syzkaller login: [ 56.601155][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 56.609128][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 56.621175][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:10824' (ECDSA) to the list of known hosts. 1970/01/01 00:01:14 fuzzer started 1970/01/01 00:01:16 connecting to host at localhost:38529 1970/01/01 00:01:16 checking machine... 1970/01/01 00:01:16 checking revisions... 1970/01/01 00:01:18 testing simple program... [ 78.512568][ T3055] cgroup: Unknown subsys name 'net' [ 78.866603][ T3055] cgroup: Unknown subsys name 'rlimit' executing program [ 82.675514][ T3058] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 82.699195][ T3058] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 84.146441][ T3058] device hsr_slave_0 entered promiscuous mode [ 84.195406][ T3058] device hsr_slave_1 entered promiscuous mode [ 85.132648][ T3058] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 85.194132][ T3058] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 85.261348][ T3058] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 85.331722][ T3058] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 86.467959][ T3058] 8021q: adding VLAN 0 to HW filter on device bond0 [ 86.527489][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 86.536033][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 87.491738][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 87.502144][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 87.542176][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 87.548200][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 87.579335][ T2899] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 87.619099][ T3369] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 87.704022][ T3369] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 87.709523][ T3369] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 87.741584][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 87.747054][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 87.781172][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 88.319592][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 88.321180][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 89.743802][ T2899] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 89.748887][ T2899] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 90.441199][ T3369] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 90.451421][ T3369] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 90.457918][ T3369] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 90.463263][ T3369] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 90.485666][ T3058] device veth0_vlan entered promiscuous mode [ 90.529730][ T3058] device veth1_vlan entered promiscuous mode [ 90.645083][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 90.650065][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 90.657098][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 90.662347][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 90.688134][ T3058] device veth0_macvtap entered promiscuous mode [ 90.712695][ T3058] device veth1_macvtap entered promiscuous mode [ 90.757211][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 90.763866][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 90.805593][ T3369] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 90.810876][ T3369] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 90.844090][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 90.850021][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 90.874823][ T3058] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.875910][ T3058] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.876966][ T3058] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.877991][ T3058] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:31 building call list... executing program [ 92.238531][ T38] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 92.516180][ T38] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 93.105600][ T38] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 93.304845][ T38] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 94.956267][ T38] device hsr_slave_0 left promiscuous mode [ 95.015510][ T38] device hsr_slave_1 left promiscuous mode executing program [ 95.204753][ T38] device veth1_macvtap left promiscuous mode [ 95.206163][ T38] device veth0_macvtap left promiscuous mode [ 95.207936][ T38] device veth1_vlan left promiscuous mode [ 95.209015][ T38] device veth0_vlan left promiscuous mode [ 96.375653][ T38] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 96.459409][ T38] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 96.739789][ T38] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 107.703653][ T38] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 107.704648][ T38] leaked reference. [ 107.705205][ T38] ipv6_add_dev+0x13c/0x580 [ 107.706703][ T38] addrconf_notify+0x1a0/0x710 [ 107.707474][ T38] raw_notifier_call_chain+0x54/0x74 [ 107.708114][ T38] call_netdevice_notifiers_info+0x54/0xa0 [ 107.708772][ T38] register_netdevice+0x3f0/0x564 [ 107.709378][ T38] register_netdev+0x24/0x4c [ 107.709993][ T38] loopback_net_init+0x4c/0xb0 [ 107.710597][ T38] ops_init+0x40/0x14c [ 107.711122][ T38] setup_net+0x190/0x3c0 [ 107.711693][ T38] copy_net_ns+0xec/0x360 [ 107.712383][ T38] create_new_namespaces+0x114/0x350 [ 107.713265][ T38] unshare_nsproxy_namespaces+0x64/0xb0 [ 107.713910][ T38] ksys_unshare+0x18c/0x320 [ 107.714470][ T38] __arm64_sys_unshare+0x14/0x24 [ 107.715053][ T38] invoke_syscall+0x48/0x114 [ 107.715618][ T38] el0_svc_common.constprop.0+0x44/0xec [ 107.985773][ T3049] can: request_module (can-proto-0) failed. [ 108.150162][ T3049] can: request_module (can-proto-0) failed. [ 108.254008][ T3049] can: request_module (can-proto-0) failed. executing program executing program executing program [ 117.451023][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.458116][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.461633][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.468717][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.013264][ T38] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 118.014101][ T38] leaked reference. [ 118.014538][ T38] ipv6_add_dev+0x13c/0x580 [ 118.015182][ T38] addrconf_notify+0x1a0/0x710 [ 118.015755][ T38] raw_notifier_call_chain+0x54/0x74 [ 118.016327][ T38] call_netdevice_notifiers_info+0x54/0xa0 [ 118.016970][ T38] register_netdevice+0x3f0/0x564 [ 118.017533][ T38] register_netdev+0x24/0x4c [ 118.018073][ T38] loopback_net_init+0x4c/0xb0 [ 118.018622][ T38] ops_init+0x40/0x14c [ 118.019122][ T38] setup_net+0x190/0x3c0 [ 118.019635][ T38] copy_net_ns+0xec/0x360 [ 118.020157][ T38] create_new_namespaces+0x114/0x350 [ 118.020745][ T38] unshare_nsproxy_namespaces+0x64/0xb0 [ 118.021348][ T38] ksys_unshare+0x18c/0x320 [ 118.021898][ T38] __arm64_sys_unshare+0x14/0x24 [ 118.022471][ T38] invoke_syscall+0x48/0x114 [ 118.023049][ T38] el0_svc_common.constprop.0+0x44/0xec [ 128.283962][ T38] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 128.285912][ T38] leaked reference. [ 128.286911][ T38] ipv6_add_dev+0x13c/0x580 [ 128.287705][ T38] addrconf_notify+0x1a0/0x710 [ 128.288579][ T38] raw_notifier_call_chain+0x54/0x74 [ 128.289727][ T38] call_netdevice_notifiers_info+0x54/0xa0 [ 128.291151][ T38] register_netdevice+0x3f0/0x564 [ 128.292230][ T38] register_netdev+0x24/0x4c [ 128.293057][ T38] loopback_net_init+0x4c/0xb0 [ 128.293783][ T38] ops_init+0x40/0x14c [ 128.294343][ T38] setup_net+0x190/0x3c0 [ 128.294955][ T38] copy_net_ns+0xec/0x360 [ 128.295548][ T38] create_new_namespaces+0x114/0x350 [ 128.296243][ T38] unshare_nsproxy_namespaces+0x64/0xb0 [ 128.296953][ T38] ksys_unshare+0x18c/0x320 [ 128.297581][ T38] __arm64_sys_unshare+0x14/0x24 [ 128.298568][ T38] invoke_syscall+0x48/0x114 [ 128.299583][ T38] el0_svc_common.constprop.0+0x44/0xec VM DIAGNOSIS: 00:24:46 Registers: info registers vcpu 0 PC=ffff8000087bc1e8 X00=0000000000000054 X01=0000000000000002 X02=0000000000000000 X03=ffff80000a7bd000 X04=ffff80000a5104e0 X05=0000000000000054 X06=372e37303120205b X07=205b5d3530323530 X08=7f7f7f7f7f7f7f7f X09=ffff80000a9bb6a0 X10=000000000000005d X11=fffffffffffcc188 X12=5b5d353032353037 X13=205d383354202020 X14=0000000000000000 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffd X19=ffff80000a61bcd3 X20=ffff8000087bc1c0 X21=f4ff000002d18080 X22=ffff80000a61bcf1 X23=0000000000000f01 X24=0000000000000031 X25=ffff80000a61c0e0 X26=0000000000000000 X27=00000000000000c0 X28=0000000000000031 X29=ffff80000a9bb750 X30=e6d48000087bc1fc SP=ffff80000a9bb750 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=0000000000000000:0000000000000000 Z01=2e6f732e6362696c:0036317465675f73 Z02=6f6972705f746567:5f64656863730036 Z03=0000000000000000:8000000000000000 Z04=0000000000000000:0000000000000800 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=0000000000000008:0000000800008000 Z18=0000000000000000:0000000000000800 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=ffff80000983d4b0 X00=01ffc000080a0005 X01=ffff00000a049000 X02=66660a7365636976 X03=3930303030386666 X04=7420346361623730 X05=5f6f695f7a6d6420 X06=66660a73746e6968 X07=3930303030386666 X08=7420303362623730 X09=73656d5f7a6d6420 X10=6666660a65676173 X11=3039303030303866 X12=2074203064626237 X13=746174735f7a6d64 X14=38666666660a7375 X15=6237303930303030 X16=6d64207420303765 X17=656d757365725f7a X18=0000000000000000 X19=fffffc0000281200 X20=ffff80000a98bc88 X21=fffffc00002a7f00 X22=0000000000000004 X23=0000004000dfc000 X24=ffff80000a3c0168 X25=fdff0000052bdc80 X26=fffffc000017a828 X27=fffffc0000281200 X28=fffffc0000000000 X29=ffff80000a98bb50 X30=54b68000082296e8 SP=ffff80000a98bb70 PSTATE=00400009 ---- 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=0000002400000065:7361656c2e346874 Z02=0000000000000032:0000002900000000 Z03=8020080080200800:0000000000000000 Z04=8020080280200800:8020080080200802 Z05=0000000000000000:0000000040000000 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=a00aa008a008a00a:aaa8a8aaa8a80040 Z18=8020080280200800:8020080080200802 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