syzkaller login: [ 52.913019][ T2893] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 57.563415][ T2893] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 57.569421][ T2893] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:60376' (ECDSA) to the list of known hosts. 1970/01/01 00:01:17 fuzzer started 1970/01/01 00:01:19 connecting to host at localhost:33457 1970/01/01 00:01:19 checking machine... 1970/01/01 00:01:19 checking revisions... 1970/01/01 00:01:20 testing simple program... [ 81.371793][ T3054] cgroup: Unknown subsys name 'net' [ 81.707174][ T3054] cgroup: Unknown subsys name 'rlimit' executing program [ 85.367237][ T3057] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 85.389610][ T3057] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 86.848267][ T3057] device hsr_slave_0 entered promiscuous mode [ 86.896495][ T3057] device hsr_slave_1 entered promiscuous mode [ 87.936891][ T3057] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 88.015258][ T3057] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 88.102586][ T3057] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 88.191093][ T3057] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 89.322031][ T3057] 8021q: adding VLAN 0 to HW filter on device bond0 [ 89.377322][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 89.382310][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 90.162848][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 90.171734][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 90.211912][ T3299] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 90.221371][ T3299] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 90.266712][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 90.306541][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 90.406750][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 90.411704][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 90.450266][ T3299] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 90.457862][ T3299] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 90.495418][ T3057] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 91.060634][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 91.062347][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 92.507617][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 92.512648][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 93.199331][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 93.207684][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 93.219777][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 93.227143][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 93.240296][ T3057] device veth0_vlan entered promiscuous mode [ 93.291572][ T3057] device veth1_vlan entered promiscuous mode [ 93.412116][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 93.418773][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 93.424021][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 93.429018][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 93.452895][ T3057] device veth0_macvtap entered promiscuous mode [ 93.481962][ T3057] device veth1_macvtap entered promiscuous mode [ 93.527849][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 93.533243][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 93.591147][ T3299] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 93.596972][ T3299] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 93.629411][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 93.640080][ T1714] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 93.669161][ T3057] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 93.670467][ T3057] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 93.671522][ T3057] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 93.672599][ T3057] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:34 building call list... [ 94.965752][ T746] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 95.115439][ T746] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 95.335577][ T746] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 95.625857][ T746] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 97.497578][ T746] device hsr_slave_0 left promiscuous mode [ 97.536467][ T746] device hsr_slave_1 left promiscuous mode [ 97.735419][ T746] device veth1_macvtap left promiscuous mode [ 97.736413][ T746] device veth0_macvtap left promiscuous mode [ 97.737649][ T746] device veth1_vlan left promiscuous mode [ 97.739111][ T746] device veth0_vlan left promiscuous mode executing program [ 98.907797][ T746] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 99.025510][ T746] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 99.374752][ T746] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 110.484767][ T746] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 110.485665][ T746] leaked reference. [ 110.486283][ T746] ipv6_add_dev+0x13c/0x580 [ 110.488303][ T746] addrconf_notify+0x1a0/0x710 [ 110.488934][ T746] raw_notifier_call_chain+0x54/0x74 [ 110.489627][ T746] call_netdevice_notifiers_info+0x54/0xa0 [ 110.490419][ T746] register_netdevice+0x3f0/0x564 [ 110.491127][ T746] register_netdev+0x24/0x4c [ 110.491777][ T746] loopback_net_init+0x4c/0xb0 [ 110.492418][ T746] ops_init+0x40/0x14c [ 110.493010][ T746] setup_net+0x190/0x3c0 [ 110.493661][ T746] copy_net_ns+0xec/0x360 [ 110.494394][ T746] create_new_namespaces+0x114/0x350 [ 110.495056][ T746] unshare_nsproxy_namespaces+0x64/0xb0 [ 110.495782][ T746] ksys_unshare+0x18c/0x320 [ 110.496406][ T746] __arm64_sys_unshare+0x14/0x24 [ 110.497053][ T746] invoke_syscall+0x48/0x114 [ 110.497691][ T746] el0_svc_common.constprop.0+0x44/0xec [ 110.505183][ T3047] can: request_module (can-proto-0) failed. [ 110.651026][ T3047] can: request_module (can-proto-0) failed. [ 110.761811][ T3047] can: request_module (can-proto-0) failed. executing program executing program executing program [ 119.529817][ T2893] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 119.533282][ T2893] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 119.540440][ T2893] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 119.548525][ T2893] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 120.554863][ T746] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 120.555883][ T746] leaked reference. [ 120.556353][ T746] ipv6_add_dev+0x13c/0x580 [ 120.556971][ T746] addrconf_notify+0x1a0/0x710 [ 120.557597][ T746] raw_notifier_call_chain+0x54/0x74 [ 120.558238][ T746] call_netdevice_notifiers_info+0x54/0xa0 [ 120.558888][ T746] register_netdevice+0x3f0/0x564 [ 120.559499][ T746] register_netdev+0x24/0x4c [ 120.560059][ T746] loopback_net_init+0x4c/0xb0 [ 120.560652][ T746] ops_init+0x40/0x14c [ 120.561257][ T746] setup_net+0x190/0x3c0 [ 120.561872][ T746] copy_net_ns+0xec/0x360 [ 120.562429][ T746] create_new_namespaces+0x114/0x350 [ 120.563047][ T746] unshare_nsproxy_namespaces+0x64/0xb0 [ 120.563702][ T746] ksys_unshare+0x18c/0x320 [ 120.564459][ T746] __arm64_sys_unshare+0x14/0x24 [ 120.565431][ T746] invoke_syscall+0x48/0x114 [ 120.566037][ T746] el0_svc_common.constprop.0+0x44/0xec [ 130.824113][ T746] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 130.825045][ T746] leaked reference. [ 130.825565][ T746] ipv6_add_dev+0x13c/0x580 [ 130.826231][ T746] addrconf_notify+0x1a0/0x710 [ 130.826870][ T746] raw_notifier_call_chain+0x54/0x74 [ 130.827583][ T746] call_netdevice_notifiers_info+0x54/0xa0 [ 130.828316][ T746] register_netdevice+0x3f0/0x564 [ 130.828990][ T746] register_netdev+0x24/0x4c [ 130.829625][ T746] loopback_net_init+0x4c/0xb0 [ 130.830283][ T746] ops_init+0x40/0x14c [ 130.830897][ T746] setup_net+0x190/0x3c0 [ 130.831504][ T746] copy_net_ns+0xec/0x360 [ 130.832114][ T746] create_new_namespaces+0x114/0x350 [ 130.832913][ T746] unshare_nsproxy_namespaces+0x64/0xb0 [ 130.833655][ T746] ksys_unshare+0x18c/0x320 [ 130.834291][ T746] __arm64_sys_unshare+0x14/0x24 [ 130.834946][ T746] invoke_syscall+0x48/0x114 [ 130.835595][ T746] el0_svc_common.constprop.0+0x44/0xec VM DIAGNOSIS: 11:47:17 Registers: info registers vcpu 0 PC=0000ffffadeee260 X00=0000fffff6d9cd20 X01=000000000049f4ad X02=0000fffff6d9cd00 X03=0000000000000000 X04=0000fffff6d9d050 X05=ffffff80ffffffc8 X06=0000fffff6d9d090 X07=0000fffff6d9d090 X08=0000fffff6d9d090 X09=0000fffff6d9d090 X10=0000000000000000 X11=0000000000000030 X12=0000ffffade99e20 X13=0000000000000000 X14=00ffffffffffffff X15=0000000000000020 X16=0000ffffadf00c50 X17=00000000004c3970 X18=0000000000000000 X19=0000fffff6d9ce10 X20=0000000000000045 X21=0000fffff6d9cf3a X22=0000fffff6d9ce60 X23=000000000049f4ad X24=0000000000000000 X25=00000000004c3000 X26=0000000000000001 X27=00000000004c3000 X28=00000000004c4000 X29=0000fffff6d9ccc0 X30=0000ffffadf00c18 SP=0000fffff6d9ccc0 PSTATE=60000000 -ZC- EL0t BTYPE=0 FPCR=00000000 FPSR=00000000 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=7171717171717171:7171717171717171 Z01=0000000000480b00:6244726c61737176 Z02=00000000004811f4:0000fffff6d9d2a0 Z03=8020080280000002:0000000000000000 Z04=8020080280000000:8020000000000000 Z05=0000000000000000:0000000000000400 Z06=0000000000000000:0000000000000000 Z07=8020080280200802:8020080280200802 Z08=0000000000000000:0000000000000000 Z09=0000000000000000:0000000000000000 Z10=0000000000000000:0000000000000000 Z11=0000000000000000:0000000000000000 Z12=0000000000000000:0000000000000000 Z13=0000000000000000:0000000000000000 Z14=0000000000000000:0000000000000000 Z15=0000000000000000:0000000000000000 Z16=4010040140100401:4010040140100401 Z17=a00a8000a0000000:aa80a000aa820004 Z18=8020080280000000:8020000000000000 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000000:0000000000000000 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff80000813c8f8 X00=0000000000000019 X01=f3ff000003870000 X02=0000000000000000 X03=0000000000000000 X04=0000000000000000 X05=ffff00007fbcea88 X06=0000000000000000 X07=ffff80000a49eb08 X08=ffff80000a3eeb08 X09=00000000ffffe000 X10=ffff80000a49eb08 X11=fffffffffffcc188 X12=00000000000002ff X13=00000000000008fd X14=ffff80000a3eeb08 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffc X19=f3ff000006f82ac8 X20=0000000000000010 X21=0000000000000001 X22=ffff800009fcb2b8 X23=0000000000000001 X24=ffff80000a00d4e0 X25=0000000000000064 X26=00000000ffffb1e5 X27=00000000000000fa X28=00000000ffffb5c0 X29=ffff80000b72bb30 X30=ffff80000813c8f8 SP=ffff80000b72bb30 PSTATE=604000c9 -ZC- EL2h BTYPE=0 FPCR=00000000 FPSR=00000010 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=0000000000000000:0000000000000004 Z01=0000000000000000:4134452700000000 Z02=62d65615c47b8e1c:623929d00fed414a Z03=0000000040000000:0000000000000000 Z04=4010040140100401:4000000000000000 Z05=4010040140100401:4010040140100401 Z06=5555400000400000:5555400000400000 Z07=0000000000000000:0000000000000000 Z08=0000000000000000:0000000000000000 Z09=0000000000000000:0000000000000000 Z10=0000000000000000:0000000000000000 Z11=0000000000000000:0000000000000000 Z12=0000000000000000:0000000000000000 Z13=0000000000000000:0000000000000000 Z14=0000000000000000:0000000000000000 Z15=0000000000000000:0000000000000000 Z16=0000000000000000:0000000000000000 Z17=0000000000000000:0000000000000000 Z18=0000000000000000:0000000000000000 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000010:00000011e38f7d70 Z31=0000000000000000:0000000000000000