[ 38.002022][ T4665] dhcpcd-run-hook (4665) used greatest stack depth: 22320 bytes left forked to background, child pid 4661 [ 40.389403][ T4662] 8021q: adding VLAN 0 to HW filter on device bond0 [ 40.413447][ T4662] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.198' (ECDSA) to the list of known hosts. 2023/03/14 08:43:17 fuzzer started 2023/03/14 08:43:17 connecting to host at 10.128.0.169:33589 2023/03/14 08:43:17 checking machine... 2023/03/14 08:43:17 checking revisions... 2023/03/14 08:43:17 testing simple program... syzkaller login: [ 66.506965][ T5093] cgroup: Unknown subsys name 'net' [ 66.659671][ T5093] cgroup: Unknown subsys name 'rlimit' [ 66.781477][ T5087] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5087 'syz-fuzzer' [ 66.902886][ T5096] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 66.911176][ T5096] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 66.919787][ T5096] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 66.929064][ T5096] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 66.937365][ T5096] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 66.945742][ T5096] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 67.080492][ T5095] chnl_net:caif_netlink_parms(): no params data found [ 67.105732][ T5095] [ 67.108124][ T5095] ============================= [ 67.113642][ T5095] WARNING: suspicious RCU usage [ 67.118598][ T5095] 6.3.0-rc2-next-20230314-syzkaller #0 Not tainted [ 67.125449][ T5095] ----------------------------- [ 67.130375][ T5095] drivers/net/veth.c:1265 suspicious rcu_dereference_check() usage! [ 67.138537][ T5095] [ 67.138537][ T5095] other info that might help us debug this: [ 67.138537][ T5095] [ 67.149053][ T5095] [ 67.149053][ T5095] rcu_scheduler_active = 2, debug_locks = 1 [ 67.157287][ T5095] 1 lock held by syz-executor.0/5095: [ 67.162739][ T5095] #0: ffffffff8e109e48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 [ 67.172397][ T5095] [ 67.172397][ T5095] stack backtrace: [ 67.178321][ T5095] CPU: 0 PID: 5095 Comm: syz-executor.0 Not tainted 6.3.0-rc2-next-20230314-syzkaller #0 [ 67.188145][ T5095] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 67.198389][ T5095] Call Trace: [ 67.201667][ T5095] [ 67.204693][ T5095] dump_stack_lvl+0x136/0x150 [ 67.209382][ T5095] lockdep_rcu_suspicious+0x208/0x3a0 [ 67.215019][ T5095] veth_set_xdp_features+0x1c7/0x250 [ 67.220343][ T5095] veth_newlink+0x729/0x9d0 [ 67.225117][ T5095] ? veth_set_features+0x1e0/0x1e0 [ 67.230224][ T5095] ? __rtnl_newlink+0xfd4/0x1840 [ 67.235172][ T5095] ? rtnl_newlink+0x68/0xa0 [ 67.239695][ T5095] ? rtnetlink_rcv_msg+0x43d/0xd50 [ 67.244815][ T5095] ? netlink_rcv_skb+0x165/0x440 [ 67.249759][ T5095] ? netlink_unicast+0x547/0x7f0 [ 67.254703][ T5095] ? netlink_sendmsg+0x925/0xe30 [ 67.259825][ T5095] ? sock_sendmsg+0xde/0x190 [ 67.264423][ T5095] ? __sys_sendto+0x23a/0x340 [ 67.269114][ T5095] ? __x64_sys_sendto+0xe1/0x1b0 [ 67.274061][ T5095] ? do_syscall_64+0x39/0xb0 [ 67.278670][ T5095] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 67.284766][ T5095] ? find_held_lock+0x2d/0x110 [ 67.289633][ T5095] ? __kmem_cache_alloc_node+0x48/0x320 [ 67.295564][ T5095] ? kvmalloc_node+0xa2/0x1a0 [ 67.300266][ T5095] ? rcu_read_lock_sched_held+0x3e/0x70 [ 67.305858][ T5095] ? trace_kmalloc+0xae/0x100 [ 67.310547][ T5095] ? __kmalloc_node+0x77/0xd0 [ 67.315252][ T5095] ? __xdp_rxq_info_reg+0x18d/0x340 [ 67.320858][ T5095] ? alloc_netdev_mqs+0xdce/0x1250 [ 67.326016][ T5095] ? rtnl_create_link+0x9d8/0xee0 [ 67.331139][ T5095] ? veth_set_features+0x1e0/0x1e0 [ 67.336445][ T5095] __rtnl_newlink+0x10c2/0x1840 [ 67.341329][ T5095] ? find_held_lock+0x2d/0x110 [ 67.346113][ T5095] ? rtnl_link_unregister+0x250/0x250 [ 67.351497][ T5095] ? __kmem_cache_alloc_node+0x48/0x320 [ 67.357096][ T5095] rtnl_newlink+0x68/0xa0 [ 67.361697][ T5095] ? __rtnl_newlink+0x1840/0x1840 [ 67.366828][ T5095] rtnetlink_rcv_msg+0x43d/0xd50 [ 67.372050][ T5095] ? rtnl_stats_set+0x4d0/0x4d0 [ 67.376919][ T5095] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 67.383239][ T5095] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 67.389349][ T5095] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 67.395466][ T5095] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 67.401512][ T5095] ? print_usage_bug.part.0+0x660/0x660 [ 67.407265][ T5095] netlink_rcv_skb+0x165/0x440 [ 67.412058][ T5095] ? rtnl_stats_set+0x4d0/0x4d0 [ 67.416927][ T5095] ? netlink_ack+0x1360/0x1360 [ 67.421728][ T5095] ? netlink_deliver_tap+0x1b1/0xcf0 [ 67.427147][ T5095] netlink_unicast+0x547/0x7f0 [ 67.431929][ T5095] ? netlink_attachskb+0x890/0x890 [ 67.437139][ T5095] ? __virt_addr_valid+0x61/0x2e0 [ 67.442276][ T5095] ? __phys_addr_symbol+0x30/0x70 [ 67.447349][ T5095] ? __check_object_size+0x333/0x6e0 [ 67.452846][ T5095] netlink_sendmsg+0x925/0xe30 [ 67.457901][ T5095] ? netlink_unicast+0x7f0/0x7f0 [ 67.462996][ T5095] ? __might_fault+0xb2/0x190 [ 67.467913][ T5095] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 67.473479][ T5095] ? netlink_unicast+0x7f0/0x7f0 [ 67.478602][ T5095] sock_sendmsg+0xde/0x190 [ 67.483039][ T5095] __sys_sendto+0x23a/0x340 [ 67.487833][ T5095] ? __ia32_sys_getpeername+0xb0/0xb0 [ 67.493251][ T5095] ? xfd_validate_state+0x5d/0x180 [ 67.498419][ T5095] __x64_sys_sendto+0xe1/0x1b0 [ 67.503322][ T5095] ? syscall_enter_from_user_mode+0x26/0xb0 [ 67.509305][ T5095] do_syscall_64+0x39/0xb0 [ 67.514148][ T5095] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 67.520517][ T5095] RIP: 0033:0x7fcaa8e3e12c [ 67.524945][ T5095] 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 [ 67.545550][ T5095] RSP: 002b:00007fffe1bd7a90 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 67.554273][ T5095] RAX: ffffffffffffffda RBX: 00007fcaa9ad4620 RCX: 00007fcaa8e3e12c [ 67.562633][ T5095] RDX: 000000000000002c RSI: 00007fcaa9ad4670 RDI: 0000000000000003 [ 67.571114][ T5095] RBP: 0000000000000000 R08: 00007fffe1bd7ae4 R09: 000000000000000c [ 67.579114][ T5095] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 67.587097][ T5095] R13: 00007fcaa9ad4670 R14: 0000000000000003 R15: 0000000000000000 [ 67.595274][ T5095] [ 67.629825][ T5095] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.638018][ T5095] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.645746][ T5095] bridge_slave_0: entered allmulticast mode [ 67.653195][ T5095] bridge_slave_0: entered promiscuous mode [ 67.662920][ T5095] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.670279][ T5095] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.680330][ T5095] bridge_slave_1: entered allmulticast mode [ 67.687317][ T5095] bridge_slave_1: entered promiscuous mode [ 67.714218][ T5095] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.726059][ T5095] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.754606][ T5095] team0: Port device team_slave_0 added [ 67.765908][ T5095] team0: Port device team_slave_1 added [ 67.790566][ T5095] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.797674][ T5095] 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. [ 67.824736][ T5095] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.839249][ T5095] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.846830][ T5095] 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. [ 67.874870][ T5095] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.907761][ T5095] hsr_slave_0: entered promiscuous mode [ 67.914806][ T5095] hsr_slave_1: entered promiscuous mode [ 68.021229][ T5095] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 68.034088][ T5095] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.044694][ T5095] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.057060][ T5095] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.136098][ T5095] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.150190][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.160256][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.173830][ T5095] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.186667][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 68.196796][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.206674][ T9] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.214103][ T9] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.237464][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 68.246186][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 68.255489][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.264474][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.271852][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.280617][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 68.290103][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 68.309981][ T5095] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 68.323947][ T5095] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 68.338371][ T5106] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 68.348027][ T5106] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.357432][ T5106] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 68.366822][ T5106] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.375616][ T5106] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 68.384408][ T5106] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.395067][ T5106] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 68.403990][ T5106] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.414392][ T5106] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.422879][ T5106] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.585761][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.594078][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.606980][ T5095] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.633580][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 68.644057][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.662906][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 68.671988][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.684479][ T5095] veth0_vlan: entered promiscuous mode [ 68.693429][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.702024][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.714906][ T5095] veth1_vlan: entered promiscuous mode [ 68.736447][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 68.745603][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 68.755225][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 68.764290][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 68.774837][ T5095] veth0_macvtap: entered promiscuous mode [ 68.789478][ T5095] veth1_macvtap: entered promiscuous mode [ 68.805673][ T5095] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.815081][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 68.824638][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 68.833405][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 68.842842][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 68.856730][ T5095] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.867769][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 68.877425][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 68.890592][ T5095] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.900963][ T5095] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.911462][ T5095] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.920537][ T5095] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.991314][ T42] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 69.010373][ T42] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 69.022924][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 69.032971][ T1019] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 69.033428][ T4403] Bluetooth: hci0: command 0x0409 tx timeout [ 69.041035][ T1019] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 69.060010][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2023/03/14 08:43:20 building call list... executing program [ 71.259047][ T5091] 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. [ 71.471815][ T5091] can: request_module (can-proto-0) failed. [ 71.510874][ T5091] can: request_module (can-proto-0) failed. [ 71.551863][ T5091] can: request_module (can-proto-0) failed. [ 71.663709][ T4274] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 73.990494][ T4274] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.081103][ T4274] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 74.156943][ T4274] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0