SYZFAIL: failed to recv rpc SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) no interfaces have a carrier [ 44.492167][ T5479] 8021q: adding VLAN 0 to HW filter on device bond0 [ 44.508253][ T5479] eql: remember to turn off Van-Jacobson compression on your slave devices Starting crond: OK Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.117' (ED25519) to the list of known hosts. 2026/02/23 09:22:52 parsed 1 programs syzkaller login: [ 73.667703][ T5813] cgroup: Unknown subsys name 'net' [ 73.801700][ T5813] cgroup: Unknown subsys name 'cpuset' [ 73.810423][ T5813] cgroup: Unknown subsys name 'rlimit' [ 73.816252][ T5813] cgroup: Unknown subsys name 'memory' Setting up swapspace version 1, size = 127995904 bytes [ 75.096708][ T5813] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 77.996095][ T5830] chnl_net:caif_netlink_parms(): no params data found [ 78.075879][ T5851] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 78.085107][ T5851] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 78.094427][ T5851] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 78.104104][ T5851] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 78.111822][ T5851] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 78.288184][ T5830] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.301199][ T5830] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.309589][ T5830] bridge_slave_0: entered allmulticast mode [ 78.317656][ T5830] bridge_slave_0: entered promiscuous mode [ 78.424823][ T5830] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.432860][ T5830] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.440097][ T5830] bridge_slave_1: entered allmulticast mode [ 78.447556][ T5830] bridge_slave_1: entered promiscuous mode [ 78.541883][ T5830] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.580350][ T5830] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.675406][ T5830] team0: Port device team_slave_0 added [ 78.705501][ T5830] team0: Port device team_slave_1 added [ 78.718141][ T66] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 78.731633][ T66] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 78.789529][ T5830] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.796518][ T5830] 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. [ 78.830053][ T5830] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.904854][ T5830] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.912356][ T5830] 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. [ 78.944711][ T5830] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 79.022399][ T5830] hsr_slave_0: entered promiscuous mode [ 79.033089][ T5830] hsr_slave_1: entered promiscuous mode [ 79.047590][ T75] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 79.063479][ T75] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 79.902061][ T5830] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 80.215176][ T5830] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 80.254177][ T5830] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 80.274885][ T5830] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 80.664239][ T5830] 8021q: adding VLAN 0 to HW filter on device bond0 [ 80.743538][ T5830] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.763650][ T75] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.771460][ T75] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.806728][ T75] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.813974][ T75] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.018967][ T5830] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.073013][ T5830] veth0_vlan: entered promiscuous mode [ 81.083022][ T5830] veth1_vlan: entered promiscuous mode [ 81.115993][ T5830] veth0_macvtap: entered promiscuous mode [ 81.127752][ T5830] veth1_macvtap: entered promiscuous mode [ 81.145398][ T5830] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 81.160487][ T5830] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 81.174975][ T1001] netdevsim netdevsim2 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.184836][ T1001] netdevsim netdevsim2 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.194778][ T1001] netdevsim netdevsim2 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 81.210552][ T1001] netdevsim netdevsim2 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/02/23 09:23:02 executed programs: 0 [ 81.339182][ T5851] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 81.347149][ T5851] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 81.355698][ T5851] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 81.364777][ T5851] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 81.373617][ T5851] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 81.556447][ T5920] chnl_net:caif_netlink_parms(): no params data found [ 81.624287][ T5920] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.631666][ T5920] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.638899][ T5920] bridge_slave_0: entered allmulticast mode [ 81.645818][ T5920] bridge_slave_0: entered promiscuous mode [ 81.654367][ T5920] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.661742][ T5920] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.669363][ T5920] bridge_slave_1: entered allmulticast mode [ 81.676322][ T5920] bridge_slave_1: entered promiscuous mode [ 81.703379][ T5920] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 81.716240][ T5920] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 81.746332][ T5920] team0: Port device team_slave_0 added [ 81.754847][ T5920] team0: Port device team_slave_1 added [ 81.782891][ T5920] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 81.789971][ T5920] 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. [ 81.816449][ T5920] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 81.831186][ T5920] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 81.838229][ T5920] 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. [ 81.864607][ T5920] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 81.918680][ T5920] hsr_slave_0: entered promiscuous mode [ 81.925628][ T5920] hsr_slave_1: entered promiscuous mode [ 81.932682][ T5920] debugfs: 'hsr0' already exists in 'hsr' [ 81.939123][ T5920] Cannot create hsr debugfs directory [ 82.161169][ T5920] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 82.171701][ T5920] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 82.181926][ T5920] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 82.191941][ T5920] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 82.257195][ T5920] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.277230][ T5920] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.288724][ T1001] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.296028][ T1001] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.320848][ T1001] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.327969][ T1001] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.472894][ T5920] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.512183][ T5920] veth0_vlan: entered promiscuous mode [ 82.523181][ T5920] veth1_vlan: entered promiscuous mode [ 82.548039][ T5920] veth0_macvtap: entered promiscuous mode [ 82.558013][ T5920] veth1_macvtap: entered promiscuous mode [ 82.575248][ T5920] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.589381][ T5920] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.603079][ T1001] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.614153][ T1001] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.629707][ T1001] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.638795][ T1001] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.691395][ T1001] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.703416][ T1001] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.727657][ T66] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 82.736029][ T66] 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) [ 83.295554][ T1001] netdevsim netdevsim2 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 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-build252229999=/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='go1.24.4' GOWORK='' PKG_CONFIG='pkg-config' git status (err=) HEAD detached at 4e1406b4def 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=4e1406b4defac0e2a9d9424c70706f79a7750cf3 -X github.com/google/syzkaller/prog.gitRevisionDate=20251106-151142" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=4e1406b4defac0e2a9d9424c70706f79a7750cf3 -X github.com/google/syzkaller/prog.gitRevisionDate=20251106-151142" ./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=4e1406b4defac0e2a9d9424c70706f79a7750cf3 -X github.com/google/syzkaller/prog.gitRevisionDate=20251106-151142" -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=\"4e1406b4defac0e2a9d9424c70706f79a7750cf3\" /usr/bin/ld: /tmp/cc9l5Rcx.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