DUID 00:04:1e:62:2e:d3:28:4c:47:2c:f6:06:4a:96:1e:52:1a:b0 forked to background, child pid 3174 [ 28.139916][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.156415][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts. 2022/02/22 22:55:38 fuzzer started 2022/02/22 22:55:38 connecting to host at 10.128.0.169:42141 2022/02/22 22:55:38 checking machine... 2022/02/22 22:55:38 checking revisions... 2022/02/22 22:55:39 testing simple program... syzkaller login: [ 44.713401][ T3596] cgroup: Unknown subsys name 'net' [ 44.850292][ T3596] cgroup: Unknown subsys name 'rlimit' [ 46.048587][ T3601] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 46.057416][ T3601] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 46.065704][ T3601] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 46.074373][ T3601] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 46.082548][ T3601] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 46.090204][ T3601] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 46.184142][ T3598] chnl_net:caif_netlink_parms(): no params data found [ 46.227145][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 46.234836][ T3598] bridge0: port 1(bridge_slave_0) entered disabled state [ 46.243056][ T3598] device bridge_slave_0 entered promiscuous mode [ 46.252912][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 46.260060][ T3598] bridge0: port 2(bridge_slave_1) entered disabled state [ 46.268249][ T3598] device bridge_slave_1 entered promiscuous mode [ 46.290824][ T3598] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 46.302656][ T3598] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 46.325174][ T3598] team0: Port device team_slave_0 added [ 46.333391][ T3598] team0: Port device team_slave_1 added [ 46.350835][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 46.357796][ 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. [ 46.384216][ T3598] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 46.397474][ T3598] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 46.404751][ 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. [ 46.430712][ T3598] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 46.454468][ T3598] [ 46.457044][ T3598] ============================= [ 46.461942][ T3598] WARNING: suspicious RCU usage [ 46.466783][ T3598] 5.17.0-rc4-syzkaller-01354-g6966d4c4425b #0 Not tainted [ 46.473933][ T3598] ----------------------------- [ 46.478775][ T3598] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 46.486953][ T3598] [ 46.486953][ T3598] other info that might help us debug this: [ 46.486953][ T3598] [ 46.497208][ T3598] [ 46.497208][ T3598] rcu_scheduler_active = 2, debug_locks = 1 [ 46.505304][ T3598] 2 locks held by syz-executor.0/3598: [ 46.510800][ T3598] #0: ffffffff8d32f868 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 46.520267][ T3598] #1: ffff8880772dd5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 46.530441][ T3598] [ 46.530441][ T3598] stack backtrace: [ 46.536440][ T3598] CPU: 1 PID: 3598 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01354-g6966d4c4425b #0 [ 46.546922][ T3598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.556967][ T3598] Call Trace: [ 46.560231][ T3598] [ 46.563148][ T3598] dump_stack_lvl+0xcd/0x134 [ 46.567908][ T3598] hsr_node_get_first+0x9b/0xb0 [ 46.572745][ T3598] hsr_create_self_node+0x22d/0x650 [ 46.577929][ T3598] hsr_dev_finalize+0x2c1/0x7d0 [ 46.582783][ T3598] hsr_newlink+0x315/0x730 [ 46.587222][ T3598] ? hsr_dellink+0x130/0x130 [ 46.591811][ T3598] ? rtnl_create_link+0x7e8/0xc00 [ 46.597334][ T3598] ? hsr_dellink+0x130/0x130 [ 46.601928][ T3598] __rtnl_newlink+0x107c/0x1760 [ 46.606803][ T3598] ? rtnl_setlink+0x3c0/0x3c0 [ 46.611477][ T3598] ? is_bpf_text_address+0x77/0x170 [ 46.616671][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 46.621526][ T3598] ? unwind_next_frame+0xee1/0x1ce0 [ 46.626744][ T3598] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 46.632905][ T3598] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 46.638649][ T3598] ? is_bpf_text_address+0x99/0x170 [ 46.643876][ T3598] ? kernel_text_address+0x39/0x80 [ 46.648996][ T3598] ? __kernel_text_address+0x9/0x30 [ 46.654204][ T3598] ? unwind_get_return_address+0x51/0x90 [ 46.659840][ T3598] ? create_prof_cpu_mask+0x20/0x20 [ 46.665051][ T3598] ? arch_stack_walk+0x93/0xe0 [ 46.669891][ T3598] ? rcu_read_lock_sched_held+0x3a/0x70 [ 46.675446][ T3598] rtnl_newlink+0x64/0xa0 [ 46.679772][ T3598] ? __rtnl_newlink+0x1760/0x1760 [ 46.684793][ T3598] rtnetlink_rcv_msg+0x413/0xb80 [ 46.689755][ T3598] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 46.694522][ T3598] netlink_rcv_skb+0x153/0x420 [ 46.699281][ T3598] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 46.704043][ T3598] ? netlink_ack+0xa60/0xa60 [ 46.708632][ T3598] ? netlink_deliver_tap+0x1a2/0xc40 [ 46.713918][ T3598] ? netlink_deliver_tap+0x1b1/0xc40 [ 46.719202][ T3598] netlink_unicast+0x539/0x7e0 [ 46.723964][ T3598] ? netlink_attachskb+0x880/0x880 [ 46.729080][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 46.735320][ T3598] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 46.741554][ T3598] ? __phys_addr_symbol+0x2c/0x70 [ 46.746572][ T3598] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 46.752286][ T3598] ? __check_object_size+0x16e/0x310 [ 46.757574][ T3598] netlink_sendmsg+0x904/0xe00 [ 46.762339][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 46.767288][ T3598] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 46.773527][ T3598] ? netlink_unicast+0x7e0/0x7e0 [ 46.778464][ T3598] sock_sendmsg+0xcf/0x120 [ 46.782892][ T3598] __sys_sendto+0x21c/0x320 [ 46.787581][ T3598] ? __ia32_sys_getpeername+0xb0/0xb0 [ 46.792954][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 46.798174][ T3598] ? __context_tracking_exit+0xb8/0xe0 [ 46.803643][ T3598] ? lock_downgrade+0x6e0/0x6e0 [ 46.808516][ T3598] __x64_sys_sendto+0xdd/0x1b0 [ 46.813364][ T3598] ? lockdep_hardirqs_on+0x79/0x100 [ 46.818560][ T3598] ? syscall_enter_from_user_mode+0x21/0x70 [ 46.824473][ T3598] do_syscall_64+0x35/0xb0 [ 46.828889][ T3598] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 46.834775][ T3598] RIP: 0033:0x7f5954a9fe1c [ 46.839185][ 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 [ 46.858783][ T3598] RSP: 002b:00007fffcc99d060 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 46.867277][ T3598] RAX: ffffffffffffffda RBX: 00007f5955b38320 RCX: 00007f5954a9fe1c [ 46.875325][ T3598] RDX: 0000000000000048 RSI: 00007f5955b38370 RDI: 0000000000000003 [ 46.883291][ T3598] RBP: 0000000000000000 R08: 00007fffcc99d0b4 R09: 000000000000000c [ 46.891249][ T3598] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 46.899294][ T3598] R13: 00007f5955b38370 R14: 0000000000000003 R15: 0000000000000000 [ 46.907315][ T3598] [ 46.918130][ T3598] device hsr_slave_0 entered promiscuous mode [ 46.925826][ T3598] device hsr_slave_1 entered promiscuous mode [ 47.008641][ T3598] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 47.021186][ T3598] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 47.031661][ T3598] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 47.041286][ T3598] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 47.065169][ T3598] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.072455][ T3598] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.080442][ T3598] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.087587][ T3598] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.137154][ T3598] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.149780][ T786] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.160623][ T786] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.169995][ T786] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.179301][ T786] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 47.193391][ T3598] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.210669][ T786] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 47.219617][ T786] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 47.228621][ T786] bridge0: port 1(bridge_slave_0) entered blocking state [ 47.235764][ T786] bridge0: port 1(bridge_slave_0) entered forwarding state [ 47.244845][ T786] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 47.254429][ T786] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 47.262889][ T786] bridge0: port 2(bridge_slave_1) entered blocking state [ 47.269940][ T786] bridge0: port 2(bridge_slave_1) entered forwarding state [ 47.277962][ T786] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 47.289190][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 47.302942][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 47.313571][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 47.322963][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 47.339445][ T3598] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 47.350830][ T3598] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 47.364340][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 47.373574][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 47.382679][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 47.391484][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 47.401156][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 47.409517][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 47.418802][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 47.440964][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 47.448618][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 47.460006][ T3598] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 47.570713][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 47.580185][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 47.599474][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 47.607896][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 47.619734][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 47.627854][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 47.636714][ T3598] device veth0_vlan entered promiscuous mode [ 47.647758][ T3598] device veth1_vlan entered promiscuous mode [ 47.666583][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 47.675565][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 47.684020][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 47.693452][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 47.704581][ T3598] device veth0_macvtap entered promiscuous mode [ 47.715288][ T3598] device veth1_macvtap entered promiscuous mode [ 47.733521][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 47.742334][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 47.752342][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 47.760945][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 47.769648][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 47.781688][ T3598] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 47.792443][ T3598] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.801491][ T3598] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.810365][ T3598] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.819859][ T3598] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 47.832975][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 47.842463][ T1132] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 47.906071][ T49] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 47.914715][ T49] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 47.927326][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 47.939366][ T49] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 47.949027][ T49] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 47.958434][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/22 22:55:42 building call list... [ 48.122668][ T786] Bluetooth: hci0: command 0x0409 tx timeout [ 48.225520][ T90] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 50.211699][ T3595] can: request_module (can-proto-0) failed. [ 50.234842][ T3595] can: request_module (can-proto-0) failed. [ 50.256886][ T3595] can: request_module (can-proto-0) failed. executing program [ 50.812402][ T90] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0