syzkaller login: [ 93.406368][ T2896] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 93.456393][ T2896] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 93.506318][ T2896] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:27910' (ECDSA) to the list of known hosts. 1970/01/01 00:02:07 fuzzer started 1970/01/01 00:02:10 connecting to host at localhost:41265 1970/01/01 00:02:11 checking machine... 1970/01/01 00:02:11 checking revisions... 1970/01/01 00:02:13 testing simple program... [ 134.269649][ T3056] cgroup: Unknown subsys name 'net' executing program [ 134.774190][ T3056] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 141.388489][ T3060] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 141.441914][ T3060] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 144.398638][ T3060] device hsr_slave_0 entered promiscuous mode [ 144.458955][ T3060] device hsr_slave_1 entered promiscuous mode [ 146.301606][ T3060] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 146.386182][ T3060] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 146.514085][ T3060] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 146.641484][ T3060] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 148.743074][ T3060] 8021q: adding VLAN 0 to HW filter on device bond0 [ 148.853505][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 148.871203][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 150.264544][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 150.274018][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 150.333675][ T2828] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 150.350001][ T2828] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 150.415915][ T2828] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 150.513364][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 150.698095][ T3377] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 150.718410][ T3377] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 150.787137][ T3057] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 150.809007][ T3057] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 150.861320][ T3060] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 151.989725][ T3377] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 151.992971][ T3377] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 154.673354][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 154.683940][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 156.023476][ T3377] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 156.030702][ T3377] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 156.057237][ T3377] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 156.063336][ T3377] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 156.082157][ T3060] device veth0_vlan entered promiscuous mode [ 156.204568][ T3060] device veth1_vlan entered promiscuous mode [ 156.569725][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 156.584195][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 156.641892][ T3060] device veth0_macvtap entered promiscuous mode [ 156.719933][ T3060] device veth1_macvtap entered promiscuous mode [ 156.912351][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 156.924146][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 156.947990][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 156.960152][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 157.022157][ T2828] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 157.032460][ T2828] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 157.098021][ T3060] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 157.101756][ T3060] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 157.103711][ T3060] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 157.122950][ T3060] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:02:37 building call list... executing program [ 158.908051][ T913] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 159.119129][ T913] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 159.317496][ T913] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 159.507254][ T913] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 162.086434][ T913] device hsr_slave_0 left promiscuous mode [ 162.169265][ T913] device hsr_slave_1 left promiscuous mode [ 162.387636][ T913] device veth1_macvtap left promiscuous mode [ 162.389209][ T913] device veth0_macvtap left promiscuous mode [ 162.391107][ T913] device veth1_vlan left promiscuous mode [ 162.392723][ T913] device veth0_vlan left promiscuous mode [ 164.697856][ T913] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface executing program [ 164.804286][ T913] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 165.388654][ T913] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 176.895375][ T913] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 176.897079][ T913] leaked reference. [ 176.898063][ T913] ipv6_add_dev+0x13c/0x580 [ 176.900348][ T913] addrconf_notify+0x1a0/0x710 [ 176.901302][ T913] raw_notifier_call_chain+0x54/0x74 [ 176.902326][ T913] call_netdevice_notifiers_info+0x54/0xa0 [ 176.903603][ T913] register_netdevice+0x3f0/0x564 [ 176.904861][ T913] register_netdev+0x24/0x4c [ 176.905982][ T913] loopback_net_init+0x4c/0xb0 [ 176.907125][ T913] ops_init+0x40/0x14c [ 176.908126][ T913] setup_net+0x190/0x3c0 [ 176.909159][ T913] copy_net_ns+0xec/0x360 [ 176.910214][ T913] create_new_namespaces+0x114/0x350 [ 176.911401][ T913] unshare_nsproxy_namespaces+0x64/0xb0 [ 176.912575][ T913] ksys_unshare+0x18c/0x320 [ 176.914540][ T913] __arm64_sys_unshare+0x14/0x24 [ 176.916304][ T913] invoke_syscall+0x48/0x114 [ 176.917677][ T913] el0_svc_common.constprop.0+0x44/0xec executing program executing program executing program [ 187.185564][ T3054] can: request_module (can-proto-0) failed. [ 187.185948][ T913] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 187.189936][ T913] leaked reference. [ 187.194271][ T913] ipv6_add_dev+0x13c/0x580 [ 187.199395][ T913] addrconf_notify+0x1a0/0x710 [ 187.200554][ T913] raw_notifier_call_chain+0x54/0x74 [ 187.202197][ T913] call_netdevice_notifiers_info+0x54/0xa0 [ 187.203580][ T913] register_netdevice+0x3f0/0x564 [ 187.205184][ T913] register_netdev+0x24/0x4c [ 187.206381][ T913] loopback_net_init+0x4c/0xb0 [ 187.207675][ T913] ops_init+0x40/0x14c [ 187.208604][ T913] setup_net+0x190/0x3c0 [ 187.209583][ T913] copy_net_ns+0xec/0x360 [ 187.210666][ T913] create_new_namespaces+0x114/0x350 [ 187.212138][ T913] unshare_nsproxy_namespaces+0x64/0xb0 [ 187.213203][ T913] ksys_unshare+0x18c/0x320 [ 187.214183][ T913] __arm64_sys_unshare+0x14/0x24 [ 187.215428][ T913] invoke_syscall+0x48/0x114 [ 187.216694][ T913] el0_svc_common.constprop.0+0x44/0xec [ 187.476951][ T3054] can: request_module (can-proto-0) failed. [ 187.717663][ T3054] can: request_module (can-proto-0) failed. executing program executing program [ 193.757599][ T2896] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 193.763741][ T2896] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 193.776568][ T2896] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 193.783423][ T2896] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program [ 197.386967][ T913] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 197.388709][ T913] leaked reference. [ 197.389775][ T913] ipv6_add_dev+0x13c/0x580 [ 197.390919][ T913] addrconf_notify+0x1a0/0x710 [ 197.392136][ T913] raw_notifier_call_chain+0x54/0x74 [ 197.393405][ T913] call_netdevice_notifiers_info+0x54/0xa0 [ 197.394867][ T913] register_netdevice+0x3f0/0x564 [ 197.396774][ T913] register_netdev+0x24/0x4c [ 197.398431][ T913] loopback_net_init+0x4c/0xb0 [ 197.400179][ T913] ops_init+0x40/0x14c [ 197.401736][ T913] setup_net+0x190/0x3c0 [ 197.403305][ T913] copy_net_ns+0xec/0x360 [ 197.405088][ T913] create_new_namespaces+0x114/0x350 [ 197.407155][ T913] unshare_nsproxy_namespaces+0x64/0xb0 [ 197.409115][ T913] ksys_unshare+0x18c/0x320 [ 197.410778][ T913] __arm64_sys_unshare+0x14/0x24 [ 197.412550][ T913] invoke_syscall+0x48/0x114 [ 197.414213][ T913] el0_svc_common.constprop.0+0x44/0xec executing program executing program VM DIAGNOSIS: 19:23:24 Registers: info registers vcpu 0 PC=ffff8000091b5f48 X00=ffff8000091b5f40 X01=f7ff000009435d00 X02=0000000000000001 X03=0000000000000000 X04=0000000000000002 X05=000000000000ba04 X06=0000000002b5cf14 X07=ffff00007fbc1100 X08=ffff00007fbc1180 X09=000000000000033a X10=000000000000b9ff X11=0000000000000003 X12=0000000000000000 X13=0000000000000386 X14=0000000000000386 X15=0000ad70e7c83d3c X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=ffff80000a4d1108 X20=ffff80000a4d1100 X21=0000000000000000 X22=0000000000000004 X23=ffff80000a4d1108 X24=0000000000000028 X25=0000000000000000 X26=f0ff000002ca5d00 X27=f7ff000009435d00 X28=0000000000000000 X29=ffff80000a83bbf0 X30=3f94800008151aa0 SP=ffff80000a83bbf0 PSTATE=804000c9 N--- EL2h BTYPE=0 FPCR=00000000 FPSR=00000000 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=2525252525252525:2525252525252525 Z01=25207334362e2520:732500676f6c2f76 Z02=6f736e6f632f7665:642f000a73252073 Z03=0000000000000000:0000ff0000000000 Z04=0000000000000000:0000ff0000000000 Z05=4000000000000400:0010040000000000 Z06=0000000000000000:0000040000100000 Z07=4010040140100401:4010040140100401 Z08=0000000000000000:0000000000000000 Z09=0000000000000000:0000000000000000 Z10=0000000000000000:0000000000000000 Z11=0000000000000000:0000000000000000 Z12=0000000000000000:0000000000000000 Z13=0000000000000000:0000000000000000 Z14=0000000000000000:0000000000000000 Z15=0000000000000000:0000000000000000 Z16=0000041040041400:0000041040041400 Z17=a00a8000a00a800a:aa80aa8a00000010 Z18=8020080280000000:8020080280000802 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000000:0000000000000000 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000091b5f48 X00=ffff8000091b5f40 X01=0000000000000001 X02=ffff80000a1a7000 X03=ffff800009fcaa18 X04=ffff80000b7d39f0 X05=fbff00000381be00 X06=ffff80000b7d3af0 X07=00000000ffffffc8 X08=ffff80000b7d3b30 X09=ffff80000b7d3b30 X10=ffff80000a49eb08 X11=fffffffffffcc130 X12=00000000000002fe X13=00000000000008fa X14=ffff80000a3eeb08 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffc X19=ffff80000a4d1108 X20=ffff80000a4d1100 X21=0000000000000000 X22=0000000000000004 X23=ffff80000a4d1108 X24=0000000000000028 X25=0000000000000064 X26=00000000ffffcbab X27=00000000000000fa X28=00000000ffffcf92 X29=ffff80000b7d3840 X30=8eb4800008151aa0 SP=ffff80000b7d3840 PSTATE=804000c9 N--- EL2h BTYPE=0 FPCR=00000000 FPSR=00000010 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=0000000000000000:0000000000000000 Z01=0000000000000000:00000000447a0000 Z02=732500657361656c:207325206120676e Z03=0000000000000000:00000000ff000000 Z04=0000ff0000000000:0000000000000000 Z05=0000000000000000:0000000140000001 Z06=0010040000000000:0000040000000000 Z07=4010040140100401:4010040140100401 Z08=0000000000000000:0000000000000c33 Z09=0000000000000000:0000000000000000 Z10=0000000000000000:0000000000000000 Z11=0000000000000000:0000000000000000 Z12=0000000000000000:0000000000000000 Z13=0000000000000000:0000000000000000 Z14=0000000000000000:0000000000000000 Z15=0000000000000000:0000000000000000 Z16=1400040000000141:1400040000000141 Z17=a00a0002a00a0000:aa02aa00aa82a000 Z18=8020080200000002:8020080200000000 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000000:0000000000000000 Z31=0000000000000000:0000000000000000