.061869][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 51.083001][ T3598] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 51.095569][ T3598] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 51.108578][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 51.119381][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.128851][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 51.138470][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.147210][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 51.155981][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 51.165491][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 51.174685][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.189352][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.197422][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.217977][ T3598] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.226542][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 51.235275][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 51.375246][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 51.385310][ T3260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 51.399262][ T3598] device veth0_vlan entered promiscuous mode [ 51.407110][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 51.415572][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 51.426198][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 51.435263][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 51.446114][ T3598] device veth1_vlan entered promiscuous mode [ 51.465498][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 51.473840][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 51.481967][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 51.490730][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 51.502113][ T3598] device veth0_macvtap entered promiscuous mode [ 51.513116][ T3598] device veth1_macvtap entered promiscuous mode [ 51.529649][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 51.539956][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 51.548744][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 51.557832][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 51.566852][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 51.578412][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 51.587440][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 51.596369][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 51.609481][ T3598] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.618595][ T3598] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.628397][ T3598] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.638405][ T3598] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.705563][ T990] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.715342][ T990] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.727319][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 51.747305][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.756851][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.767030][ T3616] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/11 04:17:38 building call list... [ 51.835048][ T3616] Bluetooth: hci0: command 0x0409 tx timeout [ 52.018076][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 53.960132][ T3593] can: request_module (can-proto-0) failed. [ 53.986249][ T3593] can: request_module (can-proto-0) failed. [ 54.008103][ T3593] can: request_module (can-proto-0) failed. executing program [ 54.286590][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0