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 '[localhost]:59982' (ED25519) to the list of known hosts. 2026/09/22 05:05:05 parsed 1 programs syzkaller login: [ 90.745314][ T5285] cgroup: Unknown subsys name 'net' [ 90.807676][ T5285] cgroup: Unknown subsys name 'cpuset' [ 90.811721][ T5285] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 91.988234][ T937] cfg80211: failed to load regulatory.db [ 92.479075][ T5285] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 96.413074][ T5296] soft_limit_in_bytes is deprecated and will be removed. Writing any value to this file has no effect. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 97.700213][ T5323] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 97.702356][ T5323] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 97.709604][ T5323] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 97.710647][ T5323] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 97.711001][ T5323] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 100.341915][ T5350] bridge0: port 1(bridge_slave_0) entered blocking state [ 100.346108][ T5350] bridge0: port 1(bridge_slave_0) entered disabled state [ 100.346236][ T5350] bridge_slave_0: entered allmulticast mode [ 100.347989][ T5350] bridge_slave_0: entered promiscuous mode [ 100.365097][ T5350] bridge0: port 2(bridge_slave_1) entered blocking state [ 100.365275][ T5350] bridge0: port 2(bridge_slave_1) entered disabled state [ 100.365540][ T5350] bridge_slave_1: entered allmulticast mode [ 100.366927][ T5350] bridge_slave_1: entered promiscuous mode [ 100.408237][ T5350] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 100.410889][ T5350] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 100.443890][ T5350] team0: Port device team_slave_0 added [ 100.446269][ T5350] team0: Port device team_slave_1 added [ 100.469880][ T5350] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 100.469895][ T5350] 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. [ 100.469909][ T5350] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 100.492287][ T5350] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 100.492300][ T5350] 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. [ 100.492315][ T5350] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 100.550914][ T5350] hsr_slave_0: entered promiscuous mode [ 100.551903][ T5350] hsr_slave_1: entered promiscuous mode [ 100.740291][ T5350] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 100.753821][ T5350] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 100.756051][ T5350] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 100.759675][ T5350] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 100.760689][ T5350] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 100.780593][ T5350] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 100.781813][ T5350] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 100.801501][ T5350] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 100.838332][ T5350] bridge0: port 2(bridge_slave_1) entered blocking state [ 100.838424][ T5350] bridge0: port 2(bridge_slave_1) entered forwarding state [ 100.838959][ T5350] bridge0: port 1(bridge_slave_0) entered blocking state [ 100.839091][ T5350] bridge0: port 1(bridge_slave_0) entered forwarding state [ 100.924077][ T5350] 8021q: adding VLAN 0 to HW filter on device bond0 [ 100.941914][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 100.948646][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 100.966094][ T5350] 8021q: adding VLAN 0 to HW filter on device team0 [ 100.979049][ T1055] bridge0: port 1(bridge_slave_0) entered blocking state [ 100.979128][ T1055] bridge0: port 1(bridge_slave_0) entered forwarding state [ 100.996314][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 100.996383][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 101.410559][ T5350] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 101.459762][ T5350] veth0_vlan: entered promiscuous mode [ 101.472017][ T5350] veth1_vlan: entered promiscuous mode [ 101.509912][ T5350] veth0_macvtap: entered promiscuous mode [ 101.518707][ T5350] veth1_macvtap: entered promiscuous mode [ 101.538626][ T5350] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 101.551558][ T5350] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 101.605697][ T12] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 101.606006][ T12] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 101.606030][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 101.606050][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 101.817200][ T12] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 101.896386][ T12] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 101.954042][ T12] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 103.040781][ T12] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 103.159019][ T1055] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 103.159045][ T1055] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 103.214466][ T956] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 103.214485][ T956] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 2026/09/22 05:05:20 executed programs: 0 [ 103.801870][ T4640] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 103.810361][ T4640] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 103.812427][ T4640] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 103.821434][ T4640] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 103.827244][ T4640] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 104.387088][ T5412] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.387934][ T5412] bridge0: port 1(bridge_slave_0) entered disabled state [ 104.388051][ T5412] bridge_slave_0: entered allmulticast mode [ 104.390690][ T5412] bridge_slave_0: entered promiscuous mode [ 104.424220][ T5412] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.424289][ T5412] bridge0: port 2(bridge_slave_1) entered disabled state [ 104.424392][ T5412] bridge_slave_1: entered allmulticast mode [ 104.429987][ T5412] bridge_slave_1: entered promiscuous mode [ 104.515243][ T5412] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 104.522168][ T5412] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 104.586214][ T12] bridge_slave_1: left allmulticast mode [ 104.586254][ T12] bridge_slave_1: left promiscuous mode [ 104.587372][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 104.608266][ T12] bridge_slave_0: left allmulticast mode [ 104.608285][ T12] bridge_slave_0: left promiscuous mode [ 104.608412][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 104.949340][ T12] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 104.960298][ T12] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 104.961531][ T12] bond0 (unregistering): Released all slaves [ 104.995482][ T4986] 8021q: adding VLAN 0 to HW filter on device eth2 [ 105.070850][ T12] hsr_slave_0: left promiscuous mode [ 105.072273][ T12] hsr_slave_1: left promiscuous mode [ 105.079412][ T12] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 105.079442][ T12] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 105.081112][ T12] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 105.081124][ T12] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 105.105738][ T12] veth1_macvtap: left promiscuous mode [ 105.105822][ T12] veth0_macvtap: left promiscuous mode [ 105.105941][ T12] veth1_vlan: left promiscuous mode [ 105.105998][ T12] veth0_vlan: left promiscuous mode [ 105.336608][ T12] team0 (unregistering): Port device team_slave_1 removed [ 105.358060][ T12] team0 (unregistering): Port device team_slave_0 removed [ 105.481806][ T5412] team0: Port device team_slave_0 added [ 105.501685][ T5412] team0: Port device team_slave_1 added [ 105.566552][ T5412] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 105.566567][ T5412] 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. [ 105.566644][ T5412] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 105.597871][ T5412] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 105.597883][ T5412] 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. [ 105.597898][ T5412] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 105.770778][ T5412] hsr_slave_0: entered promiscuous mode [ 105.779514][ T5412] hsr_slave_1: entered promiscuous mode [ 105.905619][ T4640] Bluetooth: hci0: command tx timeout [ 106.238372][ T4986] 8021q: adding VLAN 0 to HW filter on device eth3 [ 107.215621][ T5412] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 107.236192][ T5412] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 107.238294][ T5412] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 107.250440][ T5412] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 107.251952][ T5412] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 107.273706][ T5412] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 107.275422][ T5412] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 107.289377][ T5412] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 107.476426][ T5412] 8021q: adding VLAN 0 to HW filter on device bond0 [ 107.512221][ T5412] 8021q: adding VLAN 0 to HW filter on device team0 [ 107.534980][ T1055] bridge0: port 1(bridge_slave_0) entered blocking state [ 107.535050][ T1055] bridge0: port 1(bridge_slave_0) entered forwarding state [ 107.551000][ T956] bridge0: port 2(bridge_slave_1) entered blocking state [ 107.551079][ T956] bridge0: port 2(bridge_slave_1) entered forwarding state [ 107.988175][ T4640] Bluetooth: hci0: command tx timeout [ 108.332087][ T5412] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 108.426340][ T5412] veth0_vlan: entered promiscuous mode [ 108.439552][ T5412] veth1_vlan: entered promiscuous mode [ 108.471076][ T5412] veth0_macvtap: entered promiscuous mode [ 108.477907][ T5412] veth1_macvtap: entered promiscuous mode [ 108.494148][ T5412] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 108.501410][ T5412] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 108.552830][ T53] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.613201][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.613542][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.613564][ T12] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.653595][ T12] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.653612][ T12] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 108.708031][ T53] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.708050][ T53] 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) [ 109.716970][ T956] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 110.475386][ T956] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 111.167543][ T956] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 111.201639][ T956] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 111.347569][ T956] bridge_slave_1: left allmulticast mode [ 111.347591][ T956] bridge_slave_1: left promiscuous mode [ 111.348602][ T956] bridge0: port 2(bridge_slave_1) entered disabled state [ 111.369058][ T956] bridge_slave_0: left allmulticast mode [ 111.369079][ T956] bridge_slave_0: left promiscuous mode [ 111.369208][ T956] bridge0: port 1(bridge_slave_0) entered disabled state [ 111.647268][ T956] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 111.651852][ T956] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 111.673863][ T956] bond0 (unregistering): Released all slaves [ 111.829894][ T4986] 8021q: adding VLAN 0 to HW filter on device eth2 [ 111.914904][ T956] hsr_slave_0: left promiscuous mode [ 111.916167][ T956] hsr_slave_1: left promiscuous mode [ 111.917608][ T956] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 111.917624][ T956] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 111.919085][ T956] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 111.919098][ T956] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 111.955213][ T956] veth1_macvtap: left promiscuous mode [ 111.955270][ T956] veth0_macvtap: left promiscuous mode [ 111.956043][ T956] veth1_vlan: left promiscuous mode [ 111.956190][ T956] veth0_vlan: left promiscuous mode [ 112.367910][ T956] team0 (unregistering): Port device team_slave_1 removed [ 112.382409][ T956] team0 (unregistering): Port device team_slave_0 removed [ 112.499560][ T4986] 8021q: adding VLAN 0 to HW filter on device eth3 [ 112.858848][ T4986] 8021q: adding VLAN 0 to HW filter on device eth4 [ 113.059213][ T4986] 8021q: adding VLAN 0 to HW filter on device eth5 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-build3151604160=/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 f7988ea4935 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=f7988ea4935e2627f33bc73cf235f2c1942dce76 -X github.com/google/syzkaller/prog.gitRevisionDate=20251114-115537" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=f7988ea4935e2627f33bc73cf235f2c1942dce76 -X github.com/google/syzkaller/prog.gitRevisionDate=20251114-115537" ./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=f7988ea4935e2627f33bc73cf235f2c1942dce76 -X github.com/google/syzkaller/prog.gitRevisionDate=20251114-115537" -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=\"f7988ea4935e2627f33bc73cf235f2c1942dce76\" /usr/bin/ld: /tmp/cccdNG4f.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