forked to background, child pid 3176 [ 28.100937][ T3177] 8021q: adding VLAN 0 to HW filter on device bond0 [ 28.111565][ T3177] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: [ 28.557903][ T3271] sshd (3271) used greatest stack depth: 22776 bytes left OK syzkaller Warning: Permanently added '10.128.10.58' (ECDSA) to the list of known hosts. 2022/02/25 21:32:47 fuzzer started 2022/02/25 21:32:47 connecting to host at 10.128.0.169:34181 2022/02/25 21:32:47 checking machine... 2022/02/25 21:32:47 checking revisions... 2022/02/25 21:32:47 testing simple program... syzkaller login: [ 49.846749][ T3604] cgroup: Unknown subsys name 'net' [ 49.965170][ T3604] cgroup: Unknown subsys name 'rlimit' [ 51.155101][ T3610] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.164191][ T3610] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.172797][ T3610] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.181335][ T3610] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.189352][ T3610] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.197576][ T3610] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.289433][ T3607] chnl_net:caif_netlink_parms(): no params data found [ 51.333557][ T3607] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.341646][ T3607] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.350267][ T3607] device bridge_slave_0 entered promiscuous mode [ 51.359598][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.367029][ T3607] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.375367][ T3607] device bridge_slave_1 entered promiscuous mode [ 51.398647][ T3607] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.411076][ T3607] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.434570][ T3607] team0: Port device team_slave_0 added [ 51.443008][ T3607] team0: Port device team_slave_1 added [ 51.460612][ T3607] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.468055][ T3607] 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. [ 51.494916][ T3607] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.507988][ T3607] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.515134][ T3607] 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. [ 51.541332][ T3607] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.564233][ T3607] [ 51.566724][ T3607] ============================= [ 51.571630][ T3607] WARNING: suspicious RCU usage [ 51.576457][ T3607] 5.17.0-rc4-syzkaller-01360-g80bebebdac93 #0 Not tainted [ 51.584035][ T3607] ----------------------------- [ 51.588929][ T3607] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 51.597197][ T3607] [ 51.597197][ T3607] other info that might help us debug this: [ 51.597197][ T3607] [ 51.607556][ T3607] [ 51.607556][ T3607] rcu_scheduler_active = 2, debug_locks = 1 [ 51.615795][ T3607] 2 locks held by syz-executor.0/3607: [ 51.621468][ T3607] #0: ffffffff8d3308e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 51.630948][ T3607] #1: ffff88807837d5f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 51.641182][ T3607] [ 51.641182][ T3607] stack backtrace: [ 51.647069][ T3607] CPU: 0 PID: 3607 Comm: syz-executor.0 Not tainted 5.17.0-rc4-syzkaller-01360-g80bebebdac93 #0 [ 51.657818][ T3607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.667950][ T3607] Call Trace: [ 51.671225][ T3607] [ 51.674150][ T3607] dump_stack_lvl+0xcd/0x134 [ 51.678733][ T3607] hsr_node_get_first+0x9b/0xb0 [ 51.683686][ T3607] hsr_create_self_node+0x22d/0x650 [ 51.688881][ T3607] hsr_dev_finalize+0x2c1/0x7d0 [ 51.693721][ T3607] hsr_newlink+0x315/0x730 [ 51.698393][ T3607] ? hsr_dellink+0x130/0x130 [ 51.703077][ T3607] ? rtnl_create_link+0x7e8/0xc00 [ 51.708087][ T3607] ? hsr_dellink+0x130/0x130 [ 51.712658][ T3607] __rtnl_newlink+0x107c/0x1760 [ 51.717500][ T3607] ? rtnl_setlink+0x3c0/0x3c0 [ 51.722165][ T3607] ? is_bpf_text_address+0x77/0x170 [ 51.727455][ T3607] ? lock_downgrade+0x6e0/0x6e0 [ 51.732292][ T3607] ? unwind_next_frame+0xee1/0x1ce0 [ 51.737495][ T3607] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.743916][ T3607] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 51.749952][ T3607] ? is_bpf_text_address+0x99/0x170 [ 51.755308][ T3607] ? kernel_text_address+0x39/0x80 [ 51.760814][ T3607] ? __kernel_text_address+0x9/0x30 [ 51.766021][ T3607] ? unwind_get_return_address+0x51/0x90 [ 51.772236][ T3607] ? create_prof_cpu_mask+0x20/0x20 [ 51.777525][ T3607] ? arch_stack_walk+0x93/0xe0 [ 51.782311][ T3607] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 51.787777][ T3607] ? rcu_read_lock_sched_held+0x3a/0x70 [ 51.793417][ T3607] rtnl_newlink+0x64/0xa0 [ 51.797764][ T3607] ? __rtnl_newlink+0x1760/0x1760 [ 51.803001][ T3607] rtnetlink_rcv_msg+0x413/0xb80 [ 51.808058][ T3607] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 51.812951][ T3607] netlink_rcv_skb+0x153/0x420 [ 51.817718][ T3607] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 51.822664][ T3607] ? netlink_ack+0xa60/0xa60 [ 51.827949][ T3607] ? netlink_deliver_tap+0x1a2/0xc40 [ 51.833261][ T3607] ? netlink_deliver_tap+0x1b1/0xc40 [ 51.838632][ T3607] netlink_unicast+0x539/0x7e0 [ 51.843398][ T3607] ? netlink_attachskb+0x880/0x880 [ 51.848614][ T3607] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.854982][ T3607] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 51.861657][ T3607] ? __phys_addr_symbol+0x2c/0x70 [ 51.866762][ T3607] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 51.872469][ T3607] ? __check_object_size+0x16e/0x310 [ 51.877850][ T3607] netlink_sendmsg+0x904/0xe00 [ 51.887802][ T3607] ? netlink_unicast+0x7e0/0x7e0 [ 51.895638][ T3607] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 51.910002][ T3607] ? netlink_unicast+0x7e0/0x7e0 [ 51.919693][ T3607] sock_sendmsg+0xcf/0x120 [ 51.928252][ T3607] __sys_sendto+0x21c/0x320 [ 51.936657][ T3607] ? __ia32_sys_getpeername+0xb0/0xb0 [ 51.951238][ T3607] ? lockdep_hardirqs_on+0x79/0x100 [ 51.956719][ T3607] ? __context_tracking_exit+0xb8/0xe0 [ 51.962276][ T3607] ? lock_downgrade+0x6e0/0x6e0 [ 51.967334][ T3607] __x64_sys_sendto+0xdd/0x1b0 [ 51.972175][ T3607] ? lockdep_hardirqs_on+0x79/0x100 [ 51.977453][ T3607] ? syscall_enter_from_user_mode+0x21/0x70 [ 51.983354][ T3607] do_syscall_64+0x35/0xb0 [ 51.987891][ T3607] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.993974][ T3607] RIP: 0033:0x7fba28e40e0c [ 51.998378][ T3607] 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 [ 52.018093][ T3607] RSP: 002b:00007ffe872203c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 52.026491][ T3607] RAX: ffffffffffffffda RBX: 00007fba29ed9320 RCX: 00007fba28e40e0c [ 52.034545][ T3607] RDX: 0000000000000048 RSI: 00007fba29ed9370 RDI: 0000000000000003 [ 52.042502][ T3607] RBP: 0000000000000000 R08: 00007ffe87220414 R09: 000000000000000c [ 52.050721][ T3607] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 52.058764][ T3607] R13: 00007fba29ed9370 R14: 0000000000000003 R15: 0000000000000000 [ 52.066846][ T3607] [ 52.076334][ T3607] device hsr_slave_0 entered promiscuous mode [ 52.083649][ T3607] device hsr_slave_1 entered promiscuous mode [ 52.163932][ T3607] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.175151][ T3607] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.184818][ T3607] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.194339][ T3607] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.216073][ T3607] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.223364][ T3607] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.231515][ T3607] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.238624][ T3607] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.283892][ T3607] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.297044][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.307371][ T1144] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.317002][ T1144] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.325970][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.341445][ T3607] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.351202][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.360779][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.370049][ T1144] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.377442][ T1144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.400113][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.409172][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.418047][ T1144] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.425291][ T1144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.433353][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.442625][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.451388][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.460798][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.469946][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.479641][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.489127][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.497617][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.507370][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.520597][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.529219][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.540955][ T3607] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.557579][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.565425][ T1144] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.579924][ T3607] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 52.688314][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 52.699756][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.714356][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 52.723589][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.733012][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.741164][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.750646][ T3607] device veth0_vlan entered promiscuous mode [ 52.762317][ T3607] device veth1_vlan entered promiscuous mode [ 52.781658][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.790132][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.799882][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 52.809046][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.821339][ T3607] device veth0_macvtap entered promiscuous mode [ 52.831283][ T3607] device veth1_macvtap entered promiscuous mode [ 52.846810][ T3607] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.856367][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 52.865673][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 52.874300][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 52.883379][ T141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.894997][ T3607] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.903001][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 52.911889][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.923215][ T3607] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.933048][ T3607] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.942042][ T3607] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.951536][ T3607] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 53.015320][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.031644][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.041980][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 53.052362][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 53.062129][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 53.071365][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/25 21:32:51 building call list... [ 53.296647][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 55.494683][ T3605] can: request_module (can-proto-0) failed. [ 55.517696][ T3605] can: request_module (can-proto-0) failed. [ 55.541400][ T3605] can: request_module (can-proto-0) failed. executing program [ 55.825292][ T3607] syz-executor.0 (3607) used greatest stack depth: 21976 bytes left [ 55.871423][ T11] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0