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 '10.128.1.133' (ED25519) to the list of known hosts. 2026/07/24 11:52:06 parsed 1 programs [ 84.912138][ T5636] cgroup: Unknown subsys name 'net' [ 85.007508][ T5636] cgroup: Unknown subsys name 'cpuset' [ 85.016886][ T5636] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 86.551140][ T5636] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 89.354585][ T5648] 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. [ 89.619274][ T35] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.627661][ T35] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.657619][ T35] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.668514][ T35] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 91.181972][ T5675] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.190109][ T5675] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.198072][ T5675] bridge_slave_0: entered allmulticast mode [ 91.206091][ T5675] bridge_slave_0: entered promiscuous mode [ 91.215656][ T5675] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.223777][ T5675] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.230974][ T5675] bridge_slave_1: entered allmulticast mode [ 91.238314][ T5675] bridge_slave_1: entered promiscuous mode [ 91.265955][ T5675] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 91.277507][ T5675] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 91.306629][ T5675] team0: Port device team_slave_0 added [ 91.315933][ T5675] team0: Port device team_slave_1 added [ 91.340942][ T5675] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 91.348427][ T5675] 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. [ 91.374614][ T5675] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 91.387574][ T5675] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 91.395316][ T5675] 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. [ 91.421817][ T5675] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 91.461038][ T5675] hsr_slave_0: entered promiscuous mode [ 91.467945][ T5675] hsr_slave_1: entered promiscuous mode [ 91.599791][ T5675] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 91.613286][ T5675] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 91.622815][ T5675] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 91.632719][ T5675] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 91.640692][ T5675] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 91.650276][ T5675] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 91.658580][ T5675] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 91.667558][ T5675] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 91.750790][ T5675] 8021q: adding VLAN 0 to HW filter on device bond0 [ 91.771470][ T5675] 8021q: adding VLAN 0 to HW filter on device team0 [ 91.785552][ T43] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.794075][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state [ 91.815148][ T13] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.822288][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state [ 92.107842][ T5675] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 92.156634][ T5675] veth0_vlan: entered promiscuous mode [ 92.171227][ T5675] veth1_vlan: entered promiscuous mode [ 92.201973][ T5675] veth0_macvtap: entered promiscuous mode [ 92.212807][ T5675] veth1_macvtap: entered promiscuous mode [ 92.232731][ T5675] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 92.249501][ T5675] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 92.270580][ T43] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.280374][ T43] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.290962][ T43] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.309130][ T43] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 92.449800][ T5713] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 92.452861][ T35] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 92.460166][ T5713] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 92.476100][ T5713] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 92.493630][ T5713] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 92.503044][ T5713] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 92.513675][ T808] cfg80211: failed to load regulatory.db [ 92.546674][ T35] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 92.622010][ T35] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 92.743235][ T35] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 2026/07/24 11:52:19 executed programs: 0 [ 94.460882][ T5713] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 94.469031][ T5713] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 94.476880][ T5713] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 94.487374][ T5713] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 94.496689][ T5713] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 94.882834][ T5760] bridge0: port 1(bridge_slave_0) entered blocking state [ 94.890498][ T5760] bridge0: port 1(bridge_slave_0) entered disabled state [ 94.898222][ T5760] bridge_slave_0: entered allmulticast mode [ 94.905883][ T5760] bridge_slave_0: entered promiscuous mode [ 94.913903][ T5760] bridge0: port 2(bridge_slave_1) entered blocking state [ 94.921052][ T5760] bridge0: port 2(bridge_slave_1) entered disabled state [ 94.928535][ T5760] bridge_slave_1: entered allmulticast mode [ 94.935568][ T5760] bridge_slave_1: entered promiscuous mode [ 94.963054][ T5760] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 94.975499][ T5760] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 95.008679][ T5760] team0: Port device team_slave_0 added [ 95.016230][ T5760] team0: Port device team_slave_1 added [ 95.041972][ T5760] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 95.049386][ T5760] 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. [ 95.076327][ T5760] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 95.089056][ T5760] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 95.096192][ T5760] 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. [ 95.122597][ T5760] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 95.164654][ T5760] hsr_slave_0: entered promiscuous mode [ 95.171026][ T5760] hsr_slave_1: entered promiscuous mode [ 95.177621][ T5760] debugfs: 'hsr0' already exists in 'hsr' [ 95.183729][ T5760] Cannot create hsr debugfs directory [ 95.372926][ T35] bridge_slave_1: left allmulticast mode [ 95.380564][ T35] bridge_slave_1: left promiscuous mode [ 95.388346][ T35] bridge0: port 2(bridge_slave_1) entered disabled state [ 95.403430][ T35] bridge_slave_0: left allmulticast mode [ 95.409653][ T35] bridge_slave_0: left promiscuous mode [ 95.420538][ T35] bridge0: port 1(bridge_slave_0) entered disabled state [ 95.619545][ T35] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 95.636526][ T35] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 95.647408][ T35] bond0 (unregistering): Released all slaves [ 95.772795][ T35] hsr_slave_0: left promiscuous mode [ 95.779757][ T35] hsr_slave_1: left promiscuous mode [ 95.786188][ T35] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 95.793886][ T35] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 95.806383][ T35] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 95.814028][ T35] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 95.832799][ T35] veth1_macvtap: left promiscuous mode [ 95.839690][ T35] veth0_macvtap: left promiscuous mode [ 95.846329][ T35] veth1_vlan: left promiscuous mode [ 95.851773][ T35] veth0_vlan: left promiscuous mode [ 96.021580][ T35] team0 (unregistering): Port device team_slave_1 removed [ 96.046896][ T35] team0 (unregistering): Port device team_slave_0 removed [ 96.138777][ T5287] 8021q: adding VLAN 0 to HW filter on device eth1 [ 96.504855][ T5760] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 96.534576][ T5760] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 96.544605][ T5760] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 96.557669][ T5760] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 96.566740][ T5760] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 96.574458][ T4942] Bluetooth: hci0: command tx timeout [ 96.585754][ T5760] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 96.595494][ T5760] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 96.620915][ T5760] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 97.171562][ T5760] 8021q: adding VLAN 0 to HW filter on device bond0 [ 97.309493][ T5760] 8021q: adding VLAN 0 to HW filter on device team0 [ 97.335884][ T13] bridge0: port 1(bridge_slave_0) entered blocking state [ 97.343101][ T13] bridge0: port 1(bridge_slave_0) entered forwarding state [ 97.418560][ T13] bridge0: port 2(bridge_slave_1) entered blocking state [ 97.425917][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state [ 98.010677][ T5760] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 98.075633][ T5760] veth0_vlan: entered promiscuous mode [ 98.092040][ T5760] veth1_vlan: entered promiscuous mode [ 98.134090][ T5760] veth0_macvtap: entered promiscuous mode [ 98.146274][ T5760] veth1_macvtap: entered promiscuous mode [ 98.183638][ T5760] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 98.202964][ T5760] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 98.221817][ T43] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.239942][ T1110] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.261909][ T1110] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.279342][ T1110] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.359766][ T1110] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 98.378340][ T1110] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 98.428634][ T1110] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 98.436633][ T1110] 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-build843387720=/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 ef766cd741 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=ef766cd7419cd6574f2bc8df4b866b93bc12bcb1 -X github.com/google/syzkaller/prog.gitRevisionDate=20251117-092759" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=ef766cd7419cd6574f2bc8df4b866b93bc12bcb1 -X github.com/google/syzkaller/prog.gitRevisionDate=20251117-092759" ./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=ef766cd7419cd6574f2bc8df4b866b93bc12bcb1 -X github.com/google/syzkaller/prog.gitRevisionDate=20251117-092759" -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=\"ef766cd7419cd6574f2bc8df4b866b93bc12bcb1\" /usr/bin/ld: /tmp/cc8CaRB6.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