DUID 00:04:87:e9:86:9c:37:5a:86:1a:3e:7a:33:57:0c:76:7d:1a forked to background, child pid 4659 [ 38.289043][ T4660] 8021q: adding VLAN 0 to HW filter on device bond0 [ 38.316639][ T4660] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.9' (ECDSA) to the list of known hosts. 2023/03/13 23:32:04 fuzzer started 2023/03/13 23:32:04 connecting to host at 10.128.0.169:38839 2023/03/13 23:32:04 checking machine... 2023/03/13 23:32:04 checking revisions... 2023/03/13 23:32:04 testing simple program... syzkaller login: [ 63.919325][ T5084] cgroup: Unknown subsys name 'net' [ 64.060739][ T5084] cgroup: Unknown subsys name 'rlimit' [ 64.161862][ T5075] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5075 'syz-fuzzer' [ 64.292369][ T5088] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 64.300647][ T5088] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 64.309554][ T5088] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 64.318676][ T5088] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 64.326633][ T5088] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 64.334552][ T5088] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 64.460091][ T5086] chnl_net:caif_netlink_parms(): no params data found [ 64.486538][ T5086] [ 64.488904][ T5086] ============================= [ 64.494305][ T5086] WARNING: suspicious RCU usage [ 64.499156][ T5086] 6.3.0-rc1-syzkaller-00146-g22a825c541d7 #0 Not tainted [ 64.506325][ T5086] ----------------------------- [ 64.511175][ T5086] drivers/net/veth.c:1265 suspicious rcu_dereference_check() usage! [ 64.519228][ T5086] [ 64.519228][ T5086] other info that might help us debug this: [ 64.519228][ T5086] [ 64.529527][ T5086] [ 64.529527][ T5086] rcu_scheduler_active = 2, debug_locks = 1 [ 64.537650][ T5086] 1 lock held by syz-executor.0/5086: [ 64.543038][ T5086] #0: ffffffff8e102ec8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 [ 64.552572][ T5086] [ 64.552572][ T5086] stack backtrace: [ 64.558623][ T5086] CPU: 0 PID: 5086 Comm: syz-executor.0 Not tainted 6.3.0-rc1-syzkaller-00146-g22a825c541d7 #0 [ 64.569015][ T5086] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 64.579093][ T5086] Call Trace: [ 64.582386][ T5086] [ 64.585413][ T5086] dump_stack_lvl+0x136/0x150 [ 64.590113][ T5086] lockdep_rcu_suspicious+0x208/0x3a0 [ 64.595497][ T5086] veth_set_xdp_features+0x1c7/0x250 [ 64.600794][ T5086] veth_newlink+0x729/0x9d0 [ 64.605318][ T5086] ? veth_set_features+0x1e0/0x1e0 [ 64.610522][ T5086] ? __rtnl_newlink+0xfd4/0x1840 [ 64.615587][ T5086] ? rtnl_newlink+0x68/0xa0 [ 64.620283][ T5086] ? rtnetlink_rcv_msg+0x43d/0xd50 [ 64.625412][ T5086] ? netlink_rcv_skb+0x165/0x440 [ 64.630365][ T5086] ? netlink_unicast+0x547/0x7f0 [ 64.635491][ T5086] ? netlink_sendmsg+0x925/0xe30 [ 64.640528][ T5086] ? sock_sendmsg+0xde/0x190 [ 64.645139][ T5086] ? __sys_sendto+0x23a/0x340 [ 64.649856][ T5086] ? __x64_sys_sendto+0xe1/0x1b0 [ 64.654897][ T5086] ? do_syscall_64+0x39/0xb0 [ 64.659526][ T5086] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 64.665641][ T5086] ? find_held_lock+0x2d/0x110 [ 64.670447][ T5086] ? __kmem_cache_alloc_node+0x48/0x320 [ 64.676032][ T5086] ? kvmalloc_node+0xa2/0x1a0 [ 64.680747][ T5086] ? rcu_read_lock_sched_held+0x3e/0x70 [ 64.686498][ T5086] ? trace_kmalloc+0xb4/0x110 [ 64.691355][ T5086] ? __kmalloc_node+0x77/0xd0 [ 64.696133][ T5086] ? __xdp_rxq_info_reg+0x18d/0x340 [ 64.701472][ T5086] ? alloc_netdev_mqs+0xdce/0x1250 [ 64.706644][ T5086] ? rtnl_create_link+0x9d8/0xee0 [ 64.711801][ T5086] ? veth_set_features+0x1e0/0x1e0 [ 64.716936][ T5086] __rtnl_newlink+0x10c2/0x1840 [ 64.721827][ T5086] ? rtnl_link_unregister+0x250/0x250 [ 64.727394][ T5086] rtnl_newlink+0x68/0xa0 [ 64.731880][ T5086] ? __rtnl_newlink+0x1840/0x1840 [ 64.737002][ T5086] rtnetlink_rcv_msg+0x43d/0xd50 [ 64.741991][ T5086] ? rtnl_stats_set+0x4d0/0x4d0 [ 64.746882][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 64.752963][ T5086] ? do_syscall_64+0x39/0xb0 [ 64.757564][ T5086] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 64.763737][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 64.769817][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 64.775819][ T5086] netlink_rcv_skb+0x165/0x440 [ 64.780611][ T5086] ? rtnl_stats_set+0x4d0/0x4d0 [ 64.785485][ T5086] ? netlink_ack+0x1360/0x1360 [ 64.790288][ T5086] ? netlink_deliver_tap+0x1b1/0xcf0 [ 64.795688][ T5086] netlink_unicast+0x547/0x7f0 [ 64.800491][ T5086] ? netlink_attachskb+0x890/0x890 [ 64.805713][ T5086] ? __virt_addr_valid+0x61/0x2e0 [ 64.810881][ T5086] ? __phys_addr_symbol+0x30/0x70 [ 64.816048][ T5086] ? __check_object_size+0x333/0x6e0 [ 64.821447][ T5086] netlink_sendmsg+0x925/0xe30 [ 64.826248][ T5086] ? netlink_unicast+0x7f0/0x7f0 [ 64.831210][ T5086] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 64.836612][ T5086] ? netlink_unicast+0x7f0/0x7f0 [ 64.841936][ T5086] sock_sendmsg+0xde/0x190 [ 64.846398][ T5086] __sys_sendto+0x23a/0x340 [ 64.850938][ T5086] ? __ia32_sys_getpeername+0xb0/0xb0 [ 64.856711][ T5086] ? restore_fpregs_from_fpstate+0xc1/0x1c0 [ 64.862948][ T5086] __x64_sys_sendto+0xe1/0x1b0 [ 64.867764][ T5086] ? syscall_enter_from_user_mode+0x26/0xb0 [ 64.873687][ T5086] do_syscall_64+0x39/0xb0 [ 64.878214][ T5086] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 64.884200][ T5086] RIP: 0033:0x7fb58fe3e12c [ 64.888851][ T5086] 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 [ 64.908497][ T5086] RSP: 002b:00007fff306729e0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 64.916930][ T5086] RAX: ffffffffffffffda RBX: 00007fb590ad4620 RCX: 00007fb58fe3e12c [ 64.924908][ T5086] RDX: 000000000000002c RSI: 00007fb590ad4670 RDI: 0000000000000003 [ 64.932893][ T5086] RBP: 0000000000000000 R08: 00007fff30672a34 R09: 000000000000000c [ 64.940959][ T5086] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 64.949110][ T5086] R13: 00007fb590ad4670 R14: 0000000000000003 R15: 0000000000000000 [ 64.957461][ T5086] [ 64.990522][ T5086] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.998757][ T5086] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.006599][ T5086] bridge_slave_0: entered allmulticast mode [ 65.013238][ T5086] bridge_slave_0: entered promiscuous mode [ 65.022462][ T5086] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.030535][ T5086] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.038118][ T5086] bridge_slave_1: entered allmulticast mode [ 65.045424][ T5086] bridge_slave_1: entered promiscuous mode [ 65.069224][ T5086] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.080607][ T5086] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.105895][ T5086] team0: Port device team_slave_0 added [ 65.114942][ T5086] team0: Port device team_slave_1 added [ 65.133209][ T5086] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 65.140596][ T5086] 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. [ 65.166790][ T5086] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 65.179988][ T5086] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 65.187241][ T5086] 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. [ 65.213739][ T5086] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 65.246902][ T5086] hsr_slave_0: entered promiscuous mode [ 65.253404][ T5086] hsr_slave_1: entered promiscuous mode [ 65.350213][ T5086] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.362188][ T5086] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.372101][ T5086] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.382376][ T5086] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.406655][ T5086] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.413901][ T5086] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.421945][ T5086] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.429138][ T5086] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.455628][ T14] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.467438][ T14] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.504804][ T5086] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.518716][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.529883][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.542525][ T5086] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.554164][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.562943][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.572725][ T14] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.580446][ T14] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.606614][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.616129][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.625072][ T5097] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.632176][ T5097] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.640097][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.649823][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.659053][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.668849][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.677650][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.686522][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.695793][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.704570][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.717149][ T5086] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 65.732886][ T5086] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.745935][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.755505][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.766527][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.909958][ T5086] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.918456][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.926273][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.944110][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 65.953070][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 65.975383][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 65.986256][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.995408][ T5086] veth0_vlan: entered promiscuous mode [ 66.005722][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.013536][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.025056][ T5086] veth1_vlan: entered promiscuous mode [ 66.047676][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.056773][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.066310][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 66.075070][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.086249][ T5086] veth0_macvtap: entered promiscuous mode [ 66.099832][ T5086] veth1_macvtap: entered promiscuous mode [ 66.116156][ T5086] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.125763][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.136050][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 66.144465][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 66.153229][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.165879][ T5086] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.175321][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.185037][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.196130][ T5086] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.206950][ T5086] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.216790][ T5086] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.226719][ T5086] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.294678][ T2900] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.302711][ T2900] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.326027][ T2494] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.337059][ T2830] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.345761][ T2830] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.357335][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2023/03/13 23:32:07 building call list... [ 66.414891][ T4400] Bluetooth: hci0: command 0x0409 tx timeout executing program [ 68.369785][ T5078] 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. [ 68.578958][ T5078] can: request_module (can-proto-0) failed. [ 68.615916][ T5078] can: request_module (can-proto-0) failed. [ 68.649660][ T5078] can: request_module (can-proto-0) failed. [ 69.212879][ T2830] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program