DUID 00:04:08:6f:95:b8:7a:da:47:d5:ae:28:d8:4d:e4:58:2e:6d forked to background, child pid 4658 [ 41.953450][ T4659] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.975384][ T4659] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.119' (ECDSA) to the list of known hosts. 2023/03/15 02:22:50 fuzzer started 2023/03/15 02:22:50 connecting to host at 10.128.0.169:37361 2023/03/15 02:22:50 checking machine... 2023/03/15 02:22:50 checking revisions... 2023/03/15 02:22:50 testing simple program... syzkaller login: [ 66.958230][ T5085] cgroup: Unknown subsys name 'net' [ 67.102974][ T5085] cgroup: Unknown subsys name 'rlimit' [ 67.214143][ T5076] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5076 'syz-fuzzer' [ 67.344023][ T48] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 67.352652][ T48] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 67.360943][ T48] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 67.368787][ T48] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 67.376781][ T48] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 67.384175][ T48] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 67.514089][ T5087] chnl_net:caif_netlink_parms(): no params data found [ 67.537200][ T5087] [ 67.539552][ T5087] ============================= [ 67.546933][ T5087] WARNING: suspicious RCU usage [ 67.551807][ T5087] 6.3.0-rc2-next-20230315-syzkaller #0 Not tainted [ 67.558367][ T5087] ----------------------------- [ 67.563257][ T5087] drivers/net/veth.c:1265 suspicious rcu_dereference_check() usage! [ 67.571287][ T5087] [ 67.571287][ T5087] other info that might help us debug this: [ 67.571287][ T5087] [ 67.581681][ T5087] [ 67.581681][ T5087] rcu_scheduler_active = 2, debug_locks = 1 [ 67.589808][ T5087] 1 lock held by syz-executor.0/5087: [ 67.595250][ T5087] #0: ffffffff8e10a2c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 [ 67.604848][ T5087] [ 67.604848][ T5087] stack backtrace: [ 67.610766][ T5087] CPU: 0 PID: 5087 Comm: syz-executor.0 Not tainted 6.3.0-rc2-next-20230315-syzkaller #0 [ 67.620624][ T5087] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 67.630849][ T5087] Call Trace: [ 67.634119][ T5087] [ 67.637044][ T5087] dump_stack_lvl+0x136/0x150 [ 67.641735][ T5087] lockdep_rcu_suspicious+0x208/0x3a0 [ 67.647116][ T5087] veth_set_xdp_features+0x1c7/0x250 [ 67.652417][ T5087] veth_newlink+0x729/0x9d0 [ 67.656954][ T5087] ? veth_set_features+0x1e0/0x1e0 [ 67.662059][ T5087] ? __rtnl_newlink+0xfd4/0x1840 [ 67.667007][ T5087] ? rtnl_newlink+0x68/0xa0 [ 67.671522][ T5087] ? rtnetlink_rcv_msg+0x43d/0xd50 [ 67.676640][ T5087] ? netlink_rcv_skb+0x165/0x440 [ 67.681594][ T5087] ? netlink_unicast+0x547/0x7f0 [ 67.686537][ T5087] ? netlink_sendmsg+0x925/0xe30 [ 67.691485][ T5087] ? sock_sendmsg+0xde/0x190 [ 67.696080][ T5087] ? __sys_sendto+0x23a/0x340 [ 67.700764][ T5087] ? __x64_sys_sendto+0xe1/0x1b0 [ 67.705711][ T5087] ? do_syscall_64+0x39/0xb0 [ 67.710338][ T5087] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 67.716443][ T5087] ? find_held_lock+0x2d/0x110 [ 67.721328][ T5087] ? __kmem_cache_alloc_node+0x48/0x320 [ 67.726920][ T5087] ? kvmalloc_node+0xa2/0x1a0 [ 67.731610][ T5087] ? rcu_read_lock_sched_held+0x3e/0x70 [ 67.737255][ T5087] ? trace_kmalloc+0xae/0x100 [ 67.741946][ T5087] ? __kmalloc_node+0x77/0xd0 [ 67.746641][ T5087] ? __xdp_rxq_info_reg+0x18d/0x340 [ 67.751947][ T5087] ? alloc_netdev_mqs+0xdce/0x1250 [ 67.757090][ T5087] ? rtnl_create_link+0x9d8/0xee0 [ 67.762227][ T5087] ? veth_set_features+0x1e0/0x1e0 [ 67.767361][ T5087] __rtnl_newlink+0x10c2/0x1840 [ 67.772242][ T5087] ? find_held_lock+0x2d/0x110 [ 67.777014][ T5087] ? rtnl_link_unregister+0x250/0x250 [ 67.782402][ T5087] ? __kmem_cache_alloc_node+0x48/0x320 [ 67.787987][ T5087] rtnl_newlink+0x68/0xa0 [ 67.792345][ T5087] ? __rtnl_newlink+0x1840/0x1840 [ 67.797394][ T5087] rtnetlink_rcv_msg+0x43d/0xd50 [ 67.802356][ T5087] ? rtnl_stats_set+0x4d0/0x4d0 [ 67.807220][ T5087] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 67.813213][ T5087] ? lock_downgrade+0x690/0x690 [ 67.818073][ T5087] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 67.824074][ T5087] netlink_rcv_skb+0x165/0x440 [ 67.828947][ T5087] ? rtnl_stats_set+0x4d0/0x4d0 [ 67.833921][ T5087] ? netlink_ack+0x1360/0x1360 [ 67.838713][ T5087] ? netlink_deliver_tap+0x1b1/0xcf0 [ 67.844017][ T5087] netlink_unicast+0x547/0x7f0 [ 67.848987][ T5087] ? netlink_attachskb+0x890/0x890 [ 67.854109][ T5087] ? __virt_addr_valid+0x61/0x2e0 [ 67.859154][ T5087] ? __phys_addr_symbol+0x30/0x70 [ 67.864198][ T5087] ? __check_object_size+0x333/0x6e0 [ 67.869517][ T5087] netlink_sendmsg+0x925/0xe30 [ 67.874304][ T5087] ? netlink_unicast+0x7f0/0x7f0 [ 67.879253][ T5087] ? __might_fault+0xb2/0x190 [ 67.883958][ T5087] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 67.889267][ T5087] ? netlink_unicast+0x7f0/0x7f0 [ 67.894247][ T5087] sock_sendmsg+0xde/0x190 [ 67.898679][ T5087] __sys_sendto+0x23a/0x340 [ 67.903199][ T5087] ? __ia32_sys_getpeername+0xb0/0xb0 [ 67.908723][ T5087] ? xfd_validate_state+0x5d/0x180 [ 67.913866][ T5087] __x64_sys_sendto+0xe1/0x1b0 [ 67.918670][ T5087] ? syscall_enter_from_user_mode+0x26/0xb0 [ 67.924584][ T5087] do_syscall_64+0x39/0xb0 [ 67.929019][ T5087] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 67.934934][ T5087] RIP: 0033:0x7fe43563e12c [ 67.939357][ 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 [ 67.959000][ T5087] RSP: 002b:00007ffd9b2e4e30 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 67.967430][ T5087] RAX: ffffffffffffffda RBX: 00007fe4362d4620 RCX: 00007fe43563e12c [ 67.975418][ T5087] RDX: 000000000000002c RSI: 00007fe4362d4670 RDI: 0000000000000003 [ 67.983454][ T5087] RBP: 0000000000000000 R08: 00007ffd9b2e4e84 R09: 000000000000000c [ 67.991664][ T5087] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 67.999652][ T5087] R13: 00007fe4362d4670 R14: 0000000000000003 R15: 0000000000000000 [ 68.007676][ T5087] [ 68.039569][ T5087] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.047483][ T5087] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.055192][ T5087] bridge_slave_0: entered allmulticast mode [ 68.061838][ T5087] bridge_slave_0: entered promiscuous mode [ 68.072093][ T5087] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.079346][ T5087] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.086997][ T5087] bridge_slave_1: entered allmulticast mode [ 68.093605][ T5087] bridge_slave_1: entered promiscuous mode [ 68.116980][ T5087] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.128480][ T5087] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.153290][ T5087] team0: Port device team_slave_0 added [ 68.161249][ T5087] team0: Port device team_slave_1 added [ 68.184172][ T5087] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 68.191234][ 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. [ 68.217417][ T5087] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 68.230416][ T5087] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 68.237505][ 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. [ 68.263587][ T5087] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 68.296771][ T5087] hsr_slave_0: entered promiscuous mode [ 68.303030][ T5087] hsr_slave_1: entered promiscuous mode [ 68.394674][ T5087] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 68.405616][ T5087] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.415619][ T5087] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.425231][ T5087] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.450255][ T5087] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.457504][ T5087] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.465552][ T5087] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.472776][ T5087] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.486432][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.494615][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.542645][ T5087] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.558580][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.569422][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.581257][ T5087] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.591609][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 68.601068][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 68.609948][ T5098] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.617309][ T5098] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.629456][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 68.639069][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.647887][ T2492] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.655041][ T2492] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.668225][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 68.679288][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 68.693170][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 68.702210][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.719885][ T5087] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 68.730859][ T5087] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 68.743827][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.753147][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 68.762326][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.771055][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 68.780163][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.790061][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 68.798623][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.810290][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.950274][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.957923][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.972027][ T5087] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.995825][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 69.004691][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 69.019102][ T5087] veth0_vlan: entered promiscuous mode [ 69.026401][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 69.035483][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 69.045425][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 69.053263][ T2492] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 69.068084][ T5087] veth1_vlan: entered promiscuous mode [ 69.088921][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 69.097479][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 69.106390][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 69.115774][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 69.126320][ T5087] veth0_macvtap: entered promiscuous mode [ 69.137202][ T5087] veth1_macvtap: entered promiscuous mode [ 69.154683][ T5087] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 69.162163][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 69.171104][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 69.179406][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 69.188274][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 69.200337][ T5087] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 69.211163][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 69.220379][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 69.231525][ T5087] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.241477][ T5087] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.250579][ T5087] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.259963][ T5087] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.328286][ T12] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 69.342398][ T12] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 69.360958][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 69.370871][ T12] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 69.380433][ T12] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 69.390539][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2023/03/15 02:22:53 building call list... [ 69.435251][ T4400] Bluetooth: hci0: command 0x0409 tx timeout executing program [ 71.497238][ T5079] 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. [ 71.687495][ T5079] can: request_module (can-proto-0) failed. [ 71.726915][ T5079] can: request_module (can-proto-0) failed. [ 71.766378][ T5079] can: request_module (can-proto-0) failed. [ 72.192787][ T1006] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program