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]:56254' (ED25519) to the list of known hosts. 2026/01/24 02:53:48 parsed 1 programs syzkaller login: [ 90.648408][ T5322] cgroup: Unknown subsys name 'net' [ 90.733858][ T5322] cgroup: Unknown subsys name 'cpuset' [ 90.741247][ T5322] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 92.734111][ T5322] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 96.969976][ T787] cfg80211: failed to load regulatory.db [ 98.230785][ T5340] 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. [ 99.670121][ T5352] chnl_net:caif_netlink_parms(): no params data found [ 99.822664][ T5352] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.826643][ T5352] bridge0: port 1(bridge_slave_0) entered disabled state [ 99.830345][ T5352] bridge_slave_0: entered allmulticast mode [ 99.840330][ T5352] bridge_slave_0: entered promiscuous mode [ 99.848461][ T5352] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.859864][ T5352] bridge0: port 2(bridge_slave_1) entered disabled state [ 99.863234][ T5352] bridge_slave_1: entered allmulticast mode [ 99.880461][ T5352] bridge_slave_1: entered promiscuous mode [ 99.924823][ T5352] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 99.942796][ T5352] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 99.987553][ T5352] team0: Port device team_slave_0 added [ 100.002650][ T5352] team0: Port device team_slave_1 added [ 100.050188][ T5352] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 100.053215][ 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. [ 100.079713][ T5352] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 100.090878][ T5352] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 100.093661][ 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. [ 100.120380][ T5352] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 100.203017][ T5352] hsr_slave_0: entered promiscuous mode [ 100.210984][ T5352] hsr_slave_1: entered promiscuous mode [ 100.521864][ T5352] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 100.546330][ T5352] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 100.571779][ T5352] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 100.581855][ T5352] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 100.734823][ T5352] 8021q: adding VLAN 0 to HW filter on device bond0 [ 100.763943][ T5352] 8021q: adding VLAN 0 to HW filter on device team0 [ 100.805841][ T121] bridge0: port 1(bridge_slave_0) entered blocking state [ 100.809232][ T121] bridge0: port 1(bridge_slave_0) entered forwarding state [ 100.822078][ T121] bridge0: port 2(bridge_slave_1) entered blocking state [ 100.825102][ T121] bridge0: port 2(bridge_slave_1) entered forwarding state [ 101.153484][ T5352] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 101.223844][ T5352] veth0_vlan: entered promiscuous mode [ 101.245023][ T5352] veth1_vlan: entered promiscuous mode [ 101.287928][ T5352] veth0_macvtap: entered promiscuous mode [ 101.303761][ T5352] veth1_macvtap: entered promiscuous mode [ 101.331823][ T5352] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 101.351697][ T5352] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 101.377023][ T121] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 101.390987][ T121] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 101.400379][ T121] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 101.404248][ T121] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 101.693061][ T3176] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 101.852861][ T3176] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 101.961651][ T3176] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 102.042799][ T3176] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 103.992351][ T3176] bridge_slave_1: left allmulticast mode [ 103.995078][ T3176] bridge_slave_1: left promiscuous mode [ 103.998167][ T3176] bridge0: port 2(bridge_slave_1) entered disabled state [ 104.051554][ T3176] bridge_slave_0: left allmulticast mode [ 104.054062][ T3176] bridge_slave_0: left promiscuous mode [ 104.057218][ T3176] bridge0: port 1(bridge_slave_0) entered disabled state [ 104.545415][ T3176] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 104.553764][ T3176] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 104.562155][ T3176] bond0 (unregistering): Released all slaves [ 104.659968][ T3176] hsr_slave_0: left promiscuous mode [ 104.670937][ T3176] hsr_slave_1: left promiscuous mode [ 104.674054][ T3176] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 104.677385][ T3176] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 104.690798][ T3176] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 104.694143][ T3176] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 104.725318][ T3176] veth1_macvtap: left promiscuous mode [ 104.728163][ T3176] veth0_macvtap: left promiscuous mode [ 104.740063][ T3176] veth1_vlan: left promiscuous mode [ 104.742729][ T3176] veth0_vlan: left promiscuous mode [ 105.313572][ T3176] team0 (unregistering): Port device team_slave_1 removed [ 105.339355][ T3176] team0 (unregistering): Port device team_slave_0 removed [ 105.796058][ T121] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 105.808579][ T121] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 105.881616][ T2675] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 105.885170][ T2675] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 107.394781][ T47] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 107.400561][ T47] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 107.404312][ T47] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 107.407829][ T47] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 107.411305][ T47] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 2026/01/24 02:54:09 executed programs: 0 [ 109.779486][ T4679] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 109.787415][ T4679] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 109.798937][ T4679] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 109.802802][ T4679] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 109.806405][ T4679] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 109.971073][ T5468] chnl_net:caif_netlink_parms(): no params data found [ 110.035694][ T5468] bridge0: port 1(bridge_slave_0) entered blocking state [ 110.038872][ T5468] bridge0: port 1(bridge_slave_0) entered disabled state [ 110.042879][ T5468] bridge_slave_0: entered allmulticast mode [ 110.046892][ T5468] bridge_slave_0: entered promiscuous mode [ 110.052635][ T5468] bridge0: port 2(bridge_slave_1) entered blocking state [ 110.055850][ T5468] bridge0: port 2(bridge_slave_1) entered disabled state [ 110.059294][ T5468] bridge_slave_1: entered allmulticast mode [ 110.063805][ T5468] bridge_slave_1: entered promiscuous mode [ 110.088619][ T5468] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 110.096699][ T5468] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 110.121522][ T5468] team0: Port device team_slave_0 added [ 110.126364][ T5468] team0: Port device team_slave_1 added [ 110.147693][ T5468] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 110.151139][ T5468] 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. [ 110.162856][ T5468] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 110.169064][ T5468] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 110.173068][ T5468] 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. [ 110.184937][ T5468] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 110.222828][ T5468] hsr_slave_0: entered promiscuous mode [ 110.226078][ T5468] hsr_slave_1: entered promiscuous mode [ 110.681832][ T5468] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 110.701570][ T5468] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 110.722897][ T5468] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 110.733386][ T5468] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 110.781661][ T5468] bridge0: port 2(bridge_slave_1) entered blocking state [ 110.785282][ T5468] bridge0: port 2(bridge_slave_1) entered forwarding state [ 110.789391][ T5468] bridge0: port 1(bridge_slave_0) entered blocking state [ 110.792753][ T5468] bridge0: port 1(bridge_slave_0) entered forwarding state [ 110.942109][ T5468] 8021q: adding VLAN 0 to HW filter on device bond0 [ 110.969901][ T2675] bridge0: port 1(bridge_slave_0) entered disabled state [ 110.978354][ T2675] bridge0: port 2(bridge_slave_1) entered disabled state [ 111.027385][ T5468] 8021q: adding VLAN 0 to HW filter on device team0 [ 111.048391][ T54] bridge0: port 1(bridge_slave_0) entered blocking state [ 111.051782][ T54] bridge0: port 1(bridge_slave_0) entered forwarding state [ 111.075709][ T54] bridge0: port 2(bridge_slave_1) entered blocking state [ 111.078982][ T54] bridge0: port 2(bridge_slave_1) entered forwarding state [ 111.135348][ T5468] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 111.151290][ T5468] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 111.425603][ T5468] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 111.498264][ T5468] veth0_vlan: entered promiscuous mode [ 111.516762][ T5468] veth1_vlan: entered promiscuous mode [ 111.581679][ T5468] veth0_macvtap: entered promiscuous mode [ 111.588067][ T5468] veth1_macvtap: entered promiscuous mode [ 111.636163][ T5468] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 111.654486][ T5468] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 111.681751][ T54] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.693652][ T54] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.697613][ T54] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.721063][ T54] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.841543][ T4679] Bluetooth: hci0: command tx timeout [ 111.846273][ T54] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 111.862418][ T54] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 111.915942][ T2675] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 111.919437][ T2675] 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) [ 113.185721][ T2675] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.092939][ T2675] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.779520][ T2675] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.814448][ T2675] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.940222][ T2675] bridge_slave_1: left allmulticast mode [ 114.942789][ T2675] bridge_slave_1: left promiscuous mode [ 114.945432][ T2675] bridge0: port 2(bridge_slave_1) entered disabled state [ 114.952400][ T2675] bridge_slave_0: left allmulticast mode [ 114.961053][ T2675] bridge_slave_0: left promiscuous mode [ 114.963728][ T2675] bridge0: port 1(bridge_slave_0) entered disabled state [ 115.318964][ T2675] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 115.324999][ T2675] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 115.331318][ T2675] bond0 (unregistering): Released all slaves [ 115.592113][ T2675] hsr_slave_0: left promiscuous mode [ 115.595090][ T2675] hsr_slave_1: left promiscuous mode [ 115.598227][ T2675] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 115.609818][ T2675] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 115.620539][ T2675] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 115.623809][ T2675] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 115.653456][ T2675] veth1_macvtap: left promiscuous mode [ 115.656041][ T2675] veth0_macvtap: left promiscuous mode [ 115.658586][ T2675] veth1_vlan: left promiscuous mode [ 115.672194][ T2675] veth0_vlan: left promiscuous mode [ 116.054946][ T2675] team0 (unregistering): Port device team_slave_1 removed [ 116.083890][ T2675] 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-build300597340=/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/ccfY90mY.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