syzkaller login: [ 118.830273][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.857139][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.872187][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.880877][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:43832' (ECDSA) to the list of known hosts. 1970/01/01 00:02:33 fuzzer started 1970/01/01 00:02:37 connecting to host at localhost:36505 1970/01/01 00:02:37 checking machine... 1970/01/01 00:02:37 checking revisions... 1970/01/01 00:02:40 testing simple program... [ 160.772739][ T3070] cgroup: Unknown subsys name 'net' executing program [ 161.416126][ T3070] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 168.479561][ T3072] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 168.517965][ T3072] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 171.332763][ T3072] device hsr_slave_0 entered promiscuous mode [ 171.391263][ T3072] device hsr_slave_1 entered promiscuous mode executing program [ 173.407640][ T3072] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 173.512319][ T3072] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 173.603273][ T3072] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 173.716025][ T3072] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 175.732175][ T3072] 8021q: adding VLAN 0 to HW filter on device bond0 [ 175.810157][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 175.822886][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 177.292293][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 177.300028][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 177.381372][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 177.394301][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 177.446055][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 177.512570][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 177.686274][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 177.700917][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 177.751795][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 177.763274][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 177.836056][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 179.147689][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 179.149680][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 182.001925][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 182.021849][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 183.791825][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 183.830112][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 183.861563][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 183.888448][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 183.913113][ T3072] device veth0_vlan entered promiscuous mode [ 184.050086][ T3072] device veth1_vlan entered promiscuous mode [ 184.346269][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 184.367938][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 184.429055][ T3072] device veth0_macvtap entered promiscuous mode [ 184.487857][ T3072] device veth1_macvtap entered promiscuous mode [ 184.679628][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 184.701606][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 184.716570][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 184.733356][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 184.826770][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 184.832561][ T3237] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 184.902941][ T3072] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 184.916308][ T3072] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 184.916960][ T3072] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 184.917492][ T3072] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:03:06 building call list... [ 187.720534][ T1016] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 188.062757][ T1016] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 188.298053][ T1016] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 188.566884][ T1016] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 192.279771][ T1016] device hsr_slave_0 left promiscuous mode [ 192.347248][ T1016] device hsr_slave_1 left promiscuous mode [ 192.654327][ T1016] device veth1_macvtap left promiscuous mode [ 192.658862][ T1016] device veth0_macvtap left promiscuous mode [ 192.686300][ T1016] device veth1_vlan left promiscuous mode [ 192.691038][ T1016] device veth0_vlan left promiscuous mode executing program [ 196.331590][ T1016] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 196.498116][ T1016] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface executing program [ 197.325914][ T1016] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 209.186110][ T1016] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 209.187563][ T1016] leaked reference. [ 209.188759][ T1016] ipv6_add_dev+0x300/0xeec [ 209.193553][ T1016] addrconf_notify+0x3ac/0x1080 [ 209.194150][ T1016] notifier_call_chain+0xc0/0x180 [ 209.194621][ T1016] raw_notifier_call_chain+0x18/0x24 [ 209.195054][ T1016] call_netdevice_notifiers_info+0x80/0xe0 [ 209.195588][ T1016] register_netdevice+0xa7c/0x1094 [ 209.196128][ T1016] register_netdev+0x24/0x4c [ 209.196543][ T1016] loopback_net_init+0x6c/0x124 [ 209.197864][ T1016] ops_init+0x8c/0x46c [ 209.198960][ T1016] setup_net+0x638/0xbec [ 209.199500][ T1016] copy_net_ns+0x1fc/0x560 [ 209.200707][ T1016] create_new_namespaces+0x300/0x840 [ 209.201319][ T1016] unshare_nsproxy_namespaces+0x7c/0x174 [ 209.202913][ T1016] ksys_unshare+0x284/0x580 [ 209.204617][ T1016] __arm64_sys_unshare+0x30/0x50 [ 209.206570][ T1016] invoke_syscall+0x6c/0x260 [ 210.069183][ T3064] can: request_module (can-proto-0) failed. [ 210.375106][ T3064] can: request_module (can-proto-0) failed. [ 210.632147][ T3064] can: request_module (can-proto-0) failed. executing program executing program executing program [ 219.367870][ T1016] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 219.368707][ T1016] leaked reference. [ 219.369082][ T1016] ipv6_add_dev+0x300/0xeec [ 219.369541][ T1016] addrconf_notify+0x3ac/0x1080 [ 219.370066][ T1016] notifier_call_chain+0xc0/0x180 [ 219.370516][ T1016] raw_notifier_call_chain+0x18/0x24 [ 219.370957][ T1016] call_netdevice_notifiers_info+0x80/0xe0 [ 219.371402][ T1016] register_netdevice+0xa7c/0x1094 [ 219.371829][ T1016] register_netdev+0x24/0x4c [ 219.372257][ T1016] loopback_net_init+0x6c/0x124 [ 219.372671][ T1016] ops_init+0x8c/0x46c [ 219.373058][ T1016] setup_net+0x638/0xbec [ 219.378445][ T1016] copy_net_ns+0x1fc/0x560 [ 219.379017][ T1016] create_new_namespaces+0x300/0x840 [ 219.379462][ T1016] unshare_nsproxy_namespaces+0x7c/0x174 [ 219.379889][ T1016] ksys_unshare+0x284/0x580 [ 219.380304][ T1016] __arm64_sys_unshare+0x30/0x50 [ 219.380720][ T1016] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 229.396294][ T1016] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 229.397123][ T1016] leaked reference. [ 229.397497][ T1016] ipv6_add_dev+0x300/0xeec [ 229.397958][ T1016] addrconf_notify+0x3ac/0x1080 [ 229.398350][ T1016] notifier_call_chain+0xc0/0x180 [ 229.398788][ T1016] raw_notifier_call_chain+0x18/0x24 [ 229.399201][ T1016] call_netdevice_notifiers_info+0x80/0xe0 [ 229.399642][ T1016] register_netdevice+0xa7c/0x1094 [ 229.400173][ T1016] register_netdev+0x24/0x4c [ 229.400584][ T1016] loopback_net_init+0x6c/0x124 [ 229.401017][ T1016] ops_init+0x8c/0x46c [ 229.401431][ T1016] setup_net+0x638/0xbec [ 229.401823][ T1016] copy_net_ns+0x1fc/0x560 [ 229.402222][ T1016] create_new_namespaces+0x300/0x840 [ 229.402655][ T1016] unshare_nsproxy_namespaces+0x7c/0x174 [ 229.403113][ T1016] ksys_unshare+0x284/0x580 [ 229.403699][ T1016] __arm64_sys_unshare+0x30/0x50 [ 229.404196][ T1016] invoke_syscall+0x6c/0x260 executing program [ 231.770617][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 231.790256][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 231.809380][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 231.819717][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 02:31:29 Registers: info registers vcpu 0 PC=ffff800009186644 X00=ffff00006a93ac88 X01=0000000100000002 X02=0000000000000000 X03=1fffe0000143c361 X04=00000000f204f1f1 X05=ffff7000023bcf14 X06=dfff800000000000 X07=00000000f1f1f1f1 X08=ffff00000a1e2590 X09=00000000000000a0 X10=ffff7f8000031b88 X11=1fffff8000031b88 X12=ffff7f8000031b89 X13=0000000000000000 X14=1ffff000023bcef2 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=0000000000000000 X20=ffff00000a1e1b00 X21=ffff80000ce80380 X22=ffff000013d51340 X23=0000000000000001 X24=0000000000000000 X25=1fffe000029e54e2 X26=0000000000000002 X27=ffff000014f2a710 X28=ffff80000e21f000 X29=ffff800011de7930 X30=ffff80000cb3b150 SP=ffff800011de78b0 PSTATE=10000005 ---V EL1h FPCR=00000000 FPSR=00000000 Q00=0000000000000000:0000000000000000 Q01=2e6f732e6362696c:0036317465675f73 Q02=6f6972705f746567:5f64656863730036 Q03=0000000000000000:8000000000000000 Q04=0000000000000000:0000000000000800 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=0000000000000008:0000000800008000 Q18=0000000000000000:0000000000000800 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=ffff80000cb3a070 X00=0000000000000000 X01=0000000000000000 X02=1ffff00001eeab3e X03=1fffe000024cf001 X04=00000000f204f1f1 X05=ffff70000263ee6c X06=dfff800000000000 X07=00000000f1f1f1f1 X08=ffff8000131f7167 X09=dfff800000000000 X10=ffff70000263ee2c X11=1ffff0000263ee2c X12=ffff70000263ee2d X13=1fffe000024cf157 X14=1ffff0000263ee4a X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=0000000000000001 X20=1ffff0000263ee6c X21=ffff000012678000 X22=0000000000000000 X23=ffff80000e311448 X24=ffff80000e21c000 X25=ffff8000131f7520 X26=ffff80005c792000 X27=ffff80000ec3b340 X28=0000000000000000 X29=ffff8000131f72d0 X30=ffff8000083083ec SP=ffff8000131f72d0 PSTATE=100000c5 ---V EL1h FPCR=00000000 FPSR=00000000 Q00=0000000000000000:0000000000000000 Q01=66702d74656e002d:2d00712d0065626f Q02=3d4d524554002f3d:454d4f480031332d Q03=0020008000082080:0020008000082080 Q04=0000000000200000:0000000080000000 Q05=0004000000000000:0004000000000000 Q06=0000000000000400:0000000000000000 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=00ff00ff00ffffff:00ff00ff00ffffff Q18=0000000080000000:0000000000000800 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