syzkaller login: [ 54.281629][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 54.285522][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 56.106531][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:15118' (ECDSA) to the list of known hosts. 1970/01/01 00:01:16 fuzzer started 1970/01/01 00:01:18 connecting to host at localhost:45333 1970/01/01 00:01:18 checking machine... 1970/01/01 00:01:18 checking revisions... 1970/01/01 00:01:19 testing simple program... [ 79.857806][ T3056] cgroup: Unknown subsys name 'net' [ 80.254969][ T3056] cgroup: Unknown subsys name 'rlimit' executing program [ 83.734491][ T3059] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.755929][ T3059] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 85.205828][ T3059] device hsr_slave_0 entered promiscuous mode [ 85.262574][ T3059] device hsr_slave_1 entered promiscuous mode [ 86.352491][ T3059] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 86.417004][ T3059] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 86.498662][ T3059] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 86.593241][ T3059] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 87.798751][ T3059] 8021q: adding VLAN 0 to HW filter on device bond0 [ 87.849476][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 87.855342][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 88.503319][ T3370] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 88.508054][ T3370] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 88.536897][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 88.546679][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 88.573587][ T3370] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 88.610906][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 88.692824][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 88.697594][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 88.723594][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 88.728347][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 88.760692][ T3059] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 89.293540][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 89.295164][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready executing program [ 90.704879][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 90.709922][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 91.388985][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 91.395902][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 91.406183][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 91.414786][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 91.437096][ T3059] device veth0_vlan entered promiscuous mode [ 91.488078][ T3059] device veth1_vlan entered promiscuous mode [ 91.607377][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 91.614231][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 91.619267][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 91.626822][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 91.648728][ T3059] device veth0_macvtap entered promiscuous mode [ 91.679875][ T3059] device veth1_macvtap entered promiscuous mode [ 91.712096][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 91.717537][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 91.775229][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 91.782594][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 91.812832][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 91.818322][ T1716] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 91.845889][ T3059] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 91.847101][ T3059] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 91.848197][ T3059] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 91.849297][ T3059] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 1970/01/01 00:01:32 building call list... [ 93.096608][ T9] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 93.219571][ T9] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 93.657168][ T9] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 93.921913][ T9] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 95.694401][ T9] device hsr_slave_0 left promiscuous mode [ 95.751771][ T9] device hsr_slave_1 left promiscuous mode [ 95.941696][ T9] device veth1_macvtap left promiscuous mode [ 95.942757][ T9] device veth0_macvtap left promiscuous mode [ 95.944059][ T9] device veth1_vlan left promiscuous mode [ 95.945407][ T9] device veth0_vlan left promiscuous mode executing program [ 97.130752][ T9] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 97.222011][ T9] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 97.567538][ T9] bond0 (unregistering): Released all slaves executing program executing program executing program [ 108.516178][ T3054] can: request_module (can-proto-0) failed. [ 108.520771][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 108.522179][ T9] leaked reference. [ 108.522706][ T9] ipv6_add_dev+0x13c/0x580 [ 108.524169][ T9] addrconf_notify+0x1a0/0x710 [ 108.524916][ T9] raw_notifier_call_chain+0x54/0x74 [ 108.525597][ T9] call_netdevice_notifiers_info+0x54/0xa0 [ 108.526298][ T9] register_netdevice+0x3f0/0x564 [ 108.527032][ T9] register_netdev+0x24/0x4c [ 108.527758][ T9] loopback_net_init+0x4c/0xb0 [ 108.528628][ T9] ops_init+0x40/0x14c [ 108.529299][ T9] setup_net+0x190/0x3c0 [ 108.529912][ T9] copy_net_ns+0xec/0x360 [ 108.530760][ T9] create_new_namespaces+0x114/0x350 [ 108.531460][ T9] unshare_nsproxy_namespaces+0x64/0xb0 [ 108.532173][ T9] ksys_unshare+0x18c/0x320 [ 108.532741][ T9] __arm64_sys_unshare+0x14/0x24 [ 108.533382][ T9] invoke_syscall+0x48/0x114 [ 108.534031][ T9] el0_svc_common.constprop.0+0x44/0xec executing program [ 108.659757][ T3054] can: request_module (can-proto-0) failed. [ 108.760651][ T3054] can: request_module (can-proto-0) failed. executing program executing program [ 117.342410][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.346027][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.349560][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 117.355269][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 118.610575][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 118.611422][ T9] leaked reference. [ 118.611859][ T9] ipv6_add_dev+0x13c/0x580 [ 118.612440][ T9] addrconf_notify+0x1a0/0x710 [ 118.613066][ T9] raw_notifier_call_chain+0x54/0x74 [ 118.613770][ T9] call_netdevice_notifiers_info+0x54/0xa0 [ 118.614488][ T9] register_netdevice+0x3f0/0x564 [ 118.615149][ T9] register_netdev+0x24/0x4c [ 118.615767][ T9] loopback_net_init+0x4c/0xb0 [ 118.616403][ T9] ops_init+0x40/0x14c [ 118.616979][ T9] setup_net+0x190/0x3c0 [ 118.617575][ T9] copy_net_ns+0xec/0x360 [ 118.618179][ T9] create_new_namespaces+0x114/0x350 [ 118.618861][ T9] unshare_nsproxy_namespaces+0x64/0xb0 [ 118.619616][ T9] ksys_unshare+0x18c/0x320 [ 118.620282][ T9] __arm64_sys_unshare+0x14/0x24 [ 118.620935][ T9] invoke_syscall+0x48/0x114 [ 118.621593][ T9] el0_svc_common.constprop.0+0x44/0xec [ 128.880444][ T9] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 128.881330][ T9] leaked reference. [ 128.881868][ T9] ipv6_add_dev+0x13c/0x580 [ 128.882527][ T9] addrconf_notify+0x1a0/0x710 [ 128.883171][ T9] raw_notifier_call_chain+0x54/0x74 [ 128.883864][ T9] call_netdevice_notifiers_info+0x54/0xa0 [ 128.884569][ T9] register_netdevice+0x3f0/0x564 [ 128.885251][ T9] register_netdev+0x24/0x4c [ 128.885894][ T9] loopback_net_init+0x4c/0xb0 [ 128.886558][ T9] ops_init+0x40/0x14c [ 128.887155][ T9] setup_net+0x190/0x3c0 [ 128.887758][ T9] copy_net_ns+0xec/0x360 [ 128.888369][ T9] create_new_namespaces+0x114/0x350 [ 128.889061][ T9] unshare_nsproxy_namespaces+0x64/0xb0 [ 128.889783][ T9] ksys_unshare+0x18c/0x320 [ 128.890707][ T9] __arm64_sys_unshare+0x14/0x24 [ 128.891732][ T9] invoke_syscall+0x48/0x114 [ 128.892355][ T9] el0_svc_common.constprop.0+0x44/0xec VM DIAGNOSIS: 21:57:53 Registers: info registers vcpu 0 PC=ffff8000087bd108 X00=000000000000005f X01=0000000000000002 X02=0000000000000000 X03=ffff80000a7bd000 X04=ffff80000a5104e0 X05=000000000000005f X06=352e38303120205b X07=205b5d3630373232 X08=7f7f7f7f7f7f7f7f X09=ffff80000a80b6a0 X10=000000000000005d X11=fffffffffffcc1c0 X12=5b5d363037323235 X13=205d395420202020 X14=0000000000000000 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffe X19=ffff80000a61bce1 X20=ffff8000087bd0e0 X21=f0ff000002d18080 X22=ffff80000a61bcf1 X23=0000000000000f01 X24=0000000000000031 X25=ffff80000a61c0e0 X26=0000000000000000 X27=00000000000000c0 X28=0000000000000031 X29=ffff80000a80b750 X30=f29c8000087bd11c SP=ffff80000a80b750 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=b30850d713820230:54778eee637335ff Z01=692474656b636f73:6d61657274735f66 Z02=298c8c337bea98df:6de44f9e354eca60 Z03=0000000000000000:0010000000000000 Z04=0000000000000000:0000000000000000 Z05=4010040140100401:4010040140100401 Z06=0000000000001000:0000000000001000 Z07=0000000000000000:3feaaaaaaaaaaaab Z08=0000000000000000:3fd619f85b7d79ee Z09=0000000000000000:3fe2024b4483c0c0 Z10=0000000000000000:3fe0000000000000 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=0000000000000006:00000000561d2486 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=0000ffff9dd67e30 X00=0000000000000008 X01=00000000ffffffff X02=0000ffff9dd682d4 X03=0000ffffdad43a48 X04=0000ffffdad43806 X05=00000000127c3eb3 X06=0000ffff9de36958 X07=7f7f7f7f7f7f7f7f X08=0000000000000038 X09=0000ffff9ddf55c1 X10=0000000000000038 X11=0000000000000000 X12=2ce33e6c02ce33e7 X13=0000000000001fef X14=0000000000000001 X15=0000ffffdad43806 X16=0000ffff9dd417b0 X17=00a3d70a3d70a3d6 X18=0000000000000000 X19=00000000004c4053 X20=0000000000000bd0 X21=0000000000000001 X22=0000ffffdad43a90 X23=00000000127c3e90 X24=0000000000000000 X25=00000000127c5ea0 X26=0000ffff9de39000 X27=0000000000000014 X28=00000000127c02a0 X29=0000ffffdad43930 X30=0000ffff9dd31258 SP=0000ffffdad43890 PSTATE=a0000000 N-C- 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=2525252525252525:2525252525252525 Z01=6576726573007325:0a0d0a0d7525203a Z02=726f727265206465:6e72757465722072 Z03=0000000000ff0000:0000000000000000 Z04=0000000000000000:0000000000000000 Z05=0000000000100001:0000000000100000 Z06=0000000000000000:0000000000000000 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=0000000000110010:0000000000110010 Z17=a00a8000a0000000:aa80a000aa80aa90 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