DUID 00:04:63:3c:db:c8:83:d4:2a:b1:e5:3f:fc:31:79:55:3b:bc forked to background, child pid 4659 [ 38.553922][ T4660] 8021q: adding VLAN 0 to HW filter on device bond0 [ 38.581574][ T4660] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.199' (ECDSA) to the list of known hosts. 2023/03/14 08:43:21 fuzzer started 2023/03/14 08:43:22 connecting to host at 10.128.0.169:43641 2023/03/14 08:43:22 checking machine... 2023/03/14 08:43:22 checking revisions... 2023/03/14 08:43:22 testing simple program... syzkaller login: [ 61.718002][ T5084] cgroup: Unknown subsys name 'net' [ 61.858179][ T5084] cgroup: Unknown subsys name 'rlimit' [ 61.998709][ T5079] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5079 'syz-fuzzer' [ 62.126399][ T5087] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 62.134665][ T5087] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 62.142479][ T5087] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 62.150640][ T5087] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 62.158416][ T5087] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 62.166077][ T5087] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 62.299799][ T5086] chnl_net:caif_netlink_parms(): no params data found [ 62.323732][ T5086] [ 62.326092][ T5086] ============================= [ 62.331767][ T5086] WARNING: suspicious RCU usage [ 62.336676][ T5086] 6.3.0-rc2-next-20230314-syzkaller #0 Not tainted [ 62.343264][ T5086] ----------------------------- [ 62.348145][ T5086] drivers/net/veth.c:1265 suspicious rcu_dereference_check() usage! [ 62.356224][ T5086] [ 62.356224][ T5086] other info that might help us debug this: [ 62.356224][ T5086] [ 62.366507][ T5086] [ 62.366507][ T5086] rcu_scheduler_active = 2, debug_locks = 1 [ 62.374615][ T5086] 1 lock held by syz-executor.0/5086: [ 62.380001][ T5086] #0: ffffffff8e109e48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 [ 62.389681][ T5086] [ 62.389681][ T5086] stack backtrace: [ 62.395661][ T5086] CPU: 1 PID: 5086 Comm: syz-executor.0 Not tainted 6.3.0-rc2-next-20230314-syzkaller #0 [ 62.405556][ T5086] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 62.415620][ T5086] Call Trace: [ 62.418995][ T5086] [ 62.421933][ T5086] dump_stack_lvl+0x136/0x150 [ 62.426623][ T5086] lockdep_rcu_suspicious+0x208/0x3a0 [ 62.432698][ T5086] veth_set_xdp_features+0x1c7/0x250 [ 62.438084][ T5086] veth_newlink+0x729/0x9d0 [ 62.442680][ T5086] ? veth_set_features+0x1e0/0x1e0 [ 62.447884][ T5086] ? __rtnl_newlink+0xfd4/0x1840 [ 62.452916][ T5086] ? rtnl_newlink+0x68/0xa0 [ 62.457421][ T5086] ? rtnetlink_rcv_msg+0x43d/0xd50 [ 62.462618][ T5086] ? netlink_rcv_skb+0x165/0x440 [ 62.467556][ T5086] ? netlink_unicast+0x547/0x7f0 [ 62.472529][ T5086] ? netlink_sendmsg+0x925/0xe30 [ 62.477487][ T5086] ? sock_sendmsg+0xde/0x190 [ 62.482081][ T5086] ? __sys_sendto+0x23a/0x340 [ 62.486753][ T5086] ? __x64_sys_sendto+0xe1/0x1b0 [ 62.491790][ T5086] ? do_syscall_64+0x39/0xb0 [ 62.496484][ T5086] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 62.502650][ T5086] ? find_held_lock+0x2d/0x110 [ 62.507422][ T5086] ? __kmem_cache_alloc_node+0x48/0x320 [ 62.512986][ T5086] ? kvmalloc_node+0xa2/0x1a0 [ 62.517667][ T5086] ? rcu_read_lock_sched_held+0x3e/0x70 [ 62.523217][ T5086] ? trace_kmalloc+0xae/0x100 [ 62.527986][ T5086] ? __kmalloc_node+0x77/0xd0 [ 62.532683][ T5086] ? __xdp_rxq_info_reg+0x18d/0x340 [ 62.537902][ T5086] ? alloc_netdev_mqs+0xdce/0x1250 [ 62.543044][ T5086] ? rtnl_create_link+0x9d8/0xee0 [ 62.548088][ T5086] ? veth_set_features+0x1e0/0x1e0 [ 62.553205][ T5086] __rtnl_newlink+0x10c2/0x1840 [ 62.558075][ T5086] ? rtnl_link_unregister+0x250/0x250 [ 62.563624][ T5086] ? __kmem_cache_alloc_node+0x48/0x320 [ 62.569194][ T5086] rtnl_newlink+0x68/0xa0 [ 62.573703][ T5086] ? __rtnl_newlink+0x1840/0x1840 [ 62.578758][ T5086] rtnetlink_rcv_msg+0x43d/0xd50 [ 62.583795][ T5086] ? rtnl_stats_set+0x4d0/0x4d0 [ 62.588649][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 62.594645][ T5086] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 62.600745][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 62.606737][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 62.612739][ T5086] ? print_usage_bug.part.0+0x660/0x660 [ 62.618295][ T5086] netlink_rcv_skb+0x165/0x440 [ 62.623064][ T5086] ? rtnl_stats_set+0x4d0/0x4d0 [ 62.628187][ T5086] ? netlink_ack+0x1360/0x1360 [ 62.632973][ T5086] ? netlink_deliver_tap+0x1b1/0xcf0 [ 62.638274][ T5086] netlink_unicast+0x547/0x7f0 [ 62.643303][ T5086] ? netlink_attachskb+0x890/0x890 [ 62.648495][ T5086] ? __virt_addr_valid+0x61/0x2e0 [ 62.653728][ T5086] ? __phys_addr_symbol+0x30/0x70 [ 62.658769][ T5086] ? __check_object_size+0x333/0x6e0 [ 62.664071][ T5086] netlink_sendmsg+0x925/0xe30 [ 62.668947][ T5086] ? netlink_unicast+0x7f0/0x7f0 [ 62.673908][ T5086] ? __might_fault+0xb2/0x190 [ 62.678792][ T5086] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 62.684274][ T5086] ? netlink_unicast+0x7f0/0x7f0 [ 62.689218][ T5086] sock_sendmsg+0xde/0x190 [ 62.693666][ T5086] __sys_sendto+0x23a/0x340 [ 62.698190][ T5086] ? __ia32_sys_getpeername+0xb0/0xb0 [ 62.703580][ T5086] ? xfd_validate_state+0x5d/0x180 [ 62.708703][ T5086] __x64_sys_sendto+0xe1/0x1b0 [ 62.713490][ T5086] ? syscall_enter_from_user_mode+0x26/0xb0 [ 62.719392][ T5086] do_syscall_64+0x39/0xb0 [ 62.723914][ T5086] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 62.729832][ T5086] RIP: 0033:0x7f128723e12c [ 62.734265][ 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 [ 62.754742][ T5086] RSP: 002b:00007ffc621a8d10 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 62.763265][ T5086] RAX: ffffffffffffffda RBX: 00007f1287ed4620 RCX: 00007f128723e12c [ 62.771262][ T5086] RDX: 000000000000002c RSI: 00007f1287ed4670 RDI: 0000000000000003 [ 62.779802][ T5086] RBP: 0000000000000000 R08: 00007ffc621a8d64 R09: 000000000000000c [ 62.787777][ T5086] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 62.795855][ T5086] R13: 00007f1287ed4670 R14: 0000000000000003 R15: 0000000000000000 [ 62.803903][ T5086] [ 62.835021][ T5086] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.842879][ T5086] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.850210][ T5086] bridge_slave_0: entered allmulticast mode [ 62.857034][ T5086] bridge_slave_0: entered promiscuous mode [ 62.865538][ T5086] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.872793][ T5086] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.879953][ T5086] bridge_slave_1: entered allmulticast mode [ 62.886808][ T5086] bridge_slave_1: entered promiscuous mode [ 62.907449][ T5086] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.919061][ T5086] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.943771][ T5086] team0: Port device team_slave_0 added [ 62.952408][ T5086] team0: Port device team_slave_1 added [ 62.971178][ T5086] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 62.978257][ 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. [ 63.004949][ T5086] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 63.018008][ T5086] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 63.025780][ 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. [ 63.052092][ T5086] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 63.084255][ T5086] hsr_slave_0: entered promiscuous mode [ 63.091144][ T5086] hsr_slave_1: entered promiscuous mode [ 63.181881][ T5086] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 63.193187][ T5086] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 63.203273][ T5086] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 63.213647][ T5086] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 63.238720][ T5086] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.246017][ T5086] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.254801][ T5086] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.262236][ T5086] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.313432][ T5086] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.322126][ T5097] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.331097][ T5097] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.339782][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 63.359047][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.367528][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.379648][ T5086] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.389740][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.400216][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.408910][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.416378][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.430286][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.439427][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.448118][ T4462] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.455270][ T4462] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.471672][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.480772][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.489639][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 63.498778][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.510464][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.522631][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 63.532136][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.549523][ T5086] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 63.561523][ T5086] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 63.574334][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 63.583716][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.592832][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 63.601560][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 63.612005][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.756853][ T5086] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.766243][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 63.774798][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 63.791574][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 63.800241][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 63.819389][ T5086] veth0_vlan: entered promiscuous mode [ 63.827878][ T5104] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 63.837411][ T5104] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 63.850572][ T5086] veth1_vlan: entered promiscuous mode [ 63.858647][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 63.867613][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 63.875714][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 63.902985][ T5086] veth0_macvtap: entered promiscuous mode [ 63.910284][ T5104] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 63.918838][ T5104] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 63.927766][ T5104] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 63.937571][ T5104] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 63.949900][ T5086] veth1_macvtap: entered promiscuous mode [ 63.966435][ T5086] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 63.974931][ T5104] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 63.983458][ T5104] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 63.992831][ T5104] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 64.004400][ T5086] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 64.012390][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 64.021273][ T4462] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 64.034375][ T5086] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.043522][ T5086] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.053041][ T5086] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.062288][ T5086] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 64.127231][ T2831] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 64.139548][ T2831] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 64.150011][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 64.164300][ T41] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 64.173602][ T41] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 64.183937][ T9] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 64.201543][ T5087] Bluetooth: hci0: command 0x0409 tx timeout 2023/03/14 08:43:24 building call list... executing program [ 66.302769][ 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. [ 66.481469][ T5078] can: request_module (can-proto-0) failed. [ 66.518749][ T5078] can: request_module (can-proto-0) failed. [ 66.559024][ T5078] can: request_module (can-proto-0) failed. [ 67.274914][ T41] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program