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 [ 31.973484][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.986666][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.233' (ECDSA) to the list of known hosts. 2022/02/18 15:28:04 fuzzer started 2022/02/18 15:28:04 connecting to host at 10.128.0.169:36939 2022/02/18 15:28:04 checking machine... 2022/02/18 15:28:04 checking revisions... 2022/02/18 15:28:04 testing simple program... syzkaller login: [ 48.583717][ T3595] cgroup: Unknown subsys name 'net' [ 48.709466][ T3595] cgroup: Unknown subsys name 'rlimit' [ 49.921444][ T3598] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 49.930630][ T3598] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 49.939064][ T3598] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 49.947470][ T3598] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 49.955387][ T3598] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 49.963676][ T3598] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 50.060349][ T3597] chnl_net:caif_netlink_parms(): no params data found [ 50.103306][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.111237][ T3597] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.119380][ T3597] device bridge_slave_0 entered promiscuous mode [ 50.128543][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.136262][ T3597] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.144477][ T3597] device bridge_slave_1 entered promiscuous mode [ 50.169026][ T3597] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 50.180630][ T3597] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 50.204769][ T3597] team0: Port device team_slave_0 added [ 50.213997][ T3597] team0: Port device team_slave_1 added [ 50.231311][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 50.238909][ 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. [ 50.265746][ T3597] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 50.279956][ T3597] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 50.287973][ 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. [ 50.314426][ T3597] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 50.339513][ T3597] [ 50.342313][ T3597] ============================= [ 50.347269][ T3597] WARNING: suspicious RCU usage [ 50.352195][ T3597] 5.17.0-rc4-syzkaller-01348-g086d49058cd8 #0 Not tainted [ 50.359653][ T3597] ----------------------------- [ 50.364763][ T3597] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 50.373065][ T3597] [ 50.373065][ T3597] other info that might help us debug this: [ 50.373065][ T3597] [ 50.383581][ T3597] [ 50.383581][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 50.392103][ T3597] 2 locks held by syz-executor.0/3597: [ 50.397599][ T3597] #0: ffffffff8d32f868 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 50.407484][ T3597] #1: ffff88801db295f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 50.418125][ T3597] [ 50.418125][ T3597] stack backtrace: [ 50.424434][ T3597] CPU: 0 PID: 3597 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01348-g086d49058cd8 #0 [ 50.434979][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.445865][ T3597] Call Trace: [ 50.449145][ T3597] [ 50.452165][ T3597] dump_stack_lvl+0xcd/0x134 [ 50.456972][ T3597] hsr_node_get_first+0x9b/0xb0 [ 50.462279][ T3597] hsr_create_self_node+0x22d/0x650 [ 50.468281][ T3597] hsr_dev_finalize+0x2c1/0x7d0 [ 50.473402][ T3597] hsr_newlink+0x315/0x730 [ 50.477965][ T3597] ? hsr_dellink+0x130/0x130 [ 50.483037][ T3597] ? rtnl_create_link+0x7e8/0xc00 [ 50.488435][ T3597] ? hsr_dellink+0x130/0x130 [ 50.493237][ T3597] __rtnl_newlink+0x107c/0x1760 [ 50.498187][ T3597] ? rtnl_setlink+0x3c0/0x3c0 [ 50.503304][ T3597] ? is_bpf_text_address+0x77/0x170 [ 50.508687][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 50.513539][ T3597] ? unwind_next_frame+0xee1/0x1ce0 [ 50.518751][ T3597] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.525357][ T3597] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 50.531427][ T3597] ? is_bpf_text_address+0x99/0x170 [ 50.536802][ T3597] ? kernel_text_address+0x39/0x80 [ 50.542145][ T3597] ? __kernel_text_address+0x9/0x30 [ 50.547366][ T3597] ? unwind_get_return_address+0x51/0x90 [ 50.553952][ T3597] ? create_prof_cpu_mask+0x20/0x20 [ 50.559414][ T3597] ? arch_stack_walk+0x93/0xe0 [ 50.564880][ T3597] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 50.571564][ T3597] ? rcu_read_lock_sched_held+0x3a/0x70 [ 50.577124][ T3597] rtnl_newlink+0x64/0xa0 [ 50.581636][ T3597] ? __rtnl_newlink+0x1760/0x1760 [ 50.586857][ T3597] rtnetlink_rcv_msg+0x413/0xb80 [ 50.592155][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 50.596945][ T3597] netlink_rcv_skb+0x153/0x420 [ 50.601983][ T3597] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 50.606881][ T3597] ? netlink_ack+0xa60/0xa60 [ 50.611496][ T3597] ? netlink_deliver_tap+0x1a2/0xc40 [ 50.616892][ T3597] ? netlink_deliver_tap+0x1b1/0xc40 [ 50.622542][ T3597] netlink_unicast+0x539/0x7e0 [ 50.627686][ T3597] ? netlink_attachskb+0x880/0x880 [ 50.633062][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.639570][ T3597] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 50.645894][ T3597] ? __phys_addr_symbol+0x2c/0x70 [ 50.651005][ T3597] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 50.656720][ T3597] ? __check_object_size+0x16e/0x310 [ 50.662013][ T3597] netlink_sendmsg+0x904/0xe00 [ 50.667240][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 50.672329][ T3597] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 50.678845][ T3597] ? netlink_unicast+0x7e0/0x7e0 [ 50.683806][ T3597] sock_sendmsg+0xcf/0x120 [ 50.688397][ T3597] __sys_sendto+0x21c/0x320 [ 50.693182][ T3597] ? __ia32_sys_getpeername+0xb0/0xb0 [ 50.698731][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 50.704244][ T3597] ? __context_tracking_exit+0xb8/0xe0 [ 50.710064][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 50.714927][ T3597] __x64_sys_sendto+0xdd/0x1b0 [ 50.719859][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 50.725448][ T3597] ? syscall_enter_from_user_mode+0x21/0x70 [ 50.731745][ T3597] do_syscall_64+0x35/0xb0 [ 50.736534][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.742425][ T3597] RIP: 0033:0x7f4d548bee1c [ 50.746922][ 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 [ 50.767889][ T3597] RSP: 002b:00007ffd8399d520 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 50.776414][ T3597] RAX: ffffffffffffffda RBX: 00007f4d55957320 RCX: 00007f4d548bee1c [ 50.784824][ T3597] RDX: 0000000000000048 RSI: 00007f4d55957370 RDI: 0000000000000003 [ 50.792793][ T3597] RBP: 0000000000000000 R08: 00007ffd8399d574 R09: 000000000000000c [ 50.801055][ T3597] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 50.809455][ T3597] R13: 00007f4d55957370 R14: 0000000000000003 R15: 0000000000000000 [ 50.817865][ T3597] [ 50.828299][ T3597] device hsr_slave_0 entered promiscuous mode [ 50.835905][ T3597] device hsr_slave_1 entered promiscuous mode [ 50.918070][ T3597] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 50.928946][ T3597] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 50.938872][ T3597] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 50.948054][ T3597] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 50.970147][ T3597] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.977569][ T3597] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.985517][ T3597] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.993050][ T3597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.039012][ T3597] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.054228][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.066337][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.076110][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.086394][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.099560][ T3597] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.110493][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 51.120050][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.128916][ T31] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.136307][ T31] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.158725][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 51.167870][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.176924][ T3609] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.184283][ T3609] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.191911][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 51.201238][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 51.214227][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 51.224128][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.233356][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.250396][ T3597] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 51.262797][ T3597] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 51.275231][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 51.284722][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.294184][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 51.303169][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 51.312577][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 51.321384][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 51.340398][ T3597] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.347940][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.356738][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 51.365370][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 51.472452][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 51.481449][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 51.501523][ T3597] device veth0_vlan entered promiscuous mode [ 51.508986][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 51.519331][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 51.531926][ T3597] device veth1_vlan entered promiscuous mode [ 51.541279][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 51.550364][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 51.559098][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 51.581085][ T3597] device veth0_macvtap entered promiscuous mode [ 51.591248][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 51.600778][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 51.609614][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 51.619473][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 51.630254][ T3597] device veth1_macvtap entered promiscuous mode [ 51.667929][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 51.680774][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 51.689601][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 51.698688][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 51.709788][ T3597] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 51.717868][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 51.728173][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 51.738905][ T3597] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.749260][ T3597] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.758318][ T3597] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.768102][ T3597] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.831969][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.842979][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.855922][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 51.869494][ T975] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.877722][ T975] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.887068][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/18 15:28:08 building call list... [ 51.993592][ T21] Bluetooth: hci0: command 0x0409 tx timeout [ 52.130656][ T975] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 54.355527][ T3594] can: request_module (can-proto-0) failed. [ 54.379762][ T3594] can: request_module (can-proto-0) failed. [ 54.403087][ T3594] can: request_module (can-proto-0) failed. [ 54.693331][ T975] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0