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 '10.128.1.172' (ED25519) to the list of known hosts. 2026/04/30 12:49:26 parsed 1 programs [ 78.581168][ T5617] cgroup: Unknown subsys name 'net' [ 78.678493][ T5617] cgroup: Unknown subsys name 'cpuset' [ 78.687690][ T5617] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 80.032556][ T5617] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 82.943242][ T5630] 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. [ 83.062281][ T50] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 83.076191][ T50] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 83.085325][ T50] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 83.094576][ T50] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 83.104084][ T50] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 84.199482][ T5654] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.207733][ T5654] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.216747][ T5654] bridge_slave_0: entered allmulticast mode [ 84.223809][ T5654] bridge_slave_0: entered promiscuous mode [ 84.233002][ T5654] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.240220][ T5654] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.247416][ T5654] bridge_slave_1: entered allmulticast mode [ 84.254439][ T5654] bridge_slave_1: entered promiscuous mode [ 84.282622][ T5654] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 84.294237][ T5654] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 84.323883][ T5654] team0: Port device team_slave_0 added [ 84.332696][ T5654] team0: Port device team_slave_1 added [ 84.359292][ T5654] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 84.366295][ T5654] 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. [ 84.392330][ T5654] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 84.404754][ T5654] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 84.411770][ T5654] 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. [ 84.438023][ T5654] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 84.478401][ T5654] hsr_slave_0: entered promiscuous mode [ 84.484735][ T5654] hsr_slave_1: entered promiscuous mode [ 84.608498][ T5654] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 84.620785][ T5654] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 84.628610][ T5654] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 84.639884][ T5654] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 84.647927][ T5654] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 84.659025][ T5654] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 84.666877][ T5654] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 84.678430][ T5654] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 84.708761][ T5654] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.716402][ T5654] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.724347][ T5654] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.731895][ T5654] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.784036][ T5654] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.804490][ T58] bridge0: port 1(bridge_slave_0) entered disabled state [ 84.813934][ T58] bridge0: port 2(bridge_slave_1) entered disabled state [ 84.831679][ T5654] 8021q: adding VLAN 0 to HW filter on device team0 [ 84.844859][ T519] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.852286][ T519] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.866396][ T79] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.873572][ T79] bridge0: port 2(bridge_slave_1) entered forwarding state [ 85.154771][ T5654] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 85.198499][ T5654] veth0_vlan: entered promiscuous mode [ 85.210385][ T5654] veth1_vlan: entered promiscuous mode [ 85.244602][ T5654] veth0_macvtap: entered promiscuous mode [ 85.254209][ T5654] veth1_macvtap: entered promiscuous mode [ 85.273388][ T5654] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 85.287887][ T5654] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 85.303085][ T519] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.313495][ T519] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.324141][ T519] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.334774][ T519] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 85.490249][ T79] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 85.573851][ T79] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 85.676103][ T79] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 85.771539][ T79] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 86.835963][ T10] cfg80211: failed to load regulatory.db [ 87.316370][ T3344] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 87.324743][ T3344] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 87.350286][ T58] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 87.359386][ T58] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 87.851968][ T79] bridge_slave_1: left allmulticast mode [ 87.865300][ T79] bridge_slave_1: left promiscuous mode [ 87.886744][ T79] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.900702][ T79] bridge_slave_0: left allmulticast mode [ 87.908697][ T79] bridge_slave_0: left promiscuous mode [ 87.915377][ T79] bridge0: port 1(bridge_slave_0) entered disabled state 2026/04/30 12:49:38 executed programs: 0 [ 88.103597][ T4938] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 88.114089][ T4938] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 88.122041][ T4938] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 88.130307][ T4938] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 88.139480][ T4938] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 88.153169][ T79] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 88.167922][ T79] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 88.178737][ T79] bond0 (unregistering): Released all slaves [ 88.321105][ T79] hsr_slave_0: left promiscuous mode [ 88.338092][ T79] hsr_slave_1: left promiscuous mode [ 88.355972][ T79] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 88.375542][ T79] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 88.393217][ T79] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 88.401729][ T79] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 88.424969][ T79] veth1_macvtap: left promiscuous mode [ 88.431510][ T79] veth0_macvtap: left promiscuous mode [ 88.437686][ T79] veth1_vlan: left promiscuous mode [ 88.443055][ T79] veth0_vlan: left promiscuous mode [ 88.712941][ T79] team0 (unregistering): Port device team_slave_1 removed [ 88.734406][ T79] team0 (unregistering): Port device team_slave_0 removed [ 88.823217][ T5283] 8021q: adding VLAN 0 to HW filter on device eth1 [ 89.417167][ T5283] 8021q: adding VLAN 0 to HW filter on device eth2 [ 89.784159][ T5744] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.792012][ T5744] bridge0: port 1(bridge_slave_0) entered disabled state [ 89.799424][ T5744] bridge_slave_0: entered allmulticast mode [ 89.807280][ T5744] bridge_slave_0: entered promiscuous mode [ 89.819396][ T5744] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.827997][ T5744] bridge0: port 2(bridge_slave_1) entered disabled state [ 89.835690][ T5744] bridge_slave_1: entered allmulticast mode [ 89.848008][ T5744] bridge_slave_1: entered promiscuous mode [ 89.940194][ T5744] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 90.048674][ T5744] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 90.099125][ T5744] team0: Port device team_slave_0 added [ 90.108074][ T5744] team0: Port device team_slave_1 added [ 90.186048][ T50] Bluetooth: hci0: command tx timeout [ 90.213279][ T5744] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 90.220519][ T5744] 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. [ 90.247468][ T5744] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 90.265774][ T5744] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 90.276621][ T5744] 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. [ 90.303922][ T5744] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 90.469408][ T5744] hsr_slave_0: entered promiscuous mode [ 90.481812][ T5744] hsr_slave_1: entered promiscuous mode [ 90.681880][ T5283] 8021q: adding VLAN 0 to HW filter on device eth3 [ 91.138311][ T5744] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 91.152779][ T5744] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 91.162541][ T5744] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 91.182054][ T5744] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 91.193977][ T5744] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 91.208510][ T5744] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 91.218476][ T5744] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 91.231736][ T5744] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 91.336798][ T5744] 8021q: adding VLAN 0 to HW filter on device bond0 [ 91.369870][ T5744] 8021q: adding VLAN 0 to HW filter on device team0 [ 91.386212][ T519] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.393493][ T519] bridge0: port 1(bridge_slave_0) entered forwarding state [ 91.411832][ T519] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.419160][ T519] bridge0: port 2(bridge_slave_1) entered forwarding state [ 91.908716][ T5744] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 91.978101][ T5744] veth0_vlan: entered promiscuous mode [ 91.994318][ T5744] veth1_vlan: entered promiscuous mode [ 92.035783][ T5744] veth0_macvtap: entered promiscuous mode [ 92.047946][ T5744] veth1_macvtap: entered promiscuous mode [ 92.079050][ T5744] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 92.097856][ T5744] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 92.121401][ T58] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.141194][ T58] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.162525][ T58] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.198589][ T519] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.251556][ T519] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 92.260991][ T50] Bluetooth: hci0: command tx timeout [ 92.267206][ T519] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 92.301651][ T13] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 92.309879][ T13] 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-build2958903999=/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 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/cceLaIYh.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