syzkaller login: [ 69.659812][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 69.663528][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 71.466152][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:63637' (ECDSA) to the list of known hosts. 1970/01/01 00:01:20 fuzzer started 1970/01/01 00:01:22 connecting to host at localhost:35699 1970/01/01 00:01:22 checking machine... 1970/01/01 00:01:22 checking revisions... 1970/01/01 00:01:23 testing simple program... [ 84.171383][ T3062] cgroup: Unknown subsys name 'net' [ 84.532311][ T3062] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 88.881426][ T3065] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 88.900747][ T3065] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 90.651507][ T3065] device hsr_slave_0 entered promiscuous mode [ 90.720332][ T3065] device hsr_slave_1 entered promiscuous mode executing program [ 91.904639][ T3065] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 91.982392][ T3065] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 92.059605][ T3065] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 92.139352][ T3065] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 93.411834][ T3065] 8021q: adding VLAN 0 to HW filter on device bond0 [ 93.487063][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 93.515281][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 94.266802][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 94.270377][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 94.309986][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 94.316903][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 94.345427][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 94.372797][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 94.446257][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 94.449758][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 94.489833][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 94.493320][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 94.533056][ T3065] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 95.230309][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 95.231465][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 97.080066][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 97.107224][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 98.080033][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 98.091844][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 98.116962][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 98.121026][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 98.140476][ T3065] device veth0_vlan entered promiscuous mode [ 98.222834][ T3065] device veth1_vlan entered promiscuous mode [ 98.461031][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 98.470092][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 98.509914][ T3065] device veth0_macvtap entered promiscuous mode [ 98.553467][ T3065] device veth1_macvtap entered promiscuous mode [ 98.640456][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 98.650410][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 98.663273][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 98.668812][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 98.708511][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 98.712599][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 98.762323][ T3065] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.763387][ T3065] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.768987][ T3065] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.769467][ T3065] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:39 building call list... [ 100.314454][ T49] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 100.607019][ T49] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 100.763060][ T49] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 100.946799][ T49] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 103.094696][ T49] device hsr_slave_0 left promiscuous mode [ 103.156546][ T49] device hsr_slave_1 left promiscuous mode [ 103.398462][ T49] device veth1_macvtap left promiscuous mode [ 103.399821][ T49] device veth0_macvtap left promiscuous mode [ 103.401208][ T49] device veth1_vlan left promiscuous mode [ 103.402765][ T49] device veth0_vlan left promiscuous mode executing program [ 105.448545][ T49] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 105.609426][ T49] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 106.209000][ T49] bond0 (unregistering): Released all slaves executing program executing program executing program [ 115.562528][ T3056] can: request_module (can-proto-0) failed. executing program [ 115.778564][ T3056] can: request_module (can-proto-0) failed. [ 115.917434][ T3056] can: request_module (can-proto-0) failed. [ 117.865341][ T49] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 117.866329][ T49] leaked reference. [ 117.866947][ T49] ipv6_add_dev+0x300/0xeec [ 117.867631][ T49] addrconf_notify+0x3ac/0x1080 [ 117.868360][ T49] notifier_call_chain+0xc0/0x180 [ 117.868898][ T49] raw_notifier_call_chain+0x18/0x24 [ 117.869156][ T49] call_netdevice_notifiers_info+0x80/0xe0 [ 117.869429][ T49] register_netdevice+0xa7c/0x1094 [ 117.869690][ T49] register_netdev+0x24/0x4c [ 117.870064][ T49] loopback_net_init+0x6c/0x124 [ 117.870338][ T49] ops_init+0x8c/0x46c [ 117.870579][ T49] setup_net+0x638/0xbec [ 117.870809][ T49] copy_net_ns+0x1fc/0x560 [ 117.871138][ T49] create_new_namespaces+0x300/0x840 [ 117.871449][ T49] unshare_nsproxy_namespaces+0x7c/0x174 [ 117.871710][ T49] ksys_unshare+0x284/0x580 [ 117.871961][ T49] __arm64_sys_unshare+0x30/0x50 [ 117.872256][ T49] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 128.024834][ T49] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 128.025364][ T49] leaked reference. [ 128.025580][ T49] ipv6_add_dev+0x300/0xeec [ 128.025850][ T49] addrconf_notify+0x3ac/0x1080 [ 128.026105][ T49] notifier_call_chain+0xc0/0x180 [ 128.026337][ T49] raw_notifier_call_chain+0x18/0x24 [ 128.026567][ T49] call_netdevice_notifiers_info+0x80/0xe0 [ 128.026828][ T49] register_netdevice+0xa7c/0x1094 [ 128.027062][ T49] register_netdev+0x24/0x4c [ 128.027291][ T49] loopback_net_init+0x6c/0x124 [ 128.027547][ T49] ops_init+0x8c/0x46c [ 128.027769][ T49] setup_net+0x638/0xbec [ 128.027992][ T49] copy_net_ns+0x1fc/0x560 [ 128.028217][ T49] create_new_namespaces+0x300/0x840 [ 128.028445][ T49] unshare_nsproxy_namespaces+0x7c/0x174 [ 128.028684][ T49] ksys_unshare+0x284/0x580 [ 128.028925][ T49] __arm64_sys_unshare+0x30/0x50 [ 128.029154][ T49] invoke_syscall+0x6c/0x260 [ 128.279606][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 128.282790][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 128.288689][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 128.291769][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 138.285558][ T49] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 138.286298][ T49] leaked reference. [ 138.286630][ T49] ipv6_add_dev+0x300/0xeec [ 138.287039][ T49] addrconf_notify+0x3ac/0x1080 [ 138.287397][ T49] notifier_call_chain+0xc0/0x180 [ 138.287787][ T49] raw_notifier_call_chain+0x18/0x24 [ 138.288162][ T49] call_netdevice_notifiers_info+0x80/0xe0 [ 138.288544][ T49] register_netdevice+0xa7c/0x1094 [ 138.288918][ T49] register_netdev+0x24/0x4c [ 138.289280][ T49] loopback_net_init+0x6c/0x124 [ 138.289649][ T49] ops_init+0x8c/0x46c [ 138.290026][ T49] setup_net+0x638/0xbec [ 138.290361][ T49] copy_net_ns+0x1fc/0x560 [ 138.290693][ T49] create_new_namespaces+0x300/0x840 [ 138.291064][ T49] unshare_nsproxy_namespaces+0x7c/0x174 [ 138.291459][ T49] ksys_unshare+0x284/0x580 [ 138.291820][ T49] __arm64_sys_unshare+0x30/0x50 [ 138.292183][ T49] invoke_syscall+0x6c/0x260 VM DIAGNOSIS: 11:54:00 Registers: info registers vcpu 0 PC=ffff8000097cb710 X00=0000000000000002 X01=0000000000000002 X02=ffff000009e9f172 X03=dfff800000000000 X04=1fffe000013d3e2e X05=ffff8000113a7170 X06=0000000000000001 X07=0000000000000004 X08=ffff8000113a7173 X09=dfff800000000000 X10=ffff700002274e2e X11=1ffff00002274e2e X12=ffff700002274e2f X13=0000000000000000 X14=1ffff00002274e04 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a93ac00 X19=ffff000009e9f080 X20=ffff800010f3d030 X21=ffff80000e951280 X22=1fffe000013d3e58 X23=00000000000000c0 X24=0000000000000001 X25=0000000000000000 X26=ffff000009e9f080 X27=1ffff00002274ea2 X28=0000000000000035 X29=ffff8000113a7190 X30=ffff8000097d2c9c SP=ffff8000113a7190 PSTATE=800000c5 N--- EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:0000000000000004 Q01=0000000000000000:414fffffe0000000 Q02=016a65c42d4be4f9:cf003f048a1b1b5c Q03=0000000040000000:0000000000000000 Q04=4010040140100401:4000000000000000 Q05=4010040140100401:4010040140100401 Q06=5555400000400000:5555400000400000 Q07=0000000000000000:0000000000000000 Q08=0000000000000000:0000000000000000 Q09=0000000000000000:0000000000000000 Q10=0000000000000000:0000000000000000 Q11=0000000000000000:0000000000000000 Q12=0000000000000000:0000000000000000 Q13=0000000000000000:0000000000000000 Q14=0000000000000000:0000000000000000 Q15=0000000000000000:0000000000000000 Q16=0000000000000000:0000000000000000 Q17=0000000000000000:0000000000000000 Q18=0000000000000000:0000000000000000 Q19=0000000000000000:0000000000000000 Q20=0000000000000000:0000000000000000 Q21=0000000000000000:0000000000000000 Q22=0000000000000000:0000000000000000 Q23=0000000000000000:0000000000000000 Q24=0000000000000000:0000000000000000 Q25=0000000000000000:0000000000000000 Q26=0000000000000000:0000000000000000 Q27=0000000000000000:0000000000000000 Q28=0000000000000000:0000000000000000 Q29=0000000000000000:0000000000000000 Q30=0000000000000010:000000125f7b74a0 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff80000831b964 X00=0000000000000001 X01=0000000000000000 X02=1fffe000026b66c1 X03=1fffe000026b66c1 X04=1fffe000026b66c3 X05=ffff7000022c4ed6 X06=dfff800000000000 X07=00000000f1f1f1f1 X08=ffff0000135b4040 X09=0000000000000050 X10=ffff0000135b3fb4 X11=0000000000000007 X12=1fffe000026b67f6 X13=1fffe000026b6808 X14=1ffff000022c4eb2 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=0000000000000000 X20=0000000000000dc0 X21=0000000000000000 X22=0000000000000dc0 X23=ffff80000ca88e8c X24=0000000000000100 X25=ffff80000cbe28e0 X26=00000000ffffffff X27=0000000000000004 X28=1fffe00001f74789 X29=ffff800011627540 X30=ffff80000cb3b024 SP=ffff800011627540 PSTATE=10000005 ---V EL1h FPCR=00000000 FPSR=00000000 Q00=2f2f2f2f2f2f2f2f:2f2f2f2f2f2f2f2f Q01=6f73657262696c00:0000000000000008 Q02=7265645f4d54495f:00322e6f732e766c Q03=0000000000000002:8020080280200800 Q04=0000000000000000:8000000000000000 Q05=0000000000000000:0000000000000000 Q06=0000000000000000:0000000000000000 Q07=8020080280200802:8020080280200802 Q08=0000000000000000:0000000000000000 Q09=0000000000000000:0000000000000000 Q10=0000000000000000:0000000000000000 Q11=0000000000000000:0000000000000000 Q12=0000000000000000:0000000000000000 Q13=0000000000000000:0000000000000000 Q14=0000000000000000:0000000000000000 Q15=0000000000000000:0000000000000000 Q16=4010040140100401:4010040140100401 Q17=0000000080000000:000080000002aaa8 Q18=0000000000000000:8000000000000000 Q19=0000000000000000:0000000000000000 Q20=0000000000000000:0000000000000000 Q21=0000000000000000:0000000000000000 Q22=0000000000000000:0000000000000000 Q23=0000000000000000:0000000000000000 Q24=0000000000000000:0000000000000000 Q25=0000000000000000:0000000000000000 Q26=0000000000000000:0000000000000000 Q27=0000000000000000:0000000000000000 Q28=0000000000000000:0000000000000000 Q29=0000000000000000:0000000000000000 Q30=0000000000000000:0000000000000000 Q31=0000000000000000:0000000000000000