syzkaller login: [  115.240321][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'.
[  115.258838][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'.
[  115.262751][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'.
Warning: Permanently added '[localhost]:30206' (ECDSA) to the list of known hosts.
1970/01/01 00:02:41 fuzzer started
1970/01/01 00:02:46 connecting to host at localhost:43097
1970/01/01 00:02:46 checking machine...
1970/01/01 00:02:46 checking revisions...
1970/01/01 00:02:49 testing simple program...
[  169.631165][ T3062] cgroup: Unknown subsys name 'net'
[  170.101276][ T3062] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
[  176.610795][ T3065] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[  176.634795][ T3065] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
executing program
[  179.468476][ T3065] device hsr_slave_0 entered promiscuous mode
[  179.511991][ T3065] device hsr_slave_1 entered promiscuous mode
[  181.376197][ T3065] netdevsim netdevsim0 netdevsim0: renamed from eth0
[  181.478048][ T3065] netdevsim netdevsim0 netdevsim1: renamed from eth1
[  181.550767][ T3065] netdevsim netdevsim0 netdevsim2: renamed from eth2
[  181.629973][ T3065] netdevsim netdevsim0 netdevsim3: renamed from eth3
executing program
[  184.029613][ T3065] 8021q: adding VLAN 0 to HW filter on device bond0
[  184.141715][   T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
[  184.163900][   T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
executing program
[  185.598584][   T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready
[  185.614621][   T21] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[  185.699703][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready
[  185.716315][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[  185.790211][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready
[  185.852089][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready
[  186.052467][   T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready
[  186.067173][   T21] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[  186.139842][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready
[  186.154932][ T2834] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[  186.240313][ T3065] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[  187.522311][  T894] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[  187.524490][  T894] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
executing program
[  190.783153][   T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready
[  190.791609][   T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
executing program
[  192.282180][   T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready
[  192.299685][   T21] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[  192.338516][  T894] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[  192.345302][  T894] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[  192.365869][ T3065] device veth0_vlan entered promiscuous mode
[  192.499673][ T3065] device veth1_vlan entered promiscuous mode
[  192.830627][    T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready
[  192.848602][    T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[  192.880752][ T3065] device veth0_macvtap entered promiscuous mode
[  192.941394][ T3065] device veth1_macvtap entered promiscuous mode
[  193.112754][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[  193.125303][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
[  193.132350][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready
[  193.137989][ T3063] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[  193.183723][ T3404] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
[  193.191942][ T3404] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[  193.243734][ T3065] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[  193.245722][ T3065] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[  193.252349][ T3065] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[  193.253487][ T3065] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
executing program
1970/01/01 00:03:15 building call list...
[  195.941608][   T51] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  196.210778][   T51] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  196.395878][   T51] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  196.622759][   T51] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
executing program
[  200.112254][   T51] device hsr_slave_0 left promiscuous mode
[  200.160379][   T51] device hsr_slave_1 left promiscuous mode
executing program
[  200.435918][   T51] device veth1_macvtap left promiscuous mode
[  200.439445][   T51] device veth0_macvtap left promiscuous mode
[  200.469152][   T51] device veth1_vlan left promiscuous mode
[  200.472260][   T51] device veth0_vlan left promiscuous mode
executing program
[  204.215168][   T51] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
[  204.381058][   T51] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
[  205.130595][   T51] bond0 (unregistering): Released all slaves
executing program
executing program
executing program
executing program
[  216.818269][   T51] unregister_netdevice: waiting for lo to become free. Usage count = 2
[  216.819807][   T51] leaked reference.
[  216.821015][   T51]  ipv6_add_dev+0x300/0xeec
[  216.821612][   T51]  addrconf_notify+0x3ac/0x1080
[  216.822424][   T51]  notifier_call_chain+0xc0/0x180
[  216.823207][   T51]  raw_notifier_call_chain+0x18/0x24
[  216.823634][   T51]  call_netdevice_notifiers_info+0x80/0xe0
[  216.824070][   T51]  register_netdevice+0xa7c/0x1094
[  216.824529][   T51]  register_netdev+0x24/0x4c
[  216.825002][   T51]  loopback_net_init+0x6c/0x124
[  216.825480][   T51]  ops_init+0x8c/0x46c
[  216.825874][   T51]  setup_net+0x638/0xbec
[  216.826260][   T51]  copy_net_ns+0x1fc/0x560
[  216.826756][   T51]  create_new_namespaces+0x300/0x840
[  216.827309][   T51]  unshare_nsproxy_namespaces+0x7c/0x174
[  216.827729][   T51]  ksys_unshare+0x284/0x580
[  216.828155][   T51]  __arm64_sys_unshare+0x30/0x50
[  216.828622][   T51]  invoke_syscall+0x6c/0x260
executing program
[  218.621258][ T3056] can: request_module (can-proto-0) failed.
[  219.037706][ T3056] can: request_module (can-proto-0) failed.
[  219.350845][ T3056] can: request_module (can-proto-0) failed.
executing program
executing program
[  227.099885][   T51] unregister_netdevice: waiting for lo to become free. Usage count = 2
[  227.108604][   T51] leaked reference.
[  227.110112][   T51]  ipv6_add_dev+0x300/0xeec
[  227.111308][   T51]  addrconf_notify+0x3ac/0x1080
[  227.112929][   T51]  notifier_call_chain+0xc0/0x180
[  227.115108][   T51]  raw_notifier_call_chain+0x18/0x24
[  227.116531][   T51]  call_netdevice_notifiers_info+0x80/0xe0
[  227.118500][   T51]  register_netdevice+0xa7c/0x1094
[  227.120175][   T51]  register_netdev+0x24/0x4c
[  227.121258][   T51]  loopback_net_init+0x6c/0x124
[  227.121955][   T51]  ops_init+0x8c/0x46c
[  227.123282][   T51]  setup_net+0x638/0xbec
[  227.137420][   T51]  copy_net_ns+0x1fc/0x560
[  227.138970][   T51]  create_new_namespaces+0x300/0x840
[  227.139455][   T51]  unshare_nsproxy_namespaces+0x7c/0x174
[  227.139925][   T51]  ksys_unshare+0x284/0x580
[  227.140374][   T51]  __arm64_sys_unshare+0x30/0x50
[  227.140827][   T51]  invoke_syscall+0x6c/0x260
executing program
executing program
executing program
executing program
[  237.238085][   T51] unregister_netdevice: waiting for lo to become free. Usage count = 2
[  237.238945][   T51] leaked reference.
[  237.240354][   T51]  ipv6_add_dev+0x300/0xeec
[  237.241208][   T51]  addrconf_notify+0x3ac/0x1080
[  237.241701][   T51]  notifier_call_chain+0xc0/0x180
[  237.242179][   T51]  raw_notifier_call_chain+0x18/0x24
[  237.242631][   T51]  call_netdevice_notifiers_info+0x80/0xe0
[  237.243065][   T51]  register_netdevice+0xa7c/0x1094
[  237.243538][   T51]  register_netdev+0x24/0x4c
[  237.244069][   T51]  loopback_net_init+0x6c/0x124
[  237.244620][   T51]  ops_init+0x8c/0x46c
[  237.245082][   T51]  setup_net+0x638/0xbec
[  237.245404][   T51]  copy_net_ns+0x1fc/0x560
[  237.245794][   T51]  create_new_namespaces+0x300/0x840
[  237.246199][   T51]  unshare_nsproxy_namespaces+0x7c/0x174
[  237.246732][   T51]  ksys_unshare+0x284/0x580
[  237.247167][   T51]  __arm64_sys_unshare+0x30/0x50
[  237.247716][   T51]  invoke_syscall+0x6c/0x260
[  237.396242][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'.
[  237.421109][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'.
[  237.434717][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'.
[  237.450072][ T2902] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'.
executing program

VM DIAGNOSIS:
18:03:00  Registers:
info registers vcpu 0
 PC=0000ffffabc06be8 X00=0000ffffde33e590 X01=0000000000000000
X02=0000000000000004 X03=0000000000000048 X04=000000000040777c
X05=0000000000000001 X06=0000000000000001 X07=0000000000001000
X08=0000000000000001 X09=0000000000000001 X10=0000000000000000
X11=0000000000000001 X12=0000ffffde33e718 X13=0000000000000001
X14=00000000000008ff X15=0000000000000001 X16=0000000000000000
X17=0000000000000064 X18=0000000000000001 X19=0000ffffabc22000
X20=0000ffffde33efb4 X21=0000ffffde33e590 X22=0000ffffabc0ed29
X23=0000ffffde33efb9 X24=0000ffffde33e598 X25=0000000000000005
X26=0000ffffabc21000 X27=0000ffffabbf2f88 X28=0000ffffabbf2000
X29=0000ffffde33def0 X30=0000ffffabc077d8  SP=0000ffffde33def0
PSTATE=20000000 --C- EL0t     FPCR=00000000 FPSR=00000000
Q00=0000000000000000:0000000000000000 Q01=0000000000000000:0000000000000000
Q02=0000000000000000:0000000000000000 Q03=0000000000000000:0000000000000000
Q04=0000000000000000:0000000000000000 Q05=0000000000000000:0000000000000000
Q06=0000000000000000:0000000000000000 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=0000000000000000:0000000000000000 Q31=0000000000000000:0000000000000000
info registers vcpu 1
 PC=ffff8000082b1654 X00=00000000000000c0 X01=00000000000000c0
X02=0000000000000000 X03=1fffe0000d52b391 X04=0000000086504721
X05=0000000000000000 X06=00000000f3f3f3f3 X07=1fffe000013e4821
X08=ffff000009f24108 X09=0000000000000118 X10=ffff000009f23fb4
X11=0000000000000004 X12=1fffe000013e47f6 X13=1fffe000013e4821
X14=1ffff00002278df6 X15=0000000000000000 X16=0000000000000000
X17=0000000000000000 X18=ffff00006a959c00 X19=1ffff00002278e14
X20=ffff80000e1c7c88 X21=ffff80000e1c7c88 X22=ffff80005c792000
X23=0000000000000001 X24=ffff80000e8f0798 X25=0000000000000000
X26=0000000000000000 X27=ffff80000967dbc8 X28=ffff80000cbe28e0
X29=ffff8000113c7020 X30=ffff8000082b1604  SP=ffff8000113c7010
PSTATE=100000c5 ---V EL1h     FPCR=00000000 FPSR=00000000
Q00=0000000000000000:0000000000000000 Q01=2e6f732e34366863:7261612d78756e69
Q02=42494c4700362e6f:732e6362696c0031 Q03=0000000000000000:0000000000000000
Q04=0000000080000000:0000000000000800 Q05=0000000000000000:0000000000000000
Q06=0000000000000000:0000000000000000 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=0000800000000008:0080000800000000
Q18=0000000080000000:0000000000000800 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