syzkaller login: [ 118.175400][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.192533][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.218164][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.222756][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:13714' (ECDSA) to the list of known hosts. 1970/01/01 00:02:20 fuzzer started 1970/01/01 00:02:24 connecting to host at localhost:44217 1970/01/01 00:02:24 checking machine... 1970/01/01 00:02:24 checking revisions... 1970/01/01 00:02:27 testing simple program... [ 148.023784][ T3071] cgroup: Unknown subsys name 'net' executing program [ 148.598872][ T3071] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 155.969269][ T3075] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 156.023229][ T3075] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 159.331847][ T3075] device hsr_slave_0 entered promiscuous mode [ 159.403908][ T3075] device hsr_slave_1 entered promiscuous mode executing program [ 161.534387][ T3075] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 161.625439][ T3075] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 161.711686][ T3075] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 161.814293][ T3075] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 164.614932][ T3075] 8021q: adding VLAN 0 to HW filter on device bond0 [ 164.761302][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 164.792408][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 166.414995][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 166.424904][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 166.489826][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 166.502161][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 166.622871][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 166.708986][ T895] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 166.924057][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 166.933326][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 167.052779][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 167.063653][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 167.133159][ T3075] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 168.562265][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 168.564352][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 171.970550][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 172.000939][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 173.669748][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 173.675300][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 173.715488][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 173.735140][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 173.755106][ T3075] device veth0_vlan entered promiscuous mode [ 173.879420][ T3075] device veth1_vlan entered promiscuous mode [ 174.137117][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 174.144082][ T3072] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 174.203710][ T3075] device veth0_macvtap entered promiscuous mode [ 174.254292][ T3075] device veth1_macvtap entered promiscuous mode [ 174.388972][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 174.403685][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 174.418227][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 174.443178][ T24] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 174.545461][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 174.555362][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 174.663414][ T3075] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 174.665037][ T3075] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 174.667438][ T3075] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 174.668196][ T3075] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:02:56 building call list... [ 177.304162][ T51] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 177.691514][ T51] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 177.970630][ T51] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 178.272395][ T51] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 181.669192][ T51] device hsr_slave_0 left promiscuous mode [ 181.730248][ T51] device hsr_slave_1 left promiscuous mode [ 182.070187][ T51] device veth1_macvtap left promiscuous mode [ 182.072679][ T51] device veth0_macvtap left promiscuous mode [ 182.088060][ T51] device veth1_vlan left promiscuous mode [ 182.090727][ T51] device veth0_vlan left promiscuous mode executing program [ 186.332948][ T51] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 186.538320][ T51] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface executing program [ 187.415332][ T51] bond0 (unregistering): Released all slaves executing program executing program executing program [ 198.573432][ T3065] can: request_module (can-proto-0) failed. [ 198.942122][ T3065] can: request_module (can-proto-0) failed. executing program [ 199.195014][ T3065] can: request_module (can-proto-0) failed. [ 199.197457][ T51] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 199.200092][ T51] leaked reference. [ 199.201097][ T51] ipv6_add_dev+0x300/0xeec [ 199.202578][ T51] addrconf_notify+0x3ac/0x1080 [ 199.203259][ T51] notifier_call_chain+0xc0/0x180 [ 199.203800][ T51] raw_notifier_call_chain+0x18/0x24 [ 199.204238][ T51] call_netdevice_notifiers_info+0x80/0xe0 [ 199.204722][ T51] register_netdevice+0xa7c/0x1094 [ 199.205224][ T51] register_netdev+0x24/0x4c [ 199.205721][ T51] loopback_net_init+0x6c/0x124 [ 199.206387][ T51] ops_init+0x8c/0x46c [ 199.206826][ T51] setup_net+0x638/0xbec [ 199.207333][ T51] copy_net_ns+0x1fc/0x560 [ 199.207855][ T51] create_new_namespaces+0x300/0x840 [ 199.208261][ T51] unshare_nsproxy_namespaces+0x7c/0x174 [ 199.208677][ T51] ksys_unshare+0x284/0x580 [ 199.209096][ T51] __arm64_sys_unshare+0x30/0x50 [ 199.209520][ T51] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 209.368739][ T51] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 209.369649][ T51] leaked reference. [ 209.370031][ T51] ipv6_add_dev+0x300/0xeec [ 209.370492][ T51] addrconf_notify+0x3ac/0x1080 [ 209.370968][ T51] notifier_call_chain+0xc0/0x180 [ 209.371428][ T51] raw_notifier_call_chain+0x18/0x24 [ 209.371917][ T51] call_netdevice_notifiers_info+0x80/0xe0 [ 209.372397][ T51] register_netdevice+0xa7c/0x1094 [ 209.372877][ T51] register_netdev+0x24/0x4c [ 209.373320][ T51] loopback_net_init+0x6c/0x124 [ 209.374187][ T51] ops_init+0x8c/0x46c [ 209.375355][ T51] setup_net+0x638/0xbec [ 209.377244][ T51] copy_net_ns+0x1fc/0x560 [ 209.379141][ T51] create_new_namespaces+0x300/0x840 [ 209.381161][ T51] unshare_nsproxy_namespaces+0x7c/0x174 [ 209.382730][ T51] ksys_unshare+0x284/0x580 [ 209.383890][ T51] __arm64_sys_unshare+0x30/0x50 [ 209.384454][ T51] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 219.478395][ T51] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 219.480727][ T51] leaked reference. [ 219.481889][ T51] ipv6_add_dev+0x300/0xeec [ 219.483127][ T51] addrconf_notify+0x3ac/0x1080 [ 219.484380][ T51] notifier_call_chain+0xc0/0x180 [ 219.484881][ T51] raw_notifier_call_chain+0x18/0x24 [ 219.485389][ T51] call_netdevice_notifiers_info+0x80/0xe0 [ 219.487104][ T51] register_netdevice+0xa7c/0x1094 [ 219.489168][ T51] register_netdev+0x24/0x4c [ 219.490549][ T51] loopback_net_init+0x6c/0x124 [ 219.491396][ T51] ops_init+0x8c/0x46c [ 219.491844][ T51] setup_net+0x638/0xbec [ 219.492249][ T51] copy_net_ns+0x1fc/0x560 [ 219.492602][ T51] create_new_namespaces+0x300/0x840 [ 219.492995][ T51] unshare_nsproxy_namespaces+0x7c/0x174 [ 219.493333][ T51] ksys_unshare+0x284/0x580 [ 219.494414][ T51] __arm64_sys_unshare+0x30/0x50 [ 219.494775][ T51] invoke_syscall+0x6c/0x260 executing program [ 221.070900][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 221.093340][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 221.122568][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 221.142276][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 18:13:31 Registers: info registers vcpu 0 PC=ffff8000097cb710 X00=0000000000000002 X01=0000000000000002 X02=ffff000009e7b172 X03=dfff800000000000 X04=1fffe000013cf62e X05=0000000000000000 X06=0000000000000001 X07=0000000000000004 X08=ffff8000113c7173 X09=dfff800000000000 X10=ffff700002278e2e X11=1ffff00002278e2e X12=ffff700002278e2f X13=0000000000000000 X14=1ffff00002278e04 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a93ac00 X19=ffff000009e7b080 X20=ffff800010f3d018 X21=ffff80000e951280 X22=ffff000009e7b080 X23=dfff800000000000 X24=ffff800010c007d1 X25=0000000000000000 X26=ffff000009e7b080 X27=dfff800000000000 X28=0000000000000031 X29=ffff8000113c7120 X30=ffff8000097cca9c SP=ffff8000113c7120 PSTATE=800000c5 N--- EL1h FPCR=00000000 FPSR=00000000 Q00=2f2f2f2f2f2f2f2f:2f2f2f2f2f2f2f2f Q01=2e6f732e6362696c:0036317465675f73 Q02=6f6972705f746567:5f64656863730036 Q03=0000000000000000:8000000000000000 Q04=0000000000000000:0000000000000800 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=0000000000000008:0000000800008000 Q18=0000000000000000:0000000000000800 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 info registers vcpu 1 PC=ffff80000c6cadec X00=0000000000000000 X01=0000000000000003 X02=1fffe00001b822a2 X03=0000000000000001 X04=ffff70000229aeec X05=00000000f2f2f200 X06=00000000f3f3f3f3 X07=1fffe000026644a3 X08=ffff000013322518 X09=ffff80000f85c9c0 X10=ffff600001b82213 X11=1fffe00001b82213 X12=ffff600001b82214 X13=0000000000000000 X14=1ffff0000229aefc X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=ffff00000dc11000 X20=0000000000000007 X21=ffff000011a2da00 X22=ffff00000dc11514 X23=ffff00000dc1153c X24=1fffe00002345b43 X25=1fffe00001b822a7 X26=ffff80000f671c60 X27=1fffe00001b822a2 X28=ffff80000f671c60 X29=ffff8000114d79c0 X30=ffff80000c6cabb0 SP=ffff8000114d79c0 PSTATE=10000005 ---V EL1h FPCR=00000000 FPSR=00000010 Q00=21d37dcd02f2f534:ecd36202ea0a0b04 Q01=692474656b636f73:6d61657274735f66 Q02=bdeeb81e114d7d7a:604dca12a8d8f643 Q03=0000000000000001:0000000000100000 Q04=0000000000100000:0000000000000000 Q05=4010040140100401:4010040140100401 Q06=0010000000010010:0010000000010010 Q07=0000000000000000:3feaaaaaaaaaaaab Q08=0000000000000000:3fcafe05374eda3c Q09=0000000000000000:3fe23c40960ba18f Q10=0000000000000000:3fe0000000000000 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=0000000000000006:000000005d8b2525 Q31=0000000000000000:0000000000000000