syzkaller login: [ 52.291424][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 54.962003][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 54.965647][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:42857' (ECDSA) to the list of known hosts. 1970/01/01 00:01:19 fuzzer started 1970/01/01 00:01:21 connecting to host at localhost:46811 1970/01/01 00:01:21 checking machine... 1970/01/01 00:01:21 checking revisions... 1970/01/01 00:01:22 testing simple program... [ 82.935733][ T3055] cgroup: Unknown subsys name 'net' [ 83.287325][ T3055] cgroup: Unknown subsys name 'rlimit' executing program [ 86.721218][ T3058] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 86.743625][ T3058] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 88.200340][ T3058] device hsr_slave_0 entered promiscuous mode [ 88.239538][ T3058] device hsr_slave_1 entered promiscuous mode [ 89.197518][ T3058] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 89.258747][ T3058] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 89.316071][ T3058] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 89.396012][ T3058] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 90.542864][ T3058] 8021q: adding VLAN 0 to HW filter on device bond0 executing program [ 90.604539][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 90.612723][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 91.282254][ T2827] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 91.290609][ T2827] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 91.318796][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 91.324002][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 91.358249][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 91.387975][ T2827] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 91.463820][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 91.469654][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 91.503361][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 91.510578][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 91.534858][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 92.092408][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 92.094407][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 93.529504][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 93.534601][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 94.248147][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 94.253743][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 94.266659][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 94.272887][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 94.288218][ T3058] device veth0_vlan entered promiscuous mode [ 94.335319][ T3058] device veth1_vlan entered promiscuous mode [ 94.455022][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 94.460689][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 94.465532][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 94.476317][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 94.501023][ T3058] device veth0_macvtap entered promiscuous mode [ 94.530097][ T3058] device veth1_macvtap entered promiscuous mode [ 94.540696][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 94.548643][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 94.633567][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 94.642241][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 94.675913][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 94.681417][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 94.708674][ T3058] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.710022][ T3058] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.711207][ T3058] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 94.712298][ T3058] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:35 building call list... [ 95.892047][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.016588][ T11] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.225004][ T11] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.498447][ T11] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 98.217454][ T11] device hsr_slave_0 left promiscuous mode [ 98.269135][ T11] device hsr_slave_1 left promiscuous mode [ 98.448757][ T11] device veth1_macvtap left promiscuous mode [ 98.449712][ T11] device veth0_macvtap left promiscuous mode [ 98.450962][ T11] device veth1_vlan left promiscuous mode [ 98.452044][ T11] device veth0_vlan left promiscuous mode executing program [ 99.671833][ T11] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 99.770635][ T11] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 100.095096][ T11] bond0 (unregistering): Released all slaves executing program executing program executing program [ 111.257579][ T11] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 111.258650][ T11] leaked reference. [ 111.259374][ T11] ipv6_add_dev+0x13c/0x580 [ 111.261104][ T11] addrconf_notify+0x1a0/0x710 [ 111.262266][ T11] raw_notifier_call_chain+0x54/0x74 [ 111.263541][ T11] call_netdevice_notifiers_info+0x54/0xa0 [ 111.264865][ T11] register_netdevice+0x3f0/0x564 [ 111.266103][ T11] register_netdev+0x24/0x4c [ 111.267526][ T11] loopback_net_init+0x4c/0xb0 [ 111.268652][ T11] ops_init+0x40/0x14c [ 111.269703][ T11] setup_net+0x190/0x3c0 [ 111.270721][ T11] copy_net_ns+0xec/0x360 [ 111.271789][ T11] create_new_namespaces+0x114/0x350 [ 111.272986][ T11] unshare_nsproxy_namespaces+0x64/0xb0 [ 111.274199][ T11] ksys_unshare+0x18c/0x320 [ 111.275269][ T11] __arm64_sys_unshare+0x14/0x24 [ 111.276396][ T11] invoke_syscall+0x48/0x114 [ 111.277758][ T11] el0_svc_common.constprop.0+0x44/0xec executing program [ 111.649533][ T3049] can: request_module (can-proto-0) failed. [ 111.808321][ T3049] can: request_module (can-proto-0) failed. [ 111.911353][ T3049] can: request_module (can-proto-0) failed. executing program executing program [ 119.748603][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 119.752490][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 119.756406][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 119.765762][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 121.337534][ T11] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 121.338603][ T11] leaked reference. [ 121.339123][ T11] ipv6_add_dev+0x13c/0x580 [ 121.339774][ T11] addrconf_notify+0x1a0/0x710 [ 121.340403][ T11] raw_notifier_call_chain+0x54/0x74 [ 121.341158][ T11] call_netdevice_notifiers_info+0x54/0xa0 [ 121.341925][ T11] register_netdevice+0x3f0/0x564 [ 121.342560][ T11] register_netdev+0x24/0x4c [ 121.343197][ T11] loopback_net_init+0x4c/0xb0 [ 121.343790][ T11] ops_init+0x40/0x14c [ 121.344384][ T11] setup_net+0x190/0x3c0 [ 121.344958][ T11] copy_net_ns+0xec/0x360 [ 121.345571][ T11] create_new_namespaces+0x114/0x350 [ 121.346273][ T11] unshare_nsproxy_namespaces+0x64/0xb0 [ 121.347193][ T11] ksys_unshare+0x18c/0x320 [ 121.347828][ T11] __arm64_sys_unshare+0x14/0x24 [ 121.348474][ T11] invoke_syscall+0x48/0x114 [ 121.349123][ T11] el0_svc_common.constprop.0+0x44/0xec [ 131.617215][ T11] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 131.618132][ T11] leaked reference. [ 131.618590][ T11] ipv6_add_dev+0x13c/0x580 [ 131.619227][ T11] addrconf_notify+0x1a0/0x710 [ 131.619886][ T11] raw_notifier_call_chain+0x54/0x74 [ 131.620615][ T11] call_netdevice_notifiers_info+0x54/0xa0 [ 131.621369][ T11] register_netdevice+0x3f0/0x564 [ 131.622154][ T11] register_netdev+0x24/0x4c [ 131.622808][ T11] loopback_net_init+0x4c/0xb0 [ 131.623464][ T11] ops_init+0x40/0x14c [ 131.624054][ T11] setup_net+0x190/0x3c0 [ 131.624668][ T11] copy_net_ns+0xec/0x360 [ 131.625292][ T11] create_new_namespaces+0x114/0x350 [ 131.626094][ T11] unshare_nsproxy_namespaces+0x64/0xb0 [ 131.626874][ T11] ksys_unshare+0x18c/0x320 [ 131.627532][ T11] __arm64_sys_unshare+0x14/0x24 [ 131.628191][ T11] invoke_syscall+0x48/0x114 [ 131.628836][ T11] el0_svc_common.constprop.0+0x44/0xec VM DIAGNOSIS: 11:47:17 Registers: info registers vcpu 0 PC=ffff80000986629c X00=ffff80000a81b51e X01=0000000000000000 X02=ffff80010a81b990 X03=0000000000000000 X04=0000000000000069 X05=00000000fffffff7 X06=0000000000000002 X07=000000000000000f X08=000000000000002f X09=ffff80000a81b430 X10=000000000000002f X11=fffffffffffcc160 X12=ffff80000a81b533 X13=ffff80008a81b529 X14=ffffffffffffffff X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffa X19=ffff80000a81b9a9 X20=ffff80000a81b51e X21=ffff80000a81b998 X22=ffff0a00ffffff05 X23=00000000ffffffe0 X24=0000000000000008 X25=0000000000000020 X26=ffff800009fcb2bd X27=ffff800009fcb2bd X28=ffff80000a81b991 X29=ffff80000a81b4e0 X30=e3c9800009869608 SP=ffff80000a81b7c0 PSTATE=604000c9 -ZC- 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=0000000000000000:0000000000000004 Z01=0000000000000000:414fffffe0000000 Z02=9a42ceb514a7159c:3bc5476e43e1f3d8 Z03=0000000040000000:0000000000000000 Z04=4010040140100401:4000000000000000 Z05=4010040140100401:4010040140100401 Z06=5555400000400000:5555400000400000 Z07=0000000000000000:0000000000000000 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=0000000000000000:0000000000000000 Z17=0000000000000000:0000000000000000 Z18=0000000000000000:0000000000000000 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=0000000000000010:0000001231630a70 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff800008650948 X00=0000000000000000 X01=f0ff000005d0be00 X02=0000000000000200 X03=f9ff000003268180 X04=ffff00007fb781c0 X05=ffff00007fab6100 X06=0000000000008000 X07=0000000000000001 X08=0000000000000000 X09=0000000000000001 X10=fffffc0000000000 X11=0001000000000000 X12=0000000000000004 X13=f2ff000005005e00 X14=0000000000000001 X15=fcff000004c8d500 X16=f7ff000004c8d140 X17=f5ff000004c8d6e0 X18=f9ff0000050ced0c X19=0000000000000800 X20=0000000000000001 X21=ffff80000813c720 X22=ffff80000af7b4a0 X23=f0ff000005d0be00 X24=ffff80000af7b488 X25=ffff80000af7c000 X26=0000000000080800 X27=f5ff000005005500 X28=fbff000005005900 X29=ffff80000af7b3f0 X30=d29880000989a278 SP=ffff80000af7b3f0 PSTATE=20400009 --C- 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