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]:26845' (ED25519) to the list of known hosts. 2026/01/16 07:04:45 parsed 1 programs syzkaller login: [ 88.240690][ T5324] cgroup: Unknown subsys name 'net' [ 88.311431][ T5324] cgroup: Unknown subsys name 'cpuset' [ 88.320200][ T5324] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 89.989744][ T5324] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 94.994907][ T5341] 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. [ 95.961204][ T5352] chnl_net:caif_netlink_parms(): no params data found [ 96.085650][ T5352] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.089614][ T5352] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.092791][ T5352] bridge_slave_0: entered allmulticast mode [ 96.096666][ T5352] bridge_slave_0: entered promiscuous mode [ 96.103153][ T5352] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.106373][ T5352] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.110147][ T5352] bridge_slave_1: entered allmulticast mode [ 96.113873][ T5352] bridge_slave_1: entered promiscuous mode [ 96.139993][ T5352] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 96.147754][ T5352] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 96.173989][ T5352] team0: Port device team_slave_0 added [ 96.179092][ T5352] team0: Port device team_slave_1 added [ 96.201096][ T5352] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 96.204210][ T5352] 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. [ 96.215815][ T5352] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 96.222699][ T5352] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 96.226084][ T5352] 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. [ 96.237497][ T5352] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 96.279395][ T5352] hsr_slave_0: entered promiscuous mode [ 96.282638][ T5352] hsr_slave_1: entered promiscuous mode [ 96.597523][ T5352] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 96.621730][ T5352] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 96.631114][ T5352] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 96.652993][ T5352] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 96.709937][ T5352] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.713461][ T5352] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.717535][ T5352] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.720678][ T5352] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.834557][ T5352] 8021q: adding VLAN 0 to HW filter on device bond0 [ 96.861548][ T2614] bridge0: port 1(bridge_slave_0) entered disabled state [ 96.865711][ T2614] bridge0: port 2(bridge_slave_1) entered disabled state [ 96.886422][ T5352] 8021q: adding VLAN 0 to HW filter on device team0 [ 96.908675][ T3046] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.912005][ T3046] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.929917][ T3046] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.933006][ T3046] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.974227][ T10] cfg80211: failed to load regulatory.db [ 97.237751][ T5352] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 97.310308][ T5352] veth0_vlan: entered promiscuous mode [ 97.319484][ T5352] veth1_vlan: entered promiscuous mode [ 97.364232][ T5352] veth0_macvtap: entered promiscuous mode [ 97.386141][ T5352] veth1_macvtap: entered promiscuous mode [ 97.412615][ T5352] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 97.425726][ T5352] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 97.446152][ T2614] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 97.460047][ T2614] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 97.463859][ T2614] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 97.483385][ T2614] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 97.680215][ T2614] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 97.744179][ T2614] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 97.795921][ T2614] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 97.929914][ T2614] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 99.998866][ T2614] bridge_slave_1: left allmulticast mode [ 100.001541][ T2614] bridge_slave_1: left promiscuous mode [ 100.004427][ T2614] bridge0: port 2(bridge_slave_1) entered disabled state [ 100.117892][ T2614] bridge_slave_0: left allmulticast mode [ 100.120438][ T2614] bridge_slave_0: left promiscuous mode [ 100.123117][ T2614] bridge0: port 1(bridge_slave_0) entered disabled state [ 100.921468][ T2614] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 100.948268][ T2614] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 100.953233][ T2614] bond0 (unregistering): Released all slaves [ 101.081768][ T2614] hsr_slave_0: left promiscuous mode [ 101.088098][ T2614] hsr_slave_1: left promiscuous mode [ 101.099263][ T2614] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 101.102522][ T2614] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 101.117241][ T2614] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 101.120806][ T2614] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 101.143178][ T2614] veth1_macvtap: left promiscuous mode [ 101.146320][ T2614] veth0_macvtap: left promiscuous mode [ 101.157887][ T2614] veth1_vlan: left promiscuous mode [ 101.160429][ T2614] veth0_vlan: left promiscuous mode [ 101.793028][ T2614] team0 (unregistering): Port device team_slave_1 removed [ 101.815916][ T2614] team0 (unregistering): Port device team_slave_0 removed [ 102.596754][ T4682] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 102.602254][ T4682] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 102.606030][ T4682] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 102.610001][ T4682] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 102.615101][ T4682] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 104.909774][ T2614] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 104.913342][ T2614] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 104.970218][ T2614] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 104.973791][ T2614] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 2026/01/16 07:05:06 executed programs: 0 [ 106.656292][ T47] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 106.671251][ T47] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 106.674885][ T47] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 106.680304][ T47] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 106.684133][ T47] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 106.861691][ T5471] chnl_net:caif_netlink_parms(): no params data found [ 106.933436][ T5471] bridge0: port 1(bridge_slave_0) entered blocking state [ 106.936609][ T5471] bridge0: port 1(bridge_slave_0) entered disabled state [ 106.940402][ T5471] bridge_slave_0: entered allmulticast mode [ 106.944375][ T5471] bridge_slave_0: entered promiscuous mode [ 106.949408][ T5471] bridge0: port 2(bridge_slave_1) entered blocking state [ 106.952796][ T5471] bridge0: port 2(bridge_slave_1) entered disabled state [ 106.955970][ T5471] bridge_slave_1: entered allmulticast mode [ 106.960831][ T5471] bridge_slave_1: entered promiscuous mode [ 106.984016][ T5471] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 106.990113][ T5471] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 107.013999][ T5471] team0: Port device team_slave_0 added [ 107.019179][ T5471] team0: Port device team_slave_1 added [ 107.039222][ T5471] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 107.042215][ T5471] 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. [ 107.055262][ T5471] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 107.061997][ T5471] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 107.065133][ T5471] 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. [ 107.077453][ T5471] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 107.110874][ T5471] hsr_slave_0: entered promiscuous mode [ 107.113904][ T5471] hsr_slave_1: entered promiscuous mode [ 107.600771][ T5471] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 107.619949][ T5471] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 107.630173][ T5471] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 107.649723][ T5471] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 107.686082][ T5471] bridge0: port 2(bridge_slave_1) entered blocking state [ 107.689355][ T5471] bridge0: port 2(bridge_slave_1) entered forwarding state [ 107.692709][ T5471] bridge0: port 1(bridge_slave_0) entered blocking state [ 107.695709][ T5471] bridge0: port 1(bridge_slave_0) entered forwarding state [ 107.813089][ T5471] 8021q: adding VLAN 0 to HW filter on device bond0 [ 107.841093][ T2614] bridge0: port 1(bridge_slave_0) entered disabled state [ 107.844893][ T2614] bridge0: port 2(bridge_slave_1) entered disabled state [ 107.863061][ T5471] 8021q: adding VLAN 0 to HW filter on device team0 [ 107.882240][ T1058] bridge0: port 1(bridge_slave_0) entered blocking state [ 107.885493][ T1058] bridge0: port 1(bridge_slave_0) entered forwarding state [ 107.908083][ T1058] bridge0: port 2(bridge_slave_1) entered blocking state [ 107.910989][ T1058] bridge0: port 2(bridge_slave_1) entered forwarding state [ 108.245713][ T5471] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 108.311413][ T5471] veth0_vlan: entered promiscuous mode [ 108.331380][ T5471] veth1_vlan: entered promiscuous mode [ 108.383903][ T5471] veth0_macvtap: entered promiscuous mode [ 108.400061][ T5471] veth1_macvtap: entered promiscuous mode [ 108.439924][ T5471] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 108.460642][ T5471] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 108.478080][ T2614] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.481456][ T2614] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.484751][ T2614] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.502880][ T2614] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.593330][ T2614] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.612613][ T2614] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 108.651779][ T2614] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.655094][ T2614] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 108.737364][ T47] Bluetooth: hci0: command tx timeout SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) [ 109.969198][ T1058] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 111.309610][ T1058] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 111.537990][ T1058] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 111.569748][ T1058] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 111.678359][ T1058] bridge_slave_1: left allmulticast mode [ 111.680917][ T1058] bridge_slave_1: left promiscuous mode [ 111.683374][ T1058] bridge0: port 2(bridge_slave_1) entered disabled state [ 111.689798][ T1058] bridge_slave_0: left allmulticast mode [ 111.692321][ T1058] bridge_slave_0: left promiscuous mode [ 111.694965][ T1058] bridge0: port 1(bridge_slave_0) entered disabled state [ 111.998846][ T1058] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 112.003446][ T1058] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 112.008805][ T1058] bond0 (unregistering): Released all slaves [ 112.209666][ T1058] hsr_slave_0: left promiscuous mode [ 112.218717][ T1058] hsr_slave_1: left promiscuous mode [ 112.222108][ T1058] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 112.225587][ T1058] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 112.249955][ T1058] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 112.253346][ T1058] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 112.275787][ T1058] veth1_macvtap: left promiscuous mode [ 112.278677][ T1058] veth0_macvtap: left promiscuous mode [ 112.281158][ T1058] veth1_vlan: left promiscuous mode [ 112.283555][ T1058] veth0_vlan: left promiscuous mode [ 112.648162][ T1058] team0 (unregistering): Port device team_slave_1 removed [ 112.682499][ T1058] 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-build2904444102=/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/ccAsfx6U.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