syzkaller login: [ 121.477328][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 121.505524][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 121.539977][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 121.547371][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:32889' (ECDSA) to the list of known hosts. 1970/01/01 00:02:34 fuzzer started 1970/01/01 00:02:39 connecting to host at localhost:32935 1970/01/01 00:02:39 checking machine... 1970/01/01 00:02:39 checking revisions... executing program 1970/01/01 00:02:42 testing simple program... [ 163.730706][ T3070] cgroup: Unknown subsys name 'net' [ 164.334947][ T3070] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program [ 172.288895][ T3073] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 172.321392][ T3073] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 175.336078][ T3073] device hsr_slave_0 entered promiscuous mode [ 175.467408][ T3073] device hsr_slave_1 entered promiscuous mode [ 177.663078][ T3073] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 177.793896][ T3073] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 177.876948][ T3073] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 177.965920][ T3073] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 180.535245][ T3073] 8021q: adding VLAN 0 to HW filter on device bond0 [ 180.647326][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 180.672365][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready executing program [ 182.456138][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 182.494467][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 182.603316][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 182.608209][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 182.665457][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 182.718585][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 182.862621][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 182.867942][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 182.917342][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 182.927853][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 182.975281][ T3073] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 184.277234][ T895] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 184.292211][ T895] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 188.141532][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 188.148072][ T13] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 190.117322][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 190.127329][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 190.160317][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready executing program [ 190.186528][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 190.236123][ T3073] device veth0_vlan entered promiscuous mode [ 190.342699][ T3073] device veth1_vlan entered promiscuous mode [ 190.573030][ T895] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 190.582099][ T895] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 190.641682][ T3073] device veth0_macvtap entered promiscuous mode [ 190.694305][ T3073] device veth1_macvtap entered promiscuous mode [ 190.862320][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 190.870699][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 190.883414][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 190.898928][ T3384] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 191.006663][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 191.018647][ T898] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 191.107867][ T3073] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 191.132066][ T3073] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 191.132891][ T3073] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 191.133497][ T3073] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:03:12 building call list... [ 193.885695][ T127] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 194.183842][ T127] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 194.474788][ T127] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 194.817175][ T127] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 197.906144][ T127] device hsr_slave_0 left promiscuous mode [ 197.963384][ T127] device hsr_slave_1 left promiscuous mode [ 198.186412][ T127] device veth1_macvtap left promiscuous mode [ 198.204471][ T127] device veth0_macvtap left promiscuous mode [ 198.206782][ T127] device veth1_vlan left promiscuous mode [ 198.208521][ T127] device veth0_vlan left promiscuous mode executing program [ 201.404785][ T127] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 201.557883][ T127] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface executing program [ 202.305912][ T127] bond0 (unregistering): Released all slaves executing program executing program executing program [ 213.306549][ T3064] can: request_module (can-proto-0) failed. [ 213.637804][ T3064] can: request_module (can-proto-0) failed. [ 213.934280][ T3064] can: request_module (can-proto-0) failed. executing program [ 214.251293][ T127] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 214.252578][ T127] leaked reference. [ 214.253384][ T127] ipv6_add_dev+0x300/0xeec [ 214.254596][ T127] addrconf_notify+0x3ac/0x1080 [ 214.255677][ T127] notifier_call_chain+0xc0/0x180 [ 214.256316][ T127] raw_notifier_call_chain+0x18/0x24 [ 214.257450][ T127] call_netdevice_notifiers_info+0x80/0xe0 [ 214.258969][ T127] register_netdevice+0xa7c/0x1094 [ 214.260556][ T127] register_netdev+0x24/0x4c [ 214.261413][ T127] loopback_net_init+0x6c/0x124 [ 214.261838][ T127] ops_init+0x8c/0x46c [ 214.262251][ T127] setup_net+0x638/0xbec [ 214.262705][ T127] copy_net_ns+0x1fc/0x560 [ 214.263110][ T127] create_new_namespaces+0x300/0x840 [ 214.264901][ T127] unshare_nsproxy_namespaces+0x7c/0x174 [ 214.266085][ T127] ksys_unshare+0x284/0x580 [ 214.267144][ T127] __arm64_sys_unshare+0x30/0x50 [ 214.268256][ T127] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 224.550655][ T127] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 224.551423][ T127] leaked reference. [ 224.552776][ T127] ipv6_add_dev+0x300/0xeec [ 224.554232][ T127] addrconf_notify+0x3ac/0x1080 [ 224.555402][ T127] notifier_call_chain+0xc0/0x180 [ 224.556532][ T127] raw_notifier_call_chain+0x18/0x24 [ 224.557689][ T127] call_netdevice_notifiers_info+0x80/0xe0 [ 224.558922][ T127] register_netdevice+0xa7c/0x1094 [ 224.560743][ T127] register_netdev+0x24/0x4c [ 224.561465][ T127] loopback_net_init+0x6c/0x124 [ 224.562045][ T127] ops_init+0x8c/0x46c [ 224.562422][ T127] setup_net+0x638/0xbec [ 224.562798][ T127] copy_net_ns+0x1fc/0x560 [ 224.563380][ T127] create_new_namespaces+0x300/0x840 [ 224.563845][ T127] unshare_nsproxy_namespaces+0x7c/0x174 [ 224.564183][ T127] ksys_unshare+0x284/0x580 [ 224.564534][ T127] __arm64_sys_unshare+0x30/0x50 [ 224.564902][ T127] invoke_syscall+0x6c/0x260 executing program executing program executing program [ 234.837351][ T127] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 234.838191][ T127] leaked reference. [ 234.838558][ T127] ipv6_add_dev+0x300/0xeec [ 234.839017][ T127] addrconf_notify+0x3ac/0x1080 [ 234.839656][ T127] notifier_call_chain+0xc0/0x180 [ 234.840307][ T127] raw_notifier_call_chain+0x18/0x24 [ 234.840735][ T127] call_netdevice_notifiers_info+0x80/0xe0 [ 234.841207][ T127] register_netdevice+0xa7c/0x1094 [ 234.841654][ T127] register_netdev+0x24/0x4c [ 234.842079][ T127] loopback_net_init+0x6c/0x124 [ 234.842501][ T127] ops_init+0x8c/0x46c [ 234.842924][ T127] setup_net+0x638/0xbec [ 234.843338][ T127] copy_net_ns+0x1fc/0x560 [ 234.843729][ T127] create_new_namespaces+0x300/0x840 [ 234.845352][ T127] unshare_nsproxy_namespaces+0x7c/0x174 [ 234.845699][ T127] ksys_unshare+0x284/0x580 [ 234.846030][ T127] __arm64_sys_unshare+0x30/0x50 [ 234.846358][ T127] invoke_syscall+0x6c/0x260 [ 236.206521][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 236.212677][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 236.217326][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 236.224992][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. VM DIAGNOSIS: 02:20:12 Registers: info registers vcpu 0 PC=ffff8000082d2860 X00=00000000000000c0 X01=00000000000000c0 X02=1fffe00001af5a21 X03=0000000000000000 X04=0000000000000000 X05=ffff7000022bce38 X06=dfff800000000000 X07=00000000f1f1f1f1 X08=ffff80000e3115e0 X09=dfff800000000000 X10=ffff700001c622bc X11=1ffff00001c622bc X12=ffff700001c622bd X13=0000000000000000 X14=1ffff000022bce12 X15=0000000000000000 X16=0000000000000000 X17=0000000000000000 X18=ffff00006a93ac00 X19=ffff80000e310ae0 X20=ffff8000115e7510 X21=ffff800010c00280 X22=1ffff000022bce5c X23=0000000000000001 X24=0000000000000000 X25=ffff80000e9513a0 X26=ffff80000e3115e0 X27=1ffff000022bcea2 X28=ffff80000e9513f8 X29=ffff8000115e7240 X30=ffff8000082d2844 SP=ffff8000115e7240 PSTATE=100000c5 ---V EL1h FPCR=00000000 FPSR=00000010 Q00=0000000000000000:0000000000000004 Q01=0000000000000000:414fffffe0000000 Q02=04786bc741adfdb4:5a953d945ac51f86 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=0000000000000010:0000002352bea7a0 Q31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff80000823b174 X00=ffff00006a957008 X01=0000000000000003 X02=0000000000000003 X03=1fffe0000143a361 X04=0000000000000000 X05=000000000000b97c X06=00000000000ecce4 X07=0000000000000000 X08=1fffe0000d52d68b X09=0000000000000078 X10=ffff00000a1d24b4 X11=0000000000000007 X12=1fffe0000143a496 X13=1fffe0000143a4ad X14=1ffff00002278ebe X15=ffff00006a93abc8 X16=0000000000000003 X17=0000000000001498 X18=ffff00006a93ac00 X19=0000000000000000 X20=ffff00000aaabc00 X21=0000000000000001 X22=1fffe00001555787 X23=ffff00001527d25c X24=0000000000000001 X25=0000000002e32a4f X26=000000000000b957 X27=0000000000000e02 X28=0000000000000003 X29=ffff8000113c75a0 X30=ffff80000cb3b024 SP=ffff8000113c7560 PSTATE=100000c5 ---V EL1h FPCR=00000000 FPSR=00000000 Q00=0000000000000000:0000000000000000 Q01=5f66690065736c61:663d70755f666900 Q02=2f62696c2f006573:6c61663d6e776f64 Q03=0000000200000000:0000000000000002 Q04=0000000000200000:0000000000000000 Q05=0000000000000000:0010000000000000 Q06=0000000000000000:0000000100000000 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=0000200000010000:0020010002001002 Q18=0000000000200000:0000000100000000 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