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]:6758' (ED25519) to the list of known hosts. 2026/01/13 09:47:15 parsed 1 programs syzkaller login: [ 88.636134][ T5322] cgroup: Unknown subsys name 'net' [ 88.702610][ T5322] cgroup: Unknown subsys name 'cpuset' [ 88.709889][ T5322] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 90.433976][ T5322] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 91.838710][ T10] cfg80211: failed to load regulatory.db [ 95.756658][ T5344] 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. [ 96.241052][ T5364] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 96.245152][ T5364] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 96.248925][ T5364] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 96.252570][ T5364] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 96.255828][ T5364] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 97.754415][ T1807] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 97.758021][ T1807] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 98.817116][ T25] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 98.823028][ T25] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 99.402927][ T5362] syz-executor (5362) used greatest stack depth: 18584 bytes left [ 101.293045][ T5386] chnl_net:caif_netlink_parms(): no params data found [ 101.608338][ T5386] bridge0: port 1(bridge_slave_0) entered blocking state [ 101.639052][ T5386] bridge0: port 1(bridge_slave_0) entered disabled state [ 101.648863][ T5386] bridge_slave_0: entered allmulticast mode [ 101.656994][ T5386] bridge_slave_0: entered promiscuous mode [ 101.700062][ T5386] bridge0: port 2(bridge_slave_1) entered blocking state [ 101.703307][ T5386] bridge0: port 2(bridge_slave_1) entered disabled state [ 101.707413][ T5386] bridge_slave_1: entered allmulticast mode [ 101.733576][ T5386] bridge_slave_1: entered promiscuous mode [ 101.832199][ T5386] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 101.861835][ T5386] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 101.969777][ T5386] team0: Port device team_slave_0 added [ 101.984742][ T5386] team0: Port device team_slave_1 added [ 102.061254][ T5386] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 102.064536][ T5386] 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. [ 102.138472][ T5386] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 102.157993][ T5386] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 102.178590][ T5386] 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. [ 102.218596][ T5386] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 102.359917][ T5386] hsr_slave_0: entered promiscuous mode [ 102.369870][ T5386] hsr_slave_1: entered promiscuous mode [ 102.768004][ T5386] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 102.813421][ T5386] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 102.820167][ T5386] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 102.841354][ T5386] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 103.024160][ T5386] 8021q: adding VLAN 0 to HW filter on device bond0 [ 103.072315][ T5386] 8021q: adding VLAN 0 to HW filter on device team0 [ 103.081678][ T3093] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.085171][ T3093] bridge0: port 1(bridge_slave_0) entered forwarding state [ 103.116883][ T3093] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.120315][ T3093] bridge0: port 2(bridge_slave_1) entered forwarding state [ 103.560937][ T5386] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 103.975399][ T5386] veth0_vlan: entered promiscuous mode [ 103.994532][ T5386] veth1_vlan: entered promiscuous mode [ 104.050088][ T5386] veth0_macvtap: entered promiscuous mode [ 104.062785][ T5386] veth1_macvtap: entered promiscuous mode [ 104.100907][ T5386] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 104.121293][ T5386] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 104.159677][ T4073] netdevsim netdevsim4 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 104.163558][ T4073] netdevsim netdevsim4 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 104.167209][ T4073] netdevsim netdevsim4 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 104.200135][ T4073] netdevsim netdevsim4 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/01/13 09:47:34 executed programs: 0 [ 104.606723][ T48] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 104.620162][ T48] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 104.625020][ T48] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 104.629754][ T48] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 104.632823][ T48] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 105.061381][ T5451] chnl_net:caif_netlink_parms(): no params data found [ 105.280134][ T5451] bridge0: port 1(bridge_slave_0) entered blocking state [ 105.283312][ T5451] bridge0: port 1(bridge_slave_0) entered disabled state [ 105.286595][ T5451] bridge_slave_0: entered allmulticast mode [ 105.300339][ T5451] bridge_slave_0: entered promiscuous mode [ 105.304667][ T5451] bridge0: port 2(bridge_slave_1) entered blocking state [ 105.319821][ T5451] bridge0: port 2(bridge_slave_1) entered disabled state [ 105.323002][ T5451] bridge_slave_1: entered allmulticast mode [ 105.326822][ T5451] bridge_slave_1: entered promiscuous mode [ 105.400807][ T5451] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 105.407302][ T5451] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 105.482635][ T5451] team0: Port device team_slave_0 added [ 105.487003][ T5451] team0: Port device team_slave_1 added [ 105.546666][ T5451] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 105.559104][ T5451] 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. [ 105.591980][ T5451] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 105.610286][ T5451] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 105.613624][ T5451] 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. [ 105.638841][ T5451] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 105.748990][ T5451] hsr_slave_0: entered promiscuous mode [ 105.753176][ T5451] hsr_slave_1: entered promiscuous mode [ 105.768993][ T5451] debugfs: 'hsr0' already exists in 'hsr' [ 105.771623][ T5451] Cannot create hsr debugfs directory [ 106.083803][ T5451] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 106.111233][ T5451] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 106.130171][ T5451] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 106.135943][ T5451] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 106.275845][ T5451] 8021q: adding VLAN 0 to HW filter on device bond0 [ 106.321004][ T5451] 8021q: adding VLAN 0 to HW filter on device team0 [ 106.345906][ T1137] bridge0: port 1(bridge_slave_0) entered blocking state [ 106.349162][ T1137] bridge0: port 1(bridge_slave_0) entered forwarding state [ 106.371340][ T1137] bridge0: port 2(bridge_slave_1) entered blocking state [ 106.374628][ T1137] bridge0: port 2(bridge_slave_1) entered forwarding state [ 106.719690][ T48] Bluetooth: hci0: command tx timeout [ 106.745206][ T5451] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 106.837358][ T5451] veth0_vlan: entered promiscuous mode [ 106.863645][ T5451] veth1_vlan: entered promiscuous mode [ 106.919398][ T5451] veth0_macvtap: entered promiscuous mode [ 106.932208][ T5451] veth1_macvtap: entered promiscuous mode [ 106.965026][ T5451] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 106.982311][ T5451] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 107.022628][ T25] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 107.026671][ T25] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 107.045025][ T1137] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 107.072878][ T1137] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 107.133962][ T1137] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 107.137301][ T1137] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 107.194439][ T1137] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 107.197876][ T1137] 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) [ 108.333357][ T1137] netdevsim netdevsim4 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 108.431236][ T1137] netdevsim netdevsim4 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 108.510840][ T1137] netdevsim netdevsim4 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 108.580354][ T1137] netdevsim netdevsim4 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 108.842939][ T1137] bridge_slave_1: left allmulticast mode [ 108.845617][ T1137] bridge_slave_1: left promiscuous mode [ 108.849166][ T1137] bridge0: port 2(bridge_slave_1) entered disabled state [ 108.901715][ T1137] bridge_slave_0: left allmulticast mode [ 108.904250][ T1137] bridge_slave_0: left promiscuous mode [ 108.906899][ T1137] bridge0: port 1(bridge_slave_0) entered disabled state [ 109.402796][ T1137] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 109.419074][ T1137] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 109.424626][ T1137] bond0 (unregistering): Released all slaves [ 109.652183][ T1137] hsr_slave_0: left promiscuous mode [ 109.662992][ T1137] hsr_slave_1: left promiscuous mode [ 109.669156][ T1137] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 109.672345][ T1137] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 109.698948][ T1137] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 109.702128][ T1137] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 109.742024][ T1137] veth1_macvtap: left promiscuous mode [ 109.744697][ T1137] veth0_macvtap: left promiscuous mode [ 109.747304][ T1137] veth1_vlan: left promiscuous mode [ 109.775339][ T1137] veth0_vlan: left promiscuous mode [ 110.266657][ T1137] team0 (unregistering): Port device team_slave_1 removed [ 110.292489][ T1137] team0 (unregistering): Port device team_slave_0 removed [ 110.834462][ T1137] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 110.891840][ T1137] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 110.945116][ T1137] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 111.011460][ T1137] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 111.184514][ T1137] bridge_slave_1: left allmulticast mode [ 111.187204][ T1137] bridge_slave_1: left promiscuous mode [ 111.197016][ T1137] bridge0: port 2(bridge_slave_1) entered disabled state [ 111.213454][ T1137] bridge_slave_0: left allmulticast mode [ 111.215961][ T1137] bridge_slave_0: left promiscuous mode [ 111.228972][ T1137] bridge0: port 1(bridge_slave_0) entered disabled state [ 111.499744][ T1137] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 111.505831][ T1137] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 111.511353][ T1137] bond0 (unregistering): Released all slaves [ 111.768753][ T1137] hsr_slave_0: left promiscuous mode [ 111.771924][ T1137] hsr_slave_1: left promiscuous mode [ 111.775000][ T1137] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 111.778278][ T1137] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 111.789546][ T1137] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 111.793033][ T1137] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 111.825811][ T1137] veth1_macvtap: left promiscuous mode [ 111.838899][ T1137] veth0_macvtap: left promiscuous mode [ 111.841597][ T1137] veth1_vlan: left promiscuous mode [ 111.843957][ T1137] veth0_vlan: left promiscuous mode [ 112.283371][ T1137] team0 (unregistering): Port device team_slave_1 removed [ 112.311298][ T1137] team0 (unregistering): Port device team_slave_0 removed 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-build493348727=/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 d1b870e1003b 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=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" ./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=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" -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=\"d1b870e1003b52891d2196c1e2ee42fe905010ba\" /usr/bin/ld: /tmp/ccVbX7St.o: in function `Connection::Connect(char const*, char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): 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