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 '10.128.0.254' (ED25519) to the list of known hosts. [ 101.517635][ T9] cfg80211: failed to load regulatory.db 2026/02/07 07:36:50 parsed 1 programs [ 107.526393][ T5830] cgroup: Unknown subsys name 'net' [ 107.640955][ T5830] cgroup: Unknown subsys name 'cpuset' [ 107.650367][ T5830] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 109.263909][ T5830] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 111.753392][ T52] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 111.776518][ T52] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 111.796993][ T52] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 111.848715][ T52] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 111.876234][ T52] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 112.323275][ T5849] 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. [ 114.055447][ T5867] chnl_net:caif_netlink_parms(): no params data found [ 114.951151][ T5867] bridge0: port 1(bridge_slave_0) entered blocking state [ 114.960017][ T5867] bridge0: port 1(bridge_slave_0) entered disabled state [ 114.973885][ T5867] bridge_slave_0: entered allmulticast mode [ 114.982791][ T5867] bridge_slave_0: entered promiscuous mode [ 115.016276][ T5867] bridge0: port 2(bridge_slave_1) entered blocking state [ 115.050061][ T5867] bridge0: port 2(bridge_slave_1) entered disabled state [ 115.058027][ T5867] bridge_slave_1: entered allmulticast mode [ 115.068657][ T5867] bridge_slave_1: entered promiscuous mode [ 115.131023][ T5867] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 115.149495][ T5867] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 115.273248][ T5867] team0: Port device team_slave_0 added [ 115.295657][ T5867] team0: Port device team_slave_1 added [ 115.307042][ T37] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 115.315082][ T37] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 115.431324][ T5867] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 115.444444][ T5867] 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. [ 115.471591][ T5867] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 115.516296][ T5867] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 115.534239][ T5867] 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. [ 115.581107][ T5867] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 115.667735][ T1137] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 115.675706][ T1137] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 115.800880][ T5867] hsr_slave_0: entered promiscuous mode [ 115.818023][ T5867] hsr_slave_1: entered promiscuous mode [ 116.175551][ T5867] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 116.189512][ T5867] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 116.199923][ T5867] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 116.210878][ T5867] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 116.297297][ T5867] 8021q: adding VLAN 0 to HW filter on device bond0 [ 116.320121][ T5867] 8021q: adding VLAN 0 to HW filter on device team0 [ 116.333832][ T3475] bridge0: port 1(bridge_slave_0) entered blocking state [ 116.341059][ T3475] bridge0: port 1(bridge_slave_0) entered forwarding state [ 116.357807][ T1137] bridge0: port 2(bridge_slave_1) entered blocking state [ 116.364921][ T1137] bridge0: port 2(bridge_slave_1) entered forwarding state [ 116.602639][ T5867] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 116.875443][ T5867] veth0_vlan: entered promiscuous mode [ 116.890566][ T5867] veth1_vlan: entered promiscuous mode [ 116.923222][ T5867] veth0_macvtap: entered promiscuous mode [ 116.933047][ T5867] veth1_macvtap: entered promiscuous mode [ 116.955402][ T5867] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 116.971680][ T5867] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 116.990721][ T3475] netdevsim netdevsim5 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 117.000357][ T3475] netdevsim netdevsim5 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 117.011816][ T3475] netdevsim netdevsim5 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 117.027600][ T3475] netdevsim netdevsim5 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/02/07 07:37:05 executed programs: 0 [ 117.218958][ T52] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 117.227425][ T52] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 117.235282][ T52] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 117.256084][ T52] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 117.276733][ T52] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 117.592602][ T5942] chnl_net:caif_netlink_parms(): no params data found [ 117.698470][ T5942] bridge0: port 1(bridge_slave_0) entered blocking state [ 117.705967][ T5942] bridge0: port 1(bridge_slave_0) entered disabled state [ 117.713161][ T5942] bridge_slave_0: entered allmulticast mode [ 117.720979][ T5942] bridge_slave_0: entered promiscuous mode [ 117.732089][ T5942] bridge0: port 2(bridge_slave_1) entered blocking state [ 117.739761][ T5942] bridge0: port 2(bridge_slave_1) entered disabled state [ 117.747952][ T5942] bridge_slave_1: entered allmulticast mode [ 117.755450][ T5942] bridge_slave_1: entered promiscuous mode [ 117.794562][ T5942] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 117.809376][ T5942] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 117.850581][ T5942] team0: Port device team_slave_0 added [ 117.858995][ T5942] team0: Port device team_slave_1 added [ 117.892843][ T5942] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 117.900744][ T5942] 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. [ 117.927047][ T5942] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 117.940478][ T5942] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 117.947530][ T5942] 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. [ 117.974528][ T5942] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 118.038391][ T5942] hsr_slave_0: entered promiscuous mode [ 118.045143][ T5942] hsr_slave_1: entered promiscuous mode [ 118.052081][ T5942] debugfs: 'hsr0' already exists in 'hsr' [ 118.058512][ T5942] Cannot create hsr debugfs directory [ 118.259980][ T5942] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 118.271689][ T5942] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 118.283674][ T5942] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 118.296181][ T5942] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 118.385327][ T5942] 8021q: adding VLAN 0 to HW filter on device bond0 [ 118.413273][ T5942] 8021q: adding VLAN 0 to HW filter on device team0 [ 118.428407][ T37] bridge0: port 1(bridge_slave_0) entered blocking state [ 118.435573][ T37] bridge0: port 1(bridge_slave_0) entered forwarding state [ 118.456611][ T1137] bridge0: port 2(bridge_slave_1) entered blocking state [ 118.464014][ T1137] bridge0: port 2(bridge_slave_1) entered forwarding state [ 118.710188][ T5942] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 118.764149][ T5942] veth0_vlan: entered promiscuous mode [ 118.780751][ T5942] veth1_vlan: entered promiscuous mode [ 118.816616][ T5942] veth0_macvtap: entered promiscuous mode [ 118.829882][ T5942] veth1_macvtap: entered promiscuous mode [ 118.852062][ T5942] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 118.868538][ T5942] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 118.884769][ T1137] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 118.897408][ T1137] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 118.914420][ T1137] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 118.923710][ T1137] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 118.994450][ T37] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 119.004359][ T37] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 119.040889][ T50] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 119.049281][ T50] 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) [ 119.419523][ T50] netdevsim netdevsim5 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 119.852627][ T50] netdevsim netdevsim5 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 119.950748][ T50] netdevsim netdevsim5 netdevsim1 (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-build2518403036=/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='go1.24.4' 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/cckIiyvR.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