syzkaller login: [ 52.220149][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 53.581934][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 55.526492][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:33688' (ECDSA) to the list of known hosts. 1970/01/01 00:01:17 fuzzer started 1970/01/01 00:01:19 connecting to host at localhost:35121 1970/01/01 00:01:19 checking machine... 1970/01/01 00:01:19 checking revisions... 1970/01/01 00:01:20 testing simple program... [ 80.977754][ T3054] cgroup: Unknown subsys name 'net' [ 81.351365][ T3054] cgroup: Unknown subsys name 'rlimit' executing program [ 84.790713][ T3056] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 84.810762][ T3056] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 86.300158][ T3056] device hsr_slave_0 entered promiscuous mode [ 86.358261][ T3056] device hsr_slave_1 entered promiscuous mode [ 87.631201][ T3056] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 87.709110][ T3056] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 87.796103][ T3056] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 87.864632][ T3056] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 88.997508][ T3056] 8021q: adding VLAN 0 to HW filter on device bond0 [ 89.046166][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 89.051059][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 89.710631][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 89.721393][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 89.750565][ T1717] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 89.757359][ T1717] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 89.784944][ T1717] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 89.817210][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 89.896110][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 89.900837][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 89.924763][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 89.931152][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 89.960004][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 90.496853][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 90.498528][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 91.891566][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 91.901253][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 92.621117][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 92.631354][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 92.638760][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 92.643677][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 92.668850][ T3056] device veth0_vlan entered promiscuous mode [ 92.712269][ T3056] device veth1_vlan entered promiscuous mode [ 92.830764][ T1717] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 92.839599][ T1717] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 92.844457][ T1717] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 92.852631][ T1717] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 92.873460][ T3056] device veth0_macvtap entered promiscuous mode [ 92.899849][ T3056] device veth1_macvtap entered promiscuous mode [ 92.910022][ T1717] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 92.917703][ T1717] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 92.998708][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 93.003895][ T3368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 93.040068][ T1717] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 93.048117][ T1717] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 93.079153][ T3056] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 93.080485][ T3056] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 93.081610][ T3056] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 93.082734][ T3056] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:33 building call list... [ 94.317140][ T3123] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 94.517076][ T3123] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 94.926671][ T3123] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 95.357499][ T3123] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 97.006049][ T3123] device hsr_slave_0 left promiscuous mode [ 97.047390][ T3123] device hsr_slave_1 left promiscuous mode [ 97.236744][ T3123] device veth1_macvtap left promiscuous mode [ 97.237696][ T3123] device veth0_macvtap left promiscuous mode [ 97.238936][ T3123] device veth1_vlan left promiscuous mode [ 97.239970][ T3123] device veth0_vlan left promiscuous mode executing program [ 98.460596][ T3123] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 98.530672][ T3123] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 98.822355][ T3123] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 109.853302][ T3045] can: request_module (can-proto-0) failed. [ 110.015569][ T3123] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 110.016705][ T3123] leaked reference. [ 110.017250][ T3123] ipv6_add_dev+0x13c/0x580 [ 110.018950][ T3123] addrconf_notify+0x1a0/0x710 [ 110.019791][ T3123] raw_notifier_call_chain+0x54/0x74 [ 110.020427][ T3123] call_netdevice_notifiers_info+0x54/0xa0 [ 110.021120][ T3045] can: request_module (can-proto-0) failed. [ 110.021120][ T3123] register_netdevice+0x3f0/0x564 [ 110.021240][ T3123] register_netdev+0x24/0x4c [ 110.022708][ T3123] loopback_net_init+0x4c/0xb0 [ 110.023335][ T3123] ops_init+0x40/0x14c [ 110.023872][ T3123] setup_net+0x190/0x3c0 [ 110.024417][ T3123] copy_net_ns+0xec/0x360 [ 110.025032][ T3123] create_new_namespaces+0x114/0x350 [ 110.025983][ T3123] unshare_nsproxy_namespaces+0x64/0xb0 [ 110.026636][ T3123] ksys_unshare+0x18c/0x320 [ 110.027205][ T3123] __arm64_sys_unshare+0x14/0x24 [ 110.027787][ T3123] invoke_syscall+0x48/0x114 [ 110.028360][ T3123] el0_svc_common.constprop.0+0x44/0xec [ 110.129177][ T3045] can: request_module (can-proto-0) failed. executing program executing program [ 118.082169][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.088668][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.092931][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.107170][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 120.095578][ T3123] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 120.096437][ T3123] leaked reference. [ 120.096907][ T3123] ipv6_add_dev+0x13c/0x580 [ 120.097563][ T3123] addrconf_notify+0x1a0/0x710 [ 120.098220][ T3123] raw_notifier_call_chain+0x54/0x74 [ 120.098858][ T3123] call_netdevice_notifiers_info+0x54/0xa0 [ 120.099515][ T3123] register_netdevice+0x3f0/0x564 [ 120.100129][ T3123] register_netdev+0x24/0x4c [ 120.100709][ T3123] loopback_net_init+0x4c/0xb0 [ 120.101324][ T3123] ops_init+0x40/0x14c [ 120.101927][ T3123] setup_net+0x190/0x3c0 [ 120.102461][ T3123] copy_net_ns+0xec/0x360 [ 120.103008][ T3123] create_new_namespaces+0x114/0x350 [ 120.103625][ T3123] unshare_nsproxy_namespaces+0x64/0xb0 [ 120.104269][ T3123] ksys_unshare+0x18c/0x320 [ 120.104835][ T3123] __arm64_sys_unshare+0x14/0x24 [ 120.105474][ T3123] invoke_syscall+0x48/0x114 [ 120.106128][ T3123] el0_svc_common.constprop.0+0x44/0xec [ 130.365825][ T3123] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 130.366696][ T3123] leaked reference. [ 130.367163][ T3123] ipv6_add_dev+0x13c/0x580 [ 130.367800][ T3123] addrconf_notify+0x1a0/0x710 [ 130.368452][ T3123] raw_notifier_call_chain+0x54/0x74 [ 130.369158][ T3123] call_netdevice_notifiers_info+0x54/0xa0 [ 130.369900][ T3123] register_netdevice+0x3f0/0x564 [ 130.370596][ T3123] register_netdev+0x24/0x4c [ 130.371233][ T3123] loopback_net_init+0x4c/0xb0 [ 130.371874][ T3123] ops_init+0x40/0x14c [ 130.372438][ T3123] setup_net+0x190/0x3c0 [ 130.373049][ T3123] copy_net_ns+0xec/0x360 [ 130.373648][ T3123] create_new_namespaces+0x114/0x350 [ 130.374344][ T3123] unshare_nsproxy_namespaces+0x64/0xb0 [ 130.375073][ T3123] ksys_unshare+0x18c/0x320 [ 130.375707][ T3123] __arm64_sys_unshare+0x14/0x24 [ 130.376376][ T3123] invoke_syscall+0x48/0x114 [ 130.377016][ T3123] el0_svc_common.constprop.0+0x44/0xec VM DIAGNOSIS: 10:07:45 Registers: info registers vcpu 0 PC=ffff8000091b60f8 X00=ffff8000091b60f0 X01=0000000000000001 X02=ffff80000a1a8000 X03=ffff800009fcb2d8 X04=ffff80000abf39f0 X05=faff000005083e00 X06=ffff80000abf3af0 X07=00000000ffffffc8 X08=ffff80000abf3b30 X09=ffff80000abf3b30 X10=ffff80000a49eb08 X11=fffffffffffcc1c0 X12=0000000000000300 X13=0000000000000900 X14=ffff80000a3eeb08 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffb X19=ffff80000a4d1108 X20=ffff80000a4d1100 X21=0000000000000000 X22=0000000000000004 X23=ffff80000a4d1108 X24=0000000000000028 X25=0000000000000064 X26=00000000ffffb1ae X27=00000000000000fa X28=00000000ffffb592 X29=ffff80000abf3840 X30=c68d800008151aa0 SP=ffff80000abf3840 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=6468636600277325:27206f742079726f Z02=0079726f74636572:696420726f20656c Z03=0000000000000000:0000000000000000 Z04=0000000000000000:0000000000ff0000 Z05=0000000040000001:0000000000000000 Z06=0000000000000000:0000000000100000 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=0000001000410000:0000001000410000 Z17=a00a8000a0000000:aa80a000aa820004 Z18=8020080280000000:8020000000000000 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=ffff80000813c720 X00=ffff80000ab438d0 X01=ffff800008011558 X02=0000000000000000 X03=0000000000000800 X04=0000000000000001 X05=ffff800008010000 X06=0000000000000013 X07=00000000a2d287ed X08=ffff8000080102a4 X09=0000000000000001 X10=fffffc0000000000 X11=0001000000000000 X12=0000000000000002 X13=fbff000005141900 X14=0000000000000000 X15=ffff80000ab43c28 X16=ffff800009ccc9b8 X17=0000000000000000 X18=f6ff00000514150c X19=f8ff000002c31100 X20=f4ff000003546f40 X21=fffffc00000d5180 X22=ffff000003546f40 X23=f4ff000003546f40 X24=f4ff000003546f40 X25=0000000000000000 X26=0000000000000000 X27=0000000000000000 X28=fbff000005081f00 X29=ffff80000ab43ca0 X30=39ff8000082fa23c SP=ffff80000ab43ca0 PSTATE=80400009 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=0000000000000000:414fffffe0000000 Z02=7c33c6ce8c019fb5:88be65fb31b6c0e9 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=0000000000000010:00000011bca1c3f0 Z31=0000000000000000:0000000000000000