syzkaller login: [ 115.623504][ T2906] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 115.634602][ T2906] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 115.645508][ T2906] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:42267' (ECDSA) to the list of known hosts. 1970/01/01 00:02:33 fuzzer started 1970/01/01 00:02:38 connecting to host at localhost:44301 1970/01/01 00:02:38 checking machine... 1970/01/01 00:02:38 checking revisions... 1970/01/01 00:02:40 testing simple program... [ 161.368732][ T3066] cgroup: Unknown subsys name 'net' executing program [ 161.926808][ T3066] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 169.261808][ T3069] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 169.293910][ T3069] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 172.285955][ T3069] device hsr_slave_0 entered promiscuous mode [ 172.346320][ T3069] device hsr_slave_1 entered promiscuous mode executing program [ 174.309810][ T3069] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 174.414078][ T3069] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 174.520090][ T3069] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 174.610144][ T3069] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 176.911560][ T3069] 8021q: adding VLAN 0 to HW filter on device bond0 [ 177.005047][ T3247] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 177.032162][ T3247] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 178.336521][ T1723] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 178.355812][ T1723] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 178.402923][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 178.409522][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 178.497865][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 178.554321][ T3247] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 178.758813][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 178.765592][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 178.832197][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 178.842780][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 178.895647][ T3069] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 180.172077][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 180.174143][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 183.049241][ T1723] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 183.054720][ T1723] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 184.448976][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 184.464583][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 184.505130][ T3069] device veth0_vlan entered promiscuous mode [ 184.513783][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 184.524838][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 184.607775][ T3069] device veth1_vlan entered promiscuous mode [ 184.923094][ T1723] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 184.936484][ T1723] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 185.019519][ T3069] device veth0_macvtap entered promiscuous mode [ 185.072962][ T3069] device veth1_macvtap entered promiscuous mode [ 185.214212][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 185.223435][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 185.236705][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 185.245169][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 185.340294][ T1723] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 185.358196][ T1723] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 185.474189][ T3069] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 185.475668][ T3069] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 185.476326][ T3069] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 185.478251][ T3069] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:03:07 building call list... [ 188.059340][ T1900] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 188.310882][ T1900] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 188.514671][ T1900] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 188.786056][ T1900] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program executing program [ 192.263503][ T1900] device hsr_slave_0 left promiscuous mode [ 192.333621][ T1900] device hsr_slave_1 left promiscuous mode [ 192.624335][ T1900] device veth1_macvtap left promiscuous mode [ 192.626354][ T1900] device veth0_macvtap left promiscuous mode [ 192.634220][ T1900] device veth1_vlan left promiscuous mode [ 192.636454][ T1900] device veth0_vlan left promiscuous mode executing program [ 196.230785][ T1900] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 196.401504][ T1900] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 197.183537][ T1900] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 209.299978][ T1900] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 209.301348][ T1900] leaked reference. [ 209.302277][ T1900] ipv6_add_dev+0x300/0xeec [ 209.306844][ T1900] addrconf_notify+0x3ac/0x1080 [ 209.307542][ T1900] notifier_call_chain+0xc0/0x180 [ 209.308088][ T1900] raw_notifier_call_chain+0x18/0x24 [ 209.308489][ T1900] call_netdevice_notifiers_info+0x80/0xe0 [ 209.308905][ T1900] register_netdevice+0xa7c/0x1094 [ 209.309312][ T1900] register_netdev+0x24/0x4c [ 209.309748][ T1900] loopback_net_init+0x6c/0x124 [ 209.310417][ T1900] ops_init+0x8c/0x46c [ 209.310831][ T1900] setup_net+0x638/0xbec [ 209.311218][ T1900] copy_net_ns+0x1fc/0x560 [ 209.311615][ T1900] create_new_namespaces+0x300/0x840 [ 209.312187][ T1900] unshare_nsproxy_namespaces+0x7c/0x174 [ 209.312722][ T1900] ksys_unshare+0x284/0x580 [ 209.313304][ T1900] __arm64_sys_unshare+0x30/0x50 [ 209.313806][ T1900] invoke_syscall+0x6c/0x260 executing program [ 211.675616][ T3064] can: request_module (can-proto-0) failed. [ 212.104105][ T3064] can: request_module (can-proto-0) failed. [ 212.390391][ T3064] can: request_module (can-proto-0) failed. executing program executing program executing program [ 219.469775][ T1900] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 219.474784][ T1900] leaked reference. [ 219.475983][ T1900] ipv6_add_dev+0x300/0xeec [ 219.477382][ T1900] addrconf_notify+0x3ac/0x1080 [ 219.478256][ T1900] notifier_call_chain+0xc0/0x180 [ 219.478670][ T1900] raw_notifier_call_chain+0x18/0x24 [ 219.479061][ T1900] call_netdevice_notifiers_info+0x80/0xe0 [ 219.479495][ T1900] register_netdevice+0xa7c/0x1094 [ 219.479881][ T1900] register_netdev+0x24/0x4c [ 219.480256][ T1900] loopback_net_init+0x6c/0x124 [ 219.480674][ T1900] ops_init+0x8c/0x46c [ 219.481033][ T1900] setup_net+0x638/0xbec [ 219.481383][ T1900] copy_net_ns+0x1fc/0x560 [ 219.481750][ T1900] create_new_namespaces+0x300/0x840 [ 219.482137][ T1900] unshare_nsproxy_namespaces+0x7c/0x174 [ 219.482520][ T1900] ksys_unshare+0x284/0x580 [ 219.482881][ T1900] __arm64_sys_unshare+0x30/0x50 [ 219.483276][ T1900] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 229.579396][ T1900] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 229.580188][ T1900] leaked reference. [ 229.580587][ T1900] ipv6_add_dev+0x300/0xeec [ 229.581035][ T1900] addrconf_notify+0x3ac/0x1080 [ 229.581430][ T1900] notifier_call_chain+0xc0/0x180 [ 229.581836][ T1900] raw_notifier_call_chain+0x18/0x24 [ 229.582236][ T1900] call_netdevice_notifiers_info+0x80/0xe0 [ 229.582706][ T1900] register_netdevice+0xa7c/0x1094 [ 229.584411][ T1900] register_netdev+0x24/0x4c [ 229.585674][ T1900] loopback_net_init+0x6c/0x124 [ 229.587313][ T1900] ops_init+0x8c/0x46c [ 229.588757][ T1900] setup_net+0x638/0xbec [ 229.590143][ T1900] copy_net_ns+0x1fc/0x560 [ 229.591661][ T1900] create_new_namespaces+0x300/0x840 [ 229.593364][ T1900] unshare_nsproxy_namespaces+0x7c/0x174 [ 229.593822][ T1900] ksys_unshare+0x284/0x580 [ 229.594207][ T1900] __arm64_sys_unshare+0x30/0x50 [ 229.594626][ T1900] invoke_syscall+0x6c/0x260 executing program [ 232.095354][ T2906] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 232.126757][ T2906] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 232.133673][ T2906] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 232.150142][ T2906] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 23:02:38 Registers: info registers vcpu 0 PC=ffff800008362ba8 X00=ffff0000133b9030 X01=0000000000000000 X02=1fffe0000d52759d X03=0000000000000001 X04=ffff800018c075c0 X05=ffff700003180e84 X06=ffff00000e2dd100 X07=00000000f2f2f2f2 X08=00000000f3f3f300 X09=00000000f2000000 X10=00000000f204f204 X11=00000000f3f3f3f3 X12=00000000f1f1f1f1 X13=0000000000000000 X14=1ffff00003180e52 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a93ac00 X19=ffff80000e435ab0 X20=0000000000000000 X21=0000000000000003 X22=0000000000000028 X23=ffff80000e435b40 X24=dfff800000000000 X25=ffff80000e435a80 X26=0000000000000004 X27=ffff80000e435ab0 X28=ffff000010846570 X29=ffff800018c07300 X30=ffff8000083a3458 SP=ffff800018c07300 PSTATE=200000c5 --C- EL1h FPCR=00000000 FPSR=00000000 Q00=0000000000000000:0000000000000000 Q01=0000000000000000:0000000000000000 Q02=0000000000000000:0000000000000000 Q03=0000000000000000:0000000000000000 Q04=0000000000000000:0000000000000000 Q05=0000000000000000:0000000000000000 Q06=0000000000000000:0000000000000000 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=0000000000000000:0000000000000000 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000082aac80 X00=ffff80005c792000 X01=00000000000000c0 X02=0000000000000000 X03=1fffe00001ad8001 X04=1fffe00001ad8003 X05=ffff7000022acee2 X06=dfff800000000000 X07=00000000f1f1f1f1 X08=ffff00000d6c0a18 X09=0000000000000028 X10=ffff00000d6c09b4 X11=0000000000000007 X12=1fffe00001ad8136 X13=1fffe00001ad8143 X14=1ffff000022acebe X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=ffff7000022ace98 X20=ffff800008010000 X21=0000000000000001 X22=0000000000000001 X23=ffff800008e0036c X24=ffff80000e1c7c88 X25=ffff80000cbe28e0 X26=0000000000000001 X27=0000000000000000 X28=ffff00000d6c0000 X29=ffff800011567840 X30=ffff800008e003c4 SP=ffff800011567840 PSTATE=100000c5 ---V EL1h FPCR=00000000 FPSR=00000010 Q00=2046bd55f37f9096:eb6da09165340523 Q01=74616e65706f6e6f:69747365676e6f63 Q02=804778063463a20b:598b8b7f3b0ed0f9 Q03=0000000000000000:0000040000000000 Q04=0000000000000001:0000000100000000 Q05=4010040140100401:4010040140100401 Q06=0001010000000400:0001010000000400 Q07=0000000000000000:3feaaaaaaaaaaaab Q08=0000000000000000:3fcc3e81e02cf504 Q09=0000000000000000:3fe1c8f649b4005d 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=000000000000000c:0000000064db3117 Q31=0000000000000000:0000000000000000