DUID 00:04:1b:66:36:25:cc:bb:2d:eb:42:73:ce:96:f3:b7:d0:c0 forked to background, child pid 3174 [ 30.678294][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.689654][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.234' (ECDSA) to the list of known hosts. 2022/02/15 17:17:10 fuzzer started 2022/02/15 17:17:11 connecting to host at 10.128.0.169:35279 2022/02/15 17:17:11 checking machine... 2022/02/15 17:17:11 checking revisions... 2022/02/15 17:17:11 testing simple program... syzkaller login: [ 51.783273][ T3596] cgroup: Unknown subsys name 'net' [ 51.919210][ T3596] cgroup: Unknown subsys name 'rlimit' [ 53.134169][ T3602] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 53.143665][ T3602] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 53.151958][ T3602] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 53.160591][ T3602] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 53.169376][ T3602] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 53.177205][ T3602] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 53.284723][ T3598] chnl_net:caif_netlink_parms(): no params data found [ 53.334890][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.343028][ T3598] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.351359][ T3598] device bridge_slave_0 entered promiscuous mode [ 53.362233][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.369920][ T3598] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.378178][ T3598] device bridge_slave_1 entered promiscuous mode [ 53.402540][ T3598] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.414221][ T3598] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.441590][ T3598] team0: Port device team_slave_0 added [ 53.450095][ T3598] team0: Port device team_slave_1 added [ 53.470245][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.477281][ 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. [ 53.504284][ T3598] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.517912][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.525755][ 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. [ 53.552800][ T3598] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.578767][ T3598] [ 53.581648][ T3598] ============================= [ 53.586902][ T3598] WARNING: suspicious RCU usage [ 53.591778][ T3598] 5.17.0-rc2-syzkaller-00956-gedc21dc909c6 #0 Not tainted [ 53.599105][ T3598] ----------------------------- [ 53.604499][ T3598] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 53.613103][ T3598] [ 53.613103][ T3598] other info that might help us debug this: [ 53.613103][ T3598] [ 53.623550][ T3598] [ 53.623550][ T3598] rcu_scheduler_active = 2, debug_locks = 1 [ 53.631918][ T3598] 2 locks held by syz-executor.0/3598: [ 53.637473][ T3598] #0: ffffffff8d32caa8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 53.647122][ T3598] #1: ffff888074d795f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 53.657490][ T3598] [ 53.657490][ T3598] stack backtrace: [ 53.663623][ T3598] CPU: 0 PID: 3598 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00956-gedc21dc909c6 #0 [ 53.674199][ T3598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.684265][ T3598] Call Trace: [ 53.687546][ T3598] [ 53.690488][ T3598] dump_stack_lvl+0xcd/0x134 [ 53.695201][ T3598] hsr_node_get_first+0x9b/0xb0 [ 53.700079][ T3598] hsr_create_self_node+0x22d/0x650 [ 53.705494][ T3598] hsr_dev_finalize+0x2c1/0x7d0 [ 53.710353][ T3598] hsr_newlink+0x315/0x730 [ 53.714763][ T3598] ? hsr_dellink+0x130/0x130 [ 53.719470][ T3598] ? rtnl_create_link+0x7e8/0xc00 [ 53.724686][ T3598] ? hsr_dellink+0x130/0x130 [ 53.729297][ T3598] __rtnl_newlink+0x107c/0x1760 [ 53.734352][ T3598] ? rtnl_setlink+0x3c0/0x3c0 [ 53.739057][ T3598] ? is_bpf_text_address+0x77/0x170 [ 53.744252][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.749212][ T3598] ? unwind_next_frame+0xee1/0x1ce0 [ 53.754711][ T3598] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.761175][ T3598] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.767047][ T3598] ? is_bpf_text_address+0x99/0x170 [ 53.772385][ T3598] ? kernel_text_address+0x39/0x80 [ 53.777621][ T3598] ? __kernel_text_address+0x9/0x30 [ 53.782844][ T3598] ? unwind_get_return_address+0x51/0x90 [ 53.788614][ T3598] ? create_prof_cpu_mask+0x20/0x20 [ 53.794124][ T3598] ? arch_stack_walk+0x93/0xe0 [ 53.799045][ T3598] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 53.804798][ T3598] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.810697][ T3598] rtnl_newlink+0x64/0xa0 [ 53.815041][ T3598] ? __rtnl_newlink+0x1760/0x1760 [ 53.820065][ T3598] rtnetlink_rcv_msg+0x413/0xb80 [ 53.825015][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 53.829529][ T3598] netlink_rcv_skb+0x153/0x420 [ 53.834375][ T3598] ? rtnl_newlink+0xa0/0xa0 [ 53.838900][ T3598] ? netlink_ack+0xa60/0xa60 [ 53.843507][ T3598] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.848798][ T3598] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.854088][ T3598] netlink_unicast+0x539/0x7e0 [ 53.859022][ T3598] ? netlink_attachskb+0x880/0x880 [ 53.864239][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.870485][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.876723][ T3598] ? __phys_addr_symbol+0x2c/0x70 [ 53.881753][ T3598] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.887463][ T3598] ? __check_object_size+0x16e/0x310 [ 53.892828][ T3598] netlink_sendmsg+0x904/0xe00 [ 53.897586][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 53.902524][ T3598] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.908765][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 53.913718][ T3598] sock_sendmsg+0xcf/0x120 [ 53.918153][ T3598] __sys_sendto+0x21c/0x320 [ 53.922832][ T3598] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.928319][ T3598] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 53.934316][ T3598] ? __context_tracking_exit+0xb8/0xe0 [ 53.939778][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.944613][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 53.949466][ T3598] __x64_sys_sendto+0xdd/0x1b0 [ 53.954218][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 53.959497][ T3598] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.965389][ T3598] do_syscall_64+0x35/0xb0 [ 53.969794][ T3598] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.975770][ T3598] RIP: 0033:0x7fddd4fbfe1c [ 53.980205][ 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 [ 53.999913][ T3598] RSP: 002b:00007fff81139a10 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 54.008433][ T3598] RAX: ffffffffffffffda RBX: 00007fddd6058320 RCX: 00007fddd4fbfe1c [ 54.016409][ T3598] RDX: 0000000000000048 RSI: 00007fddd6058370 RDI: 0000000000000003 [ 54.024387][ T3598] RBP: 0000000000000000 R08: 00007fff81139a64 R09: 000000000000000c [ 54.032352][ T3598] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 54.040397][ T3598] R13: 00007fddd6058370 R14: 0000000000000003 R15: 0000000000000000 [ 54.048462][ T3598] [ 54.055385][ T3598] device hsr_slave_0 entered promiscuous mode [ 54.063283][ T3598] device hsr_slave_1 entered promiscuous mode [ 54.143377][ T3598] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 54.154293][ T3598] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 54.164098][ T3598] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 54.174480][ T3598] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 54.196507][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.203909][ T3598] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.211760][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.218930][ T3598] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.266368][ T3598] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.279589][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 54.290937][ T21] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.299684][ T21] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.308593][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 54.321115][ T3598] 8021q: adding VLAN 0 to HW filter on device team0 [ 54.340421][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 54.349941][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 54.358732][ T6] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.365997][ T6] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.375182][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 54.383781][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.392237][ T6] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.399364][ T6] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.423504][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 54.432972][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 54.441648][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 54.451579][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.460234][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.469558][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.478187][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 54.486918][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.495341][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.503726][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.515335][ T3598] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 54.524412][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.543240][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.550686][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 54.561610][ T3598] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.675977][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.684913][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.695648][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.704606][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.714190][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.722000][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.732104][ T3598] device veth0_vlan entered promiscuous mode [ 54.744372][ T3598] device veth1_vlan entered promiscuous mode [ 54.763725][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.772007][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.780458][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.789649][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.801672][ T3598] device veth0_macvtap entered promiscuous mode [ 54.811979][ T3598] device veth1_macvtap entered promiscuous mode [ 54.827664][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.835319][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.844777][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.853754][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.863705][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.875999][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.885595][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.894748][ T3610] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.905414][ T3598] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.915883][ T3598] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.925051][ T3598] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.933872][ T3598] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.999820][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.011326][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.025991][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 55.037238][ T980] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.045619][ T980] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.055122][ T1133] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/15 17:17:14 building call list... [ 55.203770][ T6] Bluetooth: hci0: command 0x0409 tx timeout [ 57.472031][ T3591] can: request_module (can-proto-0) failed. [ 57.494725][ T3591] can: request_module (can-proto-0) failed. [ 57.515298][ T3591] can: request_module (can-proto-0) failed. executing program [ 58.157913][ T980] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0