syzkaller login: [ 125.561115][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 125.572462][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 125.591531][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 125.619658][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:14822' (ECDSA) to the list of known hosts. 1970/01/01 00:02:57 fuzzer started 1970/01/01 00:03:02 connecting to host at localhost:37091 1970/01/01 00:03:02 checking machine... 1970/01/01 00:03:02 checking revisions... 1970/01/01 00:03:04 testing simple program... executing program [ 185.717900][ T3071] cgroup: Unknown subsys name 'net' [ 186.623056][ T3071] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 194.155632][ T3074] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 194.176719][ T3074] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 197.173075][ T3074] device hsr_slave_0 entered promiscuous mode [ 197.231388][ T3074] device hsr_slave_1 entered promiscuous mode executing program [ 199.123077][ T3074] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 199.200127][ T3074] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 199.302620][ T3074] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 199.431771][ T3074] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 201.840708][ T3074] 8021q: adding VLAN 0 to HW filter on device bond0 [ 201.961134][ T1720] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 201.992063][ T1720] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 203.674645][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 203.681386][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready executing program [ 203.789809][ T3391] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 203.802344][ T3391] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 203.849281][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 203.912411][ T3391] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 204.060281][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 204.081790][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 204.152653][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 204.168972][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 204.247010][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 205.563180][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 205.566264][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 209.403399][ T3391] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 209.412925][ T3391] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 211.185602][ T1720] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 211.193101][ T1720] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 211.237747][ T1720] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 211.243102][ T1720] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 211.291776][ T3074] device veth0_vlan entered promiscuous mode [ 211.359253][ T3074] device veth1_vlan entered promiscuous mode [ 211.627346][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 211.647468][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 211.683164][ T3074] device veth0_macvtap entered promiscuous mode [ 211.758909][ T3074] device veth1_macvtap entered promiscuous mode [ 211.929360][ T3391] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 211.941299][ T3391] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 211.963026][ T3391] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 211.970390][ T3391] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 212.050727][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 212.071631][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 212.152036][ T3074] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 212.155416][ T3074] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 212.161283][ T3074] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 212.162754][ T3074] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:03:34 building call list... [ 215.029303][ T51] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 215.258888][ T51] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 215.500097][ T51] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 215.810551][ T51] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 219.422293][ T51] device hsr_slave_0 left promiscuous mode [ 219.499251][ T51] device hsr_slave_1 left promiscuous mode [ 219.742037][ T51] device veth1_macvtap left promiscuous mode [ 219.756283][ T51] device veth0_macvtap left promiscuous mode [ 219.759316][ T51] device veth1_vlan left promiscuous mode [ 219.764655][ T51] device veth0_vlan left promiscuous mode executing program [ 223.560753][ T51] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 223.701866][ T51] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface executing program [ 224.992547][ T51] bond0 (unregistering): Released all slaves executing program executing program executing program [ 237.365202][ T51] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 237.366609][ T51] leaked reference. [ 237.368098][ T51] ipv6_add_dev+0x300/0xeec [ 237.370261][ T51] addrconf_notify+0x3ac/0x1080 [ 237.370727][ T51] notifier_call_chain+0xc0/0x180 [ 237.371147][ T51] raw_notifier_call_chain+0x18/0x24 [ 237.371548][ T51] call_netdevice_notifiers_info+0x80/0xe0 [ 237.371968][ T51] register_netdevice+0xa7c/0x1094 [ 237.372384][ T51] register_netdev+0x24/0x4c [ 237.372783][ T51] loopback_net_init+0x6c/0x124 [ 237.373198][ T51] ops_init+0x8c/0x46c [ 237.373724][ T51] setup_net+0x638/0xbec [ 237.374161][ T51] copy_net_ns+0x1fc/0x560 [ 237.374916][ T51] create_new_namespaces+0x300/0x840 [ 237.375340][ T51] unshare_nsproxy_namespaces+0x7c/0x174 [ 237.375764][ T51] ksys_unshare+0x284/0x580 [ 237.377001][ T51] __arm64_sys_unshare+0x30/0x50 [ 237.378698][ T51] invoke_syscall+0x6c/0x260 executing program executing program [ 244.201461][ T3064] can: request_module (can-proto-0) failed. [ 244.511921][ T3064] can: request_module (can-proto-0) failed. [ 244.799648][ T3064] can: request_module (can-proto-0) failed. executing program [ 247.476776][ T51] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 247.477645][ T51] leaked reference. [ 247.478282][ T51] ipv6_add_dev+0x300/0xeec [ 247.478753][ T51] addrconf_notify+0x3ac/0x1080 [ 247.479261][ T51] notifier_call_chain+0xc0/0x180 [ 247.479704][ T51] raw_notifier_call_chain+0x18/0x24 [ 247.481116][ T51] call_netdevice_notifiers_info+0x80/0xe0 [ 247.482687][ T51] register_netdevice+0xa7c/0x1094 [ 247.483153][ T51] register_netdev+0x24/0x4c [ 247.483641][ T51] loopback_net_init+0x6c/0x124 [ 247.484149][ T51] ops_init+0x8c/0x46c [ 247.484537][ T51] setup_net+0x638/0xbec [ 247.484920][ T51] copy_net_ns+0x1fc/0x560 [ 247.485299][ T51] create_new_namespaces+0x300/0x840 [ 247.485729][ T51] unshare_nsproxy_namespaces+0x7c/0x174 [ 247.486162][ T51] ksys_unshare+0x284/0x580 [ 247.486637][ T51] __arm64_sys_unshare+0x30/0x50 [ 247.487073][ T51] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 257.556006][ T51] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 257.557531][ T51] leaked reference. [ 257.557912][ T51] ipv6_add_dev+0x300/0xeec [ 257.558398][ T51] addrconf_notify+0x3ac/0x1080 [ 257.558868][ T51] notifier_call_chain+0xc0/0x180 [ 257.559325][ T51] raw_notifier_call_chain+0x18/0x24 [ 257.559810][ T51] call_netdevice_notifiers_info+0x80/0xe0 [ 257.560335][ T51] register_netdevice+0xa7c/0x1094 [ 257.560775][ T51] register_netdev+0x24/0x4c [ 257.561219][ T51] loopback_net_init+0x6c/0x124 [ 257.561688][ T51] ops_init+0x8c/0x46c [ 257.562110][ T51] setup_net+0x638/0xbec [ 257.562670][ T51] copy_net_ns+0x1fc/0x560 [ 257.563134][ T51] create_new_namespaces+0x300/0x840 [ 257.563689][ T51] unshare_nsproxy_namespaces+0x7c/0x174 [ 257.564195][ T51] ksys_unshare+0x284/0x580 [ 257.564755][ T51] __arm64_sys_unshare+0x30/0x50 [ 257.565201][ T51] invoke_syscall+0x6c/0x260 executing program [ 258.429910][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 258.443477][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 258.466600][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 258.480378][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program VM DIAGNOSIS: 02:31:58 Registers: info registers vcpu 0 PC=ffff8000082dac90 X00=0000000000000001 X01=ffff000009c5b600 X02=0000000000000000 X03=0000000000000000 X04=1ffff00001c622e3 X05=ffff8000113c71b0 X06=ffff80000e311718 X07=00008ffffdd871ca X08=ffff8000113c71b7 X09=dfff800000000000 X10=ffff700002278e36 X11=1ffff00002278e36 X12=ffff700002278e37 X13=0000000000000000 X14=000000000000000f X15=ffff80000f73e860 X16=0000000000000002 X17=0000000000000000 X18=0000000000000000 X19=ffff00006a93ace9 X20=1ffff00002278e84 X21=00000000000000c0 X22=0000000000000000 X23=ffff700002278e56 X24=ffff80000e311708 X25=80000000ffffe301 X26=ffff80000e3116e0 X27=ffff8000113c7460 X28=ffff8000113c74a0 X29=ffff8000113c71f0 X30=ffff8000082daf28 SP=ffff8000113c71f0 PSTATE=600000c5 -ZC- EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:0000000000000000 Q01=0000000000000000:41283f4000000000 Q02=0000000000000000:3fdd6c00b37c5061 Q03=0000000040000000:0000000000000000 Q04=4010040140100401:4000000000000000 Q05=4010040140100401:4010040140100401 Q06=5555400000400000:5555400000400000 Q07=0000000000000000:0000000000000000 Q08=0000000000000000:0000000000000000 Q09=0000000000000000:0000000000000000 Q10=0000000000000000:0000000000000000 Q11=0000000000000000:0000000000000000 Q12=0000000000000000:0000000000000000 Q13=0000000000000000:0000000000000000 Q14=0000000000000000:0000000000000000 Q15=0000000000000000:0000000000000000 Q16=0000000000000000:0000000000000000 Q17=0000000000000000:0000000000000000 Q18=0000000000000000:0000000000000000 Q19=0000000000000000:0000000000000000 Q20=0000000000000000:0000000000000000 Q21=0000000000000000:0000000000000000 Q22=0000000000000000:0000000000000000 Q23=0000000000000000:0000000000000000 Q24=0000000000000000:0000000000000000 Q25=0000000000000000:0000000000000000 Q26=0000000000000000:0000000000000000 Q27=0000000000000000:0000000000000000 Q28=0000000000000000:0000000000000000 Q29=0000000000000000:0000000000000000 Q30=0000000000000010:00000028e2fee200 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff80000b5fac08 X00=ffff80000b5fac00 X01=0000000000000000 X02=0000000000000001 X03=ffff00000f591b10 X04=dfff800000000000 X05=ffff00000f591b00 X06=0000000000000001 X07=00009ffffe14dca0 X08=ffff00000f591b07 X09=dfff800000000000 X10=ffff600001eb2360 X11=1fffe00001eb2360 X12=ffff600001eb2361 X13=1fffe00001eb24b2 X14=1ffff000023aeeac X15=ffff00006a959bc8 X16=ffff800010f48000 X17=ffff80005c792000 X18=ffff00006a959c00 X19=ffff80000e434a70 X20=0000000000000000 X21=0000000000000003 X22=0000000000000028 X23=ffff80000e434b00 X24=dfff800000000000 X25=ffff80000e434a40 X26=0000000000000004 X27=ffff80000e434a70 X28=ffff800011d778e0 X29=ffff800011d776f0 X30=ffff8000083a3458 SP=ffff800011d776f0 PSTATE=100000c5 ---V EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:3fd3333333333333 Q01=0000000000000000:3f9029a8101b9739 Q02=0000000000000000:3ff3333333333333 Q03=0000000000000000:416312d000000000 Q04=0000000000000000:3f87137d07e63ab6 Q05=0000000000000000:3fdace96b61e2c9c Q06=0000000000000000:3fd3333333333333 Q07=0000000000000000:3feaaaaaaaaaaaab Q08=0000000000000000:3fd218c73a7365c2 Q09=0000000000000000:3fe221af5f380927 Q10=0000000000000000:3fe0000000000000 Q11=0000000000000000:0000000000000000 Q12=0000000000000000:0000000000000000 Q13=0000000000000000:0000000000000000 Q14=0000000000000000:0000000000000000 Q15=0000000000000000:0000000000000000 Q16=0000000000000000:0000000000000000 Q17=0000000000000000:0000000000000000 Q18=0000000000000000:0000000000000000 Q19=0000000000000000:0000000000000000 Q20=0000000000000000:0000000000000000 Q21=0000000000000000:0000000000000000 Q22=0000000000000000:0000000000000000 Q23=0000000000000000:0000000000000000 Q24=0000000000000000:0000000000000000 Q25=0000000000000000:0000000000000000 Q26=0000000000000000:0000000000000000 Q27=0000000000000000:0000000000000000 Q28=0000000000000000:0000000000000000 Q29=0000000000000000:0000000000000000 Q30=0000000000000000:00000028e2fee200 Q31=0000000000000000:0000000000000000