syzkaller login: [ 69.705178][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 69.711675][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 69.723747][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:59741' (ECDSA) to the list of known hosts. 1970/01/01 00:01:34 fuzzer started 1970/01/01 00:01:37 connecting to host at localhost:41135 1970/01/01 00:01:37 checking machine... 1970/01/01 00:01:37 checking revisions... 1970/01/01 00:01:38 testing simple program... [ 99.046064][ T3062] cgroup: Unknown subsys name 'net' [ 99.432365][ T3062] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 103.756881][ T3065] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 103.775505][ T3065] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 105.471540][ T3065] device hsr_slave_0 entered promiscuous mode [ 105.522627][ T3065] device hsr_slave_1 entered promiscuous mode executing program [ 106.673085][ T3065] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 106.730806][ T3065] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 106.841885][ T3065] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 106.894587][ T3065] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 108.189443][ T3065] 8021q: adding VLAN 0 to HW filter on device bond0 [ 108.245939][ T896] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 108.262217][ T896] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 109.090307][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 109.093904][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 109.125303][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 109.132074][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 109.190581][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 109.231215][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready executing program [ 109.386393][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 109.390873][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 109.446709][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 109.452278][ T893] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 109.472575][ T3065] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 110.205478][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 110.206773][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 111.966379][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 111.981262][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 112.819382][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 112.823612][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 112.843400][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 112.864939][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 112.872070][ T3065] device veth0_vlan entered promiscuous mode [ 112.923664][ T3065] device veth1_vlan entered promiscuous mode [ 112.972534][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 112.981127][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 113.058279][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 113.062711][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 113.085955][ T3065] device veth0_macvtap entered promiscuous mode [ 113.120204][ T3065] device veth1_macvtap entered promiscuous mode [ 113.199528][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 113.203044][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 113.212735][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 113.216872][ T3382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 113.265098][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 113.271833][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 113.309112][ T3065] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 113.310009][ T3065] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 113.310362][ T3065] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 113.310732][ T3065] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:54 building call list... [ 115.003201][ T1168] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 115.441006][ T1168] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 115.720655][ T1168] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 115.964193][ T1168] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 118.353002][ T1168] device hsr_slave_0 left promiscuous mode [ 118.400875][ T1168] device hsr_slave_1 left promiscuous mode [ 118.682143][ T1168] device veth1_macvtap left promiscuous mode [ 118.683528][ T1168] device veth0_macvtap left promiscuous mode [ 118.684800][ T1168] device veth1_vlan left promiscuous mode [ 118.686045][ T1168] device veth0_vlan left promiscuous mode [ 120.758298][ T1168] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 120.883999][ T1168] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface executing program [ 121.298365][ T1168] bond0 (unregistering): Released all slaves executing program executing program [ 128.945022][ T3053] can: request_module (can-proto-0) failed. [ 129.146720][ T3053] can: request_module (can-proto-0) failed. [ 129.286804][ T3053] can: request_module (can-proto-0) failed. executing program [ 132.759171][ T1168] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 132.760027][ T1168] leaked reference. [ 132.760624][ T1168] ipv6_add_dev+0x300/0xeec [ 132.761091][ T1168] addrconf_notify+0x3ac/0x1080 [ 132.761679][ T1168] notifier_call_chain+0xc0/0x180 [ 132.762035][ T1168] raw_notifier_call_chain+0x18/0x24 [ 132.762299][ T1168] call_netdevice_notifiers_info+0x80/0xe0 [ 132.762605][ T1168] register_netdevice+0xa7c/0x1094 [ 132.762883][ T1168] register_netdev+0x24/0x4c [ 132.763111][ T1168] loopback_net_init+0x6c/0x124 [ 132.763449][ T1168] ops_init+0x8c/0x46c [ 132.763674][ T1168] setup_net+0x638/0xbec [ 132.763898][ T1168] copy_net_ns+0x1fc/0x560 [ 132.764128][ T1168] create_new_namespaces+0x300/0x840 [ 132.764373][ T1168] unshare_nsproxy_namespaces+0x7c/0x174 [ 132.764623][ T1168] ksys_unshare+0x284/0x580 [ 132.764860][ T1168] __arm64_sys_unshare+0x30/0x50 [ 132.765098][ T1168] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 142.456930][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 142.460922][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 142.463831][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 142.466660][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 142.828071][ T1168] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 142.828568][ T1168] leaked reference. [ 142.828782][ T1168] ipv6_add_dev+0x300/0xeec [ 142.829047][ T1168] addrconf_notify+0x3ac/0x1080 [ 142.829294][ T1168] notifier_call_chain+0xc0/0x180 [ 142.829547][ T1168] raw_notifier_call_chain+0x18/0x24 [ 142.829793][ T1168] call_netdevice_notifiers_info+0x80/0xe0 [ 142.830050][ T1168] register_netdevice+0xa7c/0x1094 [ 142.830310][ T1168] register_netdev+0x24/0x4c [ 142.830567][ T1168] loopback_net_init+0x6c/0x124 [ 142.830816][ T1168] ops_init+0x8c/0x46c [ 142.831046][ T1168] setup_net+0x638/0xbec [ 142.831285][ T1168] copy_net_ns+0x1fc/0x560 [ 142.831519][ T1168] create_new_namespaces+0x300/0x840 [ 142.831764][ T1168] unshare_nsproxy_namespaces+0x7c/0x174 [ 142.832029][ T1168] ksys_unshare+0x284/0x580 [ 142.832271][ T1168] __arm64_sys_unshare+0x30/0x50 [ 142.832518][ T1168] invoke_syscall+0x6c/0x260 [ 153.088923][ T1168] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 153.089496][ T1168] leaked reference. [ 153.089760][ T1168] ipv6_add_dev+0x300/0xeec [ 153.090080][ T1168] addrconf_notify+0x3ac/0x1080 [ 153.090360][ T1168] notifier_call_chain+0xc0/0x180 [ 153.090648][ T1168] raw_notifier_call_chain+0x18/0x24 [ 153.090908][ T1168] call_netdevice_notifiers_info+0x80/0xe0 [ 153.091236][ T1168] register_netdevice+0xa7c/0x1094 [ 153.091495][ T1168] register_netdev+0x24/0x4c [ 153.091735][ T1168] loopback_net_init+0x6c/0x124 [ 153.092010][ T1168] ops_init+0x8c/0x46c [ 153.092260][ T1168] setup_net+0x638/0xbec [ 153.092534][ T1168] copy_net_ns+0x1fc/0x560 [ 153.092783][ T1168] create_new_namespaces+0x300/0x840 [ 153.093065][ T1168] unshare_nsproxy_namespaces+0x7c/0x174 [ 153.093342][ T1168] ksys_unshare+0x284/0x580 [ 153.093646][ T1168] __arm64_sys_unshare+0x30/0x50 [ 153.093964][ T1168] invoke_syscall+0x6c/0x260 VM DIAGNOSIS: 11:54:15 Registers: info registers vcpu 0 PC=0000ffff903d05cc X00=0000000000000000 X01=0000ffffdc24d158 X02=0000000000000050 X03=0000ffffdc24c9f8 X04=0000ffff90400000 X05=0000ffff903ff060 X06=0000ffff903d8f70 X07=0000ffff903df7d0 X08=0000ffff903cf0e0 X09=0000000000000000 X10=0000ffffdc24d140 X11=0000000000000001 X12=0000ffffdc24d2c8 X13=0000000000000001 X14=00000000000008ff X15=0000000000000001 X16=0000000000000000 X17=0000000000000064 X18=0000000000000001 X19=0000000000000000 X20=0000000000000000 X21=0000ffff903fe000 X22=0000ffff903ff000 X23=554f5f4755424544 X24=505f4e494749524f X25=0000000000400040 X26=5f454c49464f5250 X27=0000ffff903fe000 X28=5f5952415242494c X29=0000ffffdc24c900 X30=0000ffff903d0a5c SP=0000ffffdc24c900 PSTATE=20000000 --C- EL0t FPCR=00000000 FPSR=00000000 Q00=0000000000000000:0000000000000000 Q01=0000000000000000:0000000000000000 Q02=0000000000000000:0000000000000000 Q03=0000000000000000:0000000000000000 Q04=0000000000000000:0000000000000000 Q05=0000000000000000:0000000000000000 Q06=0000000000000000:0000000000000000 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=0000000000000000:0000000000000000 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff80000cb3b130 X00=ffff80000e3115f8 X01=0000000000000003 X02=0000000000000000 X03=1fffe000025aca21 X04=00000000f204f1f1 X05=ffff700002776e34 X06=dfff800000000000 X07=00000000f1f1f1f1 X08=ffff800013bb71e3 X09=dfff800000000000 X10=ffff700001c622bc X11=1ffff00001c622bc X12=ffff700001c622bd X13=0000000000000000 X14=1ffff00002776e12 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a959c00 X19=dfff800000000000 X20=0000000000000001 X21=ffff000012d65100 X22=0000000000000000 X23=ffff80000e311448 X24=ffff80000e21c000 X25=ffff800013bb7520 X26=00000000ffffffff X27=00000000000000c0 X28=ffff80000e21f000 X29=ffff800013bb72e0 X30=ffff8000082b0d18 SP=ffff800013bb73a0 PSTATE=600000c5 -ZC- EL1h FPCR=00000000 FPSR=00000000 Q00=0000000000000000:0000000000000000 Q01=3020312037312030:2030203020353736 Q02=3832353532353420:3020302030203020 Q03=0000000000000000:0000000000000000 Q04=0000000000000000:0000000000000000 Q05=0010000100000400:4000040040000000 Q06=0000000000000001:0010000100100001 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=0000000110011001:0001111111044440 Q18=0000000000000001:0010000100100001 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