syzkaller login: [ 117.276506][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.284095][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.289323][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:48053' (ECDSA) to the list of known hosts. 1970/01/01 00:02:44 fuzzer started 1970/01/01 00:02:48 connecting to host at localhost:40061 1970/01/01 00:02:48 checking machine... 1970/01/01 00:02:48 checking revisions... 1970/01/01 00:02:50 testing simple program... [ 171.299539][ T3062] cgroup: Unknown subsys name 'net' [ 171.833641][ T3062] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program [ 178.349133][ T3065] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 178.386019][ T3065] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 181.615132][ T3065] device hsr_slave_0 entered promiscuous mode [ 181.692543][ T3065] device hsr_slave_1 entered promiscuous mode [ 182.289530][ C0] hrtimer: interrupt took 19124864 ns [ 183.759103][ T3065] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 183.845077][ T3065] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 183.962212][ T3065] netdevsim netdevsim0 netdevsim2: renamed from eth2 executing program [ 184.032938][ T3065] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 186.221787][ T3065] 8021q: adding VLAN 0 to HW filter on device bond0 [ 186.335686][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 186.355616][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 187.931271][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 187.949055][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 188.049527][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 188.063086][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 188.143205][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 188.184121][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 188.351299][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 188.376037][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 188.485632][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 188.504936][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 188.568808][ T3065] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 189.753461][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 189.756113][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 192.716447][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 192.736011][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 194.178568][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 194.185634][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 194.221360][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 194.231315][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 194.262293][ T3065] device veth0_vlan entered promiscuous mode [ 194.367741][ T3065] device veth1_vlan entered promiscuous mode [ 194.690545][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 194.709011][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 194.758528][ T3065] device veth0_macvtap entered promiscuous mode [ 194.826560][ T3065] device veth1_macvtap entered promiscuous mode [ 194.992812][ T3405] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 195.004360][ T3405] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 195.015337][ T3405] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 195.051955][ T3405] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 195.119313][ T3405] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 195.140375][ T3405] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 195.204527][ T3065] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 195.206167][ T3065] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 195.209362][ T3065] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 195.209855][ T3065] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:03:16 building call list... [ 197.837990][ T49] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 198.079750][ T49] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 198.321551][ T49] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 198.600633][ T49] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program executing program [ 202.105323][ T49] device hsr_slave_0 left promiscuous mode [ 202.173400][ T49] device hsr_slave_1 left promiscuous mode [ 202.415526][ T49] device veth1_macvtap left promiscuous mode [ 202.429793][ T49] device veth0_macvtap left promiscuous mode [ 202.450075][ T49] device veth1_vlan left promiscuous mode [ 202.452745][ T49] device veth0_vlan left promiscuous mode executing program [ 205.949284][ T49] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 206.111738][ T49] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 206.975435][ T49] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 218.620240][ T49] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 218.623900][ T49] leaked reference. [ 218.626273][ T49] ipv6_add_dev+0x300/0xeec [ 218.627172][ T49] addrconf_notify+0x3ac/0x1080 [ 218.627941][ T49] notifier_call_chain+0xc0/0x180 [ 218.628376][ T49] raw_notifier_call_chain+0x18/0x24 [ 218.628824][ T49] call_netdevice_notifiers_info+0x80/0xe0 [ 218.629442][ T49] register_netdevice+0xa7c/0x1094 [ 218.629964][ T49] register_netdev+0x24/0x4c [ 218.630578][ T49] loopback_net_init+0x6c/0x124 [ 218.631017][ T49] ops_init+0x8c/0x46c [ 218.631441][ T49] setup_net+0x638/0xbec [ 218.631876][ T49] copy_net_ns+0x1fc/0x560 [ 218.632303][ T49] create_new_namespaces+0x300/0x840 [ 218.632755][ T49] unshare_nsproxy_namespaces+0x7c/0x174 [ 218.633594][ T49] ksys_unshare+0x284/0x580 [ 218.634766][ T49] __arm64_sys_unshare+0x30/0x50 [ 218.635189][ T49] invoke_syscall+0x6c/0x260 executing program [ 221.626004][ T3053] can: request_module (can-proto-0) failed. [ 221.858855][ T3053] can: request_module (can-proto-0) failed. [ 222.110996][ T3053] can: request_module (can-proto-0) failed. executing program executing program [ 228.758507][ T49] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 228.759345][ T49] leaked reference. [ 228.759729][ T49] ipv6_add_dev+0x300/0xeec [ 228.760182][ T49] addrconf_notify+0x3ac/0x1080 [ 228.760565][ T49] notifier_call_chain+0xc0/0x180 [ 228.760971][ T49] raw_notifier_call_chain+0x18/0x24 [ 228.761371][ T49] call_netdevice_notifiers_info+0x80/0xe0 [ 228.761789][ T49] register_netdevice+0xa7c/0x1094 [ 228.762203][ T49] register_netdev+0x24/0x4c [ 228.762643][ T49] loopback_net_init+0x6c/0x124 [ 228.763059][ T49] ops_init+0x8c/0x46c [ 228.763429][ T49] setup_net+0x638/0xbec [ 228.763791][ T49] copy_net_ns+0x1fc/0x560 [ 228.764152][ T49] create_new_namespaces+0x300/0x840 [ 228.764482][ T49] unshare_nsproxy_namespaces+0x7c/0x174 [ 228.764810][ T49] ksys_unshare+0x284/0x580 [ 228.765298][ T49] __arm64_sys_unshare+0x30/0x50 [ 228.765624][ T49] invoke_syscall+0x6c/0x260 executing program executing program executing program executing program [ 238.943940][ T49] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 238.944656][ T49] leaked reference. [ 238.944945][ T49] ipv6_add_dev+0x300/0xeec [ 238.945304][ T49] addrconf_notify+0x3ac/0x1080 [ 238.945649][ T49] notifier_call_chain+0xc0/0x180 [ 238.945985][ T49] raw_notifier_call_chain+0x18/0x24 [ 238.946288][ T49] call_netdevice_notifiers_info+0x80/0xe0 [ 238.946867][ T49] register_netdevice+0xa7c/0x1094 [ 238.947351][ T49] register_netdev+0x24/0x4c [ 238.947741][ T49] loopback_net_init+0x6c/0x124 [ 238.948325][ T49] ops_init+0x8c/0x46c [ 238.948725][ T49] setup_net+0x638/0xbec [ 238.949150][ T49] copy_net_ns+0x1fc/0x560 [ 238.949538][ T49] create_new_namespaces+0x300/0x840 [ 238.949920][ T49] unshare_nsproxy_namespaces+0x7c/0x174 [ 238.950297][ T49] ksys_unshare+0x284/0x580 [ 238.950634][ T49] __arm64_sys_unshare+0x30/0x50 [ 238.950964][ T49] invoke_syscall+0x6c/0x260 [ 239.036451][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 239.044239][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 239.055952][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 239.062152][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 00:56:05 Registers: info registers vcpu 0 PC=ffff800008804c6c X00=00000ff700002394 X01=00000ff700002392 X02=1fffe00002178a21 X03=ffff00000965bca0 X04=0000000000002000 X05=ffff80000e52f538 X06=0000000000000001 X07=00008ffffe35a159 X08=ffff80000e52f538 X09=dfff800000000000 X10=ffff700001ca5ea7 X11=1ffff00001ca5ea7 X12=ffff700001ca5ea8 X13=1fffe00002178b72 X14=1ffff000023cadfa X15=ffff00006a93abc8 X16=1ffff00001c80e69 X17=ffff80005c773000 X18=ffff00006a93ac00 X19=1ffff00002392000 X20=ffff700002392000 X21=1ffff00002394000 X22=ffff700002394000 X23=ffff800011c99000 X24=ffff800010c55140 X25=00007bffb7f83000 X26=dfff800000000000 X27=ffff00000f339a20 X28=ffff000011194c70 X29=ffff800011e57380 X30=ffff800008804c44 SP=ffff800011e57380 PSTATE=80000005 N--- EL1h FPCR=00000000 FPSR=00000000 Q00=0000000000000000:ffffffffffffffff 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=ffff8000082b6c24 X00=ffff00000a4e5100 X01=0000000000000000 X02=0000000000000000 X03=1fffe0000d52ae01 X04=0000000000000000 X05=ffff8000113a7250 X06=0000000000000001 X07=0000000000000004 X08=ffff8000113a7253 X09=dfff800000000000 X10=ffff700002274e4a X11=1ffff00002274e4a X12=ffff700002274e4b X13=1ffff00002274d9e X14=1ffff00002274e20 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a959c00 X19=ffff80000e3115e0 X20=ffff8000082d27ac X21=ffff800010c00280 X22=1ffff00002274e6a X23=ffff80000e3115f0 X24=ffff80000e3115e8 X25=1ffff00001c622be X26=1ffff00001c622bd X27=ffff80005c792000 X28=00000000ffffffff X29=ffff8000113a71d0 X30=ffff8000082b6b84 SP=ffff8000113a71d0 PSTATE=600000c5 -ZC- EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:0000000000000004 Q01=0000000000000000:411f5d4000000000 Q02=f86d507b0e49e31c:3e8bf647d6fec7a8 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=0000000000000010:00000025b91a2130 Q31=0000000000000000:0000000000000000