syzkaller login: [ 116.209522][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 116.223095][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 116.229393][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:45903' (ECDSA) to the list of known hosts. 1970/01/01 00:02:26 fuzzer started 1970/01/01 00:02:30 connecting to host at localhost:37097 1970/01/01 00:02:31 checking machine... 1970/01/01 00:02:31 checking revisions... 1970/01/01 00:02:34 testing simple program... executing program [ 155.125839][ T3063] cgroup: Unknown subsys name 'net' [ 155.709940][ T3063] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 163.467185][ T3065] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 163.517900][ T3065] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program executing program [ 167.355264][ T3065] device hsr_slave_0 entered promiscuous mode [ 167.411523][ T3065] device hsr_slave_1 entered promiscuous mode [ 169.433898][ T3065] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 169.530264][ T3065] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 169.655740][ T3065] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 169.768773][ T3065] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 172.055698][ T3065] 8021q: adding VLAN 0 to HW filter on device bond0 [ 172.190894][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 172.210533][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 173.784581][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 173.796028][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 173.875125][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 173.891543][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 173.950194][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 174.037813][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 174.191003][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 174.198024][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 174.286655][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 174.299207][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 174.360318][ T3065] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 175.594213][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 175.597959][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 178.818964][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 178.835682][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 180.398585][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 180.420731][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 180.437471][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 180.448660][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 180.491084][ T3065] device veth0_vlan entered promiscuous mode [ 180.628852][ T3065] device veth1_vlan entered promiscuous mode [ 180.909082][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 180.924777][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 180.980000][ T3065] device veth0_macvtap entered promiscuous mode [ 181.048083][ T3065] device veth1_macvtap entered promiscuous mode [ 181.221647][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 181.231202][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 181.240242][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 181.250373][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 181.351408][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 181.361663][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 181.504563][ T3065] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 181.506216][ T3065] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 181.506909][ T3065] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 181.507552][ T3065] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:03:02 building call list... [ 183.808962][ T1914] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 184.107307][ T1914] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 184.360073][ T1914] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 184.633464][ T1914] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program executing program [ 188.133941][ T1914] device hsr_slave_0 left promiscuous mode [ 188.196318][ T1914] device hsr_slave_1 left promiscuous mode [ 188.430254][ T1914] device veth1_macvtap left promiscuous mode [ 188.445022][ T1914] device veth0_macvtap left promiscuous mode [ 188.459798][ T1914] device veth1_vlan left promiscuous mode [ 188.477689][ T1914] device veth0_vlan left promiscuous mode executing program [ 192.591506][ T1914] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 192.739848][ T1914] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 193.480547][ T1914] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 205.655519][ T1914] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 205.657288][ T1914] leaked reference. [ 205.658242][ T1914] ipv6_add_dev+0x300/0xeec [ 205.659458][ T1914] addrconf_notify+0x3ac/0x1080 [ 205.660226][ T1914] notifier_call_chain+0xc0/0x180 [ 205.660651][ T1914] raw_notifier_call_chain+0x18/0x24 [ 205.661084][ T1914] call_netdevice_notifiers_info+0x80/0xe0 [ 205.661530][ T1914] register_netdevice+0xa7c/0x1094 [ 205.662090][ T1914] register_netdev+0x24/0x4c [ 205.662683][ T1914] loopback_net_init+0x6c/0x124 [ 205.663133][ T1914] ops_init+0x8c/0x46c [ 205.663538][ T1914] setup_net+0x638/0xbec [ 205.663949][ T1914] copy_net_ns+0x1fc/0x560 [ 205.664373][ T1914] create_new_namespaces+0x300/0x840 [ 205.664851][ T1914] unshare_nsproxy_namespaces+0x7c/0x174 [ 205.665259][ T1914] ksys_unshare+0x284/0x580 [ 205.665668][ T1914] __arm64_sys_unshare+0x30/0x50 [ 205.666121][ T1914] invoke_syscall+0x6c/0x260 executing program [ 207.401379][ T3059] can: request_module (can-proto-0) failed. [ 207.805006][ T3059] can: request_module (can-proto-0) failed. [ 208.090552][ T3059] can: request_module (can-proto-0) failed. executing program executing program executing program [ 215.884957][ T1914] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 215.886921][ T1914] leaked reference. [ 215.887431][ T1914] ipv6_add_dev+0x300/0xeec [ 215.887928][ T1914] addrconf_notify+0x3ac/0x1080 [ 215.888362][ T1914] notifier_call_chain+0xc0/0x180 [ 215.888799][ T1914] raw_notifier_call_chain+0x18/0x24 [ 215.889236][ T1914] call_netdevice_notifiers_info+0x80/0xe0 [ 215.889683][ T1914] register_netdevice+0xa7c/0x1094 [ 215.890141][ T1914] register_netdev+0x24/0x4c [ 215.890612][ T1914] loopback_net_init+0x6c/0x124 [ 215.891075][ T1914] ops_init+0x8c/0x46c [ 215.891502][ T1914] setup_net+0x638/0xbec [ 215.893555][ T1914] copy_net_ns+0x1fc/0x560 [ 215.894139][ T1914] create_new_namespaces+0x300/0x840 [ 215.894611][ T1914] unshare_nsproxy_namespaces+0x7c/0x174 [ 215.895027][ T1914] ksys_unshare+0x284/0x580 [ 215.895441][ T1914] __arm64_sys_unshare+0x30/0x50 [ 215.895851][ T1914] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 226.034204][ T1914] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 226.037827][ T1914] leaked reference. [ 226.038703][ T1914] ipv6_add_dev+0x300/0xeec [ 226.040459][ T1914] addrconf_notify+0x3ac/0x1080 [ 226.041997][ T1914] notifier_call_chain+0xc0/0x180 [ 226.043546][ T1914] raw_notifier_call_chain+0x18/0x24 [ 226.045175][ T1914] call_netdevice_notifiers_info+0x80/0xe0 [ 226.046568][ T1914] register_netdevice+0xa7c/0x1094 [ 226.047933][ T1914] register_netdev+0x24/0x4c [ 226.048920][ T1914] loopback_net_init+0x6c/0x124 [ 226.049983][ T1914] ops_init+0x8c/0x46c [ 226.050335][ T1914] setup_net+0x638/0xbec [ 226.050654][ T1914] copy_net_ns+0x1fc/0x560 [ 226.050977][ T1914] create_new_namespaces+0x300/0x840 [ 226.051334][ T1914] unshare_nsproxy_namespaces+0x7c/0x174 [ 226.051773][ T1914] ksys_unshare+0x284/0x580 [ 226.052110][ T1914] __arm64_sys_unshare+0x30/0x50 [ 226.052525][ T1914] invoke_syscall+0x6c/0x260 executing program [ 229.968605][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program [ 229.993271][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 229.997473][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 230.001724][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 18:13:38 Registers: info registers vcpu 0 PC=ffff8000097cca9c X00=0000000000000002 X01=ffff000009ea4080 X02=0000000000000000 X03=0000000000000002 X04=dfff800000000000 X05=0000000000000000 X06=0000000000000001 X07=0000000000000004 X08=ffff800018eb7173 X09=dfff800000000000 X10=ffff7000031d6e2e X11=1ffff000031d6e2e X12=ffff7000031d6e2f X13=0000000000000000 X14=1ffff000031d6e04 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a93ac00 X19=0000000000000061 X20=ffff800010f3d000 X21=ffff80000e951280 X22=ffff000009ea4080 X23=dfff800000000000 X24=ffff800010c007d1 X25=0000000000000005 X26=ffff000009ea4080 X27=dfff800000000000 X28=0000000000000031 X29=ffff800018eb7120 X30=ffff8000097ccab0 SP=ffff800018eb7120 PSTATE=800000c5 N--- EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:0000000000000004 Q01=0000000000000000:414fffffe0000000 Q02=a6cce897ff657547:3b029d1cea1e5fbe 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=0000000000000010:0000002172042130 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000082aaabc X00=fffffc0001a782c0 X01=0000000000000003 X02=0000000000000000 X03=1ffff000024aaf0b X04=1ffff000024aaf0a X05=0000000000000000 X06=ffff800008857f54 X07=ffff000010b2d100 X08=ffff80000e21cd50 X09=ffff80000e21c000 X10=00000000f3000000 X11=dfff800000000000 X12=1fffe00002165b56 X13=0000000000000000 X14=1ffff000024aaeea X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=0000000000000001 X20=1ffff000024aaf0c X21=ffff80000e3ff8a0 X22=0000000000000000 X23=ffff0000096067f0 X24=00000000000000c0 X25=0000000000000005 X26=ffff0000112c5700 X27=ffff00001565a390 X28=ffff80000e21f000 X29=ffff800012557760 X30=ffff800008494df0 SP=ffff8000125577f0 PSTATE=600000c5 -ZC- EL1h FPCR=00000000 FPSR=00000000 Q00=0000000000000000:0000000000000000 Q01=66702d74656e002d:2d00712d0065626f Q02=3d4d524554002f3d:454d4f480031332d Q03=0020008000082080:0020008000082080 Q04=0000000000200000:0000000080000000 Q05=0004000000000000:0004000000000000 Q06=0000000000000400:0000000000000000 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=00ff00ff00ffffff:00ff00ff00ffffff Q18=0000000080000000:0000000000000800 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