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 '10.128.0.251' (ED25519) to the list of known hosts. 2026/04/17 09:01:24 parsed 1 programs [ 71.290950][ T5824] cgroup: Unknown subsys name 'net' [ 71.425494][ T5824] cgroup: Unknown subsys name 'cpuset' [ 71.434624][ T5824] cgroup: Unknown subsys name 'rlimit' [ 71.440331][ T5824] cgroup: Unknown subsys name 'memory' [ 71.618737][ T1301] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.627710][ T1301] ieee802154 phy1 wpan1: encryption failed: -22 Setting up swapspace version 1, size = 127995904 bytes [ 72.824531][ T5824] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 75.619358][ T3473] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.635348][ T3473] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.723739][ T48] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.759654][ T48] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.502408][ T5876] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 76.514138][ T5876] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 76.523531][ T5876] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 76.534872][ T5876] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 76.544582][ T5876] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 77.769513][ T5881] chnl_net:caif_netlink_parms(): no params data found [ 78.185093][ T5881] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.194592][ T5881] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.202138][ T5881] bridge_slave_0: entered allmulticast mode [ 78.210194][ T5881] bridge_slave_0: entered promiscuous mode [ 78.240196][ T5881] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.247430][ T5881] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.254782][ T5881] bridge_slave_1: entered allmulticast mode [ 78.263113][ T5881] bridge_slave_1: entered promiscuous mode [ 78.344089][ T5881] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.431762][ T5881] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.486696][ T5881] team0: Port device team_slave_0 added [ 78.502585][ T5881] team0: Port device team_slave_1 added [ 78.579164][ T5881] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 78.591276][ T5881] 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. [ 78.630207][ T5881] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 78.656493][ T5881] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 78.664984][ T5881] 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. [ 78.691458][ T5881] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 78.741187][ T5881] hsr_slave_0: entered promiscuous mode [ 78.749859][ T5881] hsr_slave_1: entered promiscuous mode [ 78.872404][ T5881] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 78.884859][ T5881] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 78.893622][ T5881] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 78.903634][ T5881] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 78.914766][ T5881] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 78.926632][ T5881] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 78.935078][ T5881] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 78.945264][ T5881] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 79.014878][ T5881] 8021q: adding VLAN 0 to HW filter on device bond0 [ 79.033462][ T5881] 8021q: adding VLAN 0 to HW filter on device team0 [ 79.048014][ T989] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.055801][ T989] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.071385][ T48] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.078513][ T48] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.225095][ T5881] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 79.265090][ T5881] veth0_vlan: entered promiscuous mode [ 79.276935][ T5881] veth1_vlan: entered promiscuous mode [ 79.303415][ T5881] veth0_macvtap: entered promiscuous mode [ 79.313081][ T5881] veth1_macvtap: entered promiscuous mode [ 79.330051][ T5881] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 79.346613][ T5881] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 79.360578][ T48] netdevsim netdevsim1 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.370283][ T48] netdevsim netdevsim1 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.383923][ T48] netdevsim netdevsim1 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 79.392795][ T48] netdevsim netdevsim1 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/04/17 09:01:34 executed programs: 0 [ 79.529720][ T5142] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 79.545955][ T5142] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 79.554803][ T5142] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 79.563782][ T5142] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 79.571353][ T5142] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 79.718283][ T5932] chnl_net:caif_netlink_parms(): no params data found [ 79.791327][ T5932] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.799016][ T5932] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.806497][ T5932] bridge_slave_0: entered allmulticast mode [ 79.817482][ T5932] bridge_slave_0: entered promiscuous mode [ 79.825940][ T5932] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.833239][ T5932] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.840394][ T5932] bridge_slave_1: entered allmulticast mode [ 79.847807][ T5932] bridge_slave_1: entered promiscuous mode [ 79.880992][ T5932] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 79.893651][ T5932] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 79.923986][ T5932] team0: Port device team_slave_0 added [ 79.931384][ T5932] team0: Port device team_slave_1 added [ 79.959067][ T5932] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 79.966267][ T5932] 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. [ 79.993284][ T5932] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.005219][ T5932] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.012369][ T5932] 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. [ 80.038361][ T5932] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.077678][ T5932] hsr_slave_0: entered promiscuous mode [ 80.084035][ T5932] hsr_slave_1: entered promiscuous mode [ 80.090004][ T5932] debugfs: 'hsr0' already exists in 'hsr' [ 80.096788][ T5932] Cannot create hsr debugfs directory [ 80.222654][ T5932] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 80.232856][ T5932] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 80.240447][ T5932] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 80.251122][ T5932] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 80.259735][ T5932] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 80.268848][ T5932] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 80.277221][ T5932] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 80.286137][ T5932] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 80.353965][ T5932] 8021q: adding VLAN 0 to HW filter on device bond0 [ 80.376773][ T5932] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.389040][ T3157] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.396464][ T3157] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.410347][ T3473] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.417575][ T3473] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.579784][ T5932] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 80.628752][ T5932] veth0_vlan: entered promiscuous mode [ 80.640728][ T5932] veth1_vlan: entered promiscuous mode [ 80.674948][ T5932] veth0_macvtap: entered promiscuous mode [ 80.684261][ T5932] veth1_macvtap: entered promiscuous mode [ 80.705346][ T5932] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 80.718942][ T5932] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 80.736123][ T48] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.745198][ T48] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.757176][ T48] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.766665][ T48] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 80.834347][ T3157] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.843731][ T3157] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 80.870738][ T3473] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 80.879352][ T3473] 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) [ 81.495533][ T3473] netdevsim netdevsim1 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-build4167276395=/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 d6526ea3e6 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/ccMeTErq.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