DUID 00:04:63:3c:db:c8:83:d4:2a:b1:e5:3f:fc:31:79:55:3b:bc forked to background, child pid 3173 [ 29.144757][ T3174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.163315][ T3174] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.48' (ECDSA) to the list of known hosts. 2022/02/15 11:13:25 fuzzer started 2022/02/15 11:13:25 connecting to host at 10.128.0.169:42353 2022/02/15 11:13:25 checking machine... 2022/02/15 11:13:25 checking revisions... 2022/02/15 11:13:25 testing simple program... syzkaller login: [ 51.450401][ T3602] cgroup: Unknown subsys name 'net' [ 51.567660][ T3602] cgroup: Unknown subsys name 'rlimit' [ 52.811145][ T3605] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.819056][ T3605] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.827193][ T3605] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.835302][ T3605] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.842969][ T3605] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.850789][ T3605] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 52.938237][ T3604] chnl_net:caif_netlink_parms(): no params data found [ 52.979757][ T3604] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.987296][ T3604] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.995576][ T3604] device bridge_slave_0 entered promiscuous mode [ 53.004533][ T3604] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.012156][ T3604] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.019816][ T3604] device bridge_slave_1 entered promiscuous mode [ 53.041487][ T3604] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.052417][ T3604] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.074090][ T3604] team0: Port device team_slave_0 added [ 53.082511][ T3604] team0: Port device team_slave_1 added [ 53.098991][ T3604] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 53.105964][ 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. [ 53.132022][ T3604] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 53.145353][ T3604] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 53.152538][ 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. [ 53.178456][ T3604] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 53.203976][ T3604] [ 53.206397][ T3604] ============================= [ 53.211275][ T3604] WARNING: suspicious RCU usage [ 53.216235][ T3604] 5.17.0-rc4-next-20220215-syzkaller #0 Not tainted [ 53.222848][ T3604] ----------------------------- [ 53.227688][ T3604] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 53.235872][ T3604] [ 53.235872][ T3604] other info that might help us debug this: [ 53.235872][ T3604] [ 53.246156][ T3604] [ 53.246156][ T3604] rcu_scheduler_active = 2, debug_locks = 1 [ 53.254269][ T3604] 2 locks held by syz-executor.0/3604: [ 53.259735][ T3604] #0: ffffffff8d336c68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 53.269262][ T3604] #1: ffff888076df95f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 53.279512][ T3604] [ 53.279512][ T3604] stack backtrace: [ 53.285519][ T3604] CPU: 1 PID: 3604 Comm: syz-executor.0 Not tainted 5.17.0-rc4-next-20220215-syzkaller #0 [ 53.295513][ T3604] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.305738][ T3604] Call Trace: [ 53.309010][ T3604] [ 53.311929][ T3604] dump_stack_lvl+0xcd/0x134 [ 53.317060][ T3604] hsr_node_get_first+0x9b/0xb0 [ 53.321907][ T3604] hsr_create_self_node+0x22d/0x650 [ 53.327098][ T3604] hsr_dev_finalize+0x2c1/0x7d0 [ 53.331956][ T3604] hsr_newlink+0x315/0x730 [ 53.336368][ T3604] ? hsr_dellink+0x130/0x130 [ 53.340956][ T3604] ? rtnl_create_link+0x7e8/0xc00 [ 53.345972][ T3604] ? hsr_dellink+0x130/0x130 [ 53.350561][ T3604] __rtnl_newlink+0x107c/0x1760 [ 53.355438][ T3604] ? rtnl_setlink+0x3c0/0x3c0 [ 53.360144][ T3604] ? is_bpf_text_address+0x77/0x170 [ 53.365350][ T3604] ? lock_downgrade+0x6e0/0x6e0 [ 53.370195][ T3604] ? unwind_next_frame+0xee1/0x1ce0 [ 53.375574][ T3604] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.381643][ T3604] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 53.387385][ T3604] ? is_bpf_text_address+0x99/0x170 [ 53.392779][ T3604] ? kernel_text_address+0x39/0x80 [ 53.397902][ T3604] ? __kernel_text_address+0x9/0x30 [ 53.403109][ T3604] ? unwind_get_return_address+0x51/0x90 [ 53.408748][ T3604] ? create_prof_cpu_mask+0x20/0x20 [ 53.413960][ T3604] ? arch_stack_walk+0x93/0xe0 [ 53.418791][ T3604] ? kmem_cache_alloc_trace+0x42/0x3d0 [ 53.424306][ T3604] ? rcu_read_lock_sched_held+0x3a/0x70 [ 53.429867][ T3604] rtnl_newlink+0x64/0xa0 [ 53.434208][ T3604] ? __rtnl_newlink+0x1760/0x1760 [ 53.439238][ T3604] rtnetlink_rcv_msg+0x413/0xb80 [ 53.444272][ T3604] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 53.449068][ T3604] netlink_rcv_skb+0x153/0x420 [ 53.453848][ T3604] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 53.458624][ T3604] ? netlink_ack+0xa80/0xa80 [ 53.463224][ T3604] ? netlink_deliver_tap+0x1a2/0xc40 [ 53.468515][ T3604] ? netlink_deliver_tap+0x1b1/0xc40 [ 53.473811][ T3604] netlink_unicast+0x539/0x7e0 [ 53.478586][ T3604] ? netlink_attachskb+0x880/0x880 [ 53.483706][ T3604] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.489991][ T3604] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 53.496250][ T3604] ? __phys_addr_symbol+0x2c/0x70 [ 53.501282][ T3604] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 53.507016][ T3604] ? __check_object_size+0x16c/0x4f0 [ 53.512312][ T3604] netlink_sendmsg+0x904/0xe00 [ 53.517695][ T3604] ? netlink_unicast+0x7e0/0x7e0 [ 53.522646][ T3604] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 53.528901][ T3604] ? netlink_unicast+0x7e0/0x7e0 [ 53.533873][ T3604] sock_sendmsg+0xcf/0x120 [ 53.538299][ T3604] __sys_sendto+0x21c/0x320 [ 53.542817][ T3604] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.548200][ T3604] ? lockdep_hardirqs_on+0x79/0x100 [ 53.553430][ T3604] ? __context_tracking_exit+0xb8/0xe0 [ 53.558902][ T3604] ? lock_downgrade+0x6e0/0x6e0 [ 53.563778][ T3604] __x64_sys_sendto+0xdd/0x1b0 [ 53.568557][ T3604] ? lockdep_hardirqs_on+0x79/0x100 [ 53.573850][ T3604] ? syscall_enter_from_user_mode+0x21/0x70 [ 53.579751][ T3604] do_syscall_64+0x35/0xb0 [ 53.584517][ T3604] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 53.590431][ T3604] RIP: 0033:0x7f4de699ce1c [ 53.594846][ 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 [ 53.614458][ T3604] RSP: 002b:00007fff82996600 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 53.622967][ T3604] RAX: ffffffffffffffda RBX: 00007f4de7a35320 RCX: 00007f4de699ce1c [ 53.630935][ T3604] RDX: 0000000000000048 RSI: 00007f4de7a35370 RDI: 0000000000000003 [ 53.638903][ T3604] RBP: 0000000000000000 R08: 00007fff82996654 R09: 000000000000000c [ 53.646903][ T3604] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 53.654871][ T3604] R13: 00007f4de7a35370 R14: 0000000000000003 R15: 0000000000000000 [ 53.662886][ T3604] [ 53.670831][ T3604] device hsr_slave_0 entered promiscuous mode [ 53.677971][ T3604] device hsr_slave_1 entered promiscuous mode [ 53.755238][ T3604] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.765158][ T3604] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.774399][ T3604] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.784029][ T3604] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.804217][ T3604] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.811497][ T3604] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.819524][ T3604] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.826668][ T3604] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.870095][ T3604] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.883362][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.893784][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.902137][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.909935][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 53.922909][ T3604] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.935694][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.944328][ T3614] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.951454][ T3614] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.962528][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.972925][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.981588][ T6] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.988642][ T6] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.009559][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 54.019111][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 54.028029][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 54.037980][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.053188][ T3604] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 54.071901][ T3604] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 54.085799][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.094458][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.103333][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.111954][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 54.121694][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.131012][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.139715][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.163829][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.171905][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 54.179379][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 54.194193][ T3604] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 54.333104][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 54.342564][ T6] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 54.354519][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 54.362898][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 54.372807][ T3604] device veth0_vlan entered promiscuous mode [ 54.380751][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 54.388403][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 54.399748][ T3604] device veth1_vlan entered promiscuous mode [ 54.417626][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 54.426006][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 54.434237][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 54.442755][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 54.452567][ T3604] device veth0_macvtap entered promiscuous mode [ 54.463245][ T3604] device veth1_macvtap entered promiscuous mode [ 54.478121][ T3604] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 54.486741][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 54.495030][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 54.503227][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 54.512764][ T3614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 54.525009][ T3604] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 54.532802][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 54.542216][ T3617] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 54.552812][ T3604] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.561938][ T3604] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.571124][ T3604] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.584040][ T3604] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 54.655466][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.665584][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.676030][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 54.693095][ T971] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.701388][ T971] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.709846][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/15 11:13:28 building call list... [ 54.881612][ T22] Bluetooth: hci0: command 0x0409 tx timeout [ 55.000629][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 57.062520][ T3626] can: request_module (can-proto-0) failed. [ 57.084424][ T3626] can: request_module (can-proto-0) failed. [ 57.105748][ T3626] can: request_module (can-proto-0) failed. executing program [ 57.496662][ T3604] syz-executor.0 (3604) used greatest stack depth: 21688 bytes left [ 57.593038][ T11] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0