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 '10.128.1.196' (ED25519) to the list of known hosts. 2026/04/16 20:50:38 parsed 1 programs [ 77.598131][ T5827] cgroup: Unknown subsys name 'net' [ 77.726078][ T5827] cgroup: Unknown subsys name 'cpuset' [ 77.735193][ T5827] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 79.142891][ T5827] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 81.676245][ T5834] 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. [ 83.304754][ T5880] chnl_net:caif_netlink_parms(): no params data found [ 83.399289][ T5880] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.407648][ T5880] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.415957][ T5880] bridge_slave_0: entered allmulticast mode [ 83.425829][ T5880] bridge_slave_0: entered promiscuous mode [ 83.442218][ T5880] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.449705][ T5880] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.457137][ T5880] bridge_slave_1: entered allmulticast mode [ 83.464236][ T5880] bridge_slave_1: entered promiscuous mode [ 83.495807][ T5880] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.507841][ T5880] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 83.542066][ T5880] team0: Port device team_slave_0 added [ 83.550402][ T5880] team0: Port device team_slave_1 added [ 83.580152][ T5880] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 83.587358][ T5880] 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. [ 83.614576][ T5880] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 83.627615][ T5880] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 83.634665][ T5880] 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. [ 83.661319][ T5880] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 83.700483][ T5880] hsr_slave_0: entered promiscuous mode [ 83.707053][ T5880] hsr_slave_1: entered promiscuous mode [ 83.832891][ T5880] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 83.846118][ T5880] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 83.854262][ T5880] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 83.864127][ T5880] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 83.871833][ T5880] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 83.881960][ T5880] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 83.889739][ T5880] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 83.899056][ T5880] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 83.929579][ T5880] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.937094][ T5880] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.944988][ T5880] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.952083][ T5880] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.999922][ T5880] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.019343][ T104] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.028008][ T104] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.042098][ T5880] 8021q: adding VLAN 0 to HW filter on device team0 [ 84.053949][ T104] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.061100][ T104] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.076860][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.084005][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.242041][ T5880] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.286253][ T5880] veth0_vlan: entered promiscuous mode [ 84.298089][ T5880] veth1_vlan: entered promiscuous mode [ 84.327595][ T5880] veth0_macvtap: entered promiscuous mode [ 84.337383][ T5880] veth1_macvtap: entered promiscuous mode [ 84.356632][ T5880] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.371173][ T5880] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 84.389081][ T104] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.399021][ T104] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.410987][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.429888][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.568664][ T104] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 84.638771][ T104] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 84.742245][ T104] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 84.818180][ T104] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 85.326845][ T50] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 85.336166][ T50] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 85.344015][ T50] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 85.353569][ T50] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 85.361259][ T50] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 85.645653][ T3474] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.655475][ T3474] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 85.688007][ T3520] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 85.697206][ T3520] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 2026/04/16 20:50:48 executed programs: 0 [ 86.146731][ T5146] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 86.157675][ T5146] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 86.165887][ T5146] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 86.175725][ T5146] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 86.183320][ T5146] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 86.323679][ T5936] chnl_net:caif_netlink_parms(): no params data found [ 86.397100][ T5936] bridge0: port 1(bridge_slave_0) entered blocking state [ 86.404517][ T5936] bridge0: port 1(bridge_slave_0) entered disabled state [ 86.411700][ T5936] bridge_slave_0: entered allmulticast mode [ 86.420107][ T5936] bridge_slave_0: entered promiscuous mode [ 86.430677][ T5936] bridge0: port 2(bridge_slave_1) entered blocking state [ 86.438594][ T5936] bridge0: port 2(bridge_slave_1) entered disabled state [ 86.446361][ T5936] bridge_slave_1: entered allmulticast mode [ 86.453710][ T5936] bridge_slave_1: entered promiscuous mode [ 86.482227][ T5936] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 86.494547][ T5936] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 86.528647][ T5936] team0: Port device team_slave_0 added [ 86.537876][ T5936] team0: Port device team_slave_1 added [ 86.564707][ T5936] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 86.571873][ T5936] 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. [ 86.598451][ T5936] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 86.610516][ T5936] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 86.617600][ T5936] 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. [ 86.644172][ T5936] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 86.683546][ T5936] hsr_slave_0: entered promiscuous mode [ 86.689952][ T5936] hsr_slave_1: entered promiscuous mode [ 86.696871][ T5936] debugfs: 'hsr0' already exists in 'hsr' [ 86.702795][ T5936] Cannot create hsr debugfs directory [ 87.168227][ T104] bridge_slave_1: left allmulticast mode [ 87.174611][ T104] bridge_slave_1: left promiscuous mode [ 87.181849][ T104] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.194066][ T104] bridge_slave_0: left allmulticast mode [ 87.199957][ T104] bridge_slave_0: left promiscuous mode [ 87.206188][ T104] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.377295][ T104] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 87.388106][ T104] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 87.398188][ T104] bond0 (unregistering): Released all slaves [ 87.488062][ T104] hsr_slave_0: left promiscuous mode [ 87.494379][ T104] hsr_slave_1: left promiscuous mode [ 87.500822][ T104] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 87.508979][ T104] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 87.517973][ T104] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 87.528291][ T104] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 87.551507][ T104] veth1_macvtap: left promiscuous mode [ 87.557914][ T104] veth0_macvtap: left promiscuous mode [ 87.564503][ T104] veth1_vlan: left promiscuous mode [ 87.569981][ T104] veth0_vlan: left promiscuous mode [ 87.871486][ T104] team0 (unregistering): Port device team_slave_1 removed [ 87.901342][ T104] team0 (unregistering): Port device team_slave_0 removed [ 88.037507][ T5489] 8021q: adding VLAN 0 to HW filter on device eth1 [ 88.265800][ T50] Bluetooth: hci0: command tx timeout [ 88.327304][ T5936] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 88.344222][ T5936] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 88.352094][ T5936] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 88.363825][ T5936] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 88.371977][ T5936] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 88.390281][ T5936] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 88.400594][ T5936] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 88.413019][ T5936] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 88.751642][ T5936] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.775718][ T5936] 8021q: adding VLAN 0 to HW filter on device team0 [ 88.791002][ T3474] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.798399][ T3474] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.825829][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.833002][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.126278][ T5936] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 89.168314][ T5936] veth0_vlan: entered promiscuous mode [ 89.182061][ T5936] veth1_vlan: entered promiscuous mode [ 89.218264][ T5936] veth0_macvtap: entered promiscuous mode [ 89.227186][ T5936] veth1_macvtap: entered promiscuous mode [ 89.244601][ T5936] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 89.257775][ T5936] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 89.271392][ T3474] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.280944][ T3474] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.291586][ T3474] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.301641][ T3474] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.360241][ T3474] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.368929][ T3474] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.410839][ T3474] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.420575][ T3474] 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-build1102379478=/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 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/ccqWGQW8.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