syzkaller login: [ 56.308699][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 56.313062][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 56.321793][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:13574' (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:38695 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... [ 80.170501][ T3055] cgroup: Unknown subsys name 'net' [ 80.526435][ T3055] cgroup: Unknown subsys name 'rlimit' executing program [ 83.913349][ T3058] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.933455][ T3058] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 85.411366][ T3058] device hsr_slave_0 entered promiscuous mode [ 85.467945][ T3058] device hsr_slave_1 entered promiscuous mode [ 86.554057][ T3058] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 86.676545][ T3058] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 86.759063][ T3058] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 86.823630][ T3058] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 88.070063][ T3058] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.122972][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 88.130653][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 88.822629][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 88.832684][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 88.862262][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 88.870209][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 88.906216][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 88.938787][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 89.029762][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 89.034927][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 89.062955][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 89.071056][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 89.097520][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 89.661545][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 89.663240][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 91.104302][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 91.111571][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 91.797488][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 91.803276][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 91.811946][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 91.819244][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 91.841775][ T3058] device veth0_vlan entered promiscuous mode [ 91.894397][ T3058] device veth1_vlan entered promiscuous mode [ 92.014936][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 92.021838][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 92.032350][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 92.041224][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 92.065635][ T3058] device veth0_macvtap entered promiscuous mode [ 92.101045][ T3058] device veth1_macvtap entered promiscuous mode [ 92.110303][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 92.118257][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 92.200211][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 92.207852][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 92.238860][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 92.244141][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 92.275677][ T3058] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.277322][ T3058] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.278847][ T3058] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.280343][ T3058] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:32 building call list... [ 93.605122][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 93.869029][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 94.111932][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 94.267288][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 96.162546][ T9] device hsr_slave_0 left promiscuous mode [ 96.217280][ T9] device hsr_slave_1 left promiscuous mode [ 96.407364][ T9] device veth1_macvtap left promiscuous mode [ 96.408433][ T9] device veth0_macvtap left promiscuous mode [ 96.409915][ T9] device veth1_vlan left promiscuous mode [ 96.411357][ T9] device veth0_vlan left promiscuous mode executing program [ 97.693477][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 97.773277][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 98.104073][ T9] bond0 (unregistering): Released all slaves executing program executing program executing program [ 108.617082][ T3051] can: request_module (can-proto-0) failed. [ 108.769843][ T3051] can: request_module (can-proto-0) failed. executing program [ 108.875768][ T3051] can: request_module (can-proto-0) failed. [ 109.315956][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 109.317045][ T9] leaked reference. [ 109.317607][ T9] ipv6_add_dev+0x13c/0x580 [ 109.319274][ T9] addrconf_notify+0x1a0/0x710 [ 109.319945][ T9] raw_notifier_call_chain+0x54/0x74 [ 109.320683][ T9] call_netdevice_notifiers_info+0x54/0xa0 [ 109.321453][ T9] register_netdevice+0x3f0/0x564 [ 109.322158][ T9] register_netdev+0x24/0x4c [ 109.322822][ T9] loopback_net_init+0x4c/0xb0 [ 109.323496][ T9] ops_init+0x40/0x14c [ 109.324135][ T9] setup_net+0x190/0x3c0 [ 109.324697][ T9] copy_net_ns+0xec/0x360 [ 109.325262][ T9] create_new_namespaces+0x114/0x350 [ 109.325994][ T9] unshare_nsproxy_namespaces+0x64/0xb0 [ 109.326633][ T9] ksys_unshare+0x18c/0x320 [ 109.327171][ T9] __arm64_sys_unshare+0x14/0x24 [ 109.327772][ T9] invoke_syscall+0x48/0x114 [ 109.328371][ T9] el0_svc_common.constprop.0+0x44/0xec executing program [ 113.861247][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program [ 117.324652][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.329221][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.332958][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 119.596076][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 119.597082][ T9] leaked reference. [ 119.597597][ T9] ipv6_add_dev+0x13c/0x580 [ 119.598231][ T9] addrconf_notify+0x1a0/0x710 [ 119.598881][ T9] raw_notifier_call_chain+0x54/0x74 [ 119.599556][ T9] call_netdevice_notifiers_info+0x54/0xa0 [ 119.600288][ T9] register_netdevice+0x3f0/0x564 [ 119.600963][ T9] register_netdev+0x24/0x4c [ 119.601608][ T9] loopback_net_init+0x4c/0xb0 [ 119.602277][ T9] ops_init+0x40/0x14c [ 119.602863][ T9] setup_net+0x190/0x3c0 [ 119.603480][ T9] copy_net_ns+0xec/0x360 [ 119.604089][ T9] create_new_namespaces+0x114/0x350 [ 119.604808][ T9] unshare_nsproxy_namespaces+0x64/0xb0 [ 119.605502][ T9] ksys_unshare+0x18c/0x320 [ 119.606059][ T9] __arm64_sys_unshare+0x14/0x24 [ 119.606660][ T9] invoke_syscall+0x48/0x114 [ 119.607244][ T9] el0_svc_common.constprop.0+0x44/0xec [ 129.865893][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 129.866719][ T9] leaked reference. [ 129.867156][ T9] ipv6_add_dev+0x13c/0x580 [ 129.867726][ T9] addrconf_notify+0x1a0/0x710 [ 129.868266][ T9] raw_notifier_call_chain+0x54/0x74 [ 129.868904][ T9] call_netdevice_notifiers_info+0x54/0xa0 [ 129.869634][ T9] register_netdevice+0x3f0/0x564 [ 129.870281][ T9] register_netdev+0x24/0x4c [ 129.870901][ T9] loopback_net_init+0x4c/0xb0 [ 129.871541][ T9] ops_init+0x40/0x14c [ 129.872137][ T9] setup_net+0x190/0x3c0 [ 129.872748][ T9] copy_net_ns+0xec/0x360 [ 129.873343][ T9] create_new_namespaces+0x114/0x350 [ 129.874015][ T9] unshare_nsproxy_namespaces+0x64/0xb0 [ 129.874704][ T9] ksys_unshare+0x18c/0x320 [ 129.875348][ T9] __arm64_sys_unshare+0x14/0x24 [ 129.876001][ T9] invoke_syscall+0x48/0x114 [ 129.876654][ T9] el0_svc_common.constprop.0+0x44/0xec VM DIAGNOSIS: 11:47:16 Registers: info registers vcpu 0 PC=ffff8000087bb880 X00=faff000002d18080 X01=0000000000000002 X02=ffff80000a7bd018 X03=0000000000000018 X04=faff000002d18080 X05=0000000000000037 X06=332e39303120205b X07=205b5d3730363731 X08=7f7f7f7f7f7f7f7f X09=ffff80000a80b6a0 X10=000000000000005d X11=fffffffffffcc230 X12=5b5d373036373133 X13=205d395420202020 X14=0000000000000000 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffe X19=ffff80000a61bcca X20=ffff8000087bc020 X21=faff000002d18080 X22=ffff80000a61bcf1 X23=0000000000000f01 X24=0000000000000031 X25=ffff80000a61c0e0 X26=0000000000000000 X27=00000000000000c0 X28=0000000000000031 X29=ffff80000a80b750 X30=58d18000087bc048 SP=ffff80000a80b750 PSTATE=804000c9 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=0000000000000000:0000000000000004 Z01=0000000000000000:414fffffe0000000 Z02=ffc63c2c92ba7403:2697735b63a31363 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=0000000000000010:000000119969cde0 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff80000830b338 X00=000000000000006c X01=f9ff00000345ba38 X02=ffff80000a4de888 X03=0000000000000051 X04=0000000000000000 X05=faff000007703e00 X06=0000000000000000 X07=0000fffffffffff8 X08=fefefefefefefeff X09=0000000000000000 X10=0000000000000000 X11=0000000000000000 X12=0000000000000000 X13=0000000000000000 X14=0000000000000000 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=fdff000002e7d021 X20=fefefefefefefeff X21=ffff80000ab1bb90 X22=d0d0d0d0d0d0d0d0 X23=2f2f2f2f2f2f2f2f X24=00000000fffffff6 X25=ffff80000a3eac98 X26=0000000000000000 X27=61c8864680b583eb X28=faff000007703e00 X29=ffff80000ab1ba30 X30=ffff8000083061e4 SP=ffff80000ab1ba30 PSTATE=60400009 -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=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