DUID 00:04:0d:9a:cd:e6:c7:7d:ca:4f:bf:38:31:ea:0f:3f:7d:9b forked to background, child pid 4658 [ 37.370059][ T4659] 8021q: adding VLAN 0 to HW filter on device bond0 [ 37.388741][ T4659] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.245' (ECDSA) to the list of known hosts. 2023/03/15 07:30:00 fuzzer started 2023/03/15 07:30:00 connecting to host at 10.128.0.169:45887 2023/03/15 07:30:00 checking machine... 2023/03/15 07:30:00 checking revisions... 2023/03/15 07:30:00 testing simple program... syzkaller login: [ 60.074958][ T5084] cgroup: Unknown subsys name 'net' [ 60.211598][ T5084] cgroup: Unknown subsys name 'rlimit' [ 60.321371][ T5082] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5082 'syz-fuzzer' [ 60.444839][ T5088] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 60.453383][ T5088] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 60.461842][ T5088] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 60.471552][ T5088] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 60.480250][ T5088] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 60.487913][ T5088] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 60.617085][ T5086] chnl_net:caif_netlink_parms(): no params data found [ 60.641362][ T5086] [ 60.644151][ T5086] ============================= [ 60.649316][ T5086] WARNING: suspicious RCU usage [ 60.654594][ T5086] 6.3.0-rc1-syzkaller-00152-g248401cb2c46 #0 Not tainted [ 60.661666][ T5086] ----------------------------- [ 60.667002][ T5086] drivers/net/veth.c:1265 suspicious rcu_dereference_check() usage! [ 60.676043][ T5086] [ 60.676043][ T5086] other info that might help us debug this: [ 60.676043][ T5086] [ 60.686922][ T5086] [ 60.686922][ T5086] rcu_scheduler_active = 2, debug_locks = 1 [ 60.695523][ T5086] 1 lock held by syz-executor.0/5086: [ 60.701303][ T5086] #0: ffffffff8e102ec8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 [ 60.711145][ T5086] [ 60.711145][ T5086] stack backtrace: [ 60.718448][ T5086] CPU: 0 PID: 5086 Comm: syz-executor.0 Not tainted 6.3.0-rc1-syzkaller-00152-g248401cb2c46 #0 [ 60.730011][ T5086] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 60.740386][ T5086] Call Trace: [ 60.743939][ T5086] [ 60.747374][ T5086] dump_stack_lvl+0x136/0x150 [ 60.752096][ T5086] lockdep_rcu_suspicious+0x208/0x3a0 [ 60.757978][ T5086] veth_set_xdp_features+0x1c7/0x250 [ 60.764175][ T5086] veth_newlink+0x729/0x9d0 [ 60.769440][ T5086] ? veth_set_features+0x1e0/0x1e0 [ 60.776167][ T5086] ? __rtnl_newlink+0xfd4/0x1840 [ 60.781531][ T5086] ? rtnl_newlink+0x68/0xa0 [ 60.786708][ T5086] ? rtnetlink_rcv_msg+0x43d/0xd50 [ 60.792392][ T5086] ? netlink_rcv_skb+0x165/0x440 [ 60.797559][ T5086] ? netlink_unicast+0x547/0x7f0 [ 60.803313][ T5086] ? netlink_sendmsg+0x925/0xe30 [ 60.810039][ T5086] ? sock_sendmsg+0xde/0x190 [ 60.815311][ T5086] ? __sys_sendto+0x23a/0x340 [ 60.821817][ T5086] ? __x64_sys_sendto+0xe1/0x1b0 [ 60.827880][ T5086] ? do_syscall_64+0x39/0xb0 [ 60.833364][ T5086] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.839987][ T5086] ? find_held_lock+0x2d/0x110 [ 60.845458][ T5086] ? __kmem_cache_alloc_node+0x48/0x320 [ 60.852937][ T5086] ? kvmalloc_node+0xa2/0x1a0 [ 60.858135][ T5086] ? rcu_read_lock_sched_held+0x3e/0x70 [ 60.863848][ T5086] ? trace_kmalloc+0xb4/0x110 [ 60.869275][ T5086] ? __kmalloc_node+0x77/0xd0 [ 60.874268][ T5086] ? __xdp_rxq_info_reg+0x18d/0x340 [ 60.880289][ T5086] ? alloc_netdev_mqs+0xdce/0x1250 [ 60.885905][ T5086] ? rtnl_create_link+0x9d8/0xee0 [ 60.891059][ T5086] ? veth_set_features+0x1e0/0x1e0 [ 60.896764][ T5086] __rtnl_newlink+0x10c2/0x1840 [ 60.901822][ T5086] ? find_held_lock+0x2d/0x110 [ 60.906800][ T5086] ? rtnl_link_unregister+0x250/0x250 [ 60.912317][ T5086] ? __kmem_cache_alloc_node+0x48/0x320 [ 60.917926][ T5086] rtnl_newlink+0x68/0xa0 [ 60.922566][ T5086] ? __rtnl_newlink+0x1840/0x1840 [ 60.927906][ T5086] rtnetlink_rcv_msg+0x43d/0xd50 [ 60.933026][ T5086] ? rtnl_stats_set+0x4d0/0x4d0 [ 60.938444][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 60.944600][ T5086] ? do_syscall_64+0x39/0xb0 [ 60.949955][ T5086] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.956529][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 60.963762][ T5086] netlink_rcv_skb+0x165/0x440 [ 60.968865][ T5086] ? rtnl_stats_set+0x4d0/0x4d0 [ 60.973861][ T5086] ? netlink_ack+0x1360/0x1360 [ 60.978697][ T5086] ? netlink_deliver_tap+0x1b1/0xcf0 [ 60.984118][ T5086] netlink_unicast+0x547/0x7f0 [ 60.989013][ T5086] ? netlink_attachskb+0x890/0x890 [ 60.994142][ T5086] ? __virt_addr_valid+0x61/0x2e0 [ 60.999205][ T5086] ? __phys_addr_symbol+0x30/0x70 [ 61.004366][ T5086] ? __check_object_size+0x333/0x6e0 [ 61.010398][ T5086] netlink_sendmsg+0x925/0xe30 [ 61.015361][ T5086] ? netlink_unicast+0x7f0/0x7f0 [ 61.020601][ T5086] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 61.027394][ T5086] ? netlink_unicast+0x7f0/0x7f0 [ 61.033623][ T5086] sock_sendmsg+0xde/0x190 [ 61.039702][ T5086] __sys_sendto+0x23a/0x340 [ 61.044819][ T5086] ? __ia32_sys_getpeername+0xb0/0xb0 [ 61.050984][ T5086] ? restore_fpregs_from_fpstate+0xc1/0x1c0 [ 61.057512][ T5086] __x64_sys_sendto+0xe1/0x1b0 [ 61.063047][ T5086] ? syscall_enter_from_user_mode+0x26/0xb0 [ 61.069734][ T5086] do_syscall_64+0x39/0xb0 [ 61.074379][ T5086] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 61.080590][ T5086] RIP: 0033:0x7f356523e12c [ 61.085473][ 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 [ 61.108678][ T5086] RSP: 002b:00007fffe2830760 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 61.117579][ T5086] RAX: ffffffffffffffda RBX: 00007f3565ed4620 RCX: 00007f356523e12c [ 61.125762][ T5086] RDX: 000000000000002c RSI: 00007f3565ed4670 RDI: 0000000000000003 [ 61.134295][ T5086] RBP: 0000000000000000 R08: 00007fffe28307b4 R09: 000000000000000c [ 61.142977][ T5086] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 61.151067][ T5086] R13: 00007f3565ed4670 R14: 0000000000000003 R15: 0000000000000000 [ 61.159264][ T5086] [ 61.191484][ T5086] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.199416][ T5086] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.207019][ T5086] bridge_slave_0: entered allmulticast mode [ 61.214605][ T5086] bridge_slave_0: entered promiscuous mode [ 61.224940][ T5086] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.232943][ T5086] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.241014][ T5086] bridge_slave_1: entered allmulticast mode [ 61.248499][ T5086] bridge_slave_1: entered promiscuous mode [ 61.270315][ T5086] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.282049][ T5086] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.308644][ T5086] team0: Port device team_slave_0 added [ 61.316790][ T5086] team0: Port device team_slave_1 added [ 61.336465][ T5086] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 61.343879][ 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. [ 61.370288][ T5086] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 61.383670][ T5086] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 61.390756][ 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. [ 61.417431][ T5086] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 61.451558][ T5086] hsr_slave_0: entered promiscuous mode [ 61.458498][ T5086] hsr_slave_1: entered promiscuous mode [ 61.551455][ T5086] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 61.562727][ T5086] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 61.572083][ T5086] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 61.583902][ T5086] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.609720][ T5086] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.617061][ T5086] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.625705][ T5086] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.633058][ T5086] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.646933][ T14] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.655751][ T14] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.707834][ T5086] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.720300][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.730788][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.742813][ T5086] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.754312][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.765177][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.774377][ T14] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.781564][ T14] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.804522][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.814176][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.823931][ T14] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.831330][ T14] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.839236][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.848388][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.857344][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.866398][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.875182][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.884469][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.898724][ T5086] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 61.910106][ T5086] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.926608][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.936022][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.945817][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.954986][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.964168][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.976440][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.109579][ T5086] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.119089][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.128598][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.154094][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 62.165202][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 62.177732][ T5086] veth0_vlan: entered promiscuous mode [ 62.186033][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 62.196461][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 62.209169][ T5086] veth1_vlan: entered promiscuous mode [ 62.216109][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 62.225747][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 62.234056][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 62.254465][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 62.263038][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 62.272417][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 62.282532][ T5086] veth0_macvtap: entered promiscuous mode [ 62.296975][ T5086] veth1_macvtap: entered promiscuous mode [ 62.312603][ T5086] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 62.322924][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 62.331989][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 62.340932][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 62.350404][ T14] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 62.362062][ T5086] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 62.371229][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 62.380248][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 62.392191][ T5086] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.401484][ T5086] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.411100][ T5086] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.420285][ T5086] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 62.495737][ T11] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 62.504395][ T5088] Bluetooth: hci0: command 0x0409 tx timeout [ 62.511352][ T11] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 62.522215][ T5096] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 62.540364][ T11] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 62.548833][ T11] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 62.558670][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2023/03/15 07:30:03 building call list... executing program [ 64.535860][ T5077] 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. [ 64.756289][ T5077] can: request_module (can-proto-0) failed. [ 64.794568][ T5077] can: request_module (can-proto-0) failed. [ 64.831901][ T5077] can: request_module (can-proto-0) failed. [ 65.689668][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program