DUID 00:04:1b:66:36:25:cc:bb:2d:eb:42:73:ce:96:f3:b7:d0:c0 forked to background, child pid 3175 [ 27.316844][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.327727][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.15.200' (ECDSA) to the list of known hosts. 2022/02/28 23:39:14 fuzzer started 2022/02/28 23:39:15 connecting to host at 10.128.0.169:34543 2022/02/28 23:39:15 checking machine... 2022/02/28 23:39:15 checking revisions... 2022/02/28 23:39:15 testing simple program... syzkaller login: [ 50.377370][ T3597] cgroup: Unknown subsys name 'net' [ 50.484563][ T3597] cgroup: Unknown subsys name 'rlimit' [ 51.694325][ T3600] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.702865][ T3600] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.710869][ T3600] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.719814][ T3600] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.727587][ T3603] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.735217][ T3603] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.825734][ T3599] chnl_net:caif_netlink_parms(): no params data found [ 51.870746][ T3599] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.878554][ T3599] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.887024][ T3599] device bridge_slave_0 entered promiscuous mode [ 51.896506][ T3599] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.903857][ T3599] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.911728][ T3599] device bridge_slave_1 entered promiscuous mode [ 51.932383][ T3599] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.944092][ T3599] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.967888][ T3599] team0: Port device team_slave_0 added [ 51.975991][ T3599] team0: Port device team_slave_1 added [ 51.993945][ T3599] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 52.001166][ T3599] 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. [ 52.027336][ T3599] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 52.040126][ T3599] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 52.047276][ T3599] 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. [ 52.073561][ T3599] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 52.097657][ T3599] [ 52.100270][ T3599] ============================= [ 52.105162][ T3599] WARNING: suspicious RCU usage [ 52.110109][ T3599] 5.17.0-rc4-syzkaller-01374-gb664e255ba3c #0 Not tainted [ 52.118002][ T3599] ----------------------------- [ 52.122961][ T3599] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 52.131156][ T3599] [ 52.131156][ T3599] other info that might help us debug this: [ 52.131156][ T3599] [ 52.141631][ T3599] [ 52.141631][ T3599] rcu_scheduler_active = 2, debug_locks = 1 [ 52.149815][ T3599] 2 locks held by syz-executor.0/3599: [ 52.155313][ T3599] #0: ffffffff8d3308e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 52.165037][ T3599] #1: ffff88801da495f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 52.175371][ T3599] [ 52.175371][ T3599] stack backtrace: [ 52.181257][ T3599] CPU: 0 PID: 3599 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01374-gb664e255ba3c #0 [ 52.191883][ T3599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.202328][ T3599] Call Trace: [ 52.205731][ T3599] [ 52.208671][ T3599] dump_stack_lvl+0xcd/0x134 [ 52.213374][ T3599] hsr_node_get_first+0x9b/0xb0 [ 52.218263][ T3599] hsr_create_self_node+0x22d/0x650 [ 52.223546][ T3599] hsr_dev_finalize+0x2c1/0x7d0 [ 52.228574][ T3599] hsr_newlink+0x315/0x730 [ 52.232998][ T3599] ? hsr_dellink+0x130/0x130 [ 52.237671][ T3599] ? rtnl_create_link+0x7e8/0xc00 [ 52.242710][ T3599] ? hsr_dellink+0x130/0x130 [ 52.247431][ T3599] __rtnl_newlink+0x107c/0x1760 [ 52.252541][ T3599] ? rtnl_setlink+0x3c0/0x3c0 [ 52.257226][ T3599] ? is_bpf_text_address+0x77/0x170 [ 52.262828][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 52.267714][ T3599] ? unwind_next_frame+0xee1/0x1ce0 [ 52.273001][ T3599] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.279066][ T3599] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 52.284801][ T3599] ? is_bpf_text_address+0x99/0x170 [ 52.289998][ T3599] ? kernel_text_address+0x39/0x80 [ 52.295364][ T3599] ? __kernel_text_address+0x9/0x30 [ 52.300712][ T3599] ? unwind_get_return_address+0x51/0x90 [ 52.306421][ T3599] ? create_prof_cpu_mask+0x20/0x20 [ 52.311801][ T3599] ? arch_stack_walk+0x93/0xe0 [ 52.316835][ T3599] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 52.322301][ T3599] ? rcu_read_lock_sched_held+0x3a/0x70 [ 52.327847][ T3599] rtnl_newlink+0x64/0xa0 [ 52.332173][ T3599] ? __rtnl_newlink+0x1760/0x1760 [ 52.337190][ T3599] rtnetlink_rcv_msg+0x413/0xb80 [ 52.342119][ T3599] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 52.346893][ T3599] netlink_rcv_skb+0x153/0x420 [ 52.351646][ T3599] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 52.356408][ T3599] ? netlink_ack+0xa60/0xa60 [ 52.360987][ T3599] ? netlink_deliver_tap+0x1a2/0xc40 [ 52.366283][ T3599] ? netlink_deliver_tap+0x1b1/0xc40 [ 52.371569][ T3599] netlink_unicast+0x539/0x7e0 [ 52.376333][ T3599] ? netlink_attachskb+0x880/0x880 [ 52.382058][ T3599] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.388330][ T3599] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 52.394663][ T3599] ? __phys_addr_symbol+0x2c/0x70 [ 52.399680][ T3599] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 52.405390][ T3599] ? __check_object_size+0x16e/0x310 [ 52.410668][ T3599] netlink_sendmsg+0x904/0xe00 [ 52.415426][ T3599] ? netlink_unicast+0x7e0/0x7e0 [ 52.420361][ T3599] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 52.426707][ T3599] ? netlink_unicast+0x7e0/0x7e0 [ 52.431682][ T3599] sock_sendmsg+0xcf/0x120 [ 52.436291][ T3599] __sys_sendto+0x21c/0x320 [ 52.440837][ T3599] ? __ia32_sys_getpeername+0xb0/0xb0 [ 52.446217][ T3599] ? lockdep_hardirqs_on+0x79/0x100 [ 52.451566][ T3599] ? __context_tracking_exit+0xb8/0xe0 [ 52.457043][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 52.461891][ T3599] __x64_sys_sendto+0xdd/0x1b0 [ 52.466738][ T3599] ? lockdep_hardirqs_on+0x79/0x100 [ 52.472029][ T3599] ? syscall_enter_from_user_mode+0x21/0x70 [ 52.477914][ T3599] do_syscall_64+0x35/0xb0 [ 52.482326][ T3599] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 52.488392][ T3599] RIP: 0033:0x7f6e7af38e0c [ 52.492810][ T3599] 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 [ 52.512520][ T3599] RSP: 002b:00007ffe6870ad00 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.520959][ T3599] RAX: ffffffffffffffda RBX: 00007f6e7bfd1320 RCX: 00007f6e7af38e0c [ 52.529103][ T3599] RDX: 0000000000000048 RSI: 00007f6e7bfd1370 RDI: 0000000000000003 [ 52.537071][ T3599] RBP: 0000000000000000 R08: 00007ffe6870ad54 R09: 000000000000000c [ 52.545025][ T3599] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.553084][ T3599] R13: 00007f6e7bfd1370 R14: 0000000000000003 R15: 0000000000000000 [ 52.561231][ T3599] [ 52.569792][ T3599] device hsr_slave_0 entered promiscuous mode [ 52.576913][ T3599] device hsr_slave_1 entered promiscuous mode [ 52.659043][ T3599] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.669784][ T3599] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.679153][ T3599] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.688771][ T3599] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.710512][ T3599] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.717956][ T3599] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.725991][ T3599] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.733155][ T3599] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.778808][ T3599] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.791794][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.802788][ T31] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.811458][ T31] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.820812][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.834781][ T3599] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.844059][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.854881][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.863634][ T6] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.870867][ T6] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.895466][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.905135][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.914155][ T6] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.921294][ T6] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.929442][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.938110][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.946914][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.955868][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.969851][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.977995][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.986807][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.998134][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.006742][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.021204][ T3599] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 53.032759][ T3599] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.040984][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.049724][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.072022][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 53.079925][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 53.091769][ T3599] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 53.197687][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 53.207256][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 53.222857][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 53.232070][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 53.241730][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 53.250294][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 53.259869][ T3599] device veth0_vlan entered promiscuous mode [ 53.271001][ T3599] device veth1_vlan entered promiscuous mode [ 53.289181][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 53.297363][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 53.306158][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 53.315414][ T3609] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 53.326978][ T3599] device veth0_macvtap entered promiscuous mode [ 53.337195][ T3599] device veth1_macvtap entered promiscuous mode [ 53.352042][ T3599] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 53.360084][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 53.368867][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 53.377668][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 53.386868][ T3611] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 53.398959][ T3599] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 53.406885][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 53.415529][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 53.427271][ T3599] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.436489][ T3599] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.446436][ T3599] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.455635][ T3599] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.516968][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.531876][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.546125][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.546764][ T1091] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.562030][ T1091] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.572724][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/28 23:39:18 building call list... [ 53.830463][ T1036] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.935242][ T3590] can: request_module (can-proto-0) failed. [ 55.958576][ T3590] can: request_module (can-proto-0) failed. [ 55.978766][ T3590] can: request_module (can-proto-0) failed. [ 56.065229][ T1036] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program