syzkaller login: [ 115.142093][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 115.171594][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 115.179773][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:42519' (ECDSA) to the list of known hosts. 1970/01/01 00:02:35 fuzzer started 1970/01/01 00:02:39 connecting to host at localhost:45945 1970/01/01 00:02:39 checking machine... 1970/01/01 00:02:39 checking revisions... 1970/01/01 00:02:42 testing simple program... executing program [ 163.282262][ T3063] cgroup: Unknown subsys name 'net' [ 164.127759][ T3063] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 171.372616][ T3066] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 171.400669][ T3066] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 174.426494][ T3066] device hsr_slave_0 entered promiscuous mode [ 174.470458][ T3066] device hsr_slave_1 entered promiscuous mode executing program [ 176.329259][ T3066] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 176.419878][ T3066] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 176.519249][ T3066] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 176.591278][ T3066] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 178.832460][ T3066] 8021q: adding VLAN 0 to HW filter on device bond0 [ 178.932965][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 178.951365][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 180.383621][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 180.392679][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 180.442138][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 180.459798][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 180.523454][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 180.611314][ T1722] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 180.746867][ T1722] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 180.752477][ T1722] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 180.836261][ T1722] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 180.843822][ T1722] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 180.893966][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 182.132565][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 182.136117][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 185.000441][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 185.010311][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 186.427137][ T1722] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 186.432332][ T1722] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 186.452250][ T1722] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 186.462738][ T1722] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 186.518142][ T3066] device veth0_vlan entered promiscuous mode [ 186.626890][ T3066] device veth1_vlan entered promiscuous mode [ 186.868435][ T1722] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 186.873930][ T1722] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 186.940733][ T3066] device veth0_macvtap entered promiscuous mode [ 186.987409][ T3066] device veth1_macvtap entered promiscuous mode [ 187.140947][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 187.150072][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 187.162545][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 187.170404][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 187.240999][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 187.260257][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 187.339022][ T3066] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 187.340595][ T3066] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 187.341216][ T3066] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 187.343189][ T3066] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:03:08 building call list... [ 189.906842][ T49] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 190.159618][ T49] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 190.396537][ T49] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 190.669925][ T49] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 194.044034][ T49] device hsr_slave_0 left promiscuous mode [ 194.127588][ T49] device hsr_slave_1 left promiscuous mode [ 194.370718][ T49] device veth1_macvtap left promiscuous mode [ 194.372844][ T49] device veth0_macvtap left promiscuous mode [ 194.387192][ T49] device veth1_vlan left promiscuous mode [ 194.389495][ T49] device veth0_vlan left promiscuous mode executing program [ 197.859645][ T49] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 198.043565][ T49] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 198.856909][ T49] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 210.392469][ T3057] can: request_module (can-proto-0) failed. [ 210.699577][ T49] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 210.700758][ T49] leaked reference. [ 210.701882][ T49] ipv6_add_dev+0x300/0xeec [ 210.702997][ T49] addrconf_notify+0x3ac/0x1080 [ 210.703375][ T49] notifier_call_chain+0xc0/0x180 [ 210.703831][ T49] raw_notifier_call_chain+0x18/0x24 [ 210.704266][ T49] call_netdevice_notifiers_info+0x80/0xe0 [ 210.705939][ T49] register_netdevice+0xa7c/0x1094 [ 210.706877][ T49] register_netdev+0x24/0x4c [ 210.707390][ T49] loopback_net_init+0x6c/0x124 [ 210.707937][ T49] ops_init+0x8c/0x46c [ 210.708469][ T49] setup_net+0x638/0xbec [ 210.708859][ T49] copy_net_ns+0x1fc/0x560 [ 210.709230][ T49] create_new_namespaces+0x300/0x840 [ 210.709775][ T49] unshare_nsproxy_namespaces+0x7c/0x174 [ 210.710314][ T49] ksys_unshare+0x284/0x580 [ 210.710793][ T49] __arm64_sys_unshare+0x30/0x50 [ 210.711201][ T49] invoke_syscall+0x6c/0x260 [ 210.753683][ T3057] can: request_module (can-proto-0) failed. [ 210.987610][ T3057] can: request_module (can-proto-0) failed. executing program executing program executing program executing program [ 220.945926][ T49] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 220.946738][ T49] leaked reference. [ 220.947125][ T49] ipv6_add_dev+0x300/0xeec [ 220.947572][ T49] addrconf_notify+0x3ac/0x1080 [ 220.947976][ T49] notifier_call_chain+0xc0/0x180 [ 220.948408][ T49] raw_notifier_call_chain+0x18/0x24 [ 220.948889][ T49] call_netdevice_notifiers_info+0x80/0xe0 [ 220.949376][ T49] register_netdevice+0xa7c/0x1094 [ 220.949803][ T49] register_netdev+0x24/0x4c [ 220.950214][ T49] loopback_net_init+0x6c/0x124 [ 220.950664][ T49] ops_init+0x8c/0x46c [ 220.951070][ T49] setup_net+0x638/0xbec [ 220.951568][ T49] copy_net_ns+0x1fc/0x560 [ 220.951970][ T49] create_new_namespaces+0x300/0x840 [ 220.952631][ T49] unshare_nsproxy_namespaces+0x7c/0x174 [ 220.953061][ T49] ksys_unshare+0x284/0x580 [ 220.953475][ T49] __arm64_sys_unshare+0x30/0x50 [ 220.953916][ T49] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 231.206072][ T49] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 231.206938][ T49] leaked reference. [ 231.207305][ T49] ipv6_add_dev+0x300/0xeec [ 231.207769][ T49] addrconf_notify+0x3ac/0x1080 [ 231.208193][ T49] notifier_call_chain+0xc0/0x180 [ 231.208592][ T49] raw_notifier_call_chain+0x18/0x24 [ 231.208994][ T49] call_netdevice_notifiers_info+0x80/0xe0 [ 231.209402][ T49] register_netdevice+0xa7c/0x1094 [ 231.210459][ T49] register_netdev+0x24/0x4c [ 231.210872][ T49] loopback_net_init+0x6c/0x124 [ 231.211301][ T49] ops_init+0x8c/0x46c [ 231.211672][ T49] setup_net+0x638/0xbec [ 231.212071][ T49] copy_net_ns+0x1fc/0x560 [ 231.212443][ T49] create_new_namespaces+0x300/0x840 [ 231.212832][ T49] unshare_nsproxy_namespaces+0x7c/0x174 [ 231.213259][ T49] ksys_unshare+0x284/0x580 [ 231.213645][ T49] __arm64_sys_unshare+0x30/0x50 [ 231.214051][ T49] invoke_syscall+0x6c/0x260 executing program [ 232.419184][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 232.433358][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 232.441290][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 232.457581][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 22:53:03 Registers: info registers vcpu 0 PC=ffff8000097cceec X00=0000000000000002 X01=ffff000009eb0080 X02=0000000000000000 X03=0000000000000002 X04=dfff800000000000 X05=0000000000000000 X06=0000000000000001 X07=0000000000000004 X08=ffff8000113a7173 X09=dfff800000000000 X10=ffff700002274e2e X11=1ffff00002274e2e X12=ffff700002274e2f X13=0000000000000000 X14=1ffff00002274e04 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a93ac00 X19=0000000000000020 X20=ffff800010f3d000 X21=ffff80000e951240 X22=ffff000009eb0080 X23=dfff800000000000 X24=ffff800010c007d1 X25=0000000000000007 X26=ffff000009eb0080 X27=dfff800000000000 X28=0000000000000031 X29=ffff8000113a7120 X30=ffff8000097ccf00 SP=ffff8000113a7120 PSTATE=800000c5 N--- EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:3f827ea49605fd90 Q01=0000000000000000:3f847ae147ae147b Q02=0000000000000000:4197bd7f73a496ca Q03=0000000000000000:4130d32000000000 Q04=0000000000000000:3f844f520b712075 Q05=0000000000000000:3fd3333333333333 Q06=0000000000000000:3fd3333333333333 Q07=0000000000000000:3feaaaaaaaaaaaab Q08=0000000000000000:3fd6272a178126b6 Q09=0000000000000000:3fe2044fc848b592 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=0000000000000010:00000023aeaff2d0 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000082a8210 X00=ffff8000120f73e8 X01=0000000000000003 X02=dfff800000000000 X03=1fffe0000d52b333 X04=1ffff0000241eeb4 X05=00000000f2f2f200 X06=00000000f3f3f3f3 X07=1fffe00002260803 X08=ffff000011304018 X09=ffff80000f85c9c0 X10=ffff7000021c731a X11=1ffff000021c731a X12=ffff7000021c731b X13=0000000000000000 X14=1ffff0000241ee90 X15=0000000000000000 X16=ffff000014e2c460 X17=ffff000014e2c0e0 X18=0000000000000000 X19=0000000000000001 X20=ffff80000cb5c4b0 X21=ffff800008033ba0 X22=ffff8000120f75e0 X23=ffff000011303600 X24=0000000000000000 X25=0000000000000000 X26=0000000000000000 X27=ffff80000918ab70 X28=ffff000011303600 X29=ffff8000120f74c0 X30=ffff80000cb3b414 SP=ffff8000120f74c0 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