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 '10.128.0.134' (ED25519) to the list of known hosts. 2026/01/30 09:49:36 parsed 1 programs [ 79.677632][ T5824] cgroup: Unknown subsys name 'net' [ 79.799978][ T5824] cgroup: Unknown subsys name 'cpuset' [ 79.808682][ T5824] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 81.198952][ T5824] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 84.312184][ T5844] 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. [ 84.387159][ T1148] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.395191][ T1148] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.474758][ T12] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.528067][ T12] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.838730][ T51] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 84.848486][ T51] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 84.857599][ T51] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 84.865935][ T51] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 84.882651][ T51] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 86.651023][ T5885] chnl_net:caif_netlink_parms(): no params data found [ 87.040065][ T5885] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.057702][ T5885] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.065059][ T5885] bridge_slave_0: entered allmulticast mode [ 87.087326][ T5885] bridge_slave_0: entered promiscuous mode [ 87.108684][ T5885] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.119247][ T5885] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.131606][ T5885] bridge_slave_1: entered allmulticast mode [ 87.144804][ T5885] bridge_slave_1: entered promiscuous mode [ 87.262118][ T5885] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 87.275187][ T5885] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 87.318740][ T5885] team0: Port device team_slave_0 added [ 87.329671][ T5885] team0: Port device team_slave_1 added [ 87.368709][ T5885] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 87.376041][ T5885] 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. [ 87.403213][ T5885] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 87.416793][ T5885] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 87.423842][ T5885] 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. [ 87.450283][ T5885] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 87.495960][ T5885] hsr_slave_0: entered promiscuous mode [ 87.504077][ T5885] hsr_slave_1: entered promiscuous mode [ 87.659351][ T5885] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 87.673346][ T5885] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 87.684170][ T5885] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 87.695323][ T5885] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 87.773840][ T5885] 8021q: adding VLAN 0 to HW filter on device bond0 [ 87.807505][ T5885] 8021q: adding VLAN 0 to HW filter on device team0 [ 87.826030][ T49] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.833550][ T49] bridge0: port 1(bridge_slave_0) entered forwarding state [ 87.852999][ T36] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.860363][ T36] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.025162][ T5885] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 88.072605][ T5885] veth0_vlan: entered promiscuous mode [ 88.087267][ T5885] veth1_vlan: entered promiscuous mode [ 88.118017][ T5885] veth0_macvtap: entered promiscuous mode [ 88.128125][ T5885] veth1_macvtap: entered promiscuous mode [ 88.151370][ T5885] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 88.169040][ T5885] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 88.189392][ T1148] netdevsim netdevsim2 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.199299][ T1148] netdevsim netdevsim2 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.210256][ T1148] netdevsim netdevsim2 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 88.220309][ T1148] netdevsim netdevsim2 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/01/30 09:49:47 executed programs: 0 [ 88.370949][ T51] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 88.388222][ T51] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 88.397896][ T51] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 88.406001][ T51] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 88.422044][ T51] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 88.604694][ T5936] chnl_net:caif_netlink_parms(): no params data found [ 88.670416][ T5936] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.677795][ T5936] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.684941][ T5936] bridge_slave_0: entered allmulticast mode [ 88.692362][ T5936] bridge_slave_0: entered promiscuous mode [ 88.700986][ T5936] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.708586][ T5936] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.715947][ T5936] bridge_slave_1: entered allmulticast mode [ 88.723401][ T5936] bridge_slave_1: entered promiscuous mode [ 88.755118][ T5936] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 88.767615][ T5936] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 88.798958][ T5936] team0: Port device team_slave_0 added [ 88.806995][ T5936] team0: Port device team_slave_1 added [ 88.836177][ T5936] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 88.843880][ T5936] 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. [ 88.870669][ T5936] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 88.883414][ T5936] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 88.890989][ T5936] 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. [ 88.917284][ T5936] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 88.968029][ T5936] hsr_slave_0: entered promiscuous mode [ 88.974458][ T5936] hsr_slave_1: entered promiscuous mode [ 88.981999][ T5936] debugfs: 'hsr0' already exists in 'hsr' [ 88.988491][ T5936] Cannot create hsr debugfs directory [ 89.146354][ T5936] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 89.159249][ T5936] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 89.170149][ T5936] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 89.180485][ T5936] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 89.254308][ T5936] 8021q: adding VLAN 0 to HW filter on device bond0 [ 89.273491][ T5936] 8021q: adding VLAN 0 to HW filter on device team0 [ 89.285548][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 89.292809][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 89.311958][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 89.319313][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 89.499632][ T5936] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 89.538229][ T5936] veth0_vlan: entered promiscuous mode [ 89.550559][ T5936] veth1_vlan: entered promiscuous mode [ 89.580111][ T5936] veth0_macvtap: entered promiscuous mode [ 89.589994][ T5936] veth1_macvtap: entered promiscuous mode [ 89.609179][ T5936] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 89.623963][ T5936] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 89.643891][ T2969] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.654616][ T2969] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.668828][ T2969] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.678315][ T2969] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 89.741928][ T1148] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.751088][ T1148] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 89.784572][ T1148] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 89.793199][ T1148] 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) [ 90.537900][ T2969] netdevsim netdevsim2 netdevsim3 (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-build2085390947=/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='go1.24.4' 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/ccchNdSM.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