syzkaller login: [ 101.325890][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 101.350603][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 101.373530][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:65496' (ECDSA) to the list of known hosts. 1970/01/01 00:02:25 fuzzer started 1970/01/01 00:02:28 connecting to host at localhost:44689 1970/01/01 00:02:28 checking machine... 1970/01/01 00:02:28 checking revisions... 1970/01/01 00:02:31 testing simple program... [ 151.988534][ T3054] cgroup: Unknown subsys name 'net' [ 152.520503][ T3054] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program [ 159.193033][ T3057] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 159.234985][ T3057] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 162.378290][ T3057] device hsr_slave_0 entered promiscuous mode [ 162.437015][ T3057] device hsr_slave_1 entered promiscuous mode executing program [ 164.550068][ T3057] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 164.654939][ T3057] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 164.730684][ T3057] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 164.828713][ T3057] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 167.118897][ T3057] 8021q: adding VLAN 0 to HW filter on device bond0 [ 167.265959][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 167.285232][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 168.761067][ T3308] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 168.770429][ T3308] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 168.846299][ T3308] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 168.861051][ T3308] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 168.909860][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 168.995287][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 169.189132][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 169.200136][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 169.292954][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 169.300357][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 169.359428][ T3057] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 170.566998][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 170.569603][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 173.466321][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 173.483737][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 175.089556][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 175.110799][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 175.143627][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 175.161221][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 175.208332][ T3057] device veth0_vlan entered promiscuous mode [ 175.330804][ T3057] device veth1_vlan entered promiscuous mode [ 175.674182][ T3308] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 175.684700][ T3308] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 175.730166][ T3057] device veth0_macvtap entered promiscuous mode [ 175.765370][ T3057] device veth1_macvtap entered promiscuous mode [ 175.906766][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 175.914041][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 175.921409][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 175.936523][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 175.993571][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 176.016166][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 176.066642][ T3057] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 176.068167][ T3057] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 176.069657][ T3057] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 176.070962][ T3057] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:02:56 building call list... [ 178.173834][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 178.369140][ T11] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 178.537449][ T11] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 178.726793][ T11] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 181.432887][ T11] device hsr_slave_0 left promiscuous mode [ 181.484861][ T11] device hsr_slave_1 left promiscuous mode [ 181.705466][ T11] device veth1_macvtap left promiscuous mode [ 181.708847][ T11] device veth0_macvtap left promiscuous mode [ 181.724185][ T11] device veth1_vlan left promiscuous mode [ 181.726711][ T11] device veth0_vlan left promiscuous mode executing program [ 184.137441][ T11] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 184.267715][ T11] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 184.853534][ T11] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 196.213583][ T11] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 196.217412][ T11] leaked reference. [ 196.220981][ T11] ipv6_add_dev+0x13c/0x580 [ 196.224684][ T11] addrconf_notify+0x1a0/0x710 [ 196.227538][ T11] raw_notifier_call_chain+0x54/0x74 [ 196.230508][ T11] call_netdevice_notifiers_info+0x54/0xa0 [ 196.236093][ T11] register_netdevice+0x3f0/0x564 [ 196.239263][ T11] register_netdev+0x24/0x4c [ 196.241985][ T11] loopback_net_init+0x4c/0xb0 [ 196.245429][ T11] ops_init+0x40/0x14c [ 196.246457][ T11] setup_net+0x190/0x3c0 [ 196.247484][ T11] copy_net_ns+0xec/0x360 [ 196.248530][ T11] create_new_namespaces+0x114/0x350 [ 196.249666][ T11] unshare_nsproxy_namespaces+0x64/0xb0 [ 196.250778][ T11] ksys_unshare+0x18c/0x320 [ 196.251811][ T11] __arm64_sys_unshare+0x14/0x24 [ 196.252899][ T11] invoke_syscall+0x48/0x114 [ 196.254024][ T11] el0_svc_common.constprop.0+0x44/0xec executing program executing program executing program [ 206.493073][ T11] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 206.494726][ T11] leaked reference. [ 206.495601][ T11] ipv6_add_dev+0x13c/0x580 [ 206.496716][ T11] addrconf_notify+0x1a0/0x710 [ 206.497996][ T11] raw_notifier_call_chain+0x54/0x74 [ 206.499300][ T11] call_netdevice_notifiers_info+0x54/0xa0 [ 206.501021][ T11] register_netdevice+0x3f0/0x564 [ 206.502554][ T11] register_netdev+0x24/0x4c [ 206.503668][ T11] loopback_net_init+0x4c/0xb0 [ 206.505351][ T11] ops_init+0x40/0x14c [ 206.506687][ T11] setup_net+0x190/0x3c0 [ 206.508170][ T11] copy_net_ns+0xec/0x360 [ 206.509629][ T11] create_new_namespaces+0x114/0x350 [ 206.510794][ T11] unshare_nsproxy_namespaces+0x64/0xb0 [ 206.512233][ T11] ksys_unshare+0x18c/0x320 [ 206.513261][ T11] __arm64_sys_unshare+0x14/0x24 [ 206.514511][ T11] invoke_syscall+0x48/0x114 [ 206.515758][ T11] el0_svc_common.constprop.0+0x44/0xec executing program executing program [ 210.619051][ T3049] can: request_module (can-proto-0) failed. [ 210.948848][ T3049] can: request_module (can-proto-0) failed. [ 211.140672][ T3049] can: request_module (can-proto-0) failed. executing program [ 213.215877][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 213.227557][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 213.239926][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 213.250198][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program [ 216.682865][ T11] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 216.685381][ T11] leaked reference. [ 216.686299][ T11] ipv6_add_dev+0x13c/0x580 [ 216.687453][ T11] addrconf_notify+0x1a0/0x710 [ 216.690598][ T11] raw_notifier_call_chain+0x54/0x74 [ 216.692060][ T11] call_netdevice_notifiers_info+0x54/0xa0 [ 216.693436][ T11] register_netdevice+0x3f0/0x564 [ 216.694973][ T11] register_netdev+0x24/0x4c [ 216.705333][ T11] loopback_net_init+0x4c/0xb0 [ 216.706540][ T11] ops_init+0x40/0x14c [ 216.707550][ T11] setup_net+0x190/0x3c0 [ 216.708604][ T11] copy_net_ns+0xec/0x360 [ 216.709660][ T11] create_new_namespaces+0x114/0x350 [ 216.710773][ T11] unshare_nsproxy_namespaces+0x64/0xb0 [ 216.712421][ T11] ksys_unshare+0x18c/0x320 [ 216.713510][ T11] __arm64_sys_unshare+0x14/0x24 [ 216.714623][ T11] invoke_syscall+0x48/0x114 [ 216.715657][ T11] el0_svc_common.constprop.0+0x44/0xec executing program executing program executing program VM DIAGNOSIS: 18:28:01 Registers: info registers vcpu 0 PC=ffff80000813c810 X00=0000000000000001 X01=0000000000000002 X02=ffff80000c4838d0 X03=0000000000000040 X04=0000000000000004 X05=0000000000000000 X06=ffff80000c483910 X07=0000000000000000 X08=00000000000000a2 X09=00000000fa225cf8 X10=00000000000000a2 X11=000000000c91d55a X12=00000000cf84793b X13=000000004dd6cba6 X14=0000000000000001 X15=00000000564c432e X16=0000000060ede2ae X17=000000009e9b2b53 X18=0000000000000014 X19=ffff80000c483d00 X20=ffff80000c483cc0 X21=ffff80000813c720 X22=ffff80000c4838d0 X23=f3ff000002cf2e80 X24=ffff80000c4838b8 X25=ffff80000c484000 X26=0000000000080800 X27=fbff000009586000 X28=0000000000000000 X29=ffff80000c483820 X30=4ee2800009898238 SP=ffff80000c483820 PSTATE=60400009 -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=1d285546bbee50e5:1ca9da93d3ec652b 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=0000000000000010:000000215e0ac430 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000087bc000 X00=0000000000000065 X01=0000000000000002 X02=0000000000000000 X03=ffff80000a7bd000 X04=ffff80000a5104e0 X05=0000000000000065 X06=322e36393120205b X07=205b5d3231343731 X08=7f7f7f7f7f7f7f7f X09=ffff80000a81b6f0 X10=000000000000005d X11=fffffffffffcc1b0 X12=5b5d323134373132 X13=205d313154202020 X14=0000000000000000 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffd X19=ffff80000a61bcdc X20=ffff8000087bc020 X21=faff000002d07c80 X22=ffff80000a61bce9 X23=0000000000000f01 X24=0000000000000029 X25=ffff80000a61c0e0 X26=0000000000000000 X27=00000000000000c0 X28=0000000000000029 X29=ffff80000a81b7a0 X30=e9c58000087bc05c SP=ffff80000a81b7a0 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=252f7325006c6c61:00736d5f656d6974 Z02=63615000676e6964:726177726f662f73 Z03=00000000ff000000:ff00000000000000 Z04=000000ff00000000:0000000000000000 Z05=4000000140000000:4000000000000000 Z06=0000000100000000:0000000000000000 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=0100000041404000:0100000041404000 Z17=8000000020022000:8000222000000000 Z18=8000000000000000:0020000200200000 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