syzkaller login: [ 55.542684][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 55.546828][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 55.554581][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:49535' (ECDSA) to the list of known hosts. 1970/01/01 00:01:14 fuzzer started 1970/01/01 00:01:16 connecting to host at localhost:45207 1970/01/01 00:01:17 checking machine... 1970/01/01 00:01:17 checking revisions... 1970/01/01 00:01:18 testing simple program... [ 78.614543][ T3054] cgroup: Unknown subsys name 'net' [ 78.970479][ T3054] cgroup: Unknown subsys name 'rlimit' executing program [ 82.403818][ T3057] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 82.430869][ T3057] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 83.878324][ T3057] device hsr_slave_0 entered promiscuous mode [ 83.951450][ T3057] device hsr_slave_1 entered promiscuous mode [ 84.892132][ T3057] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 84.961495][ T3057] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 85.037672][ T3057] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 85.117847][ T3057] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 86.257946][ T3057] 8021q: adding VLAN 0 to HW filter on device bond0 executing program [ 86.320958][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 86.326297][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 87.315268][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 87.324979][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 87.357313][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 87.362441][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 87.398228][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 87.432145][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 87.518314][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 87.524572][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 87.552791][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 87.557403][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 87.589204][ T3057] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 88.106685][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 88.108221][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 89.577602][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 89.584435][ T3055] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 90.292985][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 90.298160][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 90.307045][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 90.314649][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 90.342336][ T3057] device veth0_vlan entered promiscuous mode [ 90.390692][ T3057] device veth1_vlan entered promiscuous mode [ 90.507804][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 90.514256][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 90.519814][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 90.525417][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 90.550240][ T3057] device veth0_macvtap entered promiscuous mode [ 90.575798][ T3057] device veth1_macvtap entered promiscuous mode [ 90.584259][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 90.591979][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 90.668425][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 90.676471][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 90.709399][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 90.714896][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 90.748529][ T3057] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.750484][ T3057] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.751413][ T3057] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 90.752458][ T3057] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:31 building call list... [ 91.928588][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 92.066518][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 92.329640][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 92.546632][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 94.526642][ T9] device hsr_slave_0 left promiscuous mode [ 94.590749][ T9] device hsr_slave_1 left promiscuous mode [ 94.780590][ T9] device veth1_macvtap left promiscuous mode [ 94.781626][ T9] device veth0_macvtap left promiscuous mode [ 94.782831][ T9] device veth1_vlan left promiscuous mode [ 94.784161][ T9] device veth0_vlan left promiscuous mode executing program [ 95.910663][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 96.012755][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 96.322506][ T9] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 107.389256][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 107.390246][ T9] leaked reference. [ 107.390803][ T9] ipv6_add_dev+0x13c/0x580 [ 107.392501][ T9] addrconf_notify+0x1a0/0x710 [ 107.393352][ T9] raw_notifier_call_chain+0x54/0x74 [ 107.394063][ T9] call_netdevice_notifiers_info+0x54/0xa0 [ 107.394852][ T9] register_netdevice+0x3f0/0x564 [ 107.395511][ T9] register_netdev+0x24/0x4c [ 107.396138][ T9] loopback_net_init+0x4c/0xb0 [ 107.396772][ T9] ops_init+0x40/0x14c [ 107.397349][ T9] setup_net+0x190/0x3c0 [ 107.397933][ T9] copy_net_ns+0xec/0x360 [ 107.398541][ T9] create_new_namespaces+0x114/0x350 [ 107.399722][ T9] unshare_nsproxy_namespaces+0x64/0xb0 [ 107.400484][ T9] ksys_unshare+0x18c/0x320 [ 107.401123][ T9] __arm64_sys_unshare+0x14/0x24 [ 107.401791][ T9] invoke_syscall+0x48/0x114 [ 107.402438][ T9] el0_svc_common.constprop.0+0x44/0xec [ 107.589778][ T3049] can: request_module (can-proto-0) failed. [ 107.745398][ T3049] can: request_module (can-proto-0) failed. [ 107.854298][ T3049] can: request_module (can-proto-0) failed. executing program executing program [ 115.809953][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 115.813805][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 115.817418][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 115.821935][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.449453][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 117.450376][ T9] leaked reference. [ 117.450882][ T9] ipv6_add_dev+0x13c/0x580 [ 117.451584][ T9] addrconf_notify+0x1a0/0x710 [ 117.452220][ T9] raw_notifier_call_chain+0x54/0x74 [ 117.452925][ T9] call_netdevice_notifiers_info+0x54/0xa0 [ 117.453674][ T9] register_netdevice+0x3f0/0x564 [ 117.454369][ T9] register_netdev+0x24/0x4c [ 117.455032][ T9] loopback_net_init+0x4c/0xb0 [ 117.455715][ T9] ops_init+0x40/0x14c [ 117.456320][ T9] setup_net+0x190/0x3c0 [ 117.456932][ T9] copy_net_ns+0xec/0x360 [ 117.457567][ T9] create_new_namespaces+0x114/0x350 [ 117.458277][ T9] unshare_nsproxy_namespaces+0x64/0xb0 [ 117.459048][ T9] ksys_unshare+0x18c/0x320 [ 117.459699][ T9] __arm64_sys_unshare+0x14/0x24 [ 117.460360][ T9] invoke_syscall+0x48/0x114 [ 117.461017][ T9] el0_svc_common.constprop.0+0x44/0xec [ 127.719274][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 127.720099][ T9] leaked reference. [ 127.720610][ T9] ipv6_add_dev+0x13c/0x580 [ 127.721179][ T9] addrconf_notify+0x1a0/0x710 [ 127.721735][ T9] raw_notifier_call_chain+0x54/0x74 [ 127.722373][ T9] call_netdevice_notifiers_info+0x54/0xa0 [ 127.723001][ T9] register_netdevice+0x3f0/0x564 [ 127.723567][ T9] register_netdev+0x24/0x4c [ 127.724108][ T9] loopback_net_init+0x4c/0xb0 [ 127.724767][ T9] ops_init+0x40/0x14c [ 127.725370][ T9] setup_net+0x190/0x3c0 [ 127.725989][ T9] copy_net_ns+0xec/0x360 [ 127.726603][ T9] create_new_namespaces+0x114/0x350 [ 127.727291][ T9] unshare_nsproxy_namespaces+0x64/0xb0 [ 127.728005][ T9] ksys_unshare+0x18c/0x320 [ 127.728655][ T9] __arm64_sys_unshare+0x14/0x24 [ 127.729322][ T9] invoke_syscall+0x48/0x114 [ 127.729887][ T9] el0_svc_common.constprop.0+0x44/0xec VM DIAGNOSIS: 22:05:57 Registers: info registers vcpu 0 PC=ffff8000082d4ce0 X00=fffffc00001c4c00 X01=01ffc0000800a836 X02=0000000000000000 X03=f1ff000004d72924 X04=0000000000000000 X05=ffffffffffffffff X06=0000000000000000 X07=fffffffffffffffe X08=0000000000000230 X09=0000000000000001 X10=a85fb69bc1d4cab0 X11=0000000000000001 X12=ffff80000a3bfef8 X13=ffff800009fc42f0 X14=00000000000000e4 X15=000000400005def8 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=ffff80000a664368 X20=0000000000000001 X21=fdff00000421d198 X22=fdff00000421d198 X23=f0ff000003144758 X24=fdff00000421d060 X25=ffff80000a664350 X26=0000000000000000 X27=ffff80000a664360 X28=ffff80000a3c0000 X29=ffff80000bb6bbf0 X30=ffff80000821c9d0 SP=ffff80000bb6bbf0 PSTATE=60400009 -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=0000000000000000:414fffffe0000000 Z02=89a57bf37b3b7b10:13508b22a347f6e5 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=0000000000000010:0000001138d44040 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000087bbba0 X00=f2ff000002d18080 X01=0000000000000002 X02=ffff80000a7bd018 X03=0000000000000018 X04=f2ff000002d18080 X05=0000000000000020 X06=332e37303120205b X07=205b5d3130353239 X08=7f7f7f7f7f7f7f7f X09=ffff80000a80b6a0 X10=000000000000005d X11=fffffffffffcc1b0 X12=5b5d313035323933 X13=205d395420202020 X14=0000000000000000 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffe X19=ffff80000a61bcd8 X20=ffff8000087bc340 X21=f2ff000002d18080 X22=ffff80000a61bcf4 X23=0000000000000f01 X24=0000000000000034 X25=ffff80000a61c0e0 X26=0000000000000000 X27=00000000000000c0 X28=0000000000000034 X29=ffff80000a80b750 X30=0a918000087bc368 SP=ffff80000a80b750 PSTATE=804000c9 N--- EL2h 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=2f2f2f2f2f2f2f2f:2f2f2f2f2f2f2f2f Z01=6f73657262696c00:0000000000000008 Z02=7265645f4d54495f:00322e6f732e766c Z03=0000000000000002:8020080280200800 Z04=0000000000000000:8000000000000000 Z05=0000000000000000:0000000000000000 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=0000000080000000:000080000002aaa8 Z18=0000000000000000:8000000000000000 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