SYZFAIL: failed to recv rpc SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) Warning: Permanently added '10.128.0.127' (ED25519) to the list of known hosts. 2026/08/04 02:42:29 parsed 1 programs [ 92.393017][ T9] cfg80211: failed to load regulatory.db [ 93.326725][ T5624] cgroup: Unknown subsys name 'net' [ 93.453581][ T5624] cgroup: Unknown subsys name 'cpuset' [ 93.463001][ T5624] cgroup: Unknown subsys name 'rlimit' [ 93.468814][ T5624] cgroup: Unknown subsys name 'memory' Setting up swapspace version 1, size = 127995904 bytes [ 95.223873][ T5624] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 98.717427][ T12] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 98.725906][ T12] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 98.775978][ T35] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 98.786583][ T35] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 100.015471][ T50] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 100.026691][ T50] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 100.035923][ T50] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 100.044973][ T50] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 100.052807][ T50] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 102.277788][ T5697] bridge0: port 1(bridge_slave_0) entered blocking state [ 102.285925][ T5697] bridge0: port 1(bridge_slave_0) entered disabled state [ 102.293657][ T5697] bridge_slave_0: entered allmulticast mode [ 102.301554][ T5697] bridge_slave_0: entered promiscuous mode [ 102.312412][ T5697] bridge0: port 2(bridge_slave_1) entered blocking state [ 102.320216][ T5697] bridge0: port 2(bridge_slave_1) entered disabled state [ 102.327489][ T5697] bridge_slave_1: entered allmulticast mode [ 102.335271][ T5697] bridge_slave_1: entered promiscuous mode [ 102.371853][ T5697] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 102.384792][ T5697] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 102.425247][ T5697] team0: Port device team_slave_0 added [ 102.434661][ T5697] team0: Port device team_slave_1 added [ 102.469519][ T5697] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 102.476527][ T5697] 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. [ 102.502996][ T5697] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 102.517042][ T5697] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 102.525727][ T5697] 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. [ 102.551841][ T5697] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 102.604710][ T5697] hsr_slave_0: entered promiscuous mode [ 102.612445][ T5697] hsr_slave_1: entered promiscuous mode [ 102.802238][ T5697] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 102.817332][ T5697] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 102.825982][ T5697] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 102.837210][ T5697] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 102.845834][ T5697] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 102.860837][ T5697] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 102.871006][ T5697] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 102.882604][ T5697] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 102.923568][ T5697] bridge0: port 2(bridge_slave_1) entered blocking state [ 102.931672][ T5697] bridge0: port 2(bridge_slave_1) entered forwarding state [ 102.940873][ T5697] bridge0: port 1(bridge_slave_0) entered blocking state [ 102.948112][ T5697] bridge0: port 1(bridge_slave_0) entered forwarding state [ 103.024878][ T5697] 8021q: adding VLAN 0 to HW filter on device bond0 [ 103.048800][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 103.060547][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 103.085686][ T5697] 8021q: adding VLAN 0 to HW filter on device team0 [ 103.102411][ T35] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.109692][ T35] bridge0: port 1(bridge_slave_0) entered forwarding state [ 103.127531][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.134857][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 103.545881][ T5697] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 103.605667][ T5697] veth0_vlan: entered promiscuous mode [ 103.621979][ T5697] veth1_vlan: entered promiscuous mode [ 103.668495][ T5697] veth0_macvtap: entered promiscuous mode [ 103.681494][ T5697] veth1_macvtap: entered promiscuous mode [ 103.704187][ T5697] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 103.725356][ T5697] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 103.800122][ T35] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 103.812238][ T35] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 103.822795][ T35] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 103.835440][ T35] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 103.971114][ T35] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 104.081147][ T35] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 104.231203][ T35] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 104.361447][ T35] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2026/08/04 02:42:45 executed programs: 0 [ 104.938653][ T4930] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 104.950159][ T4930] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 104.963573][ T4930] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 104.973941][ T4930] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 104.983325][ T4930] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 105.532711][ T5743] bridge0: port 1(bridge_slave_0) entered blocking state [ 105.540183][ T5743] bridge0: port 1(bridge_slave_0) entered disabled state [ 105.547509][ T5743] bridge_slave_0: entered allmulticast mode [ 105.555381][ T5743] bridge_slave_0: entered promiscuous mode [ 105.564060][ T5743] bridge0: port 2(bridge_slave_1) entered blocking state [ 105.571655][ T5743] bridge0: port 2(bridge_slave_1) entered disabled state [ 105.580368][ T5743] bridge_slave_1: entered allmulticast mode [ 105.587807][ T5743] bridge_slave_1: entered promiscuous mode [ 105.632072][ T5743] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 105.644644][ T5743] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 105.684097][ T5743] team0: Port device team_slave_0 added [ 105.692458][ T5743] team0: Port device team_slave_1 added [ 105.726805][ T5743] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 105.734124][ T5743] 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. [ 105.760320][ T5743] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 105.774287][ T5743] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 105.781718][ T5743] 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. [ 105.810198][ T5743] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 105.902100][ T5743] hsr_slave_0: entered promiscuous mode [ 105.910929][ T5743] hsr_slave_1: entered promiscuous mode [ 105.917212][ T5743] debugfs: 'hsr0' already exists in 'hsr' [ 105.924211][ T5743] Cannot create hsr debugfs directory [ 106.019961][ T35] bridge_slave_1: left allmulticast mode [ 106.026875][ T35] bridge_slave_1: left promiscuous mode [ 106.034814][ T35] bridge0: port 2(bridge_slave_1) entered disabled state [ 106.047954][ T35] bridge_slave_0: left allmulticast mode [ 106.054308][ T35] bridge_slave_0: left promiscuous mode [ 106.060518][ T35] bridge0: port 1(bridge_slave_0) entered disabled state [ 106.206148][ T35] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 106.218100][ T35] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 106.241531][ T35] bond0 (unregistering): Released all slaves [ 106.361598][ T35] hsr_slave_0: left promiscuous mode [ 106.368177][ T35] hsr_slave_1: left promiscuous mode [ 106.374785][ T35] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 106.383064][ T35] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 106.394434][ T35] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 106.403343][ T35] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 106.421728][ T35] veth1_macvtap: left promiscuous mode [ 106.428439][ T35] veth0_macvtap: left promiscuous mode [ 106.434575][ T35] veth1_vlan: left promiscuous mode [ 106.440479][ T35] veth0_vlan: left promiscuous mode [ 106.639195][ T35] team0 (unregistering): Port device team_slave_1 removed [ 106.656216][ T35] team0 (unregistering): Port device team_slave_0 removed [ 107.030403][ T4930] Bluetooth: hci0: command tx timeout [ 107.286771][ T5743] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 107.308626][ T5743] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 107.425536][ T5743] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 107.436215][ T5743] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 107.444869][ T5743] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 107.464526][ T5743] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 107.475496][ T5743] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 107.488367][ T5743] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 107.694680][ T5743] 8021q: adding VLAN 0 to HW filter on device bond0 [ 107.722489][ T5743] 8021q: adding VLAN 0 to HW filter on device team0 [ 107.739606][ T1345] bridge0: port 1(bridge_slave_0) entered blocking state [ 107.746876][ T1345] bridge0: port 1(bridge_slave_0) entered forwarding state [ 107.773972][ T1345] bridge0: port 2(bridge_slave_1) entered blocking state [ 107.781411][ T1345] bridge0: port 2(bridge_slave_1) entered forwarding state [ 108.285192][ T5743] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 108.343234][ T5743] veth0_vlan: entered promiscuous mode [ 108.357581][ T5743] veth1_vlan: entered promiscuous mode [ 108.392981][ T5743] veth0_macvtap: entered promiscuous mode [ 108.409113][ T5743] veth1_macvtap: entered promiscuous mode [ 108.432223][ T5743] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 108.448657][ T5743] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 108.481768][ T114] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.494758][ T114] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.565704][ T35] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.574896][ T35] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 108.610364][ T1345] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.619877][ T114] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.632001][ T114] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 108.649104][ T48] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) 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-build689822262=/tmp/go-build -gno-record-gcc-switches' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod' GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs-2/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 d6526ea3e6a 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}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" ./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 touch .descriptions GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" -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 -DGOOS_linux=1 -DGOARCH_amd64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"d6526ea3e6ad9081c902859bbb80f9f840377cb4\" /usr/bin/ld: /tmp/ccRTnuYh.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 ./tools/check-syzos.sh 2>/dev/null