lost connection to test machine syzkaller login: [ 97.319773][ T1106] cfg80211: failed to load regulatory.db qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x349000) qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) Warning: Permanently added '[localhost]:42314' (ED25519) to the list of known hosts. [ 162.610773][ T1010] ata1.00: exception Emask 0x0 SAct 0x40000020 SErr 0x0 action 0x6 frozen [ 162.614777][ T1010] ata1.00: failed command: WRITE FPDMA QUEUED [ 162.618069][ T1010] ata1.00: cmd 61/00:28:36:c1:05/20:00:00:00:00/40 tag 5 ncq dma 4194304 ou [ 162.618069][ T1010] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 162.628566][ T1010] ata1.00: status: { DRDY } [ 162.631447][ T1010] ata1.00: failed command: WRITE FPDMA QUEUED [ 162.634703][ T1010] ata1.00: cmd 61/48:f0:36:61:05/1a:00:00:00:00/40 tag 30 ncq dma 3444736 ou [ 162.634703][ T1010] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 162.645873][ T1010] ata1.00: status: { DRDY } [ 162.648686][ T1010] ata1: hard resetting link [ 162.974002][ T1010] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 162.979085][ T1010] ata1.00: configured for UDMA/100 [ 162.983016][ T1010] ata1: EH complete 2026/03/07 14:48:01 parsed 1 programs [ 166.896479][ T5329] cgroup: Unknown subsys name 'net' [ 166.957979][ T5329] cgroup: Unknown subsys name 'cpuset' [ 166.965308][ T5329] cgroup: Unknown subsys name 'rlimit' [ 168.796807][ T5329] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 174.675476][ T5338] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x1e0000) [ 175.174267][ T1010] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 175.200292][ T1010] ata1: failed to read log page 10h (errno=-5) [ 175.212522][ T1010] ata1.00: exception Emask 0x1 SAct 0x40000001 SErr 0x0 action 0x0 [ 175.216796][ T1010] ata1.00: irq_stat 0x41000000 [ 175.219086][ T1010] ata1.00: failed command: READ FPDMA QUEUED [ 175.264137][ T1010] ata1.00: cmd 60/00:00:b6:05:05/04:00:00:00:00/40 tag 0 ncq dma 524288 in [ 175.264137][ T1010] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 175.302355][ T1010] ata1.00: status: { DRDY } [ 175.305129][ T1010] ata1.00: failed command: READ FPDMA QUEUED [ 175.308182][ T1010] ata1.00: cmd 60/00:f0:b6:f5:04/0f:00:00:00:00/40 tag 30 ncq dma 1966080 in [ 175.308182][ T1010] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 175.377209][ T1010] ata1.00: status: { DRDY } [ 175.379440][ T1010] ata1.00: error: { ABRT } [ 175.407223][ T1010] ata1.00: configured for UDMA/100 [ 175.426120][ T1010] sd 0:0:0:0: [sda] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 175.454253][ T1010] sd 0:0:0:0: [sda] tag#0 Sense Key : Aborted Command [current] [ 175.458037][ T1010] sd 0:0:0:0: [sda] tag#0 Add. Sense: No additional sense information [ 175.480326][ T1010] sd 0:0:0:0: [sda] tag#0 CDB: Read(10) 28 00 00 05 05 b6 00 04 00 00 [ 175.496228][ T1010] I/O error, dev sda, sector 329142 op 0x0:(READ) flags 0x80700 phys_seg 9 prio class 2 [ 175.515628][ T1010] sd 0:0:0:0: [sda] tag#30 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 175.546450][ T1010] sd 0:0:0:0: [sda] tag#30 Sense Key : Aborted Command [current] [ 175.562579][ T1010] sd 0:0:0:0: [sda] tag#30 Add. Sense: No additional sense information [ 175.582092][ T1010] sd 0:0:0:0: [sda] tag#30 CDB: Read(10) 28 00 00 04 f5 b6 00 0f 00 00 [ 175.586050][ T1010] I/O error, dev sda, sector 325046 op 0x0:(READ) flags 0x80700 phys_seg 41 prio class 2 [ 175.609043][ T1010] ata1: EH complete [ 175.778568][ T5350] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 175.784121][ T5350] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 175.788198][ T5350] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 175.801455][ T5350] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 175.805949][ T5350] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 177.083892][ T13] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 177.087710][ T13] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 177.165461][ T1055] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 177.182645][ T1055] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 181.264453][ T5404] chnl_net:caif_netlink_parms(): no params data found [ 181.406686][ T5404] bridge0: port 1(bridge_slave_0) entered blocking state [ 181.412751][ T5404] bridge0: port 1(bridge_slave_0) entered disabled state [ 181.416198][ T5404] bridge_slave_0: entered allmulticast mode [ 181.423202][ T5404] bridge_slave_0: entered promiscuous mode [ 181.431373][ T5404] bridge0: port 2(bridge_slave_1) entered blocking state [ 181.435393][ T5404] bridge0: port 2(bridge_slave_1) entered disabled state [ 181.439090][ T5404] bridge_slave_1: entered allmulticast mode [ 181.443665][ T5404] bridge_slave_1: entered promiscuous mode [ 181.476056][ T5404] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 181.485889][ T5404] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 181.512037][ T5404] team0: Port device team_slave_0 added [ 181.517426][ T5404] team0: Port device team_slave_1 added [ 181.541862][ T5404] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 181.545695][ T5404] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem. [ 181.559840][ T5404] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 181.572858][ T5404] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 181.576398][ T5404] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem. [ 181.610305][ T5404] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 181.703971][ T5404] hsr_slave_0: entered promiscuous mode [ 181.711247][ T5404] hsr_slave_1: entered promiscuous mode [ 181.938407][ T5404] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 181.967992][ T5404] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 181.994981][ T5404] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 182.033218][ T5404] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 182.105390][ T5404] bridge0: port 2(bridge_slave_1) entered blocking state [ 182.109176][ T5404] bridge0: port 2(bridge_slave_1) entered forwarding state [ 182.114230][ T5404] bridge0: port 1(bridge_slave_0) entered blocking state [ 182.118775][ T5404] bridge0: port 1(bridge_slave_0) entered forwarding state [ 182.203707][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 182.209056][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 182.288548][ T5404] 8021q: adding VLAN 0 to HW filter on device bond0 [ 182.321424][ T5404] 8021q: adding VLAN 0 to HW filter on device team0 [ 182.348950][ T1078] bridge0: port 1(bridge_slave_0) entered blocking state [ 182.352578][ T1078] bridge0: port 1(bridge_slave_0) entered forwarding state [ 182.383778][ T13] bridge0: port 2(bridge_slave_1) entered blocking state [ 182.387934][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state [ 182.465761][ T5404] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 182.767881][ T5404] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 182.865615][ T5404] veth0_vlan: entered promiscuous mode [ 182.886527][ T5404] veth1_vlan: entered promiscuous mode [ 182.943314][ T5404] veth0_macvtap: entered promiscuous mode [ 182.963726][ T5404] veth1_macvtap: entered promiscuous mode [ 182.991815][ T5404] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 183.012424][ T5404] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 183.054001][ T1078] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 183.069899][ T1078] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 183.098936][ T1078] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 183.110731][ T1078] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0xa0000) [ 183.361348][ T4664] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 183.366854][ T4664] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 183.372312][ T4664] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 183.382832][ T4664] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 183.387867][ T4664] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 183.444944][ T1010] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 183.448441][ T1010] ata1: failed to read log page 10h (errno=-5) 2026/03/07 14:48:20 executed programs: 0 [ 183.481240][ T1010] ata1.00: NCQ disabled due to excessive errors [ 183.484341][ T1010] ata1.00: exception Emask 0x1 SAct 0x4000 SErr 0x0 action 0x0 [ 183.487929][ T1010] ata1.00: irq_stat 0x41000008 [ 183.503718][ T13] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 183.510277][ T1010] ata1.00: failed command: READ FPDMA QUEUED [ 183.513108][ T1010] ata1.00: cmd 60/00:70:9e:8b:03/05:00:00:00:00/40 tag 14 ncq dma 655360 in [ 183.513108][ T1010] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 183.541332][ T1010] ata1.00: status: { DRDY } [ 183.543872][ T1010] ata1.00: error: { ABRT } [ 183.588327][ T1010] ata1.00: configured for UDMA/100 [ 183.599210][ T1010] sd 0:0:0:0: [sda] tag#14 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 183.630893][ T1010] sd 0:0:0:0: [sda] tag#14 Sense Key : Aborted Command [current] [ 183.639704][ T1010] sd 0:0:0:0: [sda] tag#14 Add. Sense: No additional sense information [ 183.654943][ T1010] sd 0:0:0:0: [sda] tag#14 CDB: Read(10) 28 00 00 03 8b 9e 00 05 00 00 [ 183.659181][ T1010] I/O error, dev sda, sector 232350 op 0x0:(READ) flags 0x80700 phys_seg 73 prio class 2 [ 183.664390][ T13] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 183.680997][ T1010] ata1: EH complete [ 183.705409][ T13] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 183.747718][ T13] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 183.887541][ T5426] chnl_net:caif_netlink_parms(): no params data found [ 184.002872][ T5426] bridge0: port 1(bridge_slave_0) entered blocking state [ 184.010407][ T5426] bridge0: port 1(bridge_slave_0) entered disabled state [ 184.014089][ T5426] bridge_slave_0: entered allmulticast mode [ 184.036083][ T5426] bridge_slave_0: entered promiscuous mode [ 184.044221][ T5426] bridge0: port 2(bridge_slave_1) entered blocking state [ 184.061091][ T5426] bridge0: port 2(bridge_slave_1) entered disabled state [ 184.064722][ T5426] bridge_slave_1: entered allmulticast mode [ 184.069442][ T5426] bridge_slave_1: entered promiscuous mode [ 184.133391][ T5426] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 184.139899][ T5426] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 184.198647][ T5426] team0: Port device team_slave_0 added [ 184.218621][ T5426] team0: Port device team_slave_1 added [ 184.242868][ T5426] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 184.246368][ T5426] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem. [ 184.258670][ T5426] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 184.266454][ T5426] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 184.269996][ T5426] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem. [ 184.283318][ T5426] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 184.341822][ T5426] hsr_slave_0: entered promiscuous mode [ 184.345458][ T5426] hsr_slave_1: entered promiscuous mode [ 184.348928][ T5426] debugfs: 'hsr0' already exists in 'hsr' [ 184.360846][ T5426] Cannot create hsr debugfs directory [ 185.228697][ T13] bridge_slave_1: left allmulticast mode [ 185.244092][ T13] bridge_slave_1: left promiscuous mode [ 185.247980][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 185.296005][ T13] bridge_slave_0: left allmulticast mode [ 185.299551][ T13] bridge_slave_0: left promiscuous mode [ 185.306405][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 185.447536][ T13] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 185.455819][ T13] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 185.462368][ T13] bond0 (unregistering): Released all slaves [ 185.474738][ T4664] Bluetooth: hci0: command tx timeout [ 185.603258][ T13] hsr_slave_0: left promiscuous mode [ 185.606516][ T13] hsr_slave_1: left promiscuous mode [ 185.617819][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 185.636643][ T13] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 185.650613][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 185.662337][ T13] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 185.687294][ T13] veth1_macvtap: left promiscuous mode [ 185.701082][ T13] veth0_macvtap: left promiscuous mode [ 185.704900][ T13] veth1_vlan: left promiscuous mode [ 185.709305][ T13] veth0_vlan: left promiscuous mode [ 186.042734][ T13] team0 (unregistering): Port device team_slave_1 removed [ 186.056854][ T13] team0 (unregistering): Port device team_slave_0 removed [ 186.478449][ T5426] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 186.502966][ T5426] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 186.517354][ T5426] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 186.534436][ T5426] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 186.708771][ T5426] 8021q: adding VLAN 0 to HW filter on device bond0 [ 186.727657][ T5426] 8021q: adding VLAN 0 to HW filter on device team0 [ 186.738373][ T13] bridge0: port 1(bridge_slave_0) entered blocking state [ 186.741884][ T13] bridge0: port 1(bridge_slave_0) entered forwarding state [ 186.753897][ T13] bridge0: port 2(bridge_slave_1) entered blocking state [ 186.757599][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state [ 186.954704][ T5426] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 186.995282][ T5426] veth0_vlan: entered promiscuous mode [ 187.007841][ T5426] veth1_vlan: entered promiscuous mode [ 187.041552][ T5426] veth0_macvtap: entered promiscuous mode [ 187.047820][ T5426] veth1_macvtap: entered promiscuous mode [ 187.066874][ T5426] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 187.079927][ T5426] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 187.092505][ T1078] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 187.097216][ T1078] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 187.115138][ T1078] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 187.119144][ T1078] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 187.187390][ T1078] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 187.202195][ T1078] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 187.232806][ T12] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 187.236792][ T12] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 qemu-system-x86_64: hw/ide/core.c:934: ide_dma_cb: Assertion `prep_size >= 0 && prep_size <= n * 512' failed. Connection to localhost closed by remote host. syzkaller build log: go env (err=) AR='ar' CC='gcc' CGO_CFLAGS='-O2 -g' CGO_CPPFLAGS='' CGO_CXXFLAGS='-O2 -g' CGO_ENABLED='1' CGO_FFLAGS='-O2 -g' CGO_LDFLAGS='-O2 -g' CXX='g++' GCCGO='gccgo' GO111MODULE='auto' GOAMD64='v1' GOARCH='amd64' GOAUTH='netrc' GOBIN='' GOCACHE='/syzkaller/.cache/go-build' GOCACHEPROG='' GODEBUG='' GOENV='/syzkaller/.config/go/env' GOEXE='' GOEXPERIMENT='' GOFIPS140='off' GOFLAGS='' GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build2163874498=/tmp/go-build -gno-record-gcc-switches' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMOD='/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mod' GOMODCACHE='/syzkaller/jobs/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs/linux/gopath' GOPRIVATE='' GOPROXY='https://proxy.golang.org,direct' GOROOT='/usr/local/go' GOSUMDB='sum.golang.org' GOTELEMETRY='local' GOTELEMETRYDIR='/syzkaller/.config/go/telemetry' GOTMPDIR='' GOTOOLCHAIN='auto' GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64' GOVCS='' GOVERSION='go1.26.0' GOWORK='' PKG_CONFIG='pkg-config' git status (err=) HEAD detached at 66aeb999f37a nothing to commit, working tree clean tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen make .descriptions tput: No value for $TERM and no -T specified tput: No value for $TERM and no -T specified Makefile:31: run command via tools/syz-env for best compatibility, see: Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env bin/syz-sysgen go fmt ./sys/... >/dev/null touch .descriptions GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=66aeb999f37ab41e95f08d1da821200313f71342 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241028-182907'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog mkdir -p ./bin/linux_amd64 g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \ -m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"66aeb999f37ab41e95f08d1da821200313f71342\" /usr/bin/ld: /tmp/ccnOsuWG.o: in function `test_cover_filter()': executor.cc:(.text+0x1693b): warning: the use of `tempnam' is dangerous, better use `mkstemp' /usr/bin/ld: /tmp/ccnOsuWG.o: in function `Connection::Connect(char const*, char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x386): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking