DUID 00:04:1b:66:36:25:cc:bb:2d:eb:42:73:ce:96:f3:b7:d0:c0 forked to background, child pid 3174 [ 31.182174][ T3175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 31.196901][ T3175] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.1' (ECDSA) to the list of known hosts. 2022/02/17 15:38:23 fuzzer started 2022/02/17 15:38:23 connecting to host at 10.128.0.169:40155 2022/02/17 15:38:23 checking machine... 2022/02/17 15:38:23 checking revisions... 2022/02/17 15:38:23 testing simple program... syzkaller login: [ 47.352777][ T3594] cgroup: Unknown subsys name 'net' [ 47.451568][ T3594] cgroup: Unknown subsys name 'rlimit' [ 48.690576][ T3598] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 48.698825][ T3598] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 48.707315][ T3598] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 48.715445][ T3598] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 48.722827][ T3598] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 48.730380][ T3598] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 48.822579][ T3596] chnl_net:caif_netlink_parms(): no params data found [ 48.867199][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.875010][ T3596] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.882937][ T3596] device bridge_slave_0 entered promiscuous mode [ 48.892561][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.900221][ T3596] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.908787][ T3596] device bridge_slave_1 entered promiscuous mode [ 48.931660][ T3596] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 48.943280][ T3596] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 48.967784][ T3596] team0: Port device team_slave_0 added [ 48.976138][ T3596] team0: Port device team_slave_1 added [ 48.994262][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 49.001442][ T3596] 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. [ 49.027648][ T3596] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 49.041643][ T3596] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 49.048997][ T3596] 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. [ 49.075389][ T3596] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 49.100194][ T3596] [ 49.102722][ T3596] ============================= [ 49.107618][ T3596] WARNING: suspicious RCU usage [ 49.112469][ T3596] 5.17.0-rc2-syzkaller-00973-g9e98ace24e26 #0 Not tainted [ 49.119731][ T3596] ----------------------------- [ 49.124708][ T3596] net/hsr/hsr_framereg.c:34 suspicious rcu_dereference_check() usage! [ 49.132859][ T3596] [ 49.132859][ T3596] other info that might help us debug this: [ 49.132859][ T3596] [ 49.143303][ T3596] [ 49.143303][ T3596] rcu_scheduler_active = 2, debug_locks = 1 [ 49.151403][ T3596] 2 locks held by syz-executor.0/3596: [ 49.156913][ T3596] #0: ffffffff8d32caa8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3be/0xb80 [ 49.166442][ T3596] #1: ffff88807bd055f0 (&hsr->list_lock){+...}-{2:2}, at: hsr_create_self_node+0x225/0x650 [ 49.176729][ T3596] [ 49.176729][ T3596] stack backtrace: [ 49.182712][ T3596] CPU: 1 PID: 3596 Comm: syz-executor.0 Not tainted 5.17.0-rc2-syzkaller-00973-g9e98ace24e26 #0 [ 49.193135][ T3596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.203189][ T3596] Call Trace: [ 49.206465][ T3596] [ 49.209392][ T3596] dump_stack_lvl+0xcd/0x134 [ 49.213997][ T3596] hsr_node_get_first+0x9b/0xb0 [ 49.218864][ T3596] hsr_create_self_node+0x22d/0x650 [ 49.224073][ T3596] hsr_dev_finalize+0x2c1/0x7d0 [ 49.228956][ T3596] hsr_newlink+0x315/0x730 [ 49.233376][ T3596] ? hsr_dellink+0x130/0x130 [ 49.237973][ T3596] ? rtnl_create_link+0x7e8/0xc00 [ 49.243010][ T3596] ? hsr_dellink+0x130/0x130 [ 49.247600][ T3596] __rtnl_newlink+0x107c/0x1760 [ 49.252468][ T3596] ? rtnl_setlink+0x3c0/0x3c0 [ 49.257177][ T3596] ? is_bpf_text_address+0x77/0x170 [ 49.262396][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 49.267264][ T3596] ? unwind_next_frame+0xee1/0x1ce0 [ 49.272483][ T3596] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.278575][ T3596] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 49.284333][ T3596] ? is_bpf_text_address+0x99/0x170 [ 49.289564][ T3596] ? kernel_text_address+0x39/0x80 [ 49.294698][ T3596] ? __kernel_text_address+0x9/0x30 [ 49.299906][ T3596] ? unwind_get_return_address+0x51/0x90 [ 49.305552][ T3596] ? create_prof_cpu_mask+0x20/0x20 [ 49.310882][ T3596] ? arch_stack_walk+0x93/0xe0 [ 49.315727][ T3596] ? kmem_cache_alloc_trace+0x42/0x2c0 [ 49.321392][ T3596] ? rcu_read_lock_sched_held+0x3a/0x70 [ 49.326966][ T3596] rtnl_newlink+0x64/0xa0 [ 49.331305][ T3596] ? __rtnl_newlink+0x1760/0x1760 [ 49.336334][ T3596] rtnetlink_rcv_msg+0x413/0xb80 [ 49.341282][ T3596] ? rtnl_newlink+0xa0/0xa0 [ 49.345806][ T3596] netlink_rcv_skb+0x153/0x420 [ 49.350597][ T3596] ? rtnl_newlink+0xa0/0xa0 [ 49.355115][ T3596] ? netlink_ack+0xa60/0xa60 [ 49.359707][ T3596] ? netlink_deliver_tap+0x1a2/0xc40 [ 49.365009][ T3596] ? netlink_deliver_tap+0x1b1/0xc40 [ 49.370304][ T3596] netlink_unicast+0x539/0x7e0 [ 49.375093][ T3596] ? netlink_attachskb+0x880/0x880 [ 49.380208][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 49.386472][ T3596] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 49.392744][ T3596] ? __phys_addr_symbol+0x2c/0x70 [ 49.397793][ T3596] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 49.403540][ T3596] ? __check_object_size+0x16e/0x310 [ 49.408835][ T3596] netlink_sendmsg+0x904/0xe00 [ 49.413615][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 49.418562][ T3596] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 49.424827][ T3596] ? netlink_unicast+0x7e0/0x7e0 [ 49.429766][ T3596] sock_sendmsg+0xcf/0x120 [ 49.434188][ T3596] __sys_sendto+0x21c/0x320 [ 49.438698][ T3596] ? __ia32_sys_getpeername+0xb0/0xb0 [ 49.444072][ T3596] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.450101][ T3596] ? __context_tracking_exit+0xb8/0xe0 [ 49.455569][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 49.460440][ T3596] ? lock_downgrade+0x6e0/0x6e0 [ 49.465311][ T3596] __x64_sys_sendto+0xdd/0x1b0 [ 49.470099][ T3596] ? lockdep_hardirqs_on+0x79/0x100 [ 49.475341][ T3596] ? syscall_enter_from_user_mode+0x21/0x70 [ 49.481440][ T3596] do_syscall_64+0x35/0xb0 [ 49.485962][ T3596] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.492293][ T3596] RIP: 0033:0x7f7d67a15e1c [ 49.496710][ T3596] 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 [ 49.516402][ T3596] RSP: 002b:00007ffc4e1364a0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 49.524828][ T3596] RAX: ffffffffffffffda RBX: 00007f7d68aae320 RCX: 00007f7d67a15e1c [ 49.532814][ T3596] RDX: 0000000000000048 RSI: 00007f7d68aae370 RDI: 0000000000000003 [ 49.540881][ T3596] RBP: 0000000000000000 R08: 00007ffc4e1364f4 R09: 000000000000000c [ 49.548962][ T3596] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 49.556930][ T3596] R13: 00007f7d68aae370 R14: 0000000000000003 R15: 0000000000000000 [ 49.565002][ T3596] [ 49.572235][ T3596] device hsr_slave_0 entered promiscuous mode [ 49.579655][ T3596] device hsr_slave_1 entered promiscuous mode [ 49.662983][ T3596] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 49.673942][ T3596] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 49.683773][ T3596] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 49.693197][ T3596] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 49.714633][ T3596] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.722002][ T3596] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.729995][ T3596] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.737203][ T3596] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.782894][ T3596] 8021q: adding VLAN 0 to HW filter on device bond0 [ 49.799428][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 49.809446][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 49.818970][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 49.827220][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 49.841234][ T3596] 8021q: adding VLAN 0 to HW filter on device team0 [ 49.851061][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 49.860526][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 49.869231][ T31] bridge0: port 1(bridge_slave_0) entered blocking state [ 49.876341][ T31] bridge0: port 1(bridge_slave_0) entered forwarding state [ 49.891956][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 49.900799][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 49.910121][ T31] bridge0: port 2(bridge_slave_1) entered blocking state [ 49.917426][ T31] bridge0: port 2(bridge_slave_1) entered forwarding state [ 49.931343][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 49.940795][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 49.960732][ T3596] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 49.972511][ T3596] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 49.984705][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 49.993548][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 50.002915][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 50.011755][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 50.020656][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 50.029360][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 50.038222][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 50.046782][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 50.055516][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 50.063426][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 50.080211][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 50.088188][ T31] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 50.100856][ T3596] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 50.216407][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 50.226338][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 50.240364][ T3596] device veth0_vlan entered promiscuous mode [ 50.247458][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 50.256776][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 50.269214][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 50.277453][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 50.289736][ T3596] device veth1_vlan entered promiscuous mode [ 50.308556][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 50.316968][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 50.325691][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 50.334150][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 50.345242][ T3596] device veth0_macvtap entered promiscuous mode [ 50.354124][ T3596] device veth1_macvtap entered promiscuous mode [ 50.370903][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 50.379624][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 50.387976][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 50.397962][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 50.406693][ T1891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 50.419494][ T3596] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 50.430580][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 50.439333][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 50.450273][ T3596] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.460721][ T3596] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.470564][ T3596] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.480884][ T3596] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 50.545596][ T1038] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.554101][ T1038] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.564219][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 50.588963][ T1038] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 50.597125][ T1038] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 50.607907][ T3615] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2022/02/17 15:38:27 building call list... [ 50.765839][ T3615] Bluetooth: hci0: command 0x0409 tx timeout [ 50.873771][ T1038] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 53.116486][ T3591] can: request_module (can-proto-0) failed. [ 53.139662][ T3591] can: request_module (can-proto-0) failed. executing program [ 53.161276][ T3591] can: request_module (can-proto-0) failed. [ 53.467172][ T1038] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0