DUID 00:04:00:dd:10:da:7f:85:b5:90:fb:fd:97:ac:66:d6:08:36 forked to background, child pid 3174 [ 29.974123][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.991600][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.59' (ECDSA) to the list of known hosts. 2022/02/16 02:25:41 fuzzer started 2022/02/16 02:25:41 connecting to host at 10.128.0.169:40947 2022/02/16 02:25:41 checking machine... 2022/02/16 02:25:41 checking revisions... 2022/02/16 02:25:41 testing simple program... syzkaller login: [ 47.060785][ T3602] cgroup: Unknown subsys name 'net' [ 47.206073][ T3602] cgroup: Unknown subsys name 'rlimit' [ 48.416201][ T3607] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 48.424724][ T3607] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 48.433032][ T3607] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 48.441229][ T3607] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 48.448891][ T3607] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 48.456594][ T3607] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 48.548323][ T3604] chnl_net:caif_netlink_parms(): no params data found [ 48.593366][ T3604] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.601804][ T3604] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.610471][ T3604] device bridge_slave_0 entered promiscuous mode [ 48.619985][ T3604] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.627233][ T3604] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.635443][ T3604] device bridge_slave_1 entered promiscuous mode [ 48.656578][ T3604] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 48.667684][ T3604] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 48.691061][ T3604] team0: Port device team_slave_0 added [ 48.699209][ T3604] team0: Port device team_slave_1 added [ 48.716224][ T3604] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 48.723447][ T3604] 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. [ 48.750104][ T3604] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 48.765546][ T3604] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 48.772586][ T3604] 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. [ 48.799706][ T3604] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 48.823972][ T3604] [ 48.826410][ T3604] ============================= [ 48.831545][ T3604] WARNING: suspicious RCU usage [ 48.836401][ T3604] 5.17.0-rc3-syzkaller-01180-gb0471c261081 #0 Not tainted [ 48.843575][ T3604] ----------------------------- [ 48.848436][ T3604] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 48.856838][ T3604] [ 48.856838][ T3604] other info that might help us debug this: [ 48.856838][ T3604] [ 48.867110][ T3604] [ 48.867110][ T3604] rcu_scheduler_active = 2, debug_locks = 1 [ 48.875229][ T3604] 2 locks held by syz-executor.0/3604: [ 48.880725][ T3604] #0: ffffffff8d32cb28 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 48.890502][ T3604] #1: ffff88807ea595f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 48.900761][ T3604] [ 48.900761][ T3604] stack backtrace: [ 48.906688][ T3604] CPU: 1 PID: 3604 Comm: syz-executor.0 Not tainted 5.17.0-rc3-syzkaller-01180-gb0471c261081 #0 [ 48.917092][ T3604] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.927141][ T3604] Call Trace: [ 48.930436][ T3604] [ 48.933360][ T3604] dump_stack_lvl+0xcd/0x134 [ 48.937960][ T3604] hsr_node_get_first+0x9b/0xb0 [ 48.942826][ T3604] hsr_create_self_node+0x22d/0x650 [ 48.948044][ T3604] hsr_dev_finalize+0x2c1/0x7d0 [ 48.952883][ T3604] hsr_newlink+0x315/0x730 [ 48.957288][ T3604] ? hsr_dellink+0x130/0x130 [ 48.961868][ T3604] ? rtnl_create_link+0x7e8/0xc00 [ 48.967287][ T3604] ? hsr_dellink+0x130/0x130 [ 48.971867][ T3604] __rtnl_newlink+0x107c/0x1760 [ 48.976810][ T3604] ? rtnl_setlink+0x3c0/0x3c0 [ 48.981506][ T3604] ? is_bpf_text_address+0x77/0x170 [ 48.986779][ T3604] ? lock_downgrade+0x6e0/0x6e0 [ 48.992415][ T3604] ? unwind_next_frame+0xee1/0x1ce0 [ 48.997630][ T3604] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.005885][ T3604] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 49.011617][ T3604] ? is_bpf_text_address+0x99/0x170 [ 49.016832][ T3604] ? kernel_text_address+0x39/0x80 [ 49.022025][ T3604] ? __kernel_text_address+0x9/0x30 [ 49.027401][ T3604] ? unwind_get_return_address+0x51/0x90 [ 49.033438][ T3604] ? create_prof_cpu_mask+0x20/0x20 [ 49.038766][ T3604] ? arch_stack_walk+0x93/0xe0 [ 49.043759][ T3604] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 49.049279][ T3604] ? rcu_read_lock_sched_held+0x3a/0x70 [ 49.054825][ T3604] rtnl_newlink+0x64/0xa0 [ 49.059237][ T3604] ? __rtnl_newlink+0x1760/0x1760 [ 49.064253][ T3604] rtnetlink_rcv_msg+0x413/0xb80 [ 49.069184][ T3604] ? rtnl_newlink+0xa0/0xa0 [ 49.073683][ T3604] netlink_rcv_skb+0x153/0x420 [ 49.078522][ T3604] ? rtnl_newlink+0xa0/0xa0 [ 49.083101][ T3604] ? netlink_ack+0xa60/0xa60 [ 49.087715][ T3604] ? netlink_deliver_tap+0x1a2/0xc40 [ 49.093123][ T3604] ? netlink_deliver_tap+0x1b1/0xc40 [ 49.098552][ T3604] netlink_unicast+0x539/0x7e0 [ 49.103349][ T3604] ? netlink_attachskb+0x880/0x880 [ 49.108552][ T3604] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 49.114800][ T3604] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 49.121069][ T3604] ? __phys_addr_symbol+0x2c/0x70 [ 49.126102][ T3604] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 49.131822][ T3604] ? __check_object_size+0x16e/0x310 [ 49.137118][ T3604] netlink_sendmsg+0x904/0xe00 [ 49.141901][ T3604] ? netlink_unicast+0x7e0/0x7e0 [ 49.146857][ T3604] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.153106][ T3604] ? netlink_unicast+0x7e0/0x7e0 [ 49.158046][ T3604] sock_sendmsg+0xcf/0x120 [ 49.162467][ T3604] __sys_sendto+0x21c/0x320 [ 49.166966][ T3604] ? __ia32_sys_getpeername+0xb0/0xb0 [ 49.172329][ T3604] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.178314][ T3604] ? __context_tracking_exit+0xb8/0xe0 [ 49.183767][ T3604] ? lock_downgrade+0x6e0/0x6e0 [ 49.188606][ T3604] ? lock_downgrade+0x6e0/0x6e0 [ 49.193452][ T3604] __x64_sys_sendto+0xdd/0x1b0 [ 49.198204][ T3604] ? lockdep_hardirqs_on+0x79/0x100 [ 49.203393][ T3604] ? syscall_enter_from_user_mode+0x21/0x70 [ 49.209301][ T3604] do_syscall_64+0x35/0xb0 [ 49.213986][ T3604] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.219908][ T3604] RIP: 0033:0x7ff5d7436e1c [ 49.224318][ T3604] 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 [ 49.243916][ T3604] RSP: 002b:00007ffe90008620 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 49.252320][ T3604] RAX: ffffffffffffffda RBX: 00007ff5d84cf320 RCX: 00007ff5d7436e1c [ 49.260307][ T3604] RDX: 0000000000000048 RSI: 00007ff5d84cf370 RDI: 0000000000000003 [ 49.268279][ T3604] RBP: 0000000000000000 R08: 00007ffe90008674 R09: 000000000000000c [ 49.276248][ T3604] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 49.284293][ T3604] R13: 00007ff5d84cf370 R14: 0000000000000003 R15: 0000000000000000 [ 49.292353][ T3604] [ 49.303734][ T3604] device hsr_slave_0 entered promiscuous mode [ 49.311391][ T3604] device hsr_slave_1 entered promiscuous mode [ 49.434566][ T3604] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 49.462828][ T3604] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 49.474296][ T3604] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 49.483841][ T3604] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 49.508166][ T3604] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.515594][ T3604] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.523486][ T3604] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.530584][ T3604] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.573602][ T3604] 8021q: adding VLAN 0 to HW filter on device bond0 [ 49.585956][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 49.597033][ T25] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.605828][ T25] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.615671][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 49.631524][ T3604] 8021q: adding VLAN 0 to HW filter on device team0 [ 49.642159][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 49.651550][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 49.661046][ T3615] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.668124][ T3615] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.690050][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 49.698684][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 49.707692][ T3615] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.714807][ T3615] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.722874][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 49.731923][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 49.740864][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 49.749873][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 49.758263][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 49.767036][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 49.776409][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 49.785303][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 49.794841][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 49.807736][ T3604] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 49.821444][ T3604] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 49.830715][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready executing program [ 49.839756][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 49.861235][ T3604] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 49.869262][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 49.876931][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 49.999971][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 50.011416][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 50.026533][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 50.035404][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 50.044715][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 50.052779][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 50.063873][ T3604] device veth0_vlan entered promiscuous mode [ 50.075769][ T3604] device veth1_vlan entered promiscuous mode [ 50.096125][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 50.105806][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 50.114732][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 50.123760][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 50.134279][ T3604] device veth0_macvtap entered promiscuous mode [ 50.145442][ T3604] device veth1_macvtap entered promiscuous mode [ 50.160818][ T3604] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.168598][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 50.178398][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 50.187230][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 50.196777][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 50.208702][ T3604] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 50.216351][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 50.225192][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 50.236777][ T3604] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.245953][ T3604] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.255426][ T3604] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.264439][ T3604] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.327633][ T54] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.340189][ T54] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.351858][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 50.366268][ T962] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.374859][ T962] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.383985][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/16 02:25:45 building call list... [ 50.490262][ T6] Bluetooth: hci0: command 0x0409 tx timeout [ 50.641663][ T962] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 52.672418][ T3595] can: request_module (can-proto-0) failed. [ 52.695350][ T3595] can: request_module (can-proto-0) failed. [ 52.715613][ T3595] can: request_module (can-proto-0) failed. executing program [ 52.810806][ T3604] syz-executor.0 (3604) used greatest stack depth: 21920 bytes left [ 52.841499][ T962] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0