DUID 00:04:08:6f:95:b8:7a:da:47:d5:ae:28:d8:4d:e4:58:2e:6d forked to background, child pid 3171 [ 29.464934][ T3172] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.481440][ T3172] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.148' (ECDSA) to the list of known hosts. 2022/02/16 08:55:57 fuzzer started 2022/02/16 08:55:57 connecting to host at 10.128.0.169:36437 2022/02/16 08:55:57 checking machine... 2022/02/16 08:55:57 checking revisions... 2022/02/16 08:55:57 testing simple program... syzkaller login: [ 51.317156][ T3592] cgroup: Unknown subsys name 'net' [ 51.427494][ T3592] cgroup: Unknown subsys name 'rlimit' [ 52.690611][ T3595] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.698570][ T3595] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.706303][ T3595] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.714349][ T3595] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.721909][ T3598] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.729037][ T3598] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.857911][ T3594] chnl_net:caif_netlink_parms(): no params data found [ 52.925333][ T3594] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.933058][ T3594] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.941382][ T3594] device bridge_slave_0 entered promiscuous mode [ 52.950200][ T3594] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.957586][ T3594] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.965813][ T3594] device bridge_slave_1 entered promiscuous mode [ 52.986618][ T3594] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.997680][ T3594] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.021145][ T3594] team0: Port device team_slave_0 added [ 53.028435][ T3594] team0: Port device team_slave_1 added [ 53.046588][ T3594] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.053693][ T3594] 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. [ 53.079702][ T3594] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.092649][ T3594] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.099593][ T3594] 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. [ 53.125525][ T3594] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.149257][ T3594] [ 53.151719][ T3594] ============================= [ 53.156559][ T3594] WARNING: suspicious RCU usage [ 53.161553][ T3594] 5.17.0-rc4-next-20220216-syzkaller #0 Not tainted [ 53.168135][ T3594] ----------------------------- [ 53.173017][ T3594] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 53.181208][ T3594] [ 53.181208][ T3594] other info that might help us debug this: [ 53.181208][ T3594] [ 53.191482][ T3594] [ 53.191482][ T3594] rcu_scheduler_active = 2, debug_locks = 1 [ 53.199716][ T3594] 2 locks held by syz-executor.0/3594: [ 53.205211][ T3594] #0: ffffffff8d3390e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 53.214688][ T3594] #1: ffff88801f55d5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 53.224841][ T3594] [ 53.224841][ T3594] stack backtrace: [ 53.230729][ T3594] CPU: 0 PID: 3594 Comm: syz-executor.0 Not tainted 5.17.0-rc4-next-20220216-syzkaller #0 [ 53.240617][ T3594] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.250658][ T3594] Call Trace: [ 53.253921][ T3594] [ 53.256850][ T3594] dump_stack_lvl+0xcd/0x134 [ 53.261434][ T3594] hsr_node_get_first+0x9b/0xb0 [ 53.266278][ T3594] hsr_create_self_node+0x22d/0x650 [ 53.271493][ T3594] hsr_dev_finalize+0x2c1/0x7d0 [ 53.276338][ T3594] hsr_newlink+0x315/0x730 [ 53.280746][ T3594] ? hsr_dellink+0x130/0x130 [ 53.285332][ T3594] ? rtnl_create_link+0x7e8/0xc00 [ 53.290385][ T3594] ? hsr_dellink+0x130/0x130 [ 53.295003][ T3594] __rtnl_newlink+0x107c/0x1760 [ 53.299872][ T3594] ? rtnl_setlink+0x3c0/0x3c0 [ 53.304564][ T3594] ? is_bpf_text_address+0x77/0x170 [ 53.309779][ T3594] ? lock_downgrade+0x6e0/0x6e0 [ 53.314643][ T3594] ? unwind_next_frame+0xee1/0x1ce0 [ 53.319843][ T3594] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.325933][ T3594] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.331673][ T3594] ? is_bpf_text_address+0x99/0x170 [ 53.336884][ T3594] ? kernel_text_address+0x39/0x80 [ 53.342005][ T3594] ? __kernel_text_address+0x9/0x30 [ 53.347227][ T3594] ? unwind_get_return_address+0x51/0x90 [ 53.352862][ T3594] ? create_prof_cpu_mask+0x20/0x20 [ 53.358069][ T3594] ? arch_stack_walk+0x93/0xe0 [ 53.362926][ T3594] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 53.368599][ T3594] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.374171][ T3594] rtnl_newlink+0x64/0xa0 [ 53.378518][ T3594] ? __rtnl_newlink+0x1760/0x1760 [ 53.383561][ T3594] rtnetlink_rcv_msg+0x413/0xb80 [ 53.388516][ T3594] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 53.393305][ T3594] netlink_rcv_skb+0x153/0x420 [ 53.398079][ T3594] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 53.402849][ T3594] ? netlink_ack+0xa80/0xa80 [ 53.407442][ T3594] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.412737][ T3594] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.418035][ T3594] netlink_unicast+0x539/0x7e0 [ 53.422876][ T3594] ? netlink_attachskb+0x880/0x880 [ 53.427989][ T3594] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.434250][ T3594] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.440504][ T3594] ? __phys_addr_symbol+0x2c/0x70 [ 53.445549][ T3594] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.451290][ T3594] ? __check_object_size+0x16c/0x4f0 [ 53.456584][ T3594] netlink_sendmsg+0x904/0xe00 [ 53.461358][ T3594] ? netlink_unicast+0x7e0/0x7e0 [ 53.466318][ T3594] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.472572][ T3594] ? netlink_unicast+0x7e0/0x7e0 [ 53.477521][ T3594] sock_sendmsg+0xcf/0x120 [ 53.481950][ T3594] __sys_sendto+0x21c/0x320 [ 53.486478][ T3594] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.491945][ T3594] ? lockdep_hardirqs_on+0x79/0x100 [ 53.497257][ T3594] ? __context_tracking_exit+0xb8/0xe0 [ 53.502733][ T3594] ? lock_downgrade+0x6e0/0x6e0 [ 53.507608][ T3594] __x64_sys_sendto+0xdd/0x1b0 [ 53.512390][ T3594] ? lockdep_hardirqs_on+0x79/0x100 [ 53.517685][ T3594] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.523689][ T3594] do_syscall_64+0x35/0xb0 [ 53.528123][ T3594] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.535420][ T3594] RIP: 0033:0x7fcb7a60be1c [ 53.539833][ T3594] 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 [ 53.559636][ T3594] RSP: 002b:00007ffe4e9b0a50 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.568232][ T3594] RAX: ffffffffffffffda RBX: 00007fcb7b6a4320 RCX: 00007fcb7a60be1c [ 53.576312][ T3594] RDX: 0000000000000048 RSI: 00007fcb7b6a4370 RDI: 0000000000000003 [ 53.584401][ T3594] RBP: 0000000000000000 R08: 00007ffe4e9b0aa4 R09: 000000000000000c [ 53.592382][ T3594] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.600366][ T3594] R13: 00007fcb7b6a4370 R14: 0000000000000003 R15: 0000000000000000 [ 53.608361][ T3594] [ 53.619071][ T3594] device hsr_slave_0 entered promiscuous mode [ 53.626440][ T3594] device hsr_slave_1 entered promiscuous mode [ 53.703638][ T3594] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.714273][ T3594] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.724383][ T3594] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.733096][ T3594] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.754147][ T3594] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.761415][ T3594] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.769107][ T3594] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.776210][ T3594] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.817368][ T3594] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.831788][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.843085][ T916] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.852087][ T916] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.860241][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.873874][ T3594] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.884954][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.893883][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.902480][ T916] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.909575][ T916] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.922999][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.931910][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.940317][ T3606] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.947541][ T3606] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.971556][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.980242][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.988904][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.997902][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.006444][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.014916][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.023984][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 54.032608][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.040803][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.049215][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.058796][ T3594] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 54.068065][ T916] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.088771][ T3594] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 54.096574][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.104273][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 54.211290][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.220461][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.238098][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.246832][ T140] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.257511][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.265522][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.273622][ T3594] device veth0_vlan entered promiscuous mode [ 54.285374][ T3594] device veth1_vlan entered promiscuous mode [ 54.303360][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.312060][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.320103][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.329054][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.340501][ T3594] device veth0_macvtap entered promiscuous mode [ 54.351335][ T3594] device veth1_macvtap entered promiscuous mode [ 54.366235][ T3594] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.374384][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.382910][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.390763][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.399732][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.413451][ T3594] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.420784][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.431477][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.442875][ T3594] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.451895][ T3594] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.461771][ T3594] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.470508][ T3594] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.529795][ T86] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.538343][ T86] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.550105][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.568178][ T86] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.576378][ T86] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.585882][ T3606] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/16 08:56:01 building call list... [ 54.761653][ T6] Bluetooth: hci0: command 0x0409 tx timeout [ 54.869825][ T50] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.015388][ T3588] can: request_module (can-proto-0) failed. [ 57.039093][ T3588] can: request_module (can-proto-0) failed. [ 57.061841][ T3588] can: request_module (can-proto-0) failed. executing program [ 57.362814][ T3594] syz-executor.0 (3594) used greatest stack depth: 22384 bytes left [ 57.414008][ T50] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0