syzkaller login: [ 114.575048][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 114.586165][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 114.600788][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:37726' (ECDSA) to the list of known hosts. 1970/01/01 00:02:39 fuzzer started 1970/01/01 00:02:44 connecting to host at localhost:45253 1970/01/01 00:02:44 checking machine... 1970/01/01 00:02:44 checking revisions... 1970/01/01 00:02:46 testing simple program... [ 167.265483][ T3063] cgroup: Unknown subsys name 'net' executing program [ 167.816451][ T3063] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 174.086708][ T3066] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 174.117035][ T3066] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 177.036744][ T3066] device hsr_slave_0 entered promiscuous mode [ 177.095358][ T3066] device hsr_slave_1 entered promiscuous mode [ 178.836782][ T3066] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 178.921726][ T3066] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 178.996147][ T3066] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 179.077062][ T3066] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 181.355853][ T3066] 8021q: adding VLAN 0 to HW filter on device bond0 [ 181.484236][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 181.526864][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 182.925041][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 182.935759][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 183.012629][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 183.031557][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 183.113488][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 183.238366][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 183.398307][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 183.408428][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 183.502446][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 183.507468][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 183.558170][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 184.618342][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 184.620644][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 187.875155][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 187.894349][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 189.223753][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 189.241360][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 189.261038][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 189.276306][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 189.308209][ T3066] device veth0_vlan entered promiscuous mode [ 189.424020][ T3066] device veth1_vlan entered promiscuous mode [ 189.681670][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 189.695104][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 189.742641][ T3066] device veth0_macvtap entered promiscuous mode [ 189.798279][ T3066] device veth1_macvtap entered promiscuous mode [ 189.926725][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 189.934898][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 189.946015][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 189.954758][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 190.010348][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 190.016751][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 190.063879][ T3066] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 190.065075][ T3066] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 190.065519][ T3066] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 190.065935][ T3066] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:03:11 building call list... executing program [ 192.566024][ T937] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 192.873771][ T937] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 193.170201][ T937] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 193.486291][ T937] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 197.326113][ T937] device hsr_slave_0 left promiscuous mode [ 197.393162][ T937] device hsr_slave_1 left promiscuous mode [ 197.660496][ T937] device veth1_macvtap left promiscuous mode [ 197.663984][ T937] device veth0_macvtap left promiscuous mode [ 197.677851][ T937] device veth1_vlan left promiscuous mode [ 197.682457][ T937] device veth0_vlan left promiscuous mode executing program executing program [ 201.472097][ T937] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 201.616419][ T937] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 202.411587][ T937] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 213.594156][ T3058] can: request_module (can-proto-0) failed. [ 214.030551][ T937] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 214.032049][ T937] leaked reference. [ 214.035095][ T937] ipv6_add_dev+0x300/0xeec [ 214.035784][ T937] addrconf_notify+0x3ac/0x1080 [ 214.036229][ T937] notifier_call_chain+0xc0/0x180 [ 214.036666][ T937] raw_notifier_call_chain+0x18/0x24 [ 214.037106][ T937] call_netdevice_notifiers_info+0x80/0xe0 [ 214.037551][ T937] register_netdevice+0xa7c/0x1094 [ 214.037992][ T937] register_netdev+0x24/0x4c [ 214.038480][ T937] loopback_net_init+0x6c/0x124 [ 214.039028][ T937] ops_init+0x8c/0x46c [ 214.039550][ T937] setup_net+0x638/0xbec [ 214.040018][ T937] copy_net_ns+0x1fc/0x560 [ 214.040440][ T937] create_new_namespaces+0x300/0x840 [ 214.040874][ T937] unshare_nsproxy_namespaces+0x7c/0x174 [ 214.041436][ T937] ksys_unshare+0x284/0x580 [ 214.041867][ T937] __arm64_sys_unshare+0x30/0x50 [ 214.042293][ T937] invoke_syscall+0x6c/0x260 [ 214.114121][ T3058] can: request_module (can-proto-0) failed. [ 214.346648][ T3058] can: request_module (can-proto-0) failed. executing program executing program executing program [ 224.140442][ T937] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 224.141177][ T937] leaked reference. [ 224.141489][ T937] ipv6_add_dev+0x300/0xeec [ 224.141938][ T937] addrconf_notify+0x3ac/0x1080 [ 224.142298][ T937] notifier_call_chain+0xc0/0x180 [ 224.142687][ T937] raw_notifier_call_chain+0x18/0x24 [ 224.143021][ T937] call_netdevice_notifiers_info+0x80/0xe0 [ 224.143414][ T937] register_netdevice+0xa7c/0x1094 [ 224.143819][ T937] register_netdev+0x24/0x4c [ 224.144197][ T937] loopback_net_init+0x6c/0x124 [ 224.144535][ T937] ops_init+0x8c/0x46c [ 224.144863][ T937] setup_net+0x638/0xbec [ 224.145267][ T937] copy_net_ns+0x1fc/0x560 [ 224.145647][ T937] create_new_namespaces+0x300/0x840 [ 224.146043][ T937] unshare_nsproxy_namespaces+0x7c/0x174 [ 224.146372][ T937] ksys_unshare+0x284/0x580 [ 224.146688][ T937] __arm64_sys_unshare+0x30/0x50 [ 224.147058][ T937] invoke_syscall+0x6c/0x260 executing program executing program executing program executing program [ 234.201309][ T937] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 234.202512][ T937] leaked reference. [ 234.202909][ T937] ipv6_add_dev+0x300/0xeec [ 234.203392][ T937] addrconf_notify+0x3ac/0x1080 [ 234.203978][ T937] notifier_call_chain+0xc0/0x180 [ 234.204457][ T937] raw_notifier_call_chain+0x18/0x24 [ 234.205194][ T937] call_netdevice_notifiers_info+0x80/0xe0 [ 234.205904][ T937] register_netdevice+0xa7c/0x1094 [ 234.206430][ T937] register_netdev+0x24/0x4c [ 234.206987][ T937] loopback_net_init+0x6c/0x124 [ 234.207601][ T937] ops_init+0x8c/0x46c [ 234.208221][ T937] setup_net+0x638/0xbec [ 234.208684][ T937] copy_net_ns+0x1fc/0x560 [ 234.209189][ T937] create_new_namespaces+0x300/0x840 [ 234.209831][ T937] unshare_nsproxy_namespaces+0x7c/0x174 [ 234.210543][ T937] ksys_unshare+0x284/0x580 [ 234.211168][ T937] __arm64_sys_unshare+0x30/0x50 [ 234.211849][ T937] invoke_syscall+0x6c/0x260 [ 235.097686][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 235.133592][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 235.152100][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 235.158034][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 18:02:58 Registers: info registers vcpu 0 PC=ffff8000082a2ff0 X00=0000000000000000 X01=ffff800013176e60 X02=00000000000003fc X03=00000000000003fc X04=1ffff000020b0b80 X05=0000000000000030 X06=ffff80001039caf0 X07=0000000000000003 X08=ffff80000f85c000 X09=0000000000000003 X10=ffff800010c00d60 X11=0000000000000000 X12=00000000f1f1f1f1 X13=1ffff0000262ed9e X14=1ffff0000262ee20 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a93ac00 X19=0000000000000000 X20=dfff800000000000 X21=0000000000000030 X22=1ffff000020b0b7d X23=ffff800013176e60 X24=ffff800010585be8 X25=ffff80000faff360 X26=ffff80000fb07360 X27=ffff80000f85c9c0 X28=ffff800010585bd8 X29=ffff800013176c40 X30=ffff8000082a2ff0 SP=ffff800013176c40 PSTATE=400000c5 -Z-- EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:0000000000000004 Q01=0000000000000000:414fffffe0000000 Q02=315cef6d8361bfa9:f49445f2ae7ff0c4 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=0000000000000010:0000002490b441a0 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000082aa778 X00=ffff800010d140b0 X01=0000000000000000 X02=0000000000000003 X03=1fffe00001b2f7f9 X04=00000000f204f1f1 X05=ffff7000023e4e96 X06=dfff800000000000 X07=00000000f1f1f1f1 X08=ffff800011f276e3 X09=dfff800000000000 X10=0000000000000000 X11=0000000000000007 X12=0000000000000000 X13=7fffffffffffffff X14=ffe4e6b8b3a2b1b1 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=ffff800011f27a90 X20=ffff000012c0a758 X21=1ffff000023e4f59 X22=ffff000015e50500 X23=ffff00000d97b600 X24=dfff800000000000 X25=ffff800011f27a90 X26=ffff80005c792000 X27=1ffff000023e4f5c X28=ffff00000d97b600 X29=ffff800011f27660 X30=ffff80000cb3b150 SP=ffff800011f276d0 PSTATE=800000c5 N--- EL1h FPCR=00000000 FPSR=00000000 Q00=2f2f2f2f2f2f2f2f:2f2f2f2f2f2f2f2f Q01=6f73657262696c00:0000000000000008 Q02=7265645f4d54495f:00322e6f732e766c Q03=0000000000000002:8020080280200800 Q04=0000000000000000:8000000000000000 Q05=0000000000000000:0000000000000000 Q06=0000000000000000:0000000000000000 Q07=8020080280200802:8020080280200802 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=4010040140100401:4010040140100401 Q17=0000000080000000:000080000002aaa8 Q18=0000000000000000:8000000000000000 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=0000000000000000:0000000000000000 Q31=0000000000000000:0000000000000000