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 '10.128.1.115' (ED25519) to the list of known hosts. 2026/04/12 16:12:16 parsed 1 programs [ 73.772925][ T5839] cgroup: Unknown subsys name 'net' [ 73.859862][ T5839] cgroup: Unknown subsys name 'cpuset' [ 73.868906][ T5839] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 75.223867][ T5839] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 78.313537][ T5854] 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. [ 78.985853][ T5885] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 78.996953][ T5885] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 79.006664][ T5885] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 79.016456][ T5885] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 79.029267][ T5885] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 79.572454][ T5870] chnl_net:caif_netlink_parms(): no params data found [ 79.925718][ T5870] bridge0: port 1(bridge_slave_0) entered blocking state [ 79.934061][ T5870] bridge0: port 1(bridge_slave_0) entered disabled state [ 79.942401][ T5870] bridge_slave_0: entered allmulticast mode [ 79.949553][ T5870] bridge_slave_0: entered promiscuous mode [ 79.963436][ T5870] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.973697][ T5870] bridge0: port 2(bridge_slave_1) entered disabled state [ 79.981095][ T5870] bridge_slave_1: entered allmulticast mode [ 79.988663][ T5870] bridge_slave_1: entered promiscuous mode [ 80.109567][ T5870] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.126530][ T5870] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.479067][ T5870] team0: Port device team_slave_0 added [ 80.516204][ T5870] team0: Port device team_slave_1 added [ 80.622018][ T5870] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 80.629237][ T5870] 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. [ 80.655646][ T5870] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 80.692373][ T5870] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 80.699409][ T5870] 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. [ 80.725508][ T5870] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 80.972404][ T5870] hsr_slave_0: entered promiscuous mode [ 80.980293][ T5870] hsr_slave_1: entered promiscuous mode [ 81.161651][ T1124] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.187408][ T1124] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.314918][ T3585] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.333801][ T3585] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.657705][ T29] cfg80211: failed to load regulatory.db [ 81.815796][ T5870] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.859576][ T5870] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 81.873749][ T5870] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.890558][ T5870] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 81.909454][ T5870] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.930061][ T5870] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 81.937982][ T5870] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.959927][ T5870] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 82.221867][ T5870] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.244977][ T5870] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.258821][ T36] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.266436][ T36] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.289177][ T36] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.296281][ T36] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.442518][ T5870] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.480840][ T5870] veth0_vlan: entered promiscuous mode [ 82.491584][ T5870] veth1_vlan: entered promiscuous mode [ 82.519754][ T5870] veth0_macvtap: entered promiscuous mode [ 82.530355][ T5870] veth1_macvtap: entered promiscuous mode [ 82.545148][ T5870] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.559814][ T5870] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.576045][ T36] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.586189][ T36] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.600369][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.609394][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/04/12 16:12:27 executed programs: 0 [ 82.747471][ T5158] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 82.749159][ T3585] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.765074][ T5158] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 82.765727][ T5158] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 82.781433][ T5158] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 82.790217][ T5158] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 82.913277][ T3585] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 82.983748][ T3585] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.001931][ T5952] chnl_net:caif_netlink_parms(): no params data found [ 83.057984][ T3585] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 83.101826][ T5952] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.109558][ T5952] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.117857][ T5952] bridge_slave_0: entered allmulticast mode [ 83.124800][ T5952] bridge_slave_0: entered promiscuous mode [ 83.134638][ T5952] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.141925][ T5952] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.149478][ T5952] bridge_slave_1: entered allmulticast mode [ 83.156388][ T5952] bridge_slave_1: entered promiscuous mode [ 83.185771][ T5952] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.199511][ T5952] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 83.228819][ T5952] team0: Port device team_slave_0 added [ 83.236176][ T5952] team0: Port device team_slave_1 added [ 83.261637][ T5952] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 83.268649][ T5952] 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. [ 83.295593][ T5952] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 83.308892][ T5952] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 83.315840][ T5952] 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. [ 83.341873][ T5952] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 83.388960][ T5952] hsr_slave_0: entered promiscuous mode [ 83.395293][ T5952] hsr_slave_1: entered promiscuous mode [ 83.402183][ T5952] debugfs: 'hsr0' already exists in 'hsr' [ 83.408750][ T5952] Cannot create hsr debugfs directory [ 84.827951][ T5885] Bluetooth: hci0: command tx timeout [ 85.354914][ T3585] bridge_slave_1: left allmulticast mode [ 85.361362][ T3585] bridge_slave_1: left promiscuous mode [ 85.368082][ T3585] bridge0: port 2(bridge_slave_1) entered disabled state [ 85.380496][ T3585] bridge_slave_0: left allmulticast mode [ 85.386904][ T3585] bridge_slave_0: left promiscuous mode [ 85.392608][ T3585] bridge0: port 1(bridge_slave_0) entered disabled state [ 85.534210][ T3585] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 85.546326][ T3585] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 85.556476][ T3585] bond0 (unregistering): Released all slaves [ 85.636505][ T3585] hsr_slave_0: left promiscuous mode [ 85.642890][ T3585] hsr_slave_1: left promiscuous mode [ 85.649746][ T3585] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 85.657909][ T3585] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 85.666498][ T3585] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 85.674347][ T3585] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 85.693820][ T3585] veth1_macvtap: left promiscuous mode [ 85.700238][ T3585] veth0_macvtap: left promiscuous mode [ 85.705907][ T3585] veth1_vlan: left promiscuous mode [ 85.711967][ T3585] veth0_vlan: left promiscuous mode [ 86.008252][ T3585] team0 (unregistering): Port device team_slave_1 removed [ 86.026541][ T3585] team0 (unregistering): Port device team_slave_0 removed [ 86.153230][ T5504] 8021q: adding VLAN 0 to HW filter on device eth1 [ 86.570683][ T5952] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 86.582718][ T5952] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 86.599005][ T5952] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 86.608242][ T5952] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 86.616282][ T5952] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 86.626247][ T5952] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 86.636052][ T5952] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 86.647215][ T5952] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 86.745170][ T5952] 8021q: adding VLAN 0 to HW filter on device bond0 [ 86.774368][ T5952] 8021q: adding VLAN 0 to HW filter on device team0 [ 86.788423][ T48] bridge0: port 1(bridge_slave_0) entered blocking state [ 86.795729][ T48] bridge0: port 1(bridge_slave_0) entered forwarding state [ 86.824818][ T48] bridge0: port 2(bridge_slave_1) entered blocking state [ 86.832049][ T48] bridge0: port 2(bridge_slave_1) entered forwarding state [ 86.912126][ T5885] Bluetooth: hci0: command tx timeout [ 87.080079][ T5952] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 87.135162][ T5952] veth0_vlan: entered promiscuous mode [ 87.155488][ T5952] veth1_vlan: entered promiscuous mode [ 87.193680][ T5952] veth0_macvtap: entered promiscuous mode [ 87.205392][ T5952] veth1_macvtap: entered promiscuous mode [ 87.230316][ T5952] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 87.251605][ T5952] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 87.269414][ T48] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 87.292883][ T48] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 87.304402][ T48] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 87.326230][ T48] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 87.401372][ T3585] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 87.418484][ T3585] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 87.464525][ T12] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 87.481600][ T12] 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-build1507238108=/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 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/ccC6viO4.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