DUID 00:04:87:e9:86:9c:37:5a:86:1a:3e:7a:33:57:0c:76:7d:1a forked to background, child pid 4656 [ 35.327281][ T4657] 8021q: adding VLAN 0 to HW filter on device bond0 [ 35.359009][ T4657] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.132' (ECDSA) to the list of known hosts. 2023/03/15 07:30:04 fuzzer started 2023/03/15 07:30:04 connecting to host at 10.128.0.169:38303 2023/03/15 07:30:04 checking machine... 2023/03/15 07:30:04 checking revisions... 2023/03/15 07:30:04 testing simple program... syzkaller login: [ 54.186872][ T5082] cgroup: Unknown subsys name 'net' [ 54.294062][ T5082] cgroup: Unknown subsys name 'rlimit' [ 54.394811][ T5073] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5073 'syz-fuzzer' [ 54.510406][ T5086] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 54.518823][ T5086] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 54.526772][ T5086] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 54.535584][ T5086] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 54.543408][ T5086] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 54.551731][ T5086] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 54.675156][ T5084] chnl_net:caif_netlink_parms(): no params data found [ 54.698667][ T5084] [ 54.701061][ T5084] ============================= [ 54.705908][ T5084] WARNING: suspicious RCU usage [ 54.710945][ T5084] 6.3.0-rc1-syzkaller-00152-g248401cb2c46 #0 Not tainted [ 54.718194][ T5084] ----------------------------- [ 54.723149][ T5084] drivers/net/veth.c:1265 suspicious rcu_dereference_check() usage! [ 54.731204][ T5084] [ 54.731204][ T5084] other info that might help us debug this: [ 54.731204][ T5084] [ 54.741770][ T5084] [ 54.741770][ T5084] rcu_scheduler_active = 2, debug_locks = 1 [ 54.750082][ T5084] 1 lock held by syz-executor.0/5084: [ 54.755482][ T5084] #0: ffffffff8e102ec8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 [ 54.765118][ T5084] [ 54.765118][ T5084] stack backtrace: [ 54.771243][ T5084] CPU: 1 PID: 5084 Comm: syz-executor.0 Not tainted 6.3.0-rc1-syzkaller-00152-g248401cb2c46 #0 [ 54.781761][ T5084] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 54.792216][ T5084] Call Trace: [ 54.795545][ T5084] [ 54.798526][ T5084] dump_stack_lvl+0x136/0x150 [ 54.803417][ T5084] lockdep_rcu_suspicious+0x208/0x3a0 [ 54.808929][ T5084] veth_set_xdp_features+0x1c7/0x250 [ 54.814338][ T5084] veth_newlink+0x729/0x9d0 [ 54.819028][ T5084] ? veth_set_features+0x1e0/0x1e0 [ 54.824246][ T5084] ? __rtnl_newlink+0xfd4/0x1840 [ 54.829281][ T5084] ? rtnl_newlink+0x68/0xa0 [ 54.833893][ T5084] ? rtnetlink_rcv_msg+0x43d/0xd50 [ 54.839015][ T5084] ? netlink_rcv_skb+0x165/0x440 [ 54.843968][ T5084] ? netlink_unicast+0x547/0x7f0 [ 54.848915][ T5084] ? netlink_sendmsg+0x925/0xe30 [ 54.853864][ T5084] ? sock_sendmsg+0xde/0x190 [ 54.858640][ T5084] ? __sys_sendto+0x23a/0x340 [ 54.863595][ T5084] ? __x64_sys_sendto+0xe1/0x1b0 [ 54.868551][ T5084] ? do_syscall_64+0x39/0xb0 [ 54.873182][ T5084] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.879359][ T5084] ? find_held_lock+0x2d/0x110 [ 54.884143][ T5084] ? __kmem_cache_alloc_node+0x48/0x320 [ 54.889808][ T5084] ? kvmalloc_node+0xa2/0x1a0 [ 54.894493][ T5084] ? rcu_read_lock_sched_held+0x3e/0x70 [ 54.900058][ T5084] ? trace_kmalloc+0xb4/0x110 [ 54.904828][ T5084] ? __kmalloc_node+0x77/0xd0 [ 54.909602][ T5084] ? __xdp_rxq_info_reg+0x18d/0x340 [ 54.914899][ T5084] ? alloc_netdev_mqs+0xdce/0x1250 [ 54.920027][ T5084] ? rtnl_create_link+0x9d8/0xee0 [ 54.925068][ T5084] ? veth_set_features+0x1e0/0x1e0 [ 54.930220][ T5084] __rtnl_newlink+0x10c2/0x1840 [ 54.935282][ T5084] ? find_held_lock+0x2d/0x110 [ 54.940102][ T5084] ? rtnl_link_unregister+0x250/0x250 [ 54.945509][ T5084] ? __kmem_cache_alloc_node+0x48/0x320 [ 54.951271][ T5084] rtnl_newlink+0x68/0xa0 [ 54.955704][ T5084] ? __rtnl_newlink+0x1840/0x1840 [ 54.960869][ T5084] rtnetlink_rcv_msg+0x43d/0xd50 [ 54.965891][ T5084] ? rtnl_stats_set+0x4d0/0x4d0 [ 54.970968][ T5084] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 54.977076][ T5084] ? do_syscall_64+0x39/0xb0 [ 54.981779][ T5084] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.987882][ T5084] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 54.994876][ T5084] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 55.001064][ T5084] netlink_rcv_skb+0x165/0x440 [ 55.005957][ T5084] ? rtnl_stats_set+0x4d0/0x4d0 [ 55.011980][ T5084] ? netlink_ack+0x1360/0x1360 [ 55.017066][ T5084] ? netlink_deliver_tap+0x1b1/0xcf0 [ 55.022460][ T5084] netlink_unicast+0x547/0x7f0 [ 55.027656][ T5084] ? netlink_attachskb+0x890/0x890 [ 55.032803][ T5084] ? __virt_addr_valid+0x61/0x2e0 [ 55.038203][ T5084] ? __phys_addr_symbol+0x30/0x70 [ 55.043332][ T5084] ? __check_object_size+0x333/0x6e0 [ 55.048981][ T5084] netlink_sendmsg+0x925/0xe30 [ 55.054029][ T5084] ? netlink_unicast+0x7f0/0x7f0 [ 55.059077][ T5084] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 55.064552][ T5084] ? netlink_unicast+0x7f0/0x7f0 [ 55.069504][ T5084] sock_sendmsg+0xde/0x190 [ 55.073939][ T5084] __sys_sendto+0x23a/0x340 [ 55.078461][ T5084] ? __ia32_sys_getpeername+0xb0/0xb0 [ 55.083881][ T5084] ? restore_fpregs_from_fpstate+0xc1/0x1c0 [ 55.089916][ T5084] __x64_sys_sendto+0xe1/0x1b0 [ 55.094804][ T5084] ? syscall_enter_from_user_mode+0x26/0xb0 [ 55.100817][ T5084] do_syscall_64+0x39/0xb0 [ 55.105256][ T5084] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.111166][ T5084] RIP: 0033:0x7fd25883e12c [ 55.115695][ T5084] 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 [ 55.135433][ T5084] RSP: 002b:00007ffe2db19ce0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 55.143859][ T5084] RAX: ffffffffffffffda RBX: 00007fd2594d4620 RCX: 00007fd25883e12c [ 55.152810][ T5084] RDX: 000000000000002c RSI: 00007fd2594d4670 RDI: 0000000000000003 [ 55.160799][ T5084] RBP: 0000000000000000 R08: 00007ffe2db19d34 R09: 000000000000000c [ 55.168796][ T5084] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 55.176773][ T5084] R13: 00007fd2594d4670 R14: 0000000000000003 R15: 0000000000000000 [ 55.184939][ T5084] [ 55.213427][ T5084] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.221868][ T5084] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.229602][ T5084] bridge_slave_0: entered allmulticast mode [ 55.236360][ T5084] bridge_slave_0: entered promiscuous mode [ 55.246085][ T5084] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.253971][ T5084] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.262916][ T5084] bridge_slave_1: entered allmulticast mode [ 55.269722][ T5084] bridge_slave_1: entered promiscuous mode [ 55.291949][ T5084] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.303617][ T5084] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.327063][ T5084] team0: Port device team_slave_0 added [ 55.335109][ T5084] team0: Port device team_slave_1 added [ 55.353721][ T5084] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 55.360841][ T5084] 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. [ 55.387132][ T5084] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 55.399803][ T5084] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 55.406778][ T5084] 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. [ 55.433201][ T5084] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 55.464451][ T5084] hsr_slave_0: entered promiscuous mode [ 55.471122][ T5084] hsr_slave_1: entered promiscuous mode [ 55.557179][ T5084] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 55.569018][ T5084] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 55.578177][ T5084] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 55.587438][ T5084] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 55.610083][ T5084] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.617719][ T5084] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.625760][ T5084] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.633490][ T5084] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.660402][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.669203][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.704280][ T5084] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.716089][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.725834][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.738017][ T5084] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.747189][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 55.756445][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 55.765026][ T14] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.772130][ T14] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.788590][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 55.797190][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 55.806203][ T5094] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.813348][ T5094] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.822029][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 55.831797][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 55.844643][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 55.853454][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 55.863293][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 55.880054][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 55.889291][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 55.898085][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 55.906622][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 55.918962][ T5084] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 55.932531][ T5084] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 55.941029][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 55.950298][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 56.080001][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 56.089128][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 56.100191][ T5084] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 56.118273][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 56.126936][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 56.146775][ T5084] veth0_vlan: entered promiscuous mode [ 56.153381][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 56.162425][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 56.171837][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 56.180962][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 56.193206][ T5084] veth1_vlan: entered promiscuous mode [ 56.212505][ T5084] veth0_macvtap: entered promiscuous mode [ 56.221348][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 56.230304][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 56.239433][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 56.249971][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 56.258902][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 56.270933][ T5084] veth1_macvtap: entered promiscuous mode [ 56.287096][ T5084] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 56.294745][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 56.303555][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 56.312452][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 56.325531][ T5084] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 56.333900][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 56.343594][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 56.357034][ T5084] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.366622][ T5084] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.375932][ T5084] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.385475][ T5084] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.451655][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.468098][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.476686][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 56.496620][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.506322][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.516358][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2023/03/15 07:30:07 building call list... [ 56.619603][ T48] Bluetooth: hci0: command 0x0409 tx timeout executing program [ 58.459382][ T5075] damon-dbgfs: DAMON debugfs interface is deprecated, so users should move to DAMON_SYSFS. If you cannot, please report your usecase to damon@lists.linux.dev and linux-mm@kvack.org. [ 58.653650][ T5075] can: request_module (can-proto-0) failed. [ 58.689521][ T5075] can: request_module (can-proto-0) failed. [ 58.725147][ T5075] can: request_module (can-proto-0) failed. [ 59.566252][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program