syzkaller login: [ 112.198086][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 112.221315][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 112.240522][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:49442' (ECDSA) to the list of known hosts. 1970/01/01 00:02:18 fuzzer started 1970/01/01 00:02:22 connecting to host at localhost:41737 1970/01/01 00:02:23 checking machine... 1970/01/01 00:02:23 checking revisions... 1970/01/01 00:02:26 testing simple program... executing program [ 146.763256][ T3064] cgroup: Unknown subsys name 'net' [ 147.668940][ T3064] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program [ 155.437876][ T3067] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 155.471509][ T3067] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 158.828850][ T3067] device hsr_slave_0 entered promiscuous mode [ 158.869873][ T3067] device hsr_slave_1 entered promiscuous mode [ 161.352212][ T3067] netdevsim netdevsim0 netdevsim0: renamed from eth0 executing program [ 161.482172][ T3067] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 161.600721][ T3067] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 161.699135][ T3067] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 164.232323][ T3067] 8021q: adding VLAN 0 to HW filter on device bond0 [ 164.332608][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 164.360151][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 165.922794][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 165.933383][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 166.006999][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 166.012865][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 166.094616][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 166.152704][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 166.298532][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 166.309438][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 166.376952][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 166.382377][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 166.437588][ T3067] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 167.610252][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 167.612304][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 170.682938][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 170.706765][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 172.202248][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 172.220523][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 172.262141][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 172.275114][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 172.298526][ T3067] device veth0_vlan entered promiscuous mode [ 172.401235][ T3067] device veth1_vlan entered promiscuous mode [ 172.701687][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 172.716565][ T897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 172.750819][ T3067] device veth0_macvtap entered promiscuous mode [ 172.807645][ T3067] device veth1_macvtap entered promiscuous mode [ 172.939108][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 172.950770][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 172.969328][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 172.978518][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 173.067889][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 173.080502][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 173.138869][ T3067] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 173.140156][ T3067] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 173.140737][ T3067] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 173.141199][ T3067] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:02:54 building call list... [ 175.500016][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 175.692688][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 175.917730][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 176.174795][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program executing program [ 179.487786][ T9] device hsr_slave_0 left promiscuous mode [ 179.537312][ T9] device hsr_slave_1 left promiscuous mode [ 179.780121][ T9] device veth1_macvtap left promiscuous mode [ 179.781926][ T9] device veth0_macvtap left promiscuous mode [ 179.795405][ T9] device veth1_vlan left promiscuous mode [ 179.807838][ T9] device veth0_vlan left promiscuous mode executing program [ 182.919185][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 183.119358][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 183.876314][ T9] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 195.605991][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 195.607514][ T9] leaked reference. [ 195.608403][ T9] ipv6_add_dev+0x300/0xeec [ 195.610749][ T9] addrconf_notify+0x3ac/0x1080 [ 195.612165][ T9] notifier_call_chain+0xc0/0x180 [ 195.625011][ T9] raw_notifier_call_chain+0x18/0x24 [ 195.626967][ T9] call_netdevice_notifiers_info+0x80/0xe0 [ 195.627454][ T9] register_netdevice+0xa7c/0x1094 [ 195.627906][ T9] register_netdev+0x24/0x4c [ 195.628395][ T9] loopback_net_init+0x6c/0x124 [ 195.628923][ T9] ops_init+0x8c/0x46c [ 195.629515][ T9] setup_net+0x638/0xbec [ 195.629961][ T9] copy_net_ns+0x1fc/0x560 [ 195.630363][ T9] create_new_namespaces+0x300/0x840 [ 195.630789][ T9] unshare_nsproxy_namespaces+0x7c/0x174 [ 195.631240][ T9] ksys_unshare+0x284/0x580 [ 195.631642][ T9] __arm64_sys_unshare+0x30/0x50 [ 195.632067][ T9] invoke_syscall+0x6c/0x260 executing program [ 198.834664][ T3062] can: request_module (can-proto-0) failed. [ 199.218813][ T3062] can: request_module (can-proto-0) failed. [ 199.429949][ T3062] can: request_module (can-proto-0) failed. executing program executing program [ 205.946682][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 205.947481][ T9] leaked reference. [ 205.947831][ T9] ipv6_add_dev+0x300/0xeec [ 205.948265][ T9] addrconf_notify+0x3ac/0x1080 [ 205.948795][ T9] notifier_call_chain+0xc0/0x180 [ 205.949225][ T9] raw_notifier_call_chain+0x18/0x24 [ 205.949645][ T9] call_netdevice_notifiers_info+0x80/0xe0 [ 205.950086][ T9] register_netdevice+0xa7c/0x1094 [ 205.950508][ T9] register_netdev+0x24/0x4c [ 205.950892][ T9] loopback_net_init+0x6c/0x124 [ 205.951323][ T9] ops_init+0x8c/0x46c [ 205.951710][ T9] setup_net+0x638/0xbec [ 205.953329][ T9] copy_net_ns+0x1fc/0x560 [ 205.953903][ T9] create_new_namespaces+0x300/0x840 [ 205.954409][ T9] unshare_nsproxy_namespaces+0x7c/0x174 [ 205.954832][ T9] ksys_unshare+0x284/0x580 [ 205.955282][ T9] __arm64_sys_unshare+0x30/0x50 [ 205.955693][ T9] invoke_syscall+0x6c/0x260 executing program executing program executing program executing program [ 216.146280][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 216.146930][ T9] leaked reference. [ 216.147165][ T9] ipv6_add_dev+0x300/0xeec [ 216.147507][ T9] addrconf_notify+0x3ac/0x1080 [ 216.147828][ T9] notifier_call_chain+0xc0/0x180 [ 216.148088][ T9] raw_notifier_call_chain+0x18/0x24 [ 216.148433][ T9] call_netdevice_notifiers_info+0x80/0xe0 [ 216.148910][ T9] register_netdevice+0xa7c/0x1094 [ 216.149322][ T9] register_netdev+0x24/0x4c [ 216.149720][ T9] loopback_net_init+0x6c/0x124 [ 216.150143][ T9] ops_init+0x8c/0x46c [ 216.150518][ T9] setup_net+0x638/0xbec [ 216.150915][ T9] copy_net_ns+0x1fc/0x560 [ 216.151326][ T9] create_new_namespaces+0x300/0x840 [ 216.153108][ T9] unshare_nsproxy_namespaces+0x7c/0x174 [ 216.154654][ T9] ksys_unshare+0x284/0x580 [ 216.156045][ T9] __arm64_sys_unshare+0x30/0x50 [ 216.156463][ T9] invoke_syscall+0x6c/0x260 [ 216.587636][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 216.615285][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 216.623199][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 216.648328][ T2904] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 00:55:42 Registers: info registers vcpu 0 PC=ffff80000b5fc058 X00=ffff80000b5fc050 X01=ffff80000b5fc090 X02=0000000000000000 X03=1fffe0000d527591 X04=00000000f204f1f1 X05=ffff7000022a2f24 X06=dfff800000000000 X07=00000000f1f1f1f1 X08=ffff00000e8e8a18 X09=0000000000000028 X10=ffff00000e8e89b4 X11=0000000000000007 X12=1fffe00001d1d136 X13=1fffe00001d1d143 X14=1ffff000022a2f02 X15=000000400005def8 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=ffff80000e4276c0 X20=0000000000009698 X21=0000000000009698 X22=dfff800000000000 X23=0000002d66e7de00 X24=0000000000000001 X25=ffff80000e427b40 X26=0000000000004e20 X27=0000000000004e20 X28=0000000000004e20 X29=ffff8000115179c0 X30=ffff80000b5fc0a8 SP=ffff8000115179c0 PSTATE=600000c5 -ZC- EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:0000000000000004 Q01=0000000000000000:414fffffe0000000 Q02=592cef4e2ecb9e15:b0fbe2789adfd257 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=0000000000000010:0000001fcc695c60 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000097cceec X00=0000000000000002 X01=ffff000009e98080 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=ffff00006a959c00 X19=0000000000000030 X20=ffff800010f3d000 X21=ffff80000e951240 X22=ffff000009e98080 X23=dfff800000000000 X24=ffff800010c007d1 X25=0000000000000000 X26=ffff000009e98080 X27=dfff800000000000 X28=0000000000000031 X29=ffff800011017120 X30=ffff8000097ccf00 SP=ffff800011017120 PSTATE=800000c5 N--- EL1h FPCR=00000000 FPSR=00000010 Q00=3a3a3a3a3a3a3a3a:3a3a3a3a3a3a3a3a Q01=0000ffffedd815d0:0000ff0031687465 Q02=0000000000414a28:0000ffffedd7d130 Q03=8020000000000000:8020000200000000 Q04=8020080280000000:8020000000000000 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=a00a8000a0000000:aa80a000a000a200 Q18=8020080280000000:8020000000000000 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