syzkaller login: [ 109.931876][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 109.948954][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 109.956040][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:10590' (ECDSA) to the list of known hosts. 1970/01/01 00:02:33 fuzzer started 1970/01/01 00:02:37 connecting to host at localhost:43393 1970/01/01 00:02:37 checking machine... 1970/01/01 00:02:37 checking revisions... 1970/01/01 00:02:39 testing simple program... [ 160.188894][ T3063] cgroup: Unknown subsys name 'net' executing program [ 160.701827][ T3063] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 167.604107][ T3067] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 167.633583][ T3067] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 170.635614][ T3067] device hsr_slave_0 entered promiscuous mode [ 170.704320][ T3067] device hsr_slave_1 entered promiscuous mode [ 172.592958][ T3067] netdevsim netdevsim0 netdevsim0: renamed from eth0 executing program [ 172.685473][ T3067] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 172.755172][ T3067] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 172.823351][ T3067] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 175.166582][ T3067] 8021q: adding VLAN 0 to HW filter on device bond0 [ 175.265636][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 175.283387][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 176.585414][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 176.602242][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 176.655976][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 176.665127][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 176.742438][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 176.809304][ T2836] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 176.976805][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 176.984359][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 177.050426][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 177.056613][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 177.129549][ T3067] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 178.251461][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 178.253725][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 181.082434][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 181.103257][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 182.625924][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 182.646549][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 182.673782][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 182.686069][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 182.710816][ T3067] device veth0_vlan entered promiscuous mode [ 182.833427][ T3067] device veth1_vlan entered promiscuous mode [ 183.122799][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 183.133086][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 183.194970][ T3067] device veth0_macvtap entered promiscuous mode [ 183.244080][ T3067] device veth1_macvtap entered promiscuous mode [ 183.435666][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 183.463760][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 183.480480][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 183.495303][ T894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 183.554567][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 183.563574][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 183.617395][ T3067] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 183.626053][ T3067] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 183.626704][ T3067] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 183.627154][ T3067] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:03:05 building call list... [ 185.981711][ T27] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 186.243706][ T27] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 186.481537][ T27] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 186.696291][ T27] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 190.214419][ T27] device hsr_slave_0 left promiscuous mode [ 190.273917][ T27] device hsr_slave_1 left promiscuous mode [ 190.583649][ T27] device veth1_macvtap left promiscuous mode [ 190.585444][ T27] device veth0_macvtap left promiscuous mode [ 190.602437][ T27] device veth1_vlan left promiscuous mode [ 190.605210][ T27] device veth0_vlan left promiscuous mode executing program executing program [ 193.752209][ T27] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 193.878798][ T27] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 194.504072][ T27] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 206.390483][ T27] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 206.395374][ T27] leaked reference. [ 206.398411][ T27] ipv6_add_dev+0x300/0xeec [ 206.400593][ T27] addrconf_notify+0x3ac/0x1080 [ 206.402736][ T27] notifier_call_chain+0xc0/0x180 [ 206.403958][ T27] raw_notifier_call_chain+0x18/0x24 [ 206.404461][ T27] call_netdevice_notifiers_info+0x80/0xe0 [ 206.404953][ T27] register_netdevice+0xa7c/0x1094 [ 206.405417][ T27] register_netdev+0x24/0x4c [ 206.406818][ T27] loopback_net_init+0x6c/0x124 [ 206.408360][ T27] ops_init+0x8c/0x46c [ 206.409411][ T27] setup_net+0x638/0xbec [ 206.409922][ T27] copy_net_ns+0x1fc/0x560 [ 206.410350][ T27] create_new_namespaces+0x300/0x840 [ 206.410764][ T27] unshare_nsproxy_namespaces+0x7c/0x174 [ 206.411205][ T27] ksys_unshare+0x284/0x580 [ 206.411638][ T27] __arm64_sys_unshare+0x30/0x50 [ 206.412043][ T27] invoke_syscall+0x6c/0x260 [ 206.909137][ T3060] can: request_module (can-proto-0) failed. [ 207.350835][ T3060] can: request_module (can-proto-0) failed. [ 207.660230][ T3060] can: request_module (can-proto-0) failed. executing program executing program executing program [ 216.560730][ T27] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 216.561948][ T27] leaked reference. [ 216.562441][ T27] ipv6_add_dev+0x300/0xeec [ 216.562982][ T27] addrconf_notify+0x3ac/0x1080 [ 216.563442][ T27] notifier_call_chain+0xc0/0x180 [ 216.563836][ T27] raw_notifier_call_chain+0x18/0x24 [ 216.564313][ T27] call_netdevice_notifiers_info+0x80/0xe0 [ 216.564738][ T27] register_netdevice+0xa7c/0x1094 [ 216.565154][ T27] register_netdev+0x24/0x4c [ 216.565609][ T27] loopback_net_init+0x6c/0x124 [ 216.566017][ T27] ops_init+0x8c/0x46c [ 216.566486][ T27] setup_net+0x638/0xbec [ 216.566871][ T27] copy_net_ns+0x1fc/0x560 [ 216.567245][ T27] create_new_namespaces+0x300/0x840 [ 216.567800][ T27] unshare_nsproxy_namespaces+0x7c/0x174 [ 216.568348][ T27] ksys_unshare+0x284/0x580 [ 216.568954][ T27] __arm64_sys_unshare+0x30/0x50 [ 216.570340][ T27] invoke_syscall+0x6c/0x260 executing program executing program executing program executing program [ 226.729010][ T27] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 226.729778][ T27] leaked reference. [ 226.730117][ T27] ipv6_add_dev+0x300/0xeec [ 226.730542][ T27] addrconf_notify+0x3ac/0x1080 [ 226.730895][ T27] notifier_call_chain+0xc0/0x180 [ 226.731251][ T27] raw_notifier_call_chain+0x18/0x24 [ 226.731596][ T27] call_netdevice_notifiers_info+0x80/0xe0 [ 226.731952][ T27] register_netdevice+0xa7c/0x1094 [ 226.732365][ T27] register_netdev+0x24/0x4c [ 226.732717][ T27] loopback_net_init+0x6c/0x124 [ 226.733146][ T27] ops_init+0x8c/0x46c [ 226.733542][ T27] setup_net+0x638/0xbec [ 226.733910][ T27] copy_net_ns+0x1fc/0x560 [ 226.734367][ T27] create_new_namespaces+0x300/0x840 [ 226.734794][ T27] unshare_nsproxy_namespaces+0x7c/0x174 [ 226.735187][ T27] ksys_unshare+0x284/0x580 [ 226.735597][ T27] __arm64_sys_unshare+0x30/0x50 [ 226.736006][ T27] invoke_syscall+0x6c/0x260 [ 229.701554][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 229.706766][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 229.717500][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 229.725111][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 18:02:50 Registers: info registers vcpu 0 PC=ffff8000082aa2f8 X00=ffff80005c773000 X01=0000000100000000 X02=0000000000000003 X03=1fffe000025da6c1 X04=1fffe0000d527001 X05=0000000000000000 X06=00000000f1f1f1f1 X07=1fffe000025da7fe X08=ffff000012ed3ff0 X09=0000000000000000 X10=ffff000012ed3fb4 X11=0000000000000007 X12=1fffe000025da7f6 X13=1fffe000025da7fe X14=1ffff000034d6f4c X15=0000000000001450 X16=0000000000001460 X17=0000000000000000 X18=0000000000000000 X19=0000000000000001 X20=1ffff000034d6f6e X21=ffff80000e3ff8a0 X22=0000000000000028 X23=ffff00000f361e48 X24=ffff80001a6b7bb0 X25=0000000000000001 X26=ffff6000025da6c5 X27=0000000000000007 X28=ffff000012ed3600 X29=ffff80001a6b7ab0 X30=ffff8000081fbae8 SP=ffff80001a6b7b00 PSTATE=700000c5 -ZCV EL1h FPCR=00000000 FPSR=00000000 Q00=0000000000000000:0000000000000000 Q01=001a001000000000:000061725f747065 Q02=0000000000000001:00080005000a000c Q03=8000080080200802:8020000000000000 Q04=8020080280200800:8000080080000800 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=a00aa00880088008:aaa8888888aaa000 Q18=8020080280200800:8000080080000800 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=ffff8000097cca9c X00=0000000000000002 X01=ffff000009edf080 X02=0000000000000000 X03=0000000000000002 X04=dfff800000000000 X05=0000000000000000 X06=0000000000000001 X07=0000000000000004 X08=ffff8000112071e3 X09=dfff800000000000 X10=ffff700002240e3c X11=1ffff00002240e3c X12=ffff700002240e3d X13=1ffff00002240d90 X14=1ffff00002240e12 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a959c00 X19=0000000000000037 X20=ffff800010f3d000 X21=ffff80000e951280 X22=ffff000009edf080 X23=dfff800000000000 X24=ffff800010c007c9 X25=0000000000000004 X26=ffff000009edf080 X27=dfff800000000000 X28=0000000000000029 X29=ffff800011207190 X30=ffff8000097ccab0 SP=ffff800011207190 PSTATE=800000c5 N--- EL1h FPCR=00000000 FPSR=00000000 Q00=0000000000000000:0000000000000000 Q01=6f73657262696c00:0000000000000008 Q02=7265645f4d54495f:00322e6f732e766c Q03=0000000000000002:8020080280200800 Q04=0000000000000000:8000000000000000 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=0000000080000000:000080000002aaa8 Q18=0000000000000000:8000000000000000 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