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 '10.128.1.44' (ED25519) to the list of known hosts. 2026/05/20 21:40:44 parsed 1 programs [ 34.056988][ T5620] cgroup: Unknown subsys name 'net' [ 34.101209][ T5620] cgroup: Unknown subsys name 'cpuset' [ 34.107961][ T5620] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 42.119342][ T5620] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 43.501310][ T5629] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.508682][ T5629] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.516504][ T5629] bridge_slave_0: entered allmulticast mode [ 43.523051][ T5629] bridge_slave_0: entered promiscuous mode [ 43.529709][ T5629] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.538476][ T5629] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.547140][ T5629] bridge_slave_1: entered allmulticast mode [ 43.553808][ T5629] bridge_slave_1: entered promiscuous mode [ 43.566230][ T5629] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 43.577039][ T5629] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 43.592479][ T5629] team0: Port device team_slave_0 added [ 43.599307][ T5629] team0: Port device team_slave_1 added [ 43.610273][ T5629] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 43.617909][ T5629] 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. [ 43.646817][ T5629] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 43.658407][ T5629] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 43.666076][ T5629] 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. [ 43.693298][ T5629] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 43.710882][ T5629] hsr_slave_0: entered promiscuous mode [ 43.716819][ T5629] hsr_slave_1: entered promiscuous mode [ 43.745469][ T5629] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 43.753598][ T5629] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 43.761907][ T5629] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 43.769573][ T5629] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 43.777317][ T5629] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 43.784884][ T5629] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 43.793408][ T5629] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 43.801328][ T5629] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 43.814572][ T5629] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.822441][ T5629] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.830448][ T5629] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.838028][ T5629] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.856405][ T5629] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.866357][ T69] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.874527][ T69] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.884602][ T5629] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.893135][ T34] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.901616][ T34] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.911750][ T69] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.919245][ T69] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.989824][ T5629] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 44.005950][ T5629] veth0_vlan: entered promiscuous mode [ 44.013760][ T5629] veth1_vlan: entered promiscuous mode [ 44.026018][ T5629] veth0_macvtap: entered promiscuous mode [ 44.033871][ T5629] veth1_macvtap: entered promiscuous mode [ 44.043291][ T5629] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 44.053372][ T5629] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 44.062824][ T12] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 44.071981][ T12] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 44.083436][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 44.093084][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 44.112820][ T5629] 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. [ 44.152646][ T55] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 44.222005][ T55] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 44.265515][ T55] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 44.301913][ T55] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 44.351734][ T69] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 44.359791][ T69] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 44.370285][ T69] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 44.378355][ T69] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 44.544619][ T5715] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 44.553287][ T5715] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 44.562033][ T5715] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 44.570553][ T5715] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 44.578201][ T5715] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 2026/05/20 21:40:57 executed programs: 0 [ 47.193818][ T55] bridge_slave_1: left allmulticast mode [ 47.200928][ T55] bridge_slave_1: left promiscuous mode [ 47.207341][ T55] bridge0: port 2(bridge_slave_1) entered disabled state [ 47.215250][ T55] bridge_slave_0: left allmulticast mode [ 47.221854][ T55] bridge_slave_0: left promiscuous mode [ 47.227516][ T55] bridge0: port 1(bridge_slave_0) entered disabled state [ 47.263872][ T55] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 47.273970][ T55] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 47.283344][ T55] bond0 (unregistering): Released all slaves [ 47.291005][ T5271] 8021q: adding VLAN 0 to HW filter on device eth1 [ 47.361493][ T55] hsr_slave_0: left promiscuous mode [ 47.367141][ T55] hsr_slave_1: left promiscuous mode [ 47.372769][ T55] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 47.381333][ T55] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 47.389210][ T55] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 47.397656][ T55] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 47.406174][ T55] veth1_macvtap: left promiscuous mode [ 47.411998][ T55] veth0_macvtap: left promiscuous mode [ 47.417781][ T55] veth1_vlan: left promiscuous mode [ 47.423163][ T55] veth0_vlan: left promiscuous mode [ 47.448894][ T55] team0 (unregistering): Port device team_slave_1 removed [ 47.457451][ T55] team0 (unregistering): Port device team_slave_0 removed [ 47.471752][ T5271] 8021q: adding VLAN 0 to HW filter on device eth2 [ 47.545026][ T5271] 8021q: adding VLAN 0 to HW filter on device eth3 [ 47.625536][ T5271] 8021q: adding VLAN 0 to HW filter on device eth4 [ 50.500246][ T4925] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 50.508503][ T4925] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 50.515995][ T4925] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 50.523721][ T4925] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 50.532130][ T4925] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 50.628447][ T5808] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.636883][ T5808] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.645773][ T5808] bridge_slave_0: entered allmulticast mode [ 50.652476][ T5808] bridge_slave_0: entered promiscuous mode [ 50.659317][ T5808] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.667969][ T5808] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.675521][ T5808] bridge_slave_1: entered allmulticast mode [ 50.682504][ T5808] bridge_slave_1: entered promiscuous mode [ 50.693704][ T5808] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 50.704319][ T5808] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 50.717811][ T5808] team0: Port device team_slave_0 added [ 50.724569][ T5808] team0: Port device team_slave_1 added [ 50.736073][ T5808] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 50.743369][ T5808] 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. [ 50.769776][ T5808] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 50.782118][ T5808] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 50.789350][ T5808] 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. [ 50.818716][ T5808] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 50.838784][ T5808] hsr_slave_0: entered promiscuous mode [ 50.845830][ T5808] hsr_slave_1: entered promiscuous mode [ 51.054771][ T5808] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 51.063757][ T5808] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 51.072469][ T5808] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 51.080547][ T5808] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 51.088689][ T5808] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 51.097417][ T5808] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 51.106001][ T5808] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 51.114356][ T5808] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 51.128845][ T5808] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.135960][ T5808] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.143849][ T5808] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.151362][ T5808] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.173796][ T5808] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.183903][ T34] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.192920][ T34] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.206209][ T5808] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.216998][ T34] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.224789][ T34] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.238425][ T34] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.245892][ T34] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.343670][ T5808] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.360749][ T5808] veth0_vlan: entered promiscuous mode [ 51.368978][ T5808] veth1_vlan: entered promiscuous mode [ 51.382882][ T5808] veth0_macvtap: entered promiscuous mode [ 51.391142][ T5808] veth1_macvtap: entered promiscuous mode [ 51.401407][ T5808] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 51.411739][ T5808] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 51.421756][ T34] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.444418][ T34] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.457491][ T12] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.470813][ T12] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 51.479014][ T34] netdevsim netdevsim0 netdevsim2: 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) [ 51.490615][ T34] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 51.503361][ T69] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 51.511470][ T69] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 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-build2967923086=/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/cc654fFI.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