syzkaller login: [ 55.799828][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 55.804342][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 55.818916][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:37946' (ECDSA) to the list of known hosts. 1970/01/01 00:01:12 fuzzer started 1970/01/01 00:01:14 connecting to host at localhost:34819 1970/01/01 00:01:14 checking machine... 1970/01/01 00:01:14 checking revisions... 1970/01/01 00:01:15 testing simple program... [ 75.790968][ T3054] cgroup: Unknown subsys name 'net' [ 76.179451][ T3054] cgroup: Unknown subsys name 'rlimit' executing program [ 79.616871][ T3056] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 79.637154][ T3056] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 81.284890][ T3056] device hsr_slave_0 entered promiscuous mode [ 81.351698][ T3056] device hsr_slave_1 entered promiscuous mode [ 82.464438][ T3056] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 82.516955][ T3056] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 82.606775][ T3056] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 82.675349][ T3056] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 83.772329][ T3056] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.823063][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 83.830551][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 84.474461][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 84.483736][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 84.518512][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 84.523251][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 84.542687][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 84.570569][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 84.653271][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 84.661202][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 84.693249][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 84.700289][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 84.724707][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 85.253789][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 85.255403][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 86.598957][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 86.604076][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 87.312082][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 87.317553][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 87.326777][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 87.332971][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 87.363079][ T3056] device veth0_vlan entered promiscuous mode [ 87.410421][ T3056] device veth1_vlan entered promiscuous mode [ 87.526131][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 87.533990][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 87.541730][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 87.546961][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 87.569697][ T3056] device veth0_macvtap entered promiscuous mode [ 87.595713][ T3056] device veth1_macvtap entered promiscuous mode [ 87.608853][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 87.614501][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 87.698715][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 87.703902][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 87.734596][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 87.742810][ T3397] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 87.765960][ T3056] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 87.767044][ T3056] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 87.768606][ T3056] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 87.769634][ T3056] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:28 building call list... [ 89.061367][ T77] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 89.164928][ T77] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 89.379633][ T77] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 89.605468][ T77] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 91.580552][ T77] device hsr_slave_0 left promiscuous mode [ 91.619764][ T77] device hsr_slave_1 left promiscuous mode [ 91.809573][ T77] device veth1_macvtap left promiscuous mode [ 91.810530][ T77] device veth0_macvtap left promiscuous mode [ 91.811802][ T77] device veth1_vlan left promiscuous mode [ 91.812939][ T77] device veth0_vlan left promiscuous mode executing program [ 93.021858][ T77] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 93.105575][ T77] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 93.472506][ T77] bond0 (unregistering): Released all slaves executing program executing program executing program [ 103.945770][ T3404] can: request_module (can-proto-0) failed. [ 104.081039][ T3404] can: request_module (can-proto-0) failed. [ 104.183354][ T3404] can: request_module (can-proto-0) failed. executing program [ 104.628671][ T77] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 104.629617][ T77] leaked reference. [ 104.630155][ T77] ipv6_add_dev+0x13c/0x580 [ 104.631364][ T77] addrconf_notify+0x1a0/0x710 [ 104.632546][ T77] raw_notifier_call_chain+0x54/0x74 [ 104.633271][ T77] call_netdevice_notifiers_info+0x54/0xa0 [ 104.633985][ T77] register_netdevice+0x3f0/0x564 [ 104.634675][ T77] register_netdev+0x24/0x4c [ 104.635277][ T77] loopback_net_init+0x4c/0xb0 [ 104.635901][ T77] ops_init+0x40/0x14c [ 104.636449][ T77] setup_net+0x190/0x3c0 [ 104.637011][ T77] copy_net_ns+0xec/0x360 [ 104.637610][ T77] create_new_namespaces+0x114/0x350 [ 104.638477][ T77] unshare_nsproxy_namespaces+0x64/0xb0 [ 104.639161][ T77] ksys_unshare+0x18c/0x320 [ 104.639761][ T77] __arm64_sys_unshare+0x14/0x24 [ 104.640508][ T77] invoke_syscall+0x48/0x114 [ 104.641153][ T77] el0_svc_common.constprop.0+0x44/0xec executing program executing program [ 112.971074][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 112.974544][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 112.981279][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 112.984689][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 114.708835][ T77] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 114.709694][ T77] leaked reference. [ 114.710122][ T77] ipv6_add_dev+0x13c/0x580 [ 114.710713][ T77] addrconf_notify+0x1a0/0x710 [ 114.711358][ T77] raw_notifier_call_chain+0x54/0x74 [ 114.712048][ T77] call_netdevice_notifiers_info+0x54/0xa0 [ 114.712788][ T77] register_netdevice+0x3f0/0x564 [ 114.713561][ T77] register_netdev+0x24/0x4c [ 114.714326][ T77] loopback_net_init+0x4c/0xb0 [ 114.714456][ T77] ops_init+0x40/0x14c [ 114.714565][ T77] setup_net+0x190/0x3c0 [ 114.716303][ T77] copy_net_ns+0xec/0x360 [ 114.716929][ T77] create_new_namespaces+0x114/0x350 [ 114.717589][ T77] unshare_nsproxy_namespaces+0x64/0xb0 [ 114.718312][ T77] ksys_unshare+0x18c/0x320 [ 114.718946][ T77] __arm64_sys_unshare+0x14/0x24 [ 114.719623][ T77] invoke_syscall+0x48/0x114 [ 114.720244][ T77] el0_svc_common.constprop.0+0x44/0xec [ 124.978405][ T77] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 124.979407][ T77] leaked reference. [ 124.979882][ T77] ipv6_add_dev+0x13c/0x580 [ 124.980456][ T77] addrconf_notify+0x1a0/0x710 [ 124.981013][ T77] raw_notifier_call_chain+0x54/0x74 [ 124.981649][ T77] call_netdevice_notifiers_info+0x54/0xa0 [ 124.982303][ T77] register_netdevice+0x3f0/0x564 [ 124.983093][ T77] register_netdev+0x24/0x4c [ 124.984024][ T77] loopback_net_init+0x4c/0xb0 [ 124.984798][ T77] ops_init+0x40/0x14c [ 124.985441][ T77] setup_net+0x190/0x3c0 [ 124.986138][ T77] copy_net_ns+0xec/0x360 [ 124.986885][ T77] create_new_namespaces+0x114/0x350 [ 124.987946][ T77] unshare_nsproxy_namespaces+0x64/0xb0 [ 124.988772][ T77] ksys_unshare+0x18c/0x320 [ 124.989474][ T77] __arm64_sys_unshare+0x14/0x24 [ 124.990219][ T77] invoke_syscall+0x48/0x114 [ 124.991226][ T77] el0_svc_common.constprop.0+0x44/0xec VM DIAGNOSIS: 09:54:41 Registers: info registers vcpu 0 PC=0000ffffaf2329fc X00=0000000000000000 X01=00000000000259d8 X02=0000000000000005 X03=0000000000000802 X04=0000000000000000 X05=0000000000000000 X06=0000fffff92e9920 X07=0000000000000001 X08=00000000000000de X09=0000000000000006 X10=0000000000000000 X11=0000000000000005 X12=0000000000024000 X13=0000000000023258 X14=0000000000000002 X15=0000000000000fff X16=0000000000022000 X17=0000000073516240 X18=0000fffff92e96a0 X19=0000000000000000 X20=0000000000000000 X21=0000000000000000 X22=0000000000402f29 X23=0000ffffaf24de10 X24=00000000000259d8 X25=0000000000000002 X26=0000fffff92e9580 X27=0000ffffaf246000 X28=0000ffffaf24d1d0 X29=0000fffff92e96d0 X30=0000ffffaf220c48 SP=0000fffff92e9550 PSTATE=40000000 -Z-- 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=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 info registers vcpu 1 PC=ffff8000087bd108 X00=000000000000000d X01=0000000000000002 X02=0000000000000000 X03=ffff80000a7bd000 X04=ffff80000a5104e0 X05=000000000000000d X06=362e34303120205b X07=205b5d3436333133 X08=7f7f7f7f7f7f7f7f X09=ffff80000aa936a0 X10=000000000000005d X11=fffffffffffcc230 X12=5b5d343633313336 X13=205d373754202020 X14=0000000000000000 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffd X19=ffff80000a61bcf3 X20=ffff8000087bd0e0 X21=f8ff000002d13c80 X22=ffff80000a61bcf4 X23=0000000000000f01 X24=0000000000000034 X25=ffff80000a61c0e0 X26=0000000000000000 X27=00000000000000c0 X28=0000000000000034 X29=ffff80000aa93750 X30=1be28000087bd11c SP=ffff80000aa93750 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