syzkaller login: [ 56.647588][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 56.651497][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 56.665755][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:48283' (ECDSA) to the list of known hosts. 1970/01/01 00:01:17 fuzzer started 1970/01/01 00:01:18 connecting to host at localhost:41963 1970/01/01 00:01:18 checking machine... 1970/01/01 00:01:18 checking revisions... 1970/01/01 00:01:20 testing simple program... [ 80.480895][ T3055] cgroup: Unknown subsys name 'net' [ 80.894787][ T3055] cgroup: Unknown subsys name 'rlimit' executing program [ 84.250706][ T3058] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 84.274327][ T3058] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 85.699329][ T3058] device hsr_slave_0 entered promiscuous mode [ 85.745450][ T3058] device hsr_slave_1 entered promiscuous mode [ 86.919445][ T3058] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 87.027201][ T3058] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 87.111857][ T3058] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 87.212558][ T3058] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 88.326360][ T3058] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.377468][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 88.382224][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 89.018244][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 89.022868][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 89.051107][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 89.056360][ T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 89.085519][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 89.112127][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 89.188369][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 89.197041][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 89.225007][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 89.230126][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 89.255221][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 89.795849][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 89.797413][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 91.185527][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 91.190492][ T3375] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 91.872844][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 91.878675][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 91.887801][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 91.892700][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 91.916093][ T3058] device veth0_vlan entered promiscuous mode [ 91.965913][ T3058] device veth1_vlan entered promiscuous mode [ 92.080748][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 92.090193][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 92.096213][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 92.101123][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 92.128717][ T3058] device veth0_macvtap entered promiscuous mode [ 92.152614][ T3058] device veth1_macvtap entered promiscuous mode [ 92.196401][ T3398] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 92.201773][ T3398] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 92.249118][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 92.256606][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 92.294498][ T3398] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 92.300000][ T3398] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 92.318276][ T3058] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.319518][ T3058] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.320596][ T3058] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.321668][ T3058] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:32 building call list... [ 93.570734][ T11] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 93.689599][ T11] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 93.889625][ T11] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 94.133833][ T11] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 95.957727][ T11] device hsr_slave_0 left promiscuous mode [ 96.005477][ T11] device hsr_slave_1 left promiscuous mode [ 96.204633][ T11] device veth1_macvtap left promiscuous mode [ 96.205957][ T11] device veth0_macvtap left promiscuous mode [ 96.207253][ T11] device veth1_vlan left promiscuous mode [ 96.208380][ T11] device veth0_vlan left promiscuous mode executing program [ 97.427513][ T11] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 97.512067][ T11] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 97.799699][ T11] bond0 (unregistering): Released all slaves executing program executing program executing program [ 107.877506][ T3048] can: request_module (can-proto-0) failed. [ 108.029708][ T3048] can: request_module (can-proto-0) failed. [ 108.143662][ T3048] can: request_module (can-proto-0) failed. [ 109.024303][ T11] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 109.025289][ T11] leaked reference. [ 109.025880][ T11] ipv6_add_dev+0x13c/0x580 [ 109.027630][ T11] addrconf_notify+0x1a0/0x710 [ 109.028285][ T11] raw_notifier_call_chain+0x54/0x74 [ 109.028988][ T11] call_netdevice_notifiers_info+0x54/0xa0 [ 109.029800][ T11] register_netdevice+0x3f0/0x564 [ 109.030487][ T11] register_netdev+0x24/0x4c [ 109.031097][ T11] loopback_net_init+0x4c/0xb0 [ 109.031797][ T11] ops_init+0x40/0x14c [ 109.032415][ T11] setup_net+0x190/0x3c0 [ 109.033033][ T11] copy_net_ns+0xec/0x360 [ 109.033713][ T11] create_new_namespaces+0x114/0x350 [ 109.034376][ T11] unshare_nsproxy_namespaces+0x64/0xb0 [ 109.035092][ T11] ksys_unshare+0x18c/0x320 [ 109.035711][ T11] __arm64_sys_unshare+0x14/0x24 [ 109.036387][ T11] invoke_syscall+0x48/0x114 [ 109.037015][ T11] el0_svc_common.constprop.0+0x44/0xec executing program executing program executing program [ 116.989620][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 116.996958][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.000437][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.007217][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 119.093578][ T11] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 119.094613][ T11] leaked reference. [ 119.095139][ T11] ipv6_add_dev+0x13c/0x580 [ 119.095806][ T11] addrconf_notify+0x1a0/0x710 [ 119.096462][ T11] raw_notifier_call_chain+0x54/0x74 [ 119.097164][ T11] call_netdevice_notifiers_info+0x54/0xa0 [ 119.097938][ T11] register_netdevice+0x3f0/0x564 [ 119.098626][ T11] register_netdev+0x24/0x4c [ 119.099272][ T11] loopback_net_init+0x4c/0xb0 [ 119.099940][ T11] ops_init+0x40/0x14c [ 119.100532][ T11] setup_net+0x190/0x3c0 [ 119.101149][ T11] copy_net_ns+0xec/0x360 [ 119.101784][ T11] create_new_namespaces+0x114/0x350 [ 119.102484][ T11] unshare_nsproxy_namespaces+0x64/0xb0 [ 119.103250][ T11] ksys_unshare+0x18c/0x320 [ 119.103873][ T11] __arm64_sys_unshare+0x14/0x24 [ 119.104547][ T11] invoke_syscall+0x48/0x114 [ 119.105208][ T11] el0_svc_common.constprop.0+0x44/0xec [ 129.363430][ T11] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 129.364355][ T11] leaked reference. [ 129.364899][ T11] ipv6_add_dev+0x13c/0x580 [ 129.365563][ T11] addrconf_notify+0x1a0/0x710 [ 129.366226][ T11] raw_notifier_call_chain+0x54/0x74 [ 129.366941][ T11] call_netdevice_notifiers_info+0x54/0xa0 [ 129.367703][ T11] register_netdevice+0x3f0/0x564 [ 129.368383][ T11] register_netdev+0x24/0x4c [ 129.369015][ T11] loopback_net_init+0x4c/0xb0 [ 129.369704][ T11] ops_init+0x40/0x14c [ 129.370311][ T11] setup_net+0x190/0x3c0 [ 129.370933][ T11] copy_net_ns+0xec/0x360 [ 129.371558][ T11] create_new_namespaces+0x114/0x350 [ 129.372264][ T11] unshare_nsproxy_namespaces+0x64/0xb0 [ 129.373060][ T11] ksys_unshare+0x18c/0x320 [ 129.373778][ T11] __arm64_sys_unshare+0x14/0x24 [ 129.374446][ T11] invoke_syscall+0x48/0x114 [ 129.375085][ T11] el0_svc_common.constprop.0+0x44/0xec VM DIAGNOSIS: 09:42:24 Registers: info registers vcpu 0 PC=ffff8000087bbba0 X00=faff000002d13c80 X01=0000000000000002 X02=ffff80000a7bd018 X03=0000000000000018 X04=faff000002d13c80 X05=0000000000000070 X06=302e39303120205b X07=205b5d3038383532 X08=7f7f7f7f7f7f7f7f X09=ffff80000a81b6a0 X10=000000000000005d X11=fffffffffffcc230 X12=5b5d303838353230 X13=205d313154202020 X14=0000000000000000 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffd X19=ffff80000a61bcda X20=ffff8000087bc340 X21=faff000002d13c80 X22=ffff80000a61bcf1 X23=0000000000000f01 X24=0000000000000031 X25=ffff80000a61c0e0 X26=0000000000000000 X27=00000000000000c0 X28=0000000000000031 X29=ffff80000a81b750 X30=e6d58000087bc368 SP=ffff80000a81b750 PSTATE=804000c9 N--- 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=acea0359575def5c:134c6f7035dc96ec 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=0000000000000010:00000011ab2d9470 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff80000813c720 X00=0000000000000008 X01=ffff80000825ba8c X02=ffff80000ab736f0 X03=ffff80000ab73730 X04=000000000000000a X05=0000000000000000 X06=ffff80000ab73730 X07=0000000000000001 X08=0000000000000000 X09=f9ff000004f3aa00 X10=f9ff000004f3aa00 X11=f9ff000004f3aa0c X12=ffff80000ab73c38 X13=1f3fe000009e7541 X14=0000000000000000 X15=ffffffffffffffff X16=ffff800009ccc9b8 X17=0000000000000001 X18=ffff80000ab73c38 X19=ffff80000ab73dd0 X20=ffff80000ab73de0 X21=ffff80000813c720 X22=ffff80000ab736f0 X23=f2ff0000034a2e80 X24=ffff80000ab736d8 X25=ffff80000ab74000 X26=0000000000000003 X27=f4ff000002c0d200 X28=f4ff000004f3a710 X29=ffff80000ab73640 X30=ffff8000098965f8 SP=ffff80000ab73640 PSTATE=80400009 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=0000000000000000:0000000000000000 Z01=6468636600277325:27206f742079726f Z02=0079726f74636572:696420726f20656c Z03=0000000000000000:0000000000000000 Z04=0000000000000000:0000000000ff0000 Z05=0000000040000001:0000000000000000 Z06=0000000000000000:0000000000100000 Z07=4010040140100401:4010040140100401 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=0000001000410000:0000001000410000 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