syzkaller login: [ 117.098748][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.128957][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.158489][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:14515' (ECDSA) to the list of known hosts. 1970/01/01 00:02:51 fuzzer started 1970/01/01 00:02:55 connecting to host at localhost:33225 1970/01/01 00:02:55 checking machine... 1970/01/01 00:02:55 checking revisions... 1970/01/01 00:02:57 testing simple program... [ 178.565101][ T3063] cgroup: Unknown subsys name 'net' executing program [ 179.080335][ T3063] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 186.270425][ T3066] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 186.303488][ T3066] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 189.515739][ T3066] device hsr_slave_0 entered promiscuous mode [ 189.611086][ T3066] device hsr_slave_1 entered promiscuous mode executing program [ 191.601630][ T3066] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 191.686253][ T3066] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 191.781084][ T3066] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 191.939238][ T3066] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 194.144254][ T3066] 8021q: adding VLAN 0 to HW filter on device bond0 [ 194.347839][ T3064] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 194.370603][ T3064] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 195.909340][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 195.916136][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 195.971267][ T3064] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 195.978247][ T3064] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 196.018078][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 196.098145][ T3064] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 196.234182][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 196.248482][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 196.329552][ T3064] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 196.339311][ T3064] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 196.423363][ T3066] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 197.675244][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 197.677429][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 200.565884][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 200.591654][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 202.248836][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 202.259633][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 202.281424][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 202.295408][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 202.354045][ T3066] device veth0_vlan entered promiscuous mode [ 202.473882][ T3066] device veth1_vlan entered promiscuous mode executing program [ 202.817747][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 202.830510][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 202.901525][ T3066] device veth0_macvtap entered promiscuous mode [ 202.961384][ T3066] device veth1_macvtap entered promiscuous mode [ 203.221272][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 203.229756][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 203.254688][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 203.261127][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 203.330555][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 203.338964][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 203.411190][ T3066] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 203.422833][ T3066] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 203.423360][ T3066] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 203.423930][ T3066] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:03:25 building call list... executing program [ 206.210527][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 206.389495][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 206.576736][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 206.969788][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 210.593187][ T9] device hsr_slave_0 left promiscuous mode [ 210.645284][ T9] device hsr_slave_1 left promiscuous mode [ 210.901380][ T9] device veth1_macvtap left promiscuous mode [ 210.904742][ T9] device veth0_macvtap left promiscuous mode [ 210.920533][ T9] device veth1_vlan left promiscuous mode [ 210.955481][ T9] device veth0_vlan left promiscuous mode executing program [ 214.563973][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 214.714688][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface executing program [ 215.484089][ T9] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 227.143716][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 227.145349][ T9] leaked reference. [ 227.146192][ T9] ipv6_add_dev+0x300/0xeec [ 227.148263][ T9] addrconf_notify+0x3ac/0x1080 [ 227.148921][ T9] notifier_call_chain+0xc0/0x180 [ 227.149322][ T9] raw_notifier_call_chain+0x18/0x24 [ 227.149866][ T9] call_netdevice_notifiers_info+0x80/0xe0 [ 227.150272][ T9] register_netdevice+0xa7c/0x1094 [ 227.150692][ T9] register_netdev+0x24/0x4c [ 227.151060][ T9] loopback_net_init+0x6c/0x124 [ 227.151455][ T9] ops_init+0x8c/0x46c [ 227.151872][ T9] setup_net+0x638/0xbec [ 227.152517][ T9] copy_net_ns+0x1fc/0x560 [ 227.152891][ T9] create_new_namespaces+0x300/0x840 [ 227.153333][ T9] unshare_nsproxy_namespaces+0x7c/0x174 [ 227.153730][ T9] ksys_unshare+0x284/0x580 [ 227.154110][ T9] __arm64_sys_unshare+0x30/0x50 [ 227.154591][ T9] invoke_syscall+0x6c/0x260 [ 228.821378][ T3062] can: request_module (can-proto-0) failed. [ 229.228477][ T3062] can: request_module (can-proto-0) failed. [ 229.543506][ T3062] can: request_module (can-proto-0) failed. executing program executing program executing program [ 237.253888][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 237.254736][ T9] leaked reference. [ 237.255089][ T9] ipv6_add_dev+0x300/0xeec [ 237.255556][ T9] addrconf_notify+0x3ac/0x1080 [ 237.255950][ T9] notifier_call_chain+0xc0/0x180 [ 237.256351][ T9] raw_notifier_call_chain+0x18/0x24 [ 237.256758][ T9] call_netdevice_notifiers_info+0x80/0xe0 [ 237.257168][ T9] register_netdevice+0xa7c/0x1094 [ 237.257577][ T9] register_netdev+0x24/0x4c [ 237.257965][ T9] loopback_net_init+0x6c/0x124 [ 237.258367][ T9] ops_init+0x8c/0x46c [ 237.258781][ T9] setup_net+0x638/0xbec [ 237.259183][ T9] copy_net_ns+0x1fc/0x560 [ 237.259560][ T9] create_new_namespaces+0x300/0x840 [ 237.259977][ T9] unshare_nsproxy_namespaces+0x7c/0x174 [ 237.260379][ T9] ksys_unshare+0x284/0x580 [ 237.260773][ T9] __arm64_sys_unshare+0x30/0x50 [ 237.261156][ T9] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 247.633546][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 247.634307][ T9] leaked reference. [ 247.634805][ T9] ipv6_add_dev+0x300/0xeec [ 247.635256][ T9] addrconf_notify+0x3ac/0x1080 [ 247.635650][ T9] notifier_call_chain+0xc0/0x180 [ 247.637647][ T9] raw_notifier_call_chain+0x18/0x24 [ 247.639035][ T9] call_netdevice_notifiers_info+0x80/0xe0 [ 247.639967][ T9] register_netdevice+0xa7c/0x1094 [ 247.640236][ T9] register_netdev+0x24/0x4c [ 247.640506][ T9] loopback_net_init+0x6c/0x124 [ 247.640889][ T9] ops_init+0x8c/0x46c [ 247.641287][ T9] setup_net+0x638/0xbec [ 247.641728][ T9] copy_net_ns+0x1fc/0x560 [ 247.642288][ T9] create_new_namespaces+0x300/0x840 [ 247.642900][ T9] unshare_nsproxy_namespaces+0x7c/0x174 [ 247.643431][ T9] ksys_unshare+0x284/0x580 [ 247.643865][ T9] __arm64_sys_unshare+0x30/0x50 [ 247.644302][ T9] invoke_syscall+0x6c/0x260 executing program [ 249.255477][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 249.274273][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 249.288197][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 249.298704][ T2903] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 02:31:48 Registers: info registers vcpu 0 PC=ffff8000097cca9c X00=0000000000000002 X01=ffff000009eac080 X02=0000000000000000 X03=0000000000000002 X04=dfff800000000000 X05=0000000000000000 X06=0000000000000001 X07=0000000000000004 X08=ffff800011017173 X09=dfff800000000000 X10=ffff700002202e2e X11=1ffff00002202e2e X12=ffff700002202e2f X13=0000000000000000 X14=1ffff00002202e04 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a93ac00 X19=000000000000005d X20=ffff800010f3d000 X21=ffff80000e951280 X22=ffff000009eac080 X23=dfff800000000000 X24=ffff800010c007d1 X25=0000000000000005 X26=ffff000009eac080 X27=dfff800000000000 X28=0000000000000031 X29=ffff800011017120 X30=ffff8000097ccab0 SP=ffff800011017120 PSTATE=800000c5 N--- EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:0000000000000000 Q01=0000000000000000:412afbb000000000 Q02=0000000000000000:3ff342b12bb49c41 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=0000000000000010:0000002744305dc0 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000082ab000 X00=0000000000000001 X01=0000000000000000 X02=0000000000000000 X03=dfff800000000000 X04=00000000ba0381d1 X05=0000000000000000 X06=00000000f3f3f3f3 X07=1fffe000021f0812 X08=ffff000010f84090 X09=00000000000000a0 X10=ffff000010f83fb4 X11=0000000000000007 X12=1fffe000021f07f6 X13=1fffe000021f0812 X14=1ffff00002600ec2 X15=ffff00006a959bc8 X16=ffff800010f48000 X17=ffff80005c792000 X18=ffff00006a959c00 X19=1ffff00002600ee0 X20=ffff80000e1c7c88 X21=ffff80000e1c7c88 X22=0000000000000000 X23=0000000000000001 X24=ffff000010f84808 X25=ffff80000e21fb7c X26=ffff800010348840 X27=ffff80000e21f000 X28=0000000000000001 X29=ffff8000130074d0 X30=ffff8000082aaa54 SP=ffff8000130074d0 PSTATE=600000c5 -ZC- EL1h 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