DUID 00:04:ac:d3:e9:6f:d6:cf:30:00:cb:75:86:98:6a:d5:8e:9b forked to background, child pid 3173 [ 29.228569][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.240382][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.33' (ECDSA) to the list of known hosts. 2022/02/17 01:24:05 fuzzer started 2022/02/17 01:24:06 connecting to host at 10.128.0.169:44857 2022/02/17 01:24:06 checking machine... 2022/02/17 01:24:06 checking revisions... 2022/02/17 01:24:06 testing simple program... syzkaller login: [ 51.165847][ T3595] cgroup: Unknown subsys name 'net' [ 51.328048][ T3595] cgroup: Unknown subsys name 'rlimit' [ 52.511929][ T3598] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.519967][ T3598] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.527863][ T3601] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.536121][ T3601] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.544126][ T3601] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.551368][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.641209][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 52.685694][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.693507][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.701478][ T3597] device bridge_slave_0 entered promiscuous mode [ 52.710911][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.718178][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.726773][ T3597] device bridge_slave_1 entered promiscuous mode [ 52.747930][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.758928][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.782415][ T3597] team0: Port device team_slave_0 added [ 52.789699][ T3597] team0: Port device team_slave_1 added [ 52.807031][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.814216][ T3597] 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. [ 52.840250][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.853613][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.860564][ T3597] 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. [ 52.887000][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.911254][ T3597] [ 52.913721][ T3597] ============================= [ 52.918558][ T3597] WARNING: suspicious RCU usage [ 52.923448][ T3597] 5.17.0-rc2-syzkaller-00971-g9b6eb0478dfa #0 Not tainted [ 52.930560][ T3597] ----------------------------- [ 52.935439][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 52.943617][ T3597] [ 52.943617][ T3597] other info that might help us debug this: [ 52.943617][ T3597] [ 52.953890][ T3597] [ 52.953890][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 52.961983][ T3597] 2 locks held by syz-executor.0/3597: [ 52.967623][ T3597] #0: ffffffff8d32caa8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.977126][ T3597] #1: ffff888072f755f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.987334][ T3597] [ 52.987334][ T3597] stack backtrace: [ 52.993380][ T3597] CPU: 1 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00971-g9b6eb0478dfa #0 [ 53.003801][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.013859][ T3597] Call Trace: [ 53.017133][ T3597] [ 53.020061][ T3597] dump_stack_lvl+0xcd/0x134 [ 53.024675][ T3597] hsr_node_get_first+0x9b/0xb0 [ 53.029541][ T3597] hsr_create_self_node+0x22d/0x650 [ 53.034749][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 53.039614][ T3597] hsr_newlink+0x315/0x730 [ 53.044035][ T3597] ? hsr_dellink+0x130/0x130 [ 53.048625][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 53.053655][ T3597] ? hsr_dellink+0x130/0x130 [ 53.058252][ T3597] __rtnl_newlink+0x107c/0x1760 [ 53.063160][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 53.067863][ T3597] ? is_bpf_text_address+0x77/0x170 [ 53.073110][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.078007][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 53.083228][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.089336][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.095085][ T3597] ? is_bpf_text_address+0x99/0x170 [ 53.100313][ T3597] ? kernel_text_address+0x39/0x80 [ 53.105443][ T3597] ? __kernel_text_address+0x9/0x30 [ 53.110654][ T3597] ? unwind_get_return_address+0x51/0x90 [ 53.116296][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 53.121508][ T3597] ? arch_stack_walk+0x93/0xe0 [ 53.126338][ T3597] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 53.131830][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.137389][ T3597] rtnl_newlink+0x64/0xa0 [ 53.141720][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 53.146756][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 53.151702][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 53.156221][ T3597] netlink_rcv_skb+0x153/0x420 [ 53.160989][ T3597] ? rtnl_newlink+0xa0/0xa0 [ 53.165499][ T3597] ? netlink_ack+0xa60/0xa60 [ 53.170103][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.175445][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.180754][ T3597] netlink_unicast+0x539/0x7e0 [ 53.185542][ T3597] ? netlink_attachskb+0x880/0x880 [ 53.190670][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.196925][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.203174][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 53.208210][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.214027][ T3597] ? __check_object_size+0x16e/0x310 [ 53.219319][ T3597] netlink_sendmsg+0x904/0xe00 [ 53.224090][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 53.229038][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.235379][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 53.240319][ T3597] sock_sendmsg+0xcf/0x120 [ 53.244741][ T3597] __sys_sendto+0x21c/0x320 [ 53.249251][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.254663][ T3597] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 53.261017][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 53.266483][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.271339][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 53.276213][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 53.280982][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 53.286185][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.292092][ T3597] do_syscall_64+0x35/0xb0 [ 53.296515][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.302533][ T3597] RIP: 0033:0x7fa89791fe1c [ 53.306961][ T3597] 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 [ 53.326925][ T3597] RSP: 002b:00007fffc7c5f500 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.335359][ T3597] RAX: ffffffffffffffda RBX: 00007fa8989b8320 RCX: 00007fa89791fe1c [ 53.343344][ T3597] RDX: 0000000000000048 RSI: 00007fa8989b8370 RDI: 0000000000000003 [ 53.351324][ T3597] RBP: 0000000000000000 R08: 00007fffc7c5f554 R09: 000000000000000c [ 53.359317][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.367289][ T3597] R13: 00007fa8989b8370 R14: 0000000000000003 R15: 0000000000000000 [ 53.375277][ T3597] [ 53.383316][ T3597] device hsr_slave_0 entered promiscuous mode [ 53.390628][ T3597] device hsr_slave_1 entered promiscuous mode [ 53.471500][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.482358][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.491273][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.500781][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.522021][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.529195][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.537164][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.544259][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.590350][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.603809][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.615113][ T25] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.624363][ T25] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.634000][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.648347][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.657921][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.667751][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.676697][ T6] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.683812][ T6] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.711757][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.720497][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.729187][ T25] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.736287][ T25] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.744410][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.753558][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.762554][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.771366][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.779913][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.788522][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.797454][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.808010][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.817144][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.828700][ T142] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.837304][ T142] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.848913][ T3597] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.870671][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.879505][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 53.887926][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 54.053390][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.063278][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.081047][ T3597] device veth0_vlan entered promiscuous mode [ 54.090439][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.098991][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.108472][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.116305][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.127462][ T3597] device veth1_vlan entered promiscuous mode [ 54.145289][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.154242][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.162636][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.171261][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.184511][ T3597] device veth0_macvtap entered promiscuous mode [ 54.194472][ T3597] device veth1_macvtap entered promiscuous mode [ 54.209069][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.216920][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.225191][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.233273][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.242548][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.255141][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.263281][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.272443][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.284624][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.294749][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.304184][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.313710][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.374455][ T1006] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.387097][ T1006] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.396975][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.413926][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.423396][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.432974][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/17 01:24:09 building call list... [ 54.583562][ T6] Bluetooth: hci0: command 0x0409 tx timeout [ 56.781495][ T3589] can: request_module (can-proto-0) failed. [ 56.804227][ T3589] can: request_module (can-proto-0) failed. [ 56.830321][ T3589] can: request_module (can-proto-0) failed. executing program [ 57.457421][ T3597] syz-executor.0 (3597) used greatest stack depth: 22896 bytes left [ 57.490628][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0