syzkaller login: [ 52.779111][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 54.221149][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 55.919275][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:65325' (ECDSA) to the list of known hosts. 1970/01/01 00:01:16 fuzzer started 1970/01/01 00:01:18 connecting to host at localhost:43289 1970/01/01 00:01:18 checking machine... 1970/01/01 00:01:18 checking revisions... 1970/01/01 00:01:19 testing simple program... [ 80.306007][ T3054] cgroup: Unknown subsys name 'net' [ 80.676532][ T3054] cgroup: Unknown subsys name 'rlimit' executing program [ 84.188355][ T3057] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 84.210219][ T3057] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 85.650042][ T3057] device hsr_slave_0 entered promiscuous mode [ 85.687555][ T3057] device hsr_slave_1 entered promiscuous mode [ 86.888980][ T3057] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 86.945730][ T3057] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 87.008994][ T3057] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 87.142511][ T3057] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 88.274624][ T3057] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.326956][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 88.331912][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 88.966411][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 88.971105][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 89.001963][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 89.009440][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 89.037684][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 89.063827][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 89.148442][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 89.153407][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 89.188325][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 89.193419][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 89.223638][ T3057] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 89.760286][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 89.761800][ T1713] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 91.198978][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 91.204087][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 91.914776][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 91.921810][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 91.933208][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 91.939855][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 91.964055][ T3057] device veth0_vlan entered promiscuous mode [ 92.013795][ T3057] device veth1_vlan entered promiscuous mode [ 92.134555][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 92.141006][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 92.146278][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 92.151186][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 92.173883][ T3057] device veth0_macvtap entered promiscuous mode [ 92.199368][ T3057] device veth1_macvtap entered promiscuous mode [ 92.207816][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 92.213359][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 92.290811][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 92.303324][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 92.343422][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 92.349709][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 92.380640][ T3057] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.381770][ T3057] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.382833][ T3057] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.383886][ T3057] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:32 building call list... [ 93.621750][ T38] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 93.819995][ T38] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 94.207628][ T38] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 94.626874][ T38] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.250880][ T38] device hsr_slave_0 left promiscuous mode [ 96.288914][ T38] device hsr_slave_1 left promiscuous mode [ 96.467288][ T38] device veth1_macvtap left promiscuous mode [ 96.469755][ T38] device veth0_macvtap left promiscuous mode [ 96.471237][ T38] device veth1_vlan left promiscuous mode [ 96.472740][ T38] device veth0_vlan left promiscuous mode executing program [ 97.733314][ T38] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 97.813618][ T38] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 98.114480][ T38] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 109.245525][ T38] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 109.246412][ T38] leaked reference. [ 109.247013][ T38] ipv6_add_dev+0x13c/0x580 [ 109.248191][ T38] addrconf_notify+0x1a0/0x710 [ 109.249007][ T38] raw_notifier_call_chain+0x54/0x74 [ 109.249623][ T38] call_netdevice_notifiers_info+0x54/0xa0 [ 109.250303][ T38] register_netdevice+0x3f0/0x564 [ 109.251024][ T38] register_netdev+0x24/0x4c [ 109.251692][ T38] loopback_net_init+0x4c/0xb0 [ 109.252351][ T38] ops_init+0x40/0x14c [ 109.252972][ T38] setup_net+0x190/0x3c0 [ 109.253561][ T38] copy_net_ns+0xec/0x360 [ 109.254275][ T38] create_new_namespaces+0x114/0x350 [ 109.255056][ T38] unshare_nsproxy_namespaces+0x64/0xb0 [ 109.255829][ T38] ksys_unshare+0x18c/0x320 [ 109.256454][ T38] __arm64_sys_unshare+0x14/0x24 [ 109.257162][ T38] invoke_syscall+0x48/0x114 [ 109.257982][ T38] el0_svc_common.constprop.0+0x44/0xec [ 109.521247][ T3051] can: request_module (can-proto-0) failed. [ 109.663352][ T3051] can: request_module (can-proto-0) failed. [ 109.778395][ T3051] can: request_module (can-proto-0) failed. executing program executing program executing program [ 118.013476][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.019854][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.023636][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.031187][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 119.285651][ T38] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 119.286944][ T38] leaked reference. [ 119.287661][ T38] ipv6_add_dev+0x13c/0x580 [ 119.288590][ T38] addrconf_notify+0x1a0/0x710 [ 119.289483][ T38] raw_notifier_call_chain+0x54/0x74 [ 119.290579][ T38] call_netdevice_notifiers_info+0x54/0xa0 [ 119.291759][ T38] register_netdevice+0x3f0/0x564 [ 119.292804][ T38] register_netdev+0x24/0x4c [ 119.293894][ T38] loopback_net_init+0x4c/0xb0 [ 119.294824][ T38] ops_init+0x40/0x14c [ 119.295827][ T38] setup_net+0x190/0x3c0 [ 119.296955][ T38] copy_net_ns+0xec/0x360 [ 119.298070][ T38] create_new_namespaces+0x114/0x350 [ 119.299234][ T38] unshare_nsproxy_namespaces+0x64/0xb0 [ 119.300261][ T38] ksys_unshare+0x18c/0x320 [ 119.301173][ T38] __arm64_sys_unshare+0x14/0x24 [ 119.302292][ T38] invoke_syscall+0x48/0x114 [ 119.303361][ T38] el0_svc_common.constprop.0+0x44/0xec [ 129.565336][ T38] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 129.566158][ T38] leaked reference. [ 129.566610][ T38] ipv6_add_dev+0x13c/0x580 [ 129.567227][ T38] addrconf_notify+0x1a0/0x710 [ 129.567879][ T38] raw_notifier_call_chain+0x54/0x74 [ 129.568596][ T38] call_netdevice_notifiers_info+0x54/0xa0 [ 129.569330][ T38] register_netdevice+0x3f0/0x564 [ 129.570010][ T38] register_netdev+0x24/0x4c [ 129.570662][ T38] loopback_net_init+0x4c/0xb0 [ 129.571329][ T38] ops_init+0x40/0x14c [ 129.571935][ T38] setup_net+0x190/0x3c0 [ 129.572568][ T38] copy_net_ns+0xec/0x360 [ 129.573166][ T38] create_new_namespaces+0x114/0x350 [ 129.573883][ T38] unshare_nsproxy_namespaces+0x64/0xb0 [ 129.574593][ T38] ksys_unshare+0x18c/0x320 [ 129.575288][ T38] __arm64_sys_unshare+0x14/0x24 [ 129.575950][ T38] invoke_syscall+0x48/0x114 [ 129.576608][ T38] el0_svc_common.constprop.0+0x44/0xec VM DIAGNOSIS: 10:01:54 Registers: info registers vcpu 0 PC=ffff80000873f1b0 X00=f3ff000002d18080 X01=0000000000000002 X02=ffff80000a7bd030 X03=0000000000000030 X04=0000000000000000 X05=ffff80000a61bcd7 X06=322e39303120205b X07=205b5d3139313834 X08=7f7f7f7f7f7f7f7f X09=ffff80000a9bb6a0 X10=000000000000005d X11=fffffffffffcc1b0 X12=5b5d313931383432 X13=205d383354202020 X14=0000000000000000 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffd X19=f3ff000002d18080 X20=ffff80000a61bcc0 X21=00000000000000c0 X22=0000000000000001 X23=0000000000000000 X24=0000000000000034 X25=ffff80000a61c0e0 X26=0000000000000000 X27=00000000000000c0 X28=0000000000000034 X29=ffff80000a9bb790 X30=0bdb8000087bc704 SP=ffff80000a9bb790 PSTATE=604000c9 -ZC- 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=0000000000000000:0000000000000000 Z01=3020302037312030:2030203020353736 Z02=3832353532353420:3020302030203020 Z03=0000000000000000:0000000000000000 Z04=0000000000000000:0000000000000000 Z05=0010000100000400:4000040040000000 Z06=0000000000000001:0010000100100001 Z07=8020080280200802:8020080280200802 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=4010040140100401:4010040140100401 Z17=0000000110011001:0001111111044440 Z18=0000000000000001:0010000100100001 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=ffff8000098a52f0 X00=ffff80000a673928 X01=0000000000000000 X02=0000000000000200 X03=f0ff00000394ae80 X04=ffff00007fb72b00 X05=ffff00007fab6100 X06=0000000000008000 X07=0000000000000001 X08=0000000000000000 X09=0000000000000000 X10=0000000000000000 X11=0000000000000000 X12=0000000000000000 X13=0000000000000000 X14=0000000000000000 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=fdff000003494000 X20=0000fffffa732f60 X21=fdff000003494020 X22=0000fffffa732f60 X23=0000000000000fe0 X24=0000000000000000 X25=0000000000000000 X26=0000000000000000 X27=0000000000000000 X28=f8ff000007b04d80 X29=ffff80000ab5bcb0 X30=ffff80000864fba0 SP=ffff80000ab5bcb0 PSTATE=404000c9 -Z-- 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=2f2f2f2f2f2f2f2f:2f2f2f2f2f2f2f2f Z01=6f73657262696c00:0000000000000008 Z02=7265645f4d54495f:00322e6f732e766c Z03=0000000000000002:8020080280200800 Z04=0000000000000000:8000000000000000 Z05=0000000000000000:0000000000000000 Z06=0000000000000000:0000000000000000 Z07=8020080280200802:8020080280200802 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=4010040140100401:4010040140100401 Z17=0000000080000000:000080000002aaa8 Z18=0000000000000000:8000000000000000 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