DUID 00:04:0d:9a:cd:e6:c7:7d:ca:4f:bf:38:31:ea:0f:3f:7d:9b forked to background, child pid 4657 [ 36.188402][ T4658] 8021q: adding VLAN 0 to HW filter on device bond0 [ 36.198382][ T4658] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.229' (ECDSA) to the list of known hosts. 2023/03/14 15:43:21 fuzzer started 2023/03/14 15:43:21 connecting to host at 10.128.0.169:42685 2023/03/14 15:43:21 checking machine... 2023/03/14 15:43:21 checking revisions... 2023/03/14 15:43:21 testing simple program... syzkaller login: [ 54.975977][ T5083] cgroup: Unknown subsys name 'net' [ 55.079485][ T5083] cgroup: Unknown subsys name 'rlimit' [ 55.220580][ T5077] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5077 'syz-fuzzer' [ 55.338794][ T5088] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 55.348349][ T5088] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 55.356652][ T5088] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 55.364956][ T5088] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 55.373282][ T5088] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 55.383167][ T5088] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 55.509196][ T5085] chnl_net:caif_netlink_parms(): no params data found [ 55.535465][ T5085] [ 55.537863][ T5085] ============================= [ 55.542898][ T5085] WARNING: suspicious RCU usage [ 55.547777][ T5085] 6.3.0-rc1-syzkaller-00151-g28e8cabe80f3 #0 Not tainted [ 55.555091][ T5085] ----------------------------- [ 55.559963][ T5085] drivers/net/veth.c:1265 suspicious rcu_dereference_check() usage! [ 55.568207][ T5085] [ 55.568207][ T5085] other info that might help us debug this: [ 55.568207][ T5085] [ 55.578610][ T5085] [ 55.578610][ T5085] rcu_scheduler_active = 2, debug_locks = 1 [ 55.587111][ T5085] 1 lock held by syz-executor.0/5085: [ 55.592636][ T5085] #0: ffffffff8e102ec8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 [ 55.602509][ T5085] [ 55.602509][ T5085] stack backtrace: [ 55.608626][ T5085] CPU: 0 PID: 5085 Comm: syz-executor.0 Not tainted 6.3.0-rc1-syzkaller-00151-g28e8cabe80f3 #0 [ 55.619176][ T5085] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 55.629772][ T5085] Call Trace: [ 55.633387][ T5085] [ 55.636432][ T5085] dump_stack_lvl+0x136/0x150 [ 55.641143][ T5085] lockdep_rcu_suspicious+0x208/0x3a0 [ 55.646987][ T5085] veth_set_xdp_features+0x1c7/0x250 [ 55.652311][ T5085] veth_newlink+0x729/0x9d0 [ 55.656836][ T5085] ? veth_set_features+0x1e0/0x1e0 [ 55.662064][ T5085] ? __rtnl_newlink+0xfd4/0x1840 [ 55.667139][ T5085] ? rtnl_newlink+0x68/0xa0 [ 55.671888][ T5085] ? rtnetlink_rcv_msg+0x43d/0xd50 [ 55.677048][ T5085] ? netlink_rcv_skb+0x165/0x440 [ 55.682022][ T5085] ? netlink_unicast+0x547/0x7f0 [ 55.686984][ T5085] ? netlink_sendmsg+0x925/0xe30 [ 55.692049][ T5085] ? sock_sendmsg+0xde/0x190 [ 55.696681][ T5085] ? __sys_sendto+0x23a/0x340 [ 55.701388][ T5085] ? __x64_sys_sendto+0xe1/0x1b0 [ 55.706475][ T5085] ? do_syscall_64+0x39/0xb0 [ 55.711075][ T5085] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.717176][ T5085] ? find_held_lock+0x2d/0x110 [ 55.721966][ T5085] ? __kmem_cache_alloc_node+0x48/0x320 [ 55.727584][ T5085] ? kvmalloc_node+0xa2/0x1a0 [ 55.732989][ T5085] ? rcu_read_lock_sched_held+0x3e/0x70 [ 55.738556][ T5085] ? trace_kmalloc+0xb4/0x110 [ 55.743343][ T5085] ? __kmalloc_node+0x77/0xd0 [ 55.748317][ T5085] ? __xdp_rxq_info_reg+0x18d/0x340 [ 55.753561][ T5085] ? alloc_netdev_mqs+0xdce/0x1250 [ 55.758992][ T5085] ? rtnl_create_link+0x9d8/0xee0 [ 55.764052][ T5085] ? veth_set_features+0x1e0/0x1e0 [ 55.769255][ T5085] __rtnl_newlink+0x10c2/0x1840 [ 55.774269][ T5085] ? find_held_lock+0x2d/0x110 [ 55.779150][ T5085] ? rtnl_link_unregister+0x250/0x250 [ 55.784542][ T5085] ? __kmem_cache_alloc_node+0x48/0x320 [ 55.790133][ T5085] rtnl_newlink+0x68/0xa0 [ 55.794492][ T5085] ? __rtnl_newlink+0x1840/0x1840 [ 55.799535][ T5085] rtnetlink_rcv_msg+0x43d/0xd50 [ 55.804664][ T5085] ? rtnl_stats_set+0x4d0/0x4d0 [ 55.809529][ T5085] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 55.815560][ T5085] ? do_syscall_64+0x39/0xb0 [ 55.820331][ T5085] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.826448][ T5085] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 55.832463][ T5085] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 55.838670][ T5085] netlink_rcv_skb+0x165/0x440 [ 55.843588][ T5085] ? rtnl_stats_set+0x4d0/0x4d0 [ 55.848484][ T5085] ? netlink_ack+0x1360/0x1360 [ 55.853280][ T5085] ? netlink_deliver_tap+0x1b1/0xcf0 [ 55.858586][ T5085] netlink_unicast+0x547/0x7f0 [ 55.863455][ T5085] ? netlink_attachskb+0x890/0x890 [ 55.868668][ T5085] ? __virt_addr_valid+0x61/0x2e0 [ 55.873708][ T5085] ? __phys_addr_symbol+0x30/0x70 [ 55.878832][ T5085] ? __check_object_size+0x333/0x6e0 [ 55.884140][ T5085] netlink_sendmsg+0x925/0xe30 [ 55.888931][ T5085] ? netlink_unicast+0x7f0/0x7f0 [ 55.893993][ T5085] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 55.899396][ T5085] ? netlink_unicast+0x7f0/0x7f0 [ 55.904366][ T5085] sock_sendmsg+0xde/0x190 [ 55.909204][ T5085] __sys_sendto+0x23a/0x340 [ 55.913844][ T5085] ? __ia32_sys_getpeername+0xb0/0xb0 [ 55.919363][ T5085] ? restore_fpregs_from_fpstate+0xc1/0x1c0 [ 55.925293][ T5085] __x64_sys_sendto+0xe1/0x1b0 [ 55.930083][ T5085] ? syscall_enter_from_user_mode+0x26/0xb0 [ 55.935992][ T5085] do_syscall_64+0x39/0xb0 [ 55.940415][ T5085] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 55.946323][ T5085] RIP: 0033:0x7f48e523e12c [ 55.950919][ T5085] 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 [ 55.970719][ T5085] RSP: 002b:00007ffd045db180 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 55.979264][ T5085] RAX: ffffffffffffffda RBX: 00007f48e5ed4620 RCX: 00007f48e523e12c [ 55.987334][ T5085] RDX: 000000000000002c RSI: 00007f48e5ed4670 RDI: 0000000000000003 [ 55.995319][ T5085] RBP: 0000000000000000 R08: 00007ffd045db1d4 R09: 000000000000000c [ 56.003304][ T5085] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 56.011491][ T5085] R13: 00007f48e5ed4670 R14: 0000000000000003 R15: 0000000000000000 [ 56.019573][ T5085] [ 56.051792][ T5085] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.060052][ T5085] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.067889][ T5085] bridge_slave_0: entered allmulticast mode [ 56.074619][ T5085] bridge_slave_0: entered promiscuous mode [ 56.083802][ T5085] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.091044][ T5085] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.098518][ T5085] bridge_slave_1: entered allmulticast mode [ 56.106354][ T5085] bridge_slave_1: entered promiscuous mode [ 56.127786][ T5085] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.139518][ T5085] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.163177][ T5085] team0: Port device team_slave_0 added [ 56.173338][ T5085] team0: Port device team_slave_1 added [ 56.190722][ T5085] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 56.198138][ T5085] 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. [ 56.224448][ T5085] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 56.238246][ T5085] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 56.245349][ T5085] 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. [ 56.271908][ T5085] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 56.301790][ T5085] hsr_slave_0: entered promiscuous mode [ 56.308809][ T5085] hsr_slave_1: entered promiscuous mode [ 56.396808][ T5085] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.407968][ T5085] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.418323][ T5085] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.428854][ T5085] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.451208][ T5085] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.458514][ T5085] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.466859][ T5085] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.474221][ T5085] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.487030][ T14] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.495252][ T14] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.543544][ T5085] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.557187][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.567553][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.578237][ T5085] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.589235][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.599173][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.607765][ T22] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.615018][ T22] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.630190][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.639331][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.648925][ T5097] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.656155][ T5097] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.673732][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 56.682940][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 56.691610][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 56.701125][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.709902][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 56.719007][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.728861][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 56.741018][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 56.751076][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 56.765230][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 56.774423][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 56.786227][ T5085] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 56.921142][ T5085] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 56.929082][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 56.937036][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 56.962752][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 56.971661][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 56.984557][ T5085] veth0_vlan: entered promiscuous mode [ 56.992666][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 57.000852][ T5097] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.011114][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 57.019781][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 57.031222][ T5085] veth1_vlan: entered promiscuous mode [ 57.058049][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 57.066601][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 57.075359][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 57.084194][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 57.094452][ T5085] veth0_macvtap: entered promiscuous mode [ 57.104835][ T5085] veth1_macvtap: entered promiscuous mode [ 57.120054][ T5085] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 57.128330][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 57.136719][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 57.145513][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 57.154327][ T5099] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 57.166950][ T5085] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 57.176160][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 57.185589][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 57.198540][ T5085] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.208021][ T5085] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.217206][ T5085] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.226373][ T5085] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.290728][ T62] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 57.307079][ T62] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 57.320912][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 57.330974][ T2829] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 57.339337][ T2829] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 57.348455][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2023/03/14 15:43:24 building call list... [ 57.444285][ T5088] Bluetooth: hci0: command 0x0409 tx timeout executing program [ 59.427688][ T5076] 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. [ 59.597115][ T5076] can: request_module (can-proto-0) failed. [ 59.634769][ T5076] can: request_module (can-proto-0) failed. [ 59.667373][ T5076] can: request_module (can-proto-0) failed. [ 60.119606][ T41] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program