forked to background, child pid 3176 no interfaces have a carrier [ 26.835573][ T3177] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.845989][ T3177] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.198' (ECDSA) to the list of known hosts. 2022/02/22 04:35:26 fuzzer started 2022/02/22 04:35:27 connecting to host at 10.128.0.169:34637 2022/02/22 04:35:27 checking machine... 2022/02/22 04:35:27 checking revisions... 2022/02/22 04:35:27 testing simple program... syzkaller login: [ 43.608820][ T3597] cgroup: Unknown subsys name 'net' [ 43.738824][ T3597] cgroup: Unknown subsys name 'rlimit' [ 44.995756][ T3601] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 45.003820][ T3601] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 45.011205][ T3601] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 45.019626][ T3603] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 45.027257][ T3603] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 45.035082][ T3603] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 45.119835][ T3599] chnl_net:caif_netlink_parms(): no params data found [ 45.161568][ T3599] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.169182][ T3599] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.177364][ T3599] device bridge_slave_0 entered promiscuous mode [ 45.186381][ T3599] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.193538][ T3599] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.201350][ T3599] device bridge_slave_1 entered promiscuous mode [ 45.222244][ T3599] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 45.234210][ T3599] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 45.257709][ T3599] team0: Port device team_slave_0 added [ 45.265447][ T3599] team0: Port device team_slave_1 added [ 45.283272][ T3599] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 45.290365][ 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. [ 45.316421][ T3599] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 45.329352][ T3599] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 45.336347][ 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. [ 45.362279][ T3599] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 45.386006][ T3599] [ 45.388443][ T3599] ============================= [ 45.393329][ T3599] WARNING: suspicious RCU usage [ 45.398168][ T3599] 5.17.0-rc4-syzkaller-01353-g13c6a37d409d #0 Not tainted [ 45.405310][ T3599] ----------------------------- [ 45.410147][ T3599] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 45.418330][ T3599] [ 45.418330][ T3599] other info that might help us debug this: [ 45.418330][ T3599] [ 45.428609][ T3599] [ 45.428609][ T3599] rcu_scheduler_active = 2, debug_locks = 1 [ 45.438125][ T3599] 2 locks held by syz-executor.0/3599: [ 45.443635][ T3599] #0: ffffffff8d32f868 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 45.453127][ T3599] #1: ffff8880776915f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 45.463281][ T3599] [ 45.463281][ T3599] stack backtrace: [ 45.469174][ T3599] CPU: 1 PID: 3599 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01353-g13c6a37d409d #0 [ 45.479579][ T3599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.489623][ T3599] Call Trace: [ 45.492892][ T3599] [ 45.495811][ T3599] dump_stack_lvl+0xcd/0x134 [ 45.500402][ T3599] hsr_node_get_first+0x9b/0xb0 [ 45.505245][ T3599] hsr_create_self_node+0x22d/0x650 [ 45.510438][ T3599] hsr_dev_finalize+0x2c1/0x7d0 [ 45.515457][ T3599] hsr_newlink+0x315/0x730 [ 45.519868][ T3599] ? hsr_dellink+0x130/0x130 [ 45.524448][ T3599] ? rtnl_create_link+0x7e8/0xc00 [ 45.529469][ T3599] ? hsr_dellink+0x130/0x130 [ 45.534062][ T3599] __rtnl_newlink+0x107c/0x1760 [ 45.538914][ T3599] ? rtnl_setlink+0x3c0/0x3c0 [ 45.543593][ T3599] ? is_bpf_text_address+0x77/0x170 [ 45.548788][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 45.553636][ T3599] ? unwind_next_frame+0xee1/0x1ce0 [ 45.558827][ T3599] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 45.564884][ T3599] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 45.570603][ T3599] ? is_bpf_text_address+0x99/0x170 [ 45.575796][ T3599] ? kernel_text_address+0x39/0x80 [ 45.580903][ T3599] ? __kernel_text_address+0x9/0x30 [ 45.586093][ T3599] ? unwind_get_return_address+0x51/0x90 [ 45.591717][ T3599] ? create_prof_cpu_mask+0x20/0x20 [ 45.596911][ T3599] ? arch_stack_walk+0x93/0xe0 [ 45.601710][ T3599] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 45.607174][ T3599] ? rcu_read_lock_sched_held+0x3a/0x70 [ 45.612722][ T3599] rtnl_newlink+0x64/0xa0 [ 45.617051][ T3599] ? __rtnl_newlink+0x1760/0x1760 [ 45.622067][ T3599] rtnetlink_rcv_msg+0x413/0xb80 [ 45.627000][ T3599] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 45.631783][ T3599] netlink_rcv_skb+0x153/0x420 [ 45.636544][ T3599] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 45.641305][ T3599] ? netlink_ack+0xa60/0xa60 [ 45.645884][ T3599] ? netlink_deliver_tap+0x1a2/0xc40 [ 45.651167][ T3599] ? netlink_deliver_tap+0x1b1/0xc40 [ 45.656449][ T3599] netlink_unicast+0x539/0x7e0 [ 45.661212][ T3599] ? netlink_attachskb+0x880/0x880 [ 45.666313][ T3599] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 45.672556][ T3599] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 45.678793][ T3599] ? __phys_addr_symbol+0x2c/0x70 [ 45.683811][ T3599] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 45.689526][ T3599] ? __check_object_size+0x16e/0x310 [ 45.694813][ T3599] netlink_sendmsg+0x904/0xe00 [ 45.699594][ T3599] ? netlink_unicast+0x7e0/0x7e0 [ 45.704546][ T3599] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 45.710788][ T3599] ? netlink_unicast+0x7e0/0x7e0 [ 45.715720][ T3599] sock_sendmsg+0xcf/0x120 [ 45.720132][ T3599] __sys_sendto+0x21c/0x320 [ 45.724633][ T3599] ? __ia32_sys_getpeername+0xb0/0xb0 [ 45.729993][ T3599] ? lockdep_hardirqs_on+0x79/0x100 [ 45.735204][ T3599] ? __context_tracking_exit+0xb8/0xe0 [ 45.740660][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 45.745513][ T3599] __x64_sys_sendto+0xdd/0x1b0 [ 45.750266][ T3599] ? lockdep_hardirqs_on+0x79/0x100 [ 45.755466][ T3599] ? syscall_enter_from_user_mode+0x21/0x70 [ 45.761350][ T3599] do_syscall_64+0x35/0xb0 [ 45.765759][ T3599] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 45.771648][ T3599] RIP: 0033:0x7f9f5903ce1c [ 45.776057][ 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 [ 45.795653][ T3599] RSP: 002b:00007ffe99178790 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 45.804058][ T3599] RAX: ffffffffffffffda RBX: 00007f9f5a0d5320 RCX: 00007f9f5903ce1c [ 45.812019][ T3599] RDX: 0000000000000048 RSI: 00007f9f5a0d5370 RDI: 0000000000000003 [ 45.819979][ T3599] RBP: 0000000000000000 R08: 00007ffe991787e4 R09: 000000000000000c [ 45.827946][ T3599] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 45.835907][ T3599] R13: 00007f9f5a0d5370 R14: 0000000000000003 R15: 0000000000000000 [ 45.843883][ T3599] [ 45.852526][ T3599] device hsr_slave_0 entered promiscuous mode [ 45.859688][ T3599] device hsr_slave_1 entered promiscuous mode [ 45.937219][ T3599] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 45.947855][ T3599] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 45.957774][ T3599] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 45.967331][ T3599] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 45.989418][ T3599] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.996805][ T3599] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.004819][ T3599] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.011884][ T3599] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.056812][ T3599] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.069550][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 46.081085][ T39] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.090214][ T39] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.099637][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 46.114326][ T3599] 8021q: adding VLAN 0 to HW filter on device team0 [ 46.124736][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 46.134249][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 46.143482][ T6] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.150578][ T6] bridge0: port 1(bridge_slave_0) entered forwarding state [ 46.176903][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 46.185939][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 46.194881][ T1132] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.201953][ T1132] bridge0: port 2(bridge_slave_1) entered forwarding state [ 46.209872][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 46.218790][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 46.227488][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 46.236332][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 46.244955][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 46.254346][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 46.263416][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 46.271747][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 46.280569][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 46.289287][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 46.301712][ T3599] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 46.311615][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 46.329140][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 46.336941][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 46.349509][ T3599] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 46.457091][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 46.467270][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 46.488443][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 46.497219][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 46.507584][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 46.515638][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 46.525201][ T3599] device veth0_vlan entered promiscuous mode [ 46.536435][ T3599] device veth1_vlan entered promiscuous mode [ 46.555834][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 46.564449][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 46.572941][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 46.581419][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 46.592992][ T3599] device veth0_macvtap entered promiscuous mode [ 46.601894][ T3599] device veth1_macvtap entered promiscuous mode [ 46.619649][ T3599] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 46.627758][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 46.637267][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 46.646462][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 46.655897][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 46.668119][ T3599] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 46.676886][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 46.686460][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 46.698830][ T3599] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 46.708088][ T3599] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 46.717161][ T3599] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 46.726237][ T3599] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 46.788287][ T44] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 46.804828][ T44] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 46.816408][ T947] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 46.824688][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 46.824892][ T947] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 46.840509][ T917] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/22 04:35:30 building call list... [ 47.078037][ T947] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 49.193128][ T3588] can: request_module (can-proto-0) failed. [ 49.216128][ T3588] can: request_module (can-proto-0) failed. [ 49.236664][ T3588] can: request_module (can-proto-0) failed. executing program [ 49.910695][ T947] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0