syzkaller login: [ 83.721773][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 83.739704][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 87.869301][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:1037' (ECDSA) to the list of known hosts. 1970/01/01 00:01:57 fuzzer started 1970/01/01 00:02:01 connecting to host at localhost:33823 1970/01/01 00:02:01 checking machine... 1970/01/01 00:02:01 checking revisions... 1970/01/01 00:02:03 testing simple program... [ 124.103757][ T3062] cgroup: Unknown subsys name 'net' [ 124.582248][ T3062] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 130.381129][ T3065] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 130.414838][ T3065] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 133.276546][ T3065] device hsr_slave_0 entered promiscuous mode [ 133.338969][ T3065] device hsr_slave_1 entered promiscuous mode executing program [ 134.984477][ T3065] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 135.058900][ T3065] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 135.185430][ T3065] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 135.268014][ T3065] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 136.798308][ T3065] 8021q: adding VLAN 0 to HW filter on device bond0 [ 136.891552][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 136.916400][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 138.164890][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 138.170893][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 138.261446][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 138.296452][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 138.366955][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 138.430099][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 138.540692][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 138.550002][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 138.609026][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 138.616965][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 138.666775][ T3065] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 139.440517][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 139.442002][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 141.850905][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 141.856902][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 143.256392][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 143.278048][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 143.308948][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 143.316244][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 143.368073][ T3065] device veth0_vlan entered promiscuous mode [ 143.454618][ T3065] device veth1_vlan entered promiscuous mode [ 143.649774][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 143.666369][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 143.720647][ T3065] device veth0_macvtap entered promiscuous mode [ 143.786279][ T3065] device veth1_macvtap entered promiscuous mode [ 143.920319][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 143.930264][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 143.939376][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 143.949203][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 144.018707][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 144.025604][ T3383] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 144.081265][ T3065] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 144.088497][ T3065] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 144.089233][ T3065] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 144.089833][ T3065] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:02:25 building call list... executing program [ 146.036233][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 146.446154][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 146.695727][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 146.966717][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 149.618440][ T9] device hsr_slave_0 left promiscuous mode [ 149.667492][ T9] device hsr_slave_1 left promiscuous mode [ 149.896990][ T9] device veth1_macvtap left promiscuous mode [ 149.898330][ T9] device veth0_macvtap left promiscuous mode [ 149.899684][ T9] device veth1_vlan left promiscuous mode [ 149.900928][ T9] device veth0_vlan left promiscuous mode executing program [ 152.515585][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 152.686143][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 153.632154][ T9] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 165.254849][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 165.256188][ T9] leaked reference. [ 165.257286][ T9] ipv6_add_dev+0x300/0xeec [ 165.258337][ T9] addrconf_notify+0x3ac/0x1080 [ 165.259194][ T9] notifier_call_chain+0xc0/0x180 [ 165.259661][ T9] raw_notifier_call_chain+0x18/0x24 [ 165.260225][ T9] call_netdevice_notifiers_info+0x80/0xe0 [ 165.260841][ T9] register_netdevice+0xa7c/0x1094 [ 165.261262][ T9] register_netdev+0x24/0x4c [ 165.261876][ T9] loopback_net_init+0x6c/0x124 [ 165.262548][ T9] ops_init+0x8c/0x46c [ 165.262994][ T9] setup_net+0x638/0xbec [ 165.263467][ T9] copy_net_ns+0x1fc/0x560 [ 165.263857][ T9] create_new_namespaces+0x300/0x840 [ 165.264481][ T9] unshare_nsproxy_namespaces+0x7c/0x174 [ 165.264989][ T9] ksys_unshare+0x284/0x580 [ 165.265535][ T9] __arm64_sys_unshare+0x30/0x50 [ 165.266177][ T9] invoke_syscall+0x6c/0x260 executing program [ 167.160805][ T3061] can: request_module (can-proto-0) failed. [ 167.458456][ T3061] can: request_module (can-proto-0) failed. [ 167.761745][ T3061] can: request_module (can-proto-0) failed. executing program executing program [ 175.593730][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 175.594451][ T9] leaked reference. [ 175.594788][ T9] ipv6_add_dev+0x300/0xeec [ 175.595224][ T9] addrconf_notify+0x3ac/0x1080 [ 175.595591][ T9] notifier_call_chain+0xc0/0x180 [ 175.595966][ T9] raw_notifier_call_chain+0x18/0x24 [ 175.596341][ T9] call_netdevice_notifiers_info+0x80/0xe0 [ 175.596740][ T9] register_netdevice+0xa7c/0x1094 [ 175.597114][ T9] register_netdev+0x24/0x4c [ 175.597491][ T9] loopback_net_init+0x6c/0x124 [ 175.597894][ T9] ops_init+0x8c/0x46c [ 175.598254][ T9] setup_net+0x638/0xbec [ 175.598602][ T9] copy_net_ns+0x1fc/0x560 [ 175.598957][ T9] create_new_namespaces+0x300/0x840 [ 175.599344][ T9] unshare_nsproxy_namespaces+0x7c/0x174 [ 175.599725][ T9] ksys_unshare+0x284/0x580 [ 175.600083][ T9] __arm64_sys_unshare+0x30/0x50 [ 175.600452][ T9] invoke_syscall+0x6c/0x260 executing program [ 176.301126][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 176.318456][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program executing program [ 182.814750][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 182.820101][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 185.853992][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 185.854621][ T9] leaked reference. [ 185.854898][ T9] ipv6_add_dev+0x300/0xeec [ 185.855232][ T9] addrconf_notify+0x3ac/0x1080 [ 185.855533][ T9] notifier_call_chain+0xc0/0x180 [ 185.855843][ T9] raw_notifier_call_chain+0x18/0x24 [ 185.856147][ T9] call_netdevice_notifiers_info+0x80/0xe0 [ 185.856472][ T9] register_netdevice+0xa7c/0x1094 [ 185.856772][ T9] register_netdev+0x24/0x4c [ 185.857068][ T9] loopback_net_init+0x6c/0x124 [ 185.857376][ T9] ops_init+0x8c/0x46c [ 185.857677][ T9] setup_net+0x638/0xbec [ 185.857969][ T9] copy_net_ns+0x1fc/0x560 [ 185.858258][ T9] create_new_namespaces+0x300/0x840 [ 185.858564][ T9] unshare_nsproxy_namespaces+0x7c/0x174 [ 185.858876][ T9] ksys_unshare+0x284/0x580 [ 185.859173][ T9] __arm64_sys_unshare+0x30/0x50 [ 185.859469][ T9] invoke_syscall+0x6c/0x260 VM DIAGNOSIS: 00:40:57 Registers: info registers vcpu 0 PC=ffff800008013168 X00=0000000000000000 X01=0000000000000000 X02=0000000000000000 X03=0000000000000000 X04=00000000000003e8 X05=0000000000004e20 X06=00000000000000a5 X07=0000000000008064 X08=0000000000000065 X09=0000000000008064 X10=0000000000000017 X11=00004c4b40000000 X12=00000002724d1b06 X13=000000007fffffff X14=0000000000000000 X15=0000000000000000 X16=000000400005df18 X17=0000000001b1d160 X18=0000000000000000 X19=0000ffffb6141000 X20=000000400005def0 X21=000000400004e000 X22=0000004000050000 X23=0000000000000000 X24=0000000000000000 X25=0000000000000000 X26=000000400005dd90 X27=0000000000002710 X28=00000040000004e0 X29=000000400005dee8 X30=0000000000055de8 SP=ffff800011488000 PSTATE=400003c5 -Z-- EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:0000000000000000 Q01=0000000000000000:412f757000000000 Q02=0000000000000000:4001e4f66d0b2adb 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=0000000000000010:0000001b0cf7d6b0 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000097cbb60 X00=0000000000000002 X01=0000000000000002 X02=ffff000009eb9172 X03=dfff800000000000 X04=1fffe000013d722e 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=ffff00006a959c00 X19=ffff000009eb9080 X20=ffff800010f3d018 X21=ffff80000e951240 X22=ffff000009eb9080 X23=dfff800000000000 X24=ffff800010c007d5 X25=0000000000000001 X26=ffff000009eb9080 X27=dfff800000000000 X28=0000000000000035 X29=ffff800011017120 X30=ffff8000097cceec SP=ffff800011017120 PSTATE=800000c5 N--- EL1h FPCR=00000000 FPSR=00000000 Q00=2525252525252525:2525252525252525 Q01=252f7325006c6c61:00736d5f656d6974 Q02=63615000676e6964:726177726f662f73 Q03=00000000ff000000:ff00000000000000 Q04=000000ff00000000:0000000000000000 Q05=4000000140000000:4000000000000000 Q06=0000000100000000:0000000000000000 Q07=4010040140100401:4010040140100401 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=0100000041404000:0100000041404000 Q17=a008a008200aa000:a8a82aa000000000 Q18=8020080080200800:0020080280200000 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