DUID 00:04:87:e9:86:9c:37:5a:86:1a:3e:7a:33:57:0c:76:7d:1a forked to background, child pid 4657 [ 32.459693][ T4658] 8021q: adding VLAN 0 to HW filter on device bond0 [ 32.471410][ T4658] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.188' (ECDSA) to the list of known hosts. 2023/03/14 00:16:21 fuzzer started 2023/03/14 00:16:21 connecting to host at 10.128.0.169:39989 2023/03/14 00:16:21 checking machine... 2023/03/14 00:16:21 checking revisions... 2023/03/14 00:16:21 testing simple program... syzkaller login: [ 50.767989][ T5080] cgroup: Unknown subsys name 'net' [ 50.871142][ T5080] cgroup: Unknown subsys name 'rlimit' [ 50.940433][ T5077] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5077 'syz-fuzzer' [ 51.041309][ T48] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 51.049482][ T48] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 51.057591][ T48] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 51.066212][ T48] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 51.074857][ T48] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 51.082285][ T48] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 51.191574][ T5082] chnl_net:caif_netlink_parms(): no params data found [ 51.211559][ T5082] [ 51.214312][ T5082] ============================= [ 51.219418][ T5082] WARNING: suspicious RCU usage [ 51.224309][ T5082] 6.3.0-rc1-syzkaller-00147-g1a9dc5610ef8 #0 Not tainted [ 51.231436][ T5082] ----------------------------- [ 51.236484][ T5082] drivers/net/veth.c:1265 suspicious rcu_dereference_check() usage! [ 51.245061][ T5082] [ 51.245061][ T5082] other info that might help us debug this: [ 51.245061][ T5082] [ 51.255928][ T5082] [ 51.255928][ T5082] rcu_scheduler_active = 2, debug_locks = 1 [ 51.264126][ T5082] 1 lock held by syz-executor.0/5082: [ 51.269498][ T5082] #0: ffffffff8e102ec8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 [ 51.279038][ T5082] [ 51.279038][ T5082] stack backtrace: [ 51.285033][ T5082] CPU: 1 PID: 5082 Comm: syz-executor.0 Not tainted 6.3.0-rc1-syzkaller-00147-g1a9dc5610ef8 #0 [ 51.295602][ T5082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 51.305735][ T5082] Call Trace: [ 51.309001][ T5082] [ 51.312059][ T5082] dump_stack_lvl+0x136/0x150 [ 51.316822][ T5082] lockdep_rcu_suspicious+0x208/0x3a0 [ 51.322184][ T5082] veth_set_xdp_features+0x1c7/0x250 [ 51.327633][ T5082] veth_newlink+0x729/0x9d0 [ 51.332298][ T5082] ? veth_set_features+0x1e0/0x1e0 [ 51.337487][ T5082] ? __rtnl_newlink+0xfd4/0x1840 [ 51.342586][ T5082] ? rtnl_newlink+0x68/0xa0 [ 51.347254][ T5082] ? rtnetlink_rcv_msg+0x43d/0xd50 [ 51.352463][ T5082] ? netlink_rcv_skb+0x165/0x440 [ 51.357411][ T5082] ? netlink_unicast+0x547/0x7f0 [ 51.362790][ T5082] ? netlink_sendmsg+0x925/0xe30 [ 51.367733][ T5082] ? sock_sendmsg+0xde/0x190 [ 51.372502][ T5082] ? __sys_sendto+0x23a/0x340 [ 51.377275][ T5082] ? __x64_sys_sendto+0xe1/0x1b0 [ 51.382303][ T5082] ? do_syscall_64+0x39/0xb0 [ 51.386978][ T5082] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.393139][ T5082] ? ___slab_alloc+0xca0/0x1400 [ 51.398361][ T5082] ? lockdep_hardirqs_on+0x7d/0x100 [ 51.403661][ T5082] ? kvmalloc_node+0xa2/0x1a0 [ 51.408427][ T5082] ? __kmem_cache_alloc_node+0x48/0x320 [ 51.414107][ T5082] ? kvmalloc_node+0xa2/0x1a0 [ 51.418781][ T5082] ? rcu_read_lock_sched_held+0x3e/0x70 [ 51.424420][ T5082] ? trace_kmalloc+0xb4/0x110 [ 51.429115][ T5082] ? __kmalloc_node+0x77/0xd0 [ 51.433795][ T5082] ? __xdp_rxq_info_reg+0x18d/0x340 [ 51.439016][ T5082] ? alloc_netdev_mqs+0xdce/0x1250 [ 51.444135][ T5082] ? rtnl_create_link+0x9d8/0xee0 [ 51.449274][ T5082] ? veth_set_features+0x1e0/0x1e0 [ 51.454563][ T5082] __rtnl_newlink+0x10c2/0x1840 [ 51.459430][ T5082] ? find_held_lock+0x2d/0x110 [ 51.464210][ T5082] ? rtnl_link_unregister+0x250/0x250 [ 51.469625][ T5082] ? __kmem_cache_alloc_node+0x48/0x320 [ 51.475377][ T5082] rtnl_newlink+0x68/0xa0 [ 51.479824][ T5082] ? __rtnl_newlink+0x1840/0x1840 [ 51.484942][ T5082] rtnetlink_rcv_msg+0x43d/0xd50 [ 51.489978][ T5082] ? rtnl_stats_set+0x4d0/0x4d0 [ 51.495007][ T5082] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 51.501071][ T5082] ? do_syscall_64+0x39/0xb0 [ 51.505746][ T5082] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.511899][ T5082] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 51.517880][ T5082] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 51.523968][ T5082] netlink_rcv_skb+0x165/0x440 [ 51.528749][ T5082] ? rtnl_stats_set+0x4d0/0x4d0 [ 51.533793][ T5082] ? netlink_ack+0x1360/0x1360 [ 51.538666][ T5082] ? netlink_deliver_tap+0x1b1/0xcf0 [ 51.544053][ T5082] netlink_unicast+0x547/0x7f0 [ 51.548918][ T5082] ? netlink_attachskb+0x890/0x890 [ 51.554034][ T5082] ? __virt_addr_valid+0x61/0x2e0 [ 51.559154][ T5082] ? __phys_addr_symbol+0x30/0x70 [ 51.564322][ T5082] ? __check_object_size+0x333/0x6e0 [ 51.569611][ T5082] netlink_sendmsg+0x925/0xe30 [ 51.574408][ T5082] ? netlink_unicast+0x7f0/0x7f0 [ 51.579569][ T5082] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 51.584943][ T5082] ? netlink_unicast+0x7f0/0x7f0 [ 51.589893][ T5082] sock_sendmsg+0xde/0x190 [ 51.594315][ T5082] __sys_sendto+0x23a/0x340 [ 51.598825][ T5082] ? __ia32_sys_getpeername+0xb0/0xb0 [ 51.604227][ T5082] ? restore_fpregs_from_fpstate+0xc1/0x1c0 [ 51.610232][ T5082] __x64_sys_sendto+0xe1/0x1b0 [ 51.615280][ T5082] ? syscall_enter_from_user_mode+0x26/0xb0 [ 51.621444][ T5082] do_syscall_64+0x39/0xb0 [ 51.626138][ T5082] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.632222][ T5082] RIP: 0033:0x7ff14343e12c [ 51.636636][ T5082] 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 [ 51.656417][ T5082] RSP: 002b:00007ffcd55f0f00 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 51.665271][ T5082] RAX: ffffffffffffffda RBX: 00007ff1440d4620 RCX: 00007ff14343e12c [ 51.673246][ T5082] RDX: 000000000000002c RSI: 00007ff1440d4670 RDI: 0000000000000003 [ 51.681500][ T5082] RBP: 0000000000000000 R08: 00007ffcd55f0f54 R09: 000000000000000c [ 51.689683][ T5082] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 51.698182][ T5082] R13: 00007ff1440d4670 R14: 0000000000000003 R15: 0000000000000000 [ 51.706779][ T5082] [ 51.734514][ T5082] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.742513][ T5082] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.750130][ T5082] bridge_slave_0: entered allmulticast mode [ 51.756737][ T5082] bridge_slave_0: entered promiscuous mode [ 51.765648][ T5082] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.773908][ T5082] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.781406][ T5082] bridge_slave_1: entered allmulticast mode [ 51.788424][ T5082] bridge_slave_1: entered promiscuous mode [ 51.807480][ T5082] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.818930][ T5082] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.841418][ T5082] team0: Port device team_slave_0 added [ 51.850105][ T5082] team0: Port device team_slave_1 added [ 51.866375][ T5082] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.873561][ T5082] 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. [ 51.900108][ T5082] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.912545][ T5082] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.920162][ T5082] 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. [ 51.947226][ T5082] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.977553][ T5082] hsr_slave_0: entered promiscuous mode [ 51.984387][ T5082] hsr_slave_1: entered promiscuous mode [ 52.059357][ T5082] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.069741][ T5082] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 52.079082][ T5082] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.088184][ T5082] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.108832][ T5082] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.116116][ T5082] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.124216][ T5082] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.131738][ T5082] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.175891][ T5082] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.188034][ T901] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.198355][ T901] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.206988][ T901] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.215937][ T901] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.231472][ T5082] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.240642][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.250384][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.259155][ T22] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.266452][ T22] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.277727][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.286801][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.296941][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.304357][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.317019][ T5093] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.328501][ T5096] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.340156][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 52.349633][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.359534][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.370395][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 52.379827][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.393995][ T5082] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 52.404803][ T5082] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.416361][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 52.425517][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.434428][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 52.443034][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.452261][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.569465][ T5082] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.577286][ T5093] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.585042][ T5093] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.606557][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 52.616010][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.629996][ T5082] veth0_vlan: entered promiscuous mode [ 52.636597][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 52.645055][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.654977][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.662881][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.675394][ T5082] veth1_vlan: entered promiscuous mode [ 52.692333][ T5082] veth0_macvtap: entered promiscuous mode [ 52.701641][ T5093] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.710621][ T5093] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.719488][ T5093] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 52.728539][ T5093] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.738118][ T5093] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 52.749011][ T5082] veth1_macvtap: entered promiscuous mode [ 52.763999][ T5082] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.771929][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 52.781249][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 52.790491][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.801433][ T5082] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.812432][ T5082] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.822245][ T5082] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.831334][ T5082] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.840428][ T5082] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 52.851141][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 52.860509][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.915396][ T1163] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.929990][ T1163] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.941342][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 52.942146][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 52.950107][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 52.967753][ T5094] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2023/03/14 00:16:23 building call list... [ 53.104742][ T4400] Bluetooth: hci0: command 0x0409 tx timeout executing program [ 54.685602][ T5072] 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. [ 54.884852][ T5072] can: request_module (can-proto-0) failed. [ 54.917721][ T5072] can: request_module (can-proto-0) failed. [ 54.949853][ T5072] can: request_module (can-proto-0) failed. [ 55.705021][ T75] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0