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 '10.128.0.21' (ED25519) to the list of known hosts. 2026/03/26 16:43:43 parsed 1 programs [ 87.926544][ T5843] cgroup: Unknown subsys name 'net' [ 88.062211][ T5843] cgroup: Unknown subsys name 'cpuset' [ 88.071816][ T5843] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 89.827066][ T5843] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 92.085381][ T10] cfg80211: failed to load regulatory.db [ 93.125421][ T5863] 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. [ 95.238080][ T5916] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 95.247029][ T5916] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 95.255751][ T5916] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 95.264946][ T5916] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 95.275184][ T5916] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 95.804401][ T58] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 95.828279][ T58] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 96.156114][ T12] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 96.166356][ T12] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 96.534457][ T5912] chnl_net:caif_netlink_parms(): no params data found [ 96.842018][ T5912] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.855354][ T5912] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.865033][ T5912] bridge_slave_0: entered allmulticast mode [ 96.873762][ T5912] bridge_slave_0: entered promiscuous mode [ 96.888228][ T5912] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.895949][ T5912] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.903386][ T5912] bridge_slave_1: entered allmulticast mode [ 96.911855][ T5912] bridge_slave_1: entered promiscuous mode [ 96.957901][ T5912] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 96.972627][ T5912] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 97.011657][ T5912] team0: Port device team_slave_0 added [ 97.019704][ T5912] team0: Port device team_slave_1 added [ 97.049920][ T5912] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 97.057005][ T5912] 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. [ 97.083498][ T5912] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 97.102166][ T5912] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 97.109501][ T5912] 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. [ 97.135816][ T5912] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 97.182944][ T5912] hsr_slave_0: entered promiscuous mode [ 97.189430][ T5912] hsr_slave_1: entered promiscuous mode [ 97.338670][ T5912] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 97.352041][ T5912] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 97.360012][ T5160] Bluetooth: hci0: command tx timeout [ 97.371141][ T5912] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 97.382284][ T5912] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 97.466986][ T5912] 8021q: adding VLAN 0 to HW filter on device bond0 [ 97.492513][ T5912] 8021q: adding VLAN 0 to HW filter on device team0 [ 97.508872][ T48] bridge0: port 1(bridge_slave_0) entered blocking state [ 97.516790][ T48] bridge0: port 1(bridge_slave_0) entered forwarding state [ 97.535422][ T48] bridge0: port 2(bridge_slave_1) entered blocking state [ 97.542580][ T48] bridge0: port 2(bridge_slave_1) entered forwarding state [ 97.736072][ T5912] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 97.780275][ T5912] veth0_vlan: entered promiscuous mode [ 97.793978][ T5912] veth1_vlan: entered promiscuous mode [ 97.825150][ T5912] veth0_macvtap: entered promiscuous mode [ 97.834672][ T5912] veth1_macvtap: entered promiscuous mode [ 97.857284][ T5912] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 97.874665][ T5912] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 97.892497][ T58] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 97.902095][ T58] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 97.913943][ T13] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 97.923526][ T13] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/03/26 16:43:56 executed programs: 0 [ 98.103609][ T5916] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 98.105612][ T58] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 98.112761][ T5916] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 98.132269][ T5916] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 98.141368][ T5916] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 98.149365][ T5916] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 98.189009][ T58] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 98.259628][ T58] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 98.351866][ T58] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 98.413859][ T5952] chnl_net:caif_netlink_parms(): no params data found [ 98.487887][ T5952] bridge0: port 1(bridge_slave_0) entered blocking state [ 98.495657][ T5952] bridge0: port 1(bridge_slave_0) entered disabled state [ 98.503272][ T5952] bridge_slave_0: entered allmulticast mode [ 98.510663][ T5952] bridge_slave_0: entered promiscuous mode [ 98.521246][ T5952] bridge0: port 2(bridge_slave_1) entered blocking state [ 98.528712][ T5952] bridge0: port 2(bridge_slave_1) entered disabled state [ 98.536085][ T5952] bridge_slave_1: entered allmulticast mode [ 98.543823][ T5952] bridge_slave_1: entered promiscuous mode [ 98.580131][ T5952] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 98.593673][ T5952] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 98.626621][ T5952] team0: Port device team_slave_0 added [ 98.634932][ T5952] team0: Port device team_slave_1 added [ 98.666659][ T5952] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 98.674147][ T5952] 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. [ 98.700319][ T5952] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 98.713855][ T5952] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 98.721250][ T5952] 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. [ 98.748167][ T5952] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 98.803229][ T5952] hsr_slave_0: entered promiscuous mode [ 98.809585][ T5952] hsr_slave_1: entered promiscuous mode [ 98.815876][ T5952] debugfs: 'hsr0' already exists in 'hsr' [ 98.822296][ T5952] Cannot create hsr debugfs directory [ 99.439093][ T5916] Bluetooth: hci0: command tx timeout [ 100.239292][ T5916] Bluetooth: hci1: command tx timeout [ 100.800794][ T58] bridge_slave_1: left allmulticast mode [ 100.810021][ T58] bridge_slave_1: left promiscuous mode [ 100.817639][ T58] bridge0: port 2(bridge_slave_1) entered disabled state [ 100.831080][ T58] bridge_slave_0: left allmulticast mode [ 100.836782][ T58] bridge_slave_0: left promiscuous mode [ 100.842770][ T58] bridge0: port 1(bridge_slave_0) entered disabled state [ 100.983565][ T58] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 100.994964][ T58] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 101.005428][ T58] bond0 (unregistering): Released all slaves [ 101.078113][ T58] hsr_slave_0: left promiscuous mode [ 101.085936][ T58] hsr_slave_1: left promiscuous mode [ 101.092332][ T58] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 101.099856][ T58] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 101.108141][ T58] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 101.115811][ T58] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 101.132743][ T58] veth1_macvtap: left promiscuous mode [ 101.138324][ T58] veth0_macvtap: left promiscuous mode [ 101.144720][ T58] veth1_vlan: left promiscuous mode [ 101.150355][ T58] veth0_vlan: left promiscuous mode [ 101.332504][ T58] team0 (unregistering): Port device team_slave_1 removed [ 101.347995][ T58] team0 (unregistering): Port device team_slave_0 removed [ 101.519140][ T5916] Bluetooth: hci0: command tx timeout [ 101.886135][ T5952] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 101.902569][ T5952] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 101.915370][ T5952] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 101.934181][ T5952] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 102.062924][ T5952] 8021q: adding VLAN 0 to HW filter on device bond0 [ 102.104489][ T5952] 8021q: adding VLAN 0 to HW filter on device team0 [ 102.122280][ T13] bridge0: port 1(bridge_slave_0) entered blocking state [ 102.129534][ T13] bridge0: port 1(bridge_slave_0) entered forwarding state [ 102.146230][ T13] bridge0: port 2(bridge_slave_1) entered blocking state [ 102.153422][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state [ 102.323363][ T5916] Bluetooth: hci1: command tx timeout [ 102.430848][ T5952] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 102.515935][ T5952] veth0_vlan: entered promiscuous mode [ 102.532701][ T5952] veth1_vlan: entered promiscuous mode [ 102.582514][ T5952] veth0_macvtap: entered promiscuous mode [ 102.594387][ T5952] veth1_macvtap: entered promiscuous mode [ 102.623411][ T5952] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 102.644571][ T5952] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 102.668179][ T13] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.694844][ T13] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.713519][ T13] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.746030][ T13] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.811245][ T12] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 102.829452][ T12] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 102.863526][ T48] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 102.873480][ T48] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 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-build2079924247=/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 d6526ea3e 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/ccd7YuOw.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