DUID 00:04:87:e9:86:9c:37:5a:86:1a:3e:7a:33:57:0c:76:7d:1a forked to background, child pid 4659 [ 35.251750][ T4660] 8021q: adding VLAN 0 to HW filter on device bond0 [ 35.274901][ T4660] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.170' (ECDSA) to the list of known hosts. 2023/03/11 10:07:35 fuzzer started 2023/03/11 10:07:35 connecting to host at 10.128.0.169:44273 2023/03/11 10:07:35 checking machine... 2023/03/11 10:07:35 checking revisions... 2023/03/11 10:07:36 testing simple program... syzkaller login: [ 53.892323][ T5084] cgroup: Unknown subsys name 'net' [ 54.000772][ T5084] cgroup: Unknown subsys name 'rlimit' [ 54.101243][ T5075] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5075 'syz-fuzzer' [ 54.221968][ T5088] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 54.230023][ T5088] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 54.237870][ T5088] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 54.246346][ T5088] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 54.254830][ T5088] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 54.262457][ T5088] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 54.384838][ T5086] chnl_net:caif_netlink_parms(): no params data found [ 54.407057][ T5086] [ 54.409579][ T5086] ============================= [ 54.415165][ T5086] WARNING: suspicious RCU usage [ 54.420027][ T5086] 6.3.0-rc1-syzkaller-00144-g064d70527aaa #0 Not tainted [ 54.427136][ T5086] ----------------------------- [ 54.432025][ T5086] drivers/net/veth.c:1265 suspicious rcu_dereference_check() usage! [ 54.440285][ T5086] [ 54.440285][ T5086] other info that might help us debug this: [ 54.440285][ T5086] [ 54.450621][ T5086] [ 54.450621][ T5086] rcu_scheduler_active = 2, debug_locks = 1 [ 54.458756][ T5086] 1 lock held by syz-executor.0/5086: [ 54.464269][ T5086] #0: ffffffff8e102ec8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 [ 54.474241][ T5086] [ 54.474241][ T5086] stack backtrace: [ 54.480156][ T5086] CPU: 0 PID: 5086 Comm: syz-executor.0 Not tainted 6.3.0-rc1-syzkaller-00144-g064d70527aaa #0 [ 54.491117][ T5086] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 54.501173][ T5086] Call Trace: [ 54.504749][ T5086] [ 54.507694][ T5086] dump_stack_lvl+0x136/0x150 [ 54.512393][ T5086] lockdep_rcu_suspicious+0x208/0x3a0 [ 54.517863][ T5086] veth_set_xdp_features+0x1c7/0x250 [ 54.523177][ T5086] veth_newlink+0x729/0x9d0 [ 54.527692][ T5086] ? veth_set_features+0x1e0/0x1e0 [ 54.532974][ T5086] ? __rtnl_newlink+0xfd4/0x1840 [ 54.537928][ T5086] ? rtnl_newlink+0x68/0xa0 [ 54.542443][ T5086] ? rtnetlink_rcv_msg+0x43d/0xd50 [ 54.547570][ T5086] ? netlink_rcv_skb+0x165/0x440 [ 54.552579][ T5086] ? netlink_unicast+0x547/0x7f0 [ 54.557729][ T5086] ? netlink_sendmsg+0x925/0xe30 [ 54.562677][ T5086] ? sock_sendmsg+0xde/0x190 [ 54.567285][ T5086] ? __sys_sendto+0x23a/0x340 [ 54.571992][ T5086] ? __x64_sys_sendto+0xe1/0x1b0 [ 54.576969][ T5086] ? do_syscall_64+0x39/0xb0 [ 54.581663][ T5086] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.588359][ T5086] ? find_held_lock+0x2d/0x110 [ 54.593229][ T5086] ? __kmem_cache_alloc_node+0x48/0x320 [ 54.598818][ T5086] ? kvmalloc_node+0xa2/0x1a0 [ 54.603514][ T5086] ? rcu_read_lock_sched_held+0x3e/0x70 [ 54.609080][ T5086] ? trace_kmalloc+0xb4/0x110 [ 54.613762][ T5086] ? __kmalloc_node+0x77/0xd0 [ 54.618447][ T5086] ? __xdp_rxq_info_reg+0x18d/0x340 [ 54.623658][ T5086] ? alloc_netdev_mqs+0xdce/0x1250 [ 54.628806][ T5086] ? rtnl_create_link+0x9d8/0xee0 [ 54.633876][ T5086] ? veth_set_features+0x1e0/0x1e0 [ 54.639114][ T5086] __rtnl_newlink+0x10c2/0x1840 [ 54.644359][ T5086] ? rtnl_link_unregister+0x250/0x250 [ 54.649889][ T5086] rtnl_newlink+0x68/0xa0 [ 54.654334][ T5086] ? __rtnl_newlink+0x1840/0x1840 [ 54.659385][ T5086] rtnetlink_rcv_msg+0x43d/0xd50 [ 54.664390][ T5086] ? rtnl_stats_set+0x4d0/0x4d0 [ 54.669356][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 54.675343][ T5086] ? do_syscall_64+0x39/0xb0 [ 54.679944][ T5086] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.686046][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 54.692034][ T5086] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 54.698138][ T5086] netlink_rcv_skb+0x165/0x440 [ 54.703020][ T5086] ? rtnl_stats_set+0x4d0/0x4d0 [ 54.707888][ T5086] ? netlink_ack+0x1360/0x1360 [ 54.712686][ T5086] ? netlink_deliver_tap+0x1b1/0xcf0 [ 54.717994][ T5086] netlink_unicast+0x547/0x7f0 [ 54.722946][ T5086] ? netlink_attachskb+0x890/0x890 [ 54.728071][ T5086] ? __virt_addr_valid+0x61/0x2e0 [ 54.733132][ T5086] ? __phys_addr_symbol+0x30/0x70 [ 54.738180][ T5086] ? __check_object_size+0x333/0x6e0 [ 54.743645][ T5086] netlink_sendmsg+0x925/0xe30 [ 54.748536][ T5086] ? netlink_unicast+0x7f0/0x7f0 [ 54.753686][ T5086] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 54.758980][ T5086] ? netlink_unicast+0x7f0/0x7f0 [ 54.763940][ T5086] sock_sendmsg+0xde/0x190 [ 54.768382][ T5086] __sys_sendto+0x23a/0x340 [ 54.772952][ T5086] ? __ia32_sys_getpeername+0xb0/0xb0 [ 54.778625][ T5086] ? restore_fpregs_from_fpstate+0xc1/0x1c0 [ 54.784577][ T5086] __x64_sys_sendto+0xe1/0x1b0 [ 54.789446][ T5086] ? syscall_enter_from_user_mode+0x26/0xb0 [ 54.795373][ T5086] do_syscall_64+0x39/0xb0 [ 54.799872][ T5086] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 54.805883][ T5086] RIP: 0033:0x7f724663e12c [ 54.810846][ 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 [ 54.830987][ T5086] RSP: 002b:00007ffc3d5f2a40 EFLAGS: 00000293 ORIG_RAX: 000000000000002c [ 54.839688][ T5086] RAX: ffffffffffffffda RBX: 00007f72472d4620 RCX: 00007f724663e12c [ 54.847853][ T5086] RDX: 000000000000002c RSI: 00007f72472d4670 RDI: 0000000000000003 [ 54.855828][ T5086] RBP: 0000000000000000 R08: 00007ffc3d5f2a94 R09: 000000000000000c [ 54.863901][ T5086] R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 [ 54.871906][ T5086] R13: 00007f72472d4670 R14: 0000000000000003 R15: 0000000000000000 [ 54.880098][ T5086] [ 54.912105][ T5086] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.920058][ T5086] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.927646][ T5086] bridge_slave_0: entered allmulticast mode [ 54.934806][ T5086] bridge_slave_0: entered promiscuous mode [ 54.943315][ T5086] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.951401][ T5086] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.958945][ T5086] bridge_slave_1: entered allmulticast mode [ 54.965648][ T5086] bridge_slave_1: entered promiscuous mode [ 54.988178][ T5086] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.999264][ T5086] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.022691][ T5086] team0: Port device team_slave_0 added [ 55.030268][ T5086] team0: Port device team_slave_1 added [ 55.049673][ T5086] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 55.056874][ 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. [ 55.083530][ T5086] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 55.096770][ T5086] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 55.104000][ 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. [ 55.130523][ T5086] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 55.161651][ T5086] hsr_slave_0: entered promiscuous mode [ 55.168003][ T5086] hsr_slave_1: entered promiscuous mode [ 55.258185][ T5086] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 55.270211][ T5086] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 55.279710][ T5086] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 55.289011][ T5086] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 55.310524][ T5086] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.317876][ T5086] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.325941][ T5086] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.333119][ T5086] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.359173][ T900] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.369446][ T900] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.404535][ T5086] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.418252][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.428639][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.440477][ T5086] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.452515][ T1115] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 55.461754][ T1115] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 55.471671][ T1115] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.478816][ T1115] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.491758][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 55.500698][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 55.510318][ T5098] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.517666][ T5098] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.542301][ T5086] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 55.554395][ T5086] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 55.566404][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 55.576333][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 55.585469][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 55.594424][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 55.602925][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 55.612049][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 55.620755][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 55.629339][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 55.638328][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 55.647240][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 55.656784][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 55.664823][ T5098] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 55.796554][ T1115] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 55.805148][ T1115] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 55.819531][ T5086] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 55.836827][ T1115] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 55.845747][ T1115] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 55.864534][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 55.873015][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 55.885632][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 55.893574][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 55.901922][ T5086] veth0_vlan: entered promiscuous mode [ 55.912332][ T5086] veth1_vlan: entered promiscuous mode [ 55.935598][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 55.944422][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 55.952584][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 55.961620][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 55.972705][ T5086] veth0_macvtap: entered promiscuous mode [ 55.982945][ T5086] veth1_macvtap: entered promiscuous mode [ 55.998416][ T5086] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 56.006935][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 56.015465][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 56.023712][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 56.032917][ T900] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 56.045246][ T5086] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 56.053214][ T1115] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 56.062348][ T1115] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 56.074619][ T5086] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.084571][ T5086] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.093365][ T5086] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.103005][ T5086] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 56.170361][ T41] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.188540][ T41] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.198877][ T1115] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 56.201510][ T41] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 56.215552][ T41] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 56.226406][ T1115] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2023/03/11 10:07:38 building call list... [ 56.314684][ T4402] Bluetooth: hci0: command 0x0409 tx timeout executing program [ 58.182332][ T5082] 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. [ 58.388155][ T5082] can: request_module (can-proto-0) failed. [ 58.423367][ T5082] can: request_module (can-proto-0) failed. [ 58.459229][ T5082] can: request_module (can-proto-0) failed. [ 59.002043][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program