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 '10.128.0.4' (ED25519) to the list of known hosts. [ 92.216813][ T185] cfg80211: failed to load regulatory.db 2026/07/28 16:49:18 parsed 1 programs [ 98.212433][ T5626] cgroup: Unknown subsys name 'net' [ 98.308562][ T5626] cgroup: Unknown subsys name 'cpuset' [ 98.318506][ T5626] cgroup: Unknown subsys name 'rlimit' [ 98.324876][ T5626] cgroup: Unknown subsys name 'memory' Setting up swapspace version 1, size = 127995904 bytes [ 100.127712][ T5626] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 103.526156][ T5645] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 103.536737][ T5645] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 103.546518][ T5645] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 103.556213][ T5645] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 103.568741][ T5645] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 105.846634][ T5676] bridge0: port 1(bridge_slave_0) entered blocking state [ 105.855283][ T5676] bridge0: port 1(bridge_slave_0) entered disabled state [ 105.863583][ T5676] bridge_slave_0: entered allmulticast mode [ 105.871106][ T5676] bridge_slave_0: entered promiscuous mode [ 105.882729][ T5676] bridge0: port 2(bridge_slave_1) entered blocking state [ 105.890263][ T5676] bridge0: port 2(bridge_slave_1) entered disabled state [ 105.897956][ T5676] bridge_slave_1: entered allmulticast mode [ 105.905833][ T5676] bridge_slave_1: entered promiscuous mode [ 105.946130][ T5676] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 105.959233][ T5676] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 105.998506][ T5676] team0: Port device team_slave_0 added [ 106.007045][ T5676] team0: Port device team_slave_1 added [ 106.039609][ T5676] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 106.047136][ T5676] 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. [ 106.073750][ T5676] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 106.087561][ T5676] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 106.095224][ T5676] 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. [ 106.121708][ T5676] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 106.177581][ T5676] hsr_slave_0: entered promiscuous mode [ 106.185850][ T5676] hsr_slave_1: entered promiscuous mode [ 106.375226][ T5676] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 106.392173][ T5676] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 106.401931][ T5676] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 106.414291][ T5676] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 106.422615][ T5676] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 106.434067][ T5676] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 106.442732][ T5676] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 106.455442][ T5676] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 106.557974][ T5676] 8021q: adding VLAN 0 to HW filter on device bond0 [ 106.589675][ T5676] 8021q: adding VLAN 0 to HW filter on device team0 [ 106.608888][ T1149] bridge0: port 1(bridge_slave_0) entered blocking state [ 106.617069][ T1149] bridge0: port 1(bridge_slave_0) entered forwarding state [ 106.637475][ T1149] bridge0: port 2(bridge_slave_1) entered blocking state [ 106.644683][ T1149] bridge0: port 2(bridge_slave_1) entered forwarding state [ 107.040053][ T5676] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 107.098242][ T5676] veth0_vlan: entered promiscuous mode [ 107.114031][ T5676] veth1_vlan: entered promiscuous mode [ 107.149410][ T5676] veth0_macvtap: entered promiscuous mode [ 107.160542][ T5676] veth1_macvtap: entered promiscuous mode [ 107.188638][ T5676] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 107.207104][ T5676] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 107.225841][ T870] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 107.237121][ T870] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 107.250946][ T870] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 107.260326][ T870] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 107.402605][ T13] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 107.482273][ T13] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 107.545618][ T13] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 107.666487][ T13] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 108.248473][ T29] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.257225][ T29] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 108.300046][ T870] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.309382][ T870] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 2026/07/28 16:49:33 executed programs: 0 [ 109.264655][ T50] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 109.274083][ T50] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 109.283461][ T50] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 109.295378][ T50] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 109.304820][ T50] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 109.911491][ T5746] bridge0: port 1(bridge_slave_0) entered blocking state [ 109.919678][ T5746] bridge0: port 1(bridge_slave_0) entered disabled state [ 109.929859][ T5746] bridge_slave_0: entered allmulticast mode [ 109.938957][ T5746] bridge_slave_0: entered promiscuous mode [ 109.985685][ T5746] bridge0: port 2(bridge_slave_1) entered blocking state [ 109.996818][ T5746] bridge0: port 2(bridge_slave_1) entered disabled state [ 110.005174][ T5746] bridge_slave_1: entered allmulticast mode [ 110.014980][ T5746] bridge_slave_1: entered promiscuous mode [ 110.081171][ T5746] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 110.122544][ T5746] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 110.154998][ T13] bridge_slave_1: left allmulticast mode [ 110.161701][ T13] bridge_slave_1: left promiscuous mode [ 110.173030][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 110.193696][ T13] bridge_slave_0: left allmulticast mode [ 110.199861][ T13] bridge_slave_0: left promiscuous mode [ 110.208120][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 110.366581][ T13] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 110.379043][ T13] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 110.391953][ T13] bond0 (unregistering): Released all slaves [ 110.448435][ T5746] team0: Port device team_slave_0 added [ 110.464646][ T5746] team0: Port device team_slave_1 added [ 110.515730][ T13] hsr_slave_0: left promiscuous mode [ 110.524031][ T13] hsr_slave_1: left promiscuous mode [ 110.530227][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 110.538676][ T13] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 110.547835][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 110.555441][ T13] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 110.570844][ T13] veth1_macvtap: left promiscuous mode [ 110.577299][ T13] veth0_macvtap: left promiscuous mode [ 110.582934][ T13] veth1_vlan: left promiscuous mode [ 110.588682][ T13] veth0_vlan: left promiscuous mode [ 110.792352][ T13] team0 (unregistering): Port device team_slave_1 removed [ 110.809301][ T13] team0 (unregistering): Port device team_slave_0 removed [ 110.926410][ T5746] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 110.935075][ T5746] 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. [ 110.963044][ T5746] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 110.988866][ T5746] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 110.996096][ T5746] 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. [ 111.041463][ T5746] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 111.156590][ T5746] hsr_slave_0: entered promiscuous mode [ 111.175564][ T5746] hsr_slave_1: entered promiscuous mode [ 111.334880][ T50] Bluetooth: hci0: command tx timeout [ 111.826352][ T5273] 8021q: adding VLAN 0 to HW filter on device eth1 [ 112.413014][ T5746] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 112.449939][ T5746] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 112.472621][ T5746] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 112.496613][ T5746] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 112.514921][ T5746] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 112.531928][ T5746] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 112.540556][ T5746] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 112.554309][ T5746] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 112.682424][ T5746] 8021q: adding VLAN 0 to HW filter on device bond0 [ 112.710842][ T5746] 8021q: adding VLAN 0 to HW filter on device team0 [ 112.728065][ T13] bridge0: port 1(bridge_slave_0) entered blocking state [ 112.735438][ T13] bridge0: port 1(bridge_slave_0) entered forwarding state [ 112.768721][ T13] bridge0: port 2(bridge_slave_1) entered blocking state [ 112.776264][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state [ 112.840893][ T5746] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 113.352027][ T5746] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 113.416056][ T50] Bluetooth: hci0: command tx timeout [ 113.428116][ T5746] veth0_vlan: entered promiscuous mode [ 113.445426][ T5746] veth1_vlan: entered promiscuous mode [ 113.489031][ T5746] veth0_macvtap: entered promiscuous mode [ 113.501455][ T5746] veth1_macvtap: entered promiscuous mode [ 113.529673][ T5746] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 113.548429][ T5746] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 113.579342][ T13] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 113.600518][ T13] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 113.613665][ T13] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 113.624030][ T13] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 113.712173][ T870] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 113.735318][ T870] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 113.787511][ T1343] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 113.797171][ T1343] 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-build3720359973=/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/cc8Vx4pQ.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