DUID 00:04:44:5a:cc:c9:49:7a:03:7b:0e:36:9f:1a:c7:8d:92:7d forked to background, child pid 3173 [ 27.673670][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.684291][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.78' (ECDSA) to the list of known hosts. 2022/02/19 06:08:02 fuzzer started 2022/02/19 06:08:02 connecting to host at 10.128.0.169:41071 2022/02/19 06:08:02 checking machine... 2022/02/19 06:08:02 checking revisions... 2022/02/19 06:08:03 testing simple program... syzkaller login: [ 49.816780][ T3595] cgroup: Unknown subsys name 'net' [ 49.958037][ T3595] cgroup: Unknown subsys name 'rlimit' [ 51.176127][ T3599] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.185370][ T3599] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.193468][ T3599] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.202598][ T3599] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.210398][ T3599] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.218473][ T3599] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.310994][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 51.356639][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.364434][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.372478][ T3597] device bridge_slave_0 entered promiscuous mode [ 51.381887][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.389032][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.397229][ T3597] device bridge_slave_1 entered promiscuous mode [ 51.418671][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.430024][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.453802][ T3597] team0: Port device team_slave_0 added [ 51.461068][ T3597] team0: Port device team_slave_1 added [ 51.480131][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.487418][ 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. [ 51.513768][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.527129][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.535205][ 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. [ 51.563001][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.586949][ T3597] [ 51.589391][ T3597] ============================= [ 51.594458][ T3597] WARNING: suspicious RCU usage [ 51.599537][ T3597] 5.17.0-rc4-syzkaller-01358-gbbcf340d9dc3 #0 Not tainted [ 51.606744][ T3597] ----------------------------- [ 51.611641][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 51.620058][ T3597] [ 51.620058][ T3597] other info that might help us debug this: [ 51.620058][ T3597] [ 51.631094][ T3597] [ 51.631094][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 51.639216][ T3597] 2 locks held by syz-executor.0/3597: [ 51.644802][ T3597] #0: ffffffff8d32f868 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 51.654399][ T3597] #1: ffff888073b195f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 51.664559][ T3597] [ 51.664559][ T3597] stack backtrace: [ 51.670550][ T3597] CPU: 1 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01358-gbbcf340d9dc3 #0 [ 51.680949][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.691212][ T3597] Call Trace: [ 51.694481][ T3597] [ 51.697399][ T3597] dump_stack_lvl+0xcd/0x134 [ 51.702188][ T3597] hsr_node_get_first+0x9b/0xb0 [ 51.707028][ T3597] hsr_create_self_node+0x22d/0x650 [ 51.712213][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 51.717077][ T3597] hsr_newlink+0x315/0x730 [ 51.721660][ T3597] ? hsr_dellink+0x130/0x130 [ 51.726323][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 51.731353][ T3597] ? hsr_dellink+0x130/0x130 [ 51.736054][ T3597] __rtnl_newlink+0x107c/0x1760 [ 51.741051][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 51.745967][ T3597] ? is_bpf_text_address+0x77/0x170 [ 51.751343][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 51.756201][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 51.761424][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.767590][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 51.773322][ T3597] ? is_bpf_text_address+0x99/0x170 [ 51.778524][ T3597] ? kernel_text_address+0x39/0x80 [ 51.783753][ T3597] ? __kernel_text_address+0x9/0x30 [ 51.788954][ T3597] ? unwind_get_return_address+0x51/0x90 [ 51.794583][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 51.799869][ T3597] ? arch_stack_walk+0x93/0xe0 [ 51.804740][ T3597] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 51.810352][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 51.816026][ T3597] rtnl_newlink+0x64/0xa0 [ 51.820359][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 51.825378][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 51.830331][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 51.835098][ T3597] netlink_rcv_skb+0x153/0x420 [ 51.840112][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 51.844880][ T3597] ? netlink_ack+0xa60/0xa60 [ 51.849546][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 51.854909][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 51.860274][ T3597] netlink_unicast+0x539/0x7e0 [ 51.865043][ T3597] ? netlink_attachskb+0x880/0x880 [ 51.870148][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.876482][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.882734][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 51.887773][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 51.893585][ T3597] ? __check_object_size+0x16e/0x310 [ 51.898894][ T3597] netlink_sendmsg+0x904/0xe00 [ 51.903659][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 51.908589][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 51.914819][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 51.919766][ T3597] sock_sendmsg+0xcf/0x120 [ 51.924187][ T3597] __sys_sendto+0x21c/0x320 [ 51.928677][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 51.934203][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 51.939401][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 51.944845][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 51.949760][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 51.954514][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 51.959700][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 51.965768][ T3597] do_syscall_64+0x35/0xb0 [ 51.970177][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.976069][ T3597] RIP: 0033:0x7f7c17f73e1c [ 51.980564][ 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 [ 52.000606][ T3597] RSP: 002b:00007ffc03040000 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.009027][ T3597] RAX: ffffffffffffffda RBX: 00007f7c1900c320 RCX: 00007f7c17f73e1c [ 52.017371][ T3597] RDX: 0000000000000048 RSI: 00007f7c1900c370 RDI: 0000000000000003 [ 52.025446][ T3597] RBP: 0000000000000000 R08: 00007ffc03040054 R09: 000000000000000c [ 52.033663][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.042308][ T3597] R13: 00007f7c1900c370 R14: 0000000000000003 R15: 0000000000000000 [ 52.050487][ T3597] [ 52.058448][ T3597] device hsr_slave_0 entered promiscuous mode [ 52.066274][ T3597] device hsr_slave_1 entered promiscuous mode [ 52.148076][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.158530][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.167554][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.176628][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.198367][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.205816][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.213896][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.221256][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.267965][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.279871][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.291515][ T919] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.299988][ T919] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.308653][ T919] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.323623][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.334068][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.343500][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.352506][ T6] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.359745][ T6] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.385374][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.394826][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.403742][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.411067][ T3607] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.419990][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.428637][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.437741][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.446976][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.455904][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.464853][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.476088][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.490341][ T3597] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 52.503201][ T3597] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.516864][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.525655][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.535253][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.543754][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.552333][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.568507][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.576092][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 52.590125][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.701971][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 52.710855][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.725816][ T3597] device veth0_vlan entered promiscuous mode [ 52.733407][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 52.742280][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.753802][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.762008][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.773023][ T3597] device veth1_vlan entered promiscuous mode [ 52.791639][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.799937][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.808960][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 52.818346][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.830497][ T3597] device veth0_macvtap entered promiscuous mode [ 52.840044][ T3597] device veth1_macvtap entered promiscuous mode [ 52.856421][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.864374][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 52.872754][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 52.880817][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 52.890225][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.902258][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.909806][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 52.918703][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.931062][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.940537][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.950113][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.959124][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.024307][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.032392][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.044079][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.064595][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.073021][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.081895][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/19 06:08:06 building call list... [ 53.313832][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.468478][ T3590] can: request_module (can-proto-0) failed. [ 55.493111][ T3590] can: request_module (can-proto-0) failed. [ 55.515416][ T3590] can: request_module (can-proto-0) failed. executing program [ 56.135503][ T11] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0