DUID 00:04:63:3c:db:c8:83:d4:2a:b1:e5:3f:fc:31:79:55:3b:bc forked to background, child pid 4657 [ 38.614817][ T4658] 8021q: adding VLAN 0 to HW filter on device bond0 [ 38.625870][ T4658] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.140' (ECDSA) to the list of known hosts. 2023/03/15 02:22:47 fuzzer started 2023/03/15 02:22:47 connecting to host at 10.128.0.169:44541 2023/03/15 02:22:47 checking machine... 2023/03/15 02:22:47 checking revisions... 2023/03/15 02:22:47 testing simple program... syzkaller login: [ 64.214205][ T5085] cgroup: Unknown subsys name 'net' [ 64.345479][ T5085] cgroup: Unknown subsys name 'rlimit' [ 64.436909][ T5077] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5077 'syz-fuzzer' [ 64.561138][ T48] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 64.569694][ T48] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 64.578029][ T48] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 64.586253][ T48] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 64.594213][ T48] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 64.602233][ T48] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 64.736061][ T5087] chnl_net:caif_netlink_parms(): no params data found [ 64.758608][ T5087] [ 64.760971][ T5087] ============================= [ 64.766549][ T5087] WARNING: suspicious RCU usage [ 64.771414][ T5087] 6.3.0-rc2-next-20230315-syzkaller #0 Not tainted [ 64.778162][ T5087] ----------------------------- [ 64.783222][ T5087] drivers/net/veth.c:1265 suspicious rcu_dereference_check() usage! [ 64.791859][ T5087] [ 64.791859][ T5087] other info that might help us debug this: [ 64.791859][ T5087] [ 64.803340][ T5087] [ 64.803340][ T5087] rcu_scheduler_active = 2, debug_locks = 1 [ 64.812845][ T5087] 1 lock held by syz-executor.0/5087: [ 64.818551][ T5087] #0: ffffffff8e10a2c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 [ 64.828152][ T5087] [ 64.828152][ T5087] stack backtrace: [ 64.834771][ T5087] CPU: 0 PID: 5087 Comm: syz-executor.0 Not tainted 6.3.0-rc2-next-20230315-syzkaller #0 [ 64.845020][ T5087] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 64.855166][ T5087] Call Trace: [ 64.858452][ T5087] [ 64.861392][ T5087] dump_stack_lvl+0x136/0x150 [ 64.866099][ T5087] lockdep_rcu_suspicious+0x208/0x3a0 [ 64.872668][ T5087] veth_set_xdp_features+0x1c7/0x250 [ 64.878069][ T5087] veth_newlink+0x729/0x9d0 [ 64.882683][ T5087] ? veth_set_features+0x1e0/0x1e0 [ 64.887981][ T5087] ? __rtnl_newlink+0xfd4/0x1840 [ 64.893045][ T5087] ? rtnl_newlink+0x68/0xa0 [ 64.897826][ T5087] ? rtnetlink_rcv_msg+0x43d/0xd50 [ 64.902962][ T5087] ? netlink_rcv_skb+0x165/0x440 [ 64.907913][ T5087] ? netlink_unicast+0x547/0x7f0 [ 64.912872][ T5087] ? netlink_sendmsg+0x925/0xe30 [ 64.917909][ T5087] ? sock_sendmsg+0xde/0x190 [ 64.922522][ T5087] ? __sys_sendto+0x23a/0x340 [ 64.927298][ T5087] ? __x64_sys_sendto+0xe1/0x1b0 [ 64.932244][ T5087] ? do_syscall_64+0x39/0xb0 [ 64.936840][ T5087] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 64.942954][ T5087] ? find_held_lock+0x2d/0x110 [ 64.947732][ T5087] ? __kmem_cache_alloc_node+0x48/0x320 [ 64.953313][ T5087] ? kvmalloc_node+0xa2/0x1a0 [ 64.958010][ T5087] ? rcu_read_lock_sched_held+0x3e/0x70 [ 64.963570][ T5087] ? trace_kmalloc+0xae/0x100 [ 64.968393][ T5087] ? __kmalloc_node+0x77/0xd0 [ 64.973193][ T5087] ? __xdp_rxq_info_reg+0x18d/0x340 [ 64.978466][ T5087] ? alloc_netdev_mqs+0xdce/0x1250 [ 64.983631][ T5087] ? rtnl_create_link+0x9d8/0xee0 [ 64.988782][ T5087] ? veth_set_features+0x1e0/0x1e0 [ 64.994020][ T5087] __rtnl_newlink+0x10c2/0x1840 [ 64.998896][ T5087] ? find_held_lock+0x2d/0x110 [ 65.003684][ T5087] ? rtnl_link_unregister+0x250/0x250 [ 65.009071][ T5087] ? __kmem_cache_alloc_node+0x48/0x320 [ 65.014667][ T5087] rtnl_newlink+0x68/0xa0 [ 65.019005][ T5087] ? __rtnl_newlink+0x1840/0x1840 [ 65.024037][ T5087] rtnetlink_rcv_msg+0x43d/0xd50 [ 65.028987][ T5087] ? rtnl_stats_set+0x4d0/0x4d0 [ 65.033845][ T5087] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 65.039838][ T5087] ? lock_downgrade+0x690/0x690 [ 65.044705][ T5087] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 65.050709][ T5087] netlink_rcv_skb+0x165/0x440 [ 65.055755][ T5087] ? rtnl_stats_set+0x4d0/0x4d0 [ 65.060709][ T5087] ? netlink_ack+0x1360/0x1360 [ 65.065501][ T5087] ? netlink_deliver_tap+0x1b1/0xcf0 [ 65.072390][ T5087] netlink_unicast+0x547/0x7f0 [ 65.077190][ T5087] ? netlink_attachskb+0x890/0x890 [ 65.082601][ T5087] ? __virt_addr_valid+0x61/0x2e0 [ 65.087768][ T5087] ? __phys_addr_symbol+0x30/0x70 [ 65.092812][ T5087] ? __check_object_size+0x333/0x6e0 [ 65.098211][ T5087] netlink_sendmsg+0x925/0xe30 [ 65.103169][ T5087] ? netlink_unicast+0x7f0/0x7f0 [ 65.108229][ T5087] ? __might_fault+0xb2/0x190 [ 65.113014][ T5087] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 65.118314][ T5087] ? netlink_unicast+0x7f0/0x7f0 [ 65.123259][ T5087] sock_sendmsg+0xde/0x190 [ 65.127692][ T5087] __sys_sendto+0x23a/0x340 [ 65.132216][ T5087] ? __ia32_sys_getpeername+0xb0/0xb0 [ 65.137641][ T5087] ? xfd_validate_state+0x5d/0x180 [ 65.142786][ T5087] __x64_sys_sendto+0xe1/0x1b0 [ 65.147575][ T5087] ? syscall_enter_from_user_mode+0x26/0xb0 [ 65.153498][ T5087] do_syscall_64+0x39/0xb0 [ 65.157924][ T5087] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 65.163834][ T5087] RIP: 0033:0x7f0e7803e12c [ 65.168274][ T5087] 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 [ 65.190264][ T5087] RSP: 002b:00007ffe9b5898d0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 65.198721][ T5087] RAX: ffffffffffffffda RBX: 00007f0e78cd4620 RCX: 00007f0e7803e12c [ 65.206793][ T5087] RDX: 000000000000002c RSI: 00007f0e78cd4670 RDI: 0000000000000003 [ 65.214794][ T5087] RBP: 0000000000000000 R08: 00007ffe9b589924 R09: 000000000000000c [ 65.222777][ T5087] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 65.230771][ T5087] R13: 00007f0e78cd4670 R14: 0000000000000003 R15: 0000000000000000 [ 65.238779][ T5087] [ 65.274383][ T5087] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.283269][ T5087] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.291273][ T5087] bridge_slave_0: entered allmulticast mode [ 65.298374][ T5087] bridge_slave_0: entered promiscuous mode [ 65.306983][ T5087] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.314118][ T5087] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.322957][ T5087] bridge_slave_1: entered allmulticast mode [ 65.329723][ T5087] bridge_slave_1: entered promiscuous mode [ 65.351254][ T5087] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.363081][ T5087] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.390261][ T5087] team0: Port device team_slave_0 added [ 65.399353][ T5087] team0: Port device team_slave_1 added [ 65.418134][ T5087] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 65.425176][ T5087] 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. [ 65.451260][ T5087] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 65.463910][ T5087] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 65.472124][ T5087] 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. [ 65.499930][ T5087] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 65.531152][ T5087] hsr_slave_0: entered promiscuous mode [ 65.537966][ T5087] hsr_slave_1: entered promiscuous mode [ 65.630083][ T5087] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.641278][ T5087] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.650884][ T5087] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.660855][ T5087] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.688523][ T5087] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.695828][ T5087] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.703720][ T5087] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.710951][ T5087] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.748935][ T900] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.760496][ T900] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.781304][ T5087] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.794284][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.803572][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.815741][ T5087] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.824872][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.834320][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.843488][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.850602][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.862669][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.872358][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.881312][ T5098] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.888496][ T5098] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.899117][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.916765][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.925516][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.934257][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.943384][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.952339][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.961096][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.976816][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.987230][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.997610][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 66.006160][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.018651][ T5087] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.159840][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.168437][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.182484][ T5087] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.201325][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 66.210351][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 66.228017][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 66.237879][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 66.249118][ T5087] veth0_vlan: entered promiscuous mode [ 66.255373][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 66.263178][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 66.277570][ T5087] veth1_vlan: entered promiscuous mode [ 66.296933][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 66.305003][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 66.314261][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 66.323101][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 66.335848][ T5087] veth0_macvtap: entered promiscuous mode [ 66.344150][ T5087] veth1_macvtap: entered promiscuous mode [ 66.358940][ T5087] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.366882][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 66.376988][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 66.385972][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 66.394874][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 66.408655][ T5087] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.416567][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 66.426503][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 66.440506][ T5087] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.450333][ T5087] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.459101][ T5087] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.469525][ T5087] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.532024][ T12] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.560380][ T12] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.565262][ T41] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.571591][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 66.578740][ T41] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.593266][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2023/03/15 02:22:50 building call list... [ 66.637359][ T4400] Bluetooth: hci0: command 0x0409 tx timeout executing program [ 68.717282][ T5074] 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. [ 68.919836][ T5074] can: request_module (can-proto-0) failed. [ 68.958736][ T5074] can: request_module (can-proto-0) failed. [ 68.997557][ T5074] can: request_module (can-proto-0) failed. [ 69.914595][ T12] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program