syzkaller login: [ 95.468839][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 95.486013][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 95.511389][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:25906' (ECDSA) to the list of known hosts. 1970/01/01 00:02:11 fuzzer started 1970/01/01 00:02:14 connecting to host at localhost:40741 1970/01/01 00:02:15 checking machine... 1970/01/01 00:02:15 checking revisions... 1970/01/01 00:02:17 testing simple program... [ 137.918909][ T3055] cgroup: Unknown subsys name 'net' [ 138.407898][ T3055] cgroup: Unknown subsys name 'rlimit' executing program executing program [ 144.286061][ T3058] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 144.321944][ T3058] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link executing program [ 146.988199][ T3058] device hsr_slave_0 entered promiscuous mode [ 147.053897][ T3058] device hsr_slave_1 entered promiscuous mode executing program [ 148.816788][ T3058] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 148.895901][ T3058] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 148.984673][ T3058] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 149.065755][ T3058] netdevsim netdevsim0 netdevsim3: renamed from eth3 executing program [ 151.045136][ T3058] 8021q: adding VLAN 0 to HW filter on device bond0 [ 151.148783][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 151.173478][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 152.377339][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 152.385894][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 152.429079][ T2827] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 152.437966][ T2827] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 152.495532][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 152.561739][ T2827] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 152.712572][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 152.722852][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 152.799062][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 152.812407][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 152.882516][ T3058] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 153.981196][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 153.984291][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 156.364228][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 156.386100][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready executing program [ 157.491683][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 157.512240][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 157.528636][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 157.540677][ T3056] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 157.591523][ T3058] device veth0_vlan entered promiscuous mode [ 157.688400][ T3058] device veth1_vlan entered promiscuous mode [ 157.946906][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 157.957746][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 158.008044][ T3058] device veth0_macvtap entered promiscuous mode [ 158.058530][ T3058] device veth1_macvtap entered promiscuous mode [ 158.219376][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 158.232012][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 158.241046][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 158.256080][ T25] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 158.319270][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 158.336527][ T1718] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 158.402376][ T3058] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 158.405353][ T3058] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 158.407133][ T3058] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 158.408860][ T3058] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program 1970/01/01 00:02:39 building call list... [ 160.416426][ T1055] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 160.581826][ T1055] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 160.697285][ T1055] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 160.799263][ T1055] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 163.391255][ T1055] device hsr_slave_0 left promiscuous mode [ 163.442694][ T1055] device hsr_slave_1 left promiscuous mode [ 163.672683][ T1055] device veth1_macvtap left promiscuous mode [ 163.674236][ T1055] device veth0_macvtap left promiscuous mode [ 163.676150][ T1055] device veth1_vlan left promiscuous mode [ 163.677872][ T1055] device veth0_vlan left promiscuous mode executing program [ 166.213197][ T1055] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 166.343113][ T1055] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 166.905699][ T1055] bond0 (unregistering): Released all slaves executing program executing program executing program executing program [ 178.441106][ T1055] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 178.445537][ T1055] leaked reference. [ 178.448816][ T1055] ipv6_add_dev+0x13c/0x580 [ 178.452171][ T1055] addrconf_notify+0x1a0/0x710 [ 178.454159][ T1055] raw_notifier_call_chain+0x54/0x74 [ 178.455700][ T1055] call_netdevice_notifiers_info+0x54/0xa0 [ 178.457212][ T1055] register_netdevice+0x3f0/0x564 [ 178.458399][ T1055] register_netdev+0x24/0x4c [ 178.459704][ T1055] loopback_net_init+0x4c/0xb0 [ 178.461007][ T1055] ops_init+0x40/0x14c [ 178.462201][ T1055] setup_net+0x190/0x3c0 [ 178.463408][ T1055] copy_net_ns+0xec/0x360 [ 178.464518][ T1055] create_new_namespaces+0x114/0x350 [ 178.465824][ T1055] unshare_nsproxy_namespaces+0x64/0xb0 [ 178.467255][ T1055] ksys_unshare+0x18c/0x320 [ 178.468558][ T1055] __arm64_sys_unshare+0x14/0x24 [ 178.469882][ T1055] invoke_syscall+0x48/0x114 [ 178.471183][ T1055] el0_svc_common.constprop.0+0x44/0xec executing program executing program executing program [ 187.887953][ T3051] can: request_module (can-proto-0) failed. [ 188.143363][ T3051] can: request_module (can-proto-0) failed. [ 188.369324][ T3051] can: request_module (can-proto-0) failed. [ 188.770952][ T1055] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 188.773328][ T1055] leaked reference. [ 188.773989][ T1055] ipv6_add_dev+0x13c/0x580 [ 188.774926][ T1055] addrconf_notify+0x1a0/0x710 [ 188.776017][ T1055] raw_notifier_call_chain+0x54/0x74 [ 188.776753][ T1055] call_netdevice_notifiers_info+0x54/0xa0 [ 188.777583][ T1055] register_netdevice+0x3f0/0x564 [ 188.778154][ T1055] register_netdev+0x24/0x4c [ 188.778882][ T1055] loopback_net_init+0x4c/0xb0 [ 188.779669][ T1055] ops_init+0x40/0x14c [ 188.781250][ T1055] setup_net+0x190/0x3c0 [ 188.782257][ T1055] copy_net_ns+0xec/0x360 [ 188.783679][ T1055] create_new_namespaces+0x114/0x350 [ 188.785110][ T1055] unshare_nsproxy_namespaces+0x64/0xb0 [ 188.786418][ T1055] ksys_unshare+0x18c/0x320 [ 188.788108][ T1055] __arm64_sys_unshare+0x14/0x24 [ 188.790441][ T1055] invoke_syscall+0x48/0x114 [ 188.792329][ T1055] el0_svc_common.constprop.0+0x44/0xec executing program executing program [ 195.174052][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 195.185898][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 195.196692][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 195.207917][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. executing program executing program [ 198.891897][ T1055] unregister_netdevice: waiting for lo to become free. Usage count = 2 [ 198.894579][ T1055] leaked reference. [ 198.895677][ T1055] ipv6_add_dev+0x13c/0x580 [ 198.896687][ T1055] addrconf_notify+0x1a0/0x710 [ 198.897821][ T1055] raw_notifier_call_chain+0x54/0x74 [ 198.899286][ T1055] call_netdevice_notifiers_info+0x54/0xa0 [ 198.901056][ T1055] register_netdevice+0x3f0/0x564 [ 198.902385][ T1055] register_netdev+0x24/0x4c [ 198.903790][ T1055] loopback_net_init+0x4c/0xb0 [ 198.905135][ T1055] ops_init+0x40/0x14c [ 198.906220][ T1055] setup_net+0x190/0x3c0 [ 198.907201][ T1055] copy_net_ns+0xec/0x360 [ 198.908159][ T1055] create_new_namespaces+0x114/0x350 [ 198.909318][ T1055] unshare_nsproxy_namespaces+0x64/0xb0 [ 198.911123][ T1055] ksys_unshare+0x18c/0x320 [ 198.934538][ T1055] __arm64_sys_unshare+0x14/0x24 [ 198.935793][ T1055] invoke_syscall+0x48/0x114 [ 198.936944][ T1055] el0_svc_common.constprop.0+0x44/0xec executing program VM DIAGNOSIS: 17:45:05 Registers: info registers vcpu 0 PC=ffff8000080175c4 X00=ffff80000a39d0e8 X01=ffff80007581a000 X02=0000000000000001 X03=0000000000000000 X04=000000298c336bd0 X05=0000000000000001 X06=0000000000000190 X07=f8ff00000482e800 X08=0000000000000000 X09=0000000000000800 X10=0000000000000001 X11=0000000000000003 X12=0000000000000001 X13=00000000000003d8 X14=00000000000003d8 X15=0000abea2435e962 X16=0000000000000000 X17=0000000000000000 X18=0000000000000000 X19=ffff00007b62c080 X20=fcff00000379ae80 X21=ffff00007fbc1080 X22=fcff00000379ae80 X23=6b8180000989d13c X24=fcff00000379b500 X25=0000000000000001 X26=0000000000000000 X27=0000000000000000 X28=fcff00000379ae80 X29=ffff80000ab0bb90 X30=03e680000989c610 SP=ffff80000ab0bb90 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=0000000000000000:3f842f6c298db1e9 Z01=0000000000000000:3f847ae147ae147b Z02=0000000000000000:41910514266cbbde Z03=0000000000000000:41261a8000000000 Z04=0000000000000000:3f84460985312e8e Z05=0000000000000000:3fcb9c2e7b996060 Z06=0000000000000000:3fd3333333333333 Z07=0000000000000000:3feaaaaaaaaaaaab Z08=0000000000000000:3f74705c75660780 Z09=0000000000000000:3fe295b0b599df8e 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=0000000000000000:000000007a7435d1 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000087bbba0 X00=f8ff000002e67c80 X01=0000000000000002 X02=ffff80000a7bd018 X03=0000000000000018 X04=f8ff000002e67c80 X05=0000000000000037 X06=342e38373120205b X07=205b5d3733353534 X08=7f7f7f7f7f7f7f7f X09=ffff80000bb0b6f0 X10=000000000000005d X11=fffffffffffcc0d0 X12=5b5d373335353434 X13=205d353530315420 X14=0000000000000000 X15=0000000000000020 X16=617355202e656572 X17=746e756f63206567 X18=00000000fffffffb X19=ffff80000a61bccd X20=ffff8000087bc340 X21=f8ff000002e67c80 X22=ffff80000a61bce9 X23=0000000000000f01 X24=0000000000000029 X25=ffff80000a61c0e0 X26=0000000000000000 X27=00000000000000c0 X28=0000000000000029 X29=ffff80000bb0b7a0 X30=ddb68000087bc368 SP=ffff80000bb0b7a0 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=2525252525252525:2525252525252525 Z01=252f7325006c6c61:00736d5f656d6974 Z02=63615000676e6964:726177726f662f73 Z03=00000000ff000000:ff00000000000000 Z04=000000ff00000000:0000000000000000 Z05=4000000140000000:4000000000000000 Z06=0000000100000000:0000000000000000 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=0100000041404000:0100000041404000 Z17=a00aa00aa00a0000:aaaaaa0080002220 Z18=8020080280200802:8020080200000000 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