syzkaller login: [ 117.198344][ T2901] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.224724][ T2901] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.235708][ T2901] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:10618' (ECDSA) to the list of known hosts. 1970/01/01 00:02:25 fuzzer started 1970/01/01 00:02:30 connecting to host at localhost:41813 1970/01/01 00:02:31 checking machine... 1970/01/01 00:02:31 checking revisions... 1970/01/01 00:02:33 testing simple program... [ 154.454296][ T3061] cgroup: Unknown subsys name 'net' executing program [ 154.974923][ T3061] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 162.596186][ T3064] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 162.645598][ T3064] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 166.370928][ T3064] device hsr_slave_0 entered promiscuous mode [ 166.450468][ T3064] device hsr_slave_1 entered promiscuous mode executing program [ 168.504700][ T3064] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 168.609384][ T3064] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 168.695953][ T3064] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 168.774409][ T3064] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 171.060970][ T3064] 8021q: adding VLAN 0 to HW filter on device bond0 [ 171.234792][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 171.252441][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 172.598460][ T3149] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 172.605767][ T3149] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 172.682347][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 172.704679][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 172.780713][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 172.859403][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 173.084245][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 173.099940][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 173.163578][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 173.176028][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 173.244737][ T3064] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 174.491201][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 174.511056][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 177.569288][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 177.589058][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 179.153827][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 179.178875][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 179.210128][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 179.219949][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 179.264690][ T3064] device veth0_vlan entered promiscuous mode [ 179.430160][ T3064] device veth1_vlan entered promiscuous mode [ 179.699298][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 179.711057][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 179.753744][ T3064] device veth0_macvtap entered promiscuous mode [ 179.815618][ T3064] device veth1_macvtap entered promiscuous mode [ 179.984305][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 179.993002][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 180.007135][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 180.018267][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 180.092509][ T3062] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 180.104640][ T3062] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 180.208623][ T3064] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 180.210359][ T3064] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 180.211014][ T3064] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 180.211620][ T3064] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:03:01 building call list... [ 182.743466][ T1400] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 183.082023][ T1400] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 183.303091][ T1400] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 183.633885][ T1400] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 187.346250][ T1400] device hsr_slave_0 left promiscuous mode [ 187.405585][ T1400] device hsr_slave_1 left promiscuous mode executing program [ 187.795289][ T1400] device veth1_macvtap left promiscuous mode [ 187.803641][ T1400] device veth0_macvtap left promiscuous mode [ 187.831137][ T1400] device veth1_vlan left promiscuous mode [ 187.833941][ T1400] device veth0_vlan left promiscuous mode executing program [ 191.539078][ T1400] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 191.658725][ T1400] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 192.319956][ T1400] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 204.468537][ T1400] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 204.470152][ T1400] leaked reference. [ 204.471411][ T1400] ipv6_add_dev+0x300/0xeec [ 204.472927][ T1400] addrconf_notify+0x3ac/0x1080 [ 204.473517][ T1400] notifier_call_chain+0xc0/0x180 [ 204.474112][ T1400] raw_notifier_call_chain+0x18/0x24 [ 204.474799][ T1400] call_netdevice_notifiers_info+0x80/0xe0 [ 204.475278][ T1400] register_netdevice+0xa7c/0x1094 [ 204.475881][ T1400] register_netdev+0x24/0x4c [ 204.476421][ T1400] loopback_net_init+0x6c/0x124 [ 204.476982][ T1400] ops_init+0x8c/0x46c [ 204.477557][ T1400] setup_net+0x638/0xbec [ 204.478199][ T1400] copy_net_ns+0x1fc/0x560 [ 204.478830][ T1400] create_new_namespaces+0x300/0x840 [ 204.479571][ T1400] unshare_nsproxy_namespaces+0x7c/0x174 [ 204.480093][ T1400] ksys_unshare+0x284/0x580 [ 204.480697][ T1400] __arm64_sys_unshare+0x30/0x50 [ 204.481461][ T1400] invoke_syscall+0x6c/0x260 executing program executing program [ 208.610350][ T3056] can: request_module (can-proto-0) failed. [ 208.869991][ T3056] can: request_module (can-proto-0) failed. [ 209.150983][ T3056] can: request_module (can-proto-0) failed. executing program executing program [ 214.608060][ T1400] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 214.608709][ T1400] leaked reference. [ 214.609042][ T1400] ipv6_add_dev+0x300/0xeec [ 214.609413][ T1400] addrconf_notify+0x3ac/0x1080 [ 214.609772][ T1400] notifier_call_chain+0xc0/0x180 [ 214.610118][ T1400] raw_notifier_call_chain+0x18/0x24 [ 214.610480][ T1400] call_netdevice_notifiers_info+0x80/0xe0 [ 214.610861][ T1400] register_netdevice+0xa7c/0x1094 [ 214.611215][ T1400] register_netdev+0x24/0x4c [ 214.611537][ T1400] loopback_net_init+0x6c/0x124 [ 214.611889][ T1400] ops_init+0x8c/0x46c [ 214.612240][ T1400] setup_net+0x638/0xbec [ 214.612642][ T1400] copy_net_ns+0x1fc/0x560 [ 214.613012][ T1400] create_new_namespaces+0x300/0x840 [ 214.613369][ T1400] unshare_nsproxy_namespaces+0x7c/0x174 [ 214.613725][ T1400] ksys_unshare+0x284/0x580 [ 214.614081][ T1400] __arm64_sys_unshare+0x30/0x50 [ 214.614436][ T1400] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 224.708259][ T1400] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 224.709005][ T1400] leaked reference. [ 224.709270][ T1400] ipv6_add_dev+0x300/0xeec [ 224.709690][ T1400] addrconf_notify+0x3ac/0x1080 [ 224.710126][ T1400] notifier_call_chain+0xc0/0x180 [ 224.710563][ T1400] raw_notifier_call_chain+0x18/0x24 [ 224.711017][ T1400] call_netdevice_notifiers_info+0x80/0xe0 [ 224.711320][ T1400] register_netdevice+0xa7c/0x1094 [ 224.711654][ T1400] register_netdev+0x24/0x4c [ 224.712053][ T1400] loopback_net_init+0x6c/0x124 [ 224.712489][ T1400] ops_init+0x8c/0x46c [ 224.712932][ T1400] setup_net+0x638/0xbec [ 224.713339][ T1400] copy_net_ns+0x1fc/0x560 [ 224.713629][ T1400] create_new_namespaces+0x300/0x840 [ 224.713970][ T1400] unshare_nsproxy_namespaces+0x7c/0x174 [ 224.714411][ T1400] ksys_unshare+0x284/0x580 [ 224.714825][ T1400] __arm64_sys_unshare+0x30/0x50 [ 224.715286][ T1400] invoke_syscall+0x6c/0x260 [ 225.071063][ T2901] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 225.090578][ T2901] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 225.121878][ T2901] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 225.138820][ T2901] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program executing program VM DIAGNOSIS: 19:10:24 Registers: info registers vcpu 0 PC=ffff80000b5fb2d8 X00=ffff80000b5fb2d0 X01=ffff80000b5fb310 X02=0000000000000000 X03=1fffe0000d527591 X04=00000000f204f1f1 X05=ffff7000022a0f24 X06=dfff800000000000 X07=00000000f1f1f1f1 X08=ffff00001369a518 X09=0000000000000028 X10=ffff00001369a4b4 X11=0000000000000007 X12=1fffe000026d3496 X13=1fffe000026d34a3 X14=1ffff000022a0f02 X15=000000400005def8 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=ffff80000e4286c0 X20=0000000000009e22 X21=0000000000009e22 X22=dfff800000000000 X23=0000002f7f58f800 X24=0000000000000001 X25=ffff80000e428b40 X26=0000000000004e20 X27=0000000000004e20 X28=0000000000004e20 X29=ffff8000115079c0 X30=ffff80000b5fb328 SP=ffff8000115079c0 PSTATE=600000c5 -ZC- EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:0000000000000004 Q01=0000000000000000:414fffffe0000000 Q02=5274c12275137952:871c92cb3d889998 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=0000000000000010:0000002157d468d0 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff800008362bd0 X00=0000000000000019 X01=ffff000013ba8000 X02=0000000000000000 X03=0000000000000000 X04=1fffe00002775001 X05=ffff00006a959cd0 X06=0000000000000001 X07=00009ffff2ad4c66 X08=ffff00006a959cd3 X09=dfff800000000000 X10=ffff60000d52b39a X11=1fffe0000d52b39a X12=ffff60000d52b39b X13=0000000000000000 X14=1ffff00003032e52 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a959c00 X19=0000000000000000 X20=ffff80000ce803c0 X21=00000000000000c0 X22=0000000000000000 X23=ffff80000e435b40 X24=dfff800000000000 X25=ffff80000e435a80 X26=0000000000000004 X27=ffff80000e435ab0 X28=ffff000013932570 X29=ffff800018197300 X30=ffff8000083a3458 SP=ffff800018197300 PSTATE=600000c5 -ZC- EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:0000000000000000 Q01=0000000000000000:00000000447a0000 Q02=732500657361656c:207325206120676e Q03=0000000000000000:00000000ff000000 Q04=0000ff0000000000:0000000000000000 Q05=0000000000000000:0000000140000001 Q06=0010040000000000:0000040000000000 Q07=4010040140100401:4010040140100401 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=1400040000000141:1400040000000141 Q17=a00a8000a0000000:aa80a000a000a200 Q18=8020080280000000:8020000000000000 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