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]:31211' (ED25519) to the list of known hosts. 2026/01/28 05:37:37 parsed 1 programs syzkaller login: [ 90.319926][ T5309] cgroup: Unknown subsys name 'net' [ 90.386877][ T5309] cgroup: Unknown subsys name 'cpuset' [ 90.392356][ T5309] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 92.160043][ T5309] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 97.058084][ T788] cfg80211: failed to load regulatory.db [ 98.334135][ T5324] 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. [ 103.427228][ T5374] chnl_net:caif_netlink_parms(): no params data found [ 103.574525][ T5374] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.583883][ T5374] bridge0: port 1(bridge_slave_0) entered disabled state [ 103.587285][ T5374] bridge_slave_0: entered allmulticast mode [ 103.603647][ T5374] bridge_slave_0: entered promiscuous mode [ 103.609347][ T5374] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.612714][ T5374] bridge0: port 2(bridge_slave_1) entered disabled state [ 103.624116][ T5374] bridge_slave_1: entered allmulticast mode [ 103.634729][ T5374] bridge_slave_1: entered promiscuous mode [ 103.686193][ T5374] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 103.692583][ T5374] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 103.756392][ T5374] team0: Port device team_slave_0 added [ 103.765529][ T5374] team0: Port device team_slave_1 added [ 103.814578][ T5374] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 103.817586][ T5374] 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. [ 103.837311][ T5374] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 103.845078][ T5374] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 103.848192][ T5374] 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. [ 103.860314][ T5374] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 103.937133][ T5374] hsr_slave_0: entered promiscuous mode [ 103.944335][ T5374] hsr_slave_1: entered promiscuous mode [ 104.220405][ T5374] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 104.240361][ T5374] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 104.258157][ T5374] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 104.275414][ T5374] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 104.388675][ T5374] 8021q: adding VLAN 0 to HW filter on device bond0 [ 104.407234][ T5374] 8021q: adding VLAN 0 to HW filter on device team0 [ 104.416297][ T3026] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.420535][ T3026] bridge0: port 1(bridge_slave_0) entered forwarding state [ 104.442963][ T3026] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.446325][ T3026] bridge0: port 2(bridge_slave_1) entered forwarding state [ 104.767581][ T5374] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 104.834942][ T5374] veth0_vlan: entered promiscuous mode [ 104.854879][ T5374] veth1_vlan: entered promiscuous mode [ 104.897510][ T5374] veth0_macvtap: entered promiscuous mode [ 104.915917][ T5374] veth1_macvtap: entered promiscuous mode [ 104.944863][ T5374] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 104.964860][ T5374] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 104.986021][ T1134] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.012893][ T1134] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.031394][ T1134] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.045720][ T1134] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 105.176987][ T43] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 105.208473][ T5396] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 105.212760][ T5396] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 105.217652][ T5396] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 105.221464][ T5396] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 105.225440][ T5396] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 105.265349][ T43] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 105.326099][ T43] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 105.376260][ T43] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 105.624190][ T13] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 105.627885][ T13] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 105.684718][ T13] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 105.688312][ T13] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 2026/01/28 05:37:56 executed programs: 0 [ 107.423919][ T4667] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 107.428412][ T4667] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 107.432055][ T4667] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 107.437629][ T4667] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 107.441252][ T4667] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 107.776123][ T43] bridge_slave_1: left allmulticast mode [ 107.778905][ T43] bridge_slave_1: left promiscuous mode [ 107.826881][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 107.836733][ T43] bridge_slave_0: left allmulticast mode [ 107.850180][ T43] bridge_slave_0: left promiscuous mode [ 107.852793][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 108.375776][ T43] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 108.381889][ T43] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 108.387316][ T43] bond0 (unregistering): Released all slaves [ 108.402236][ T5419] chnl_net:caif_netlink_parms(): no params data found [ 108.479129][ T43] hsr_slave_0: left promiscuous mode [ 108.482697][ T43] hsr_slave_1: left promiscuous mode [ 108.499538][ T43] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 108.503016][ T43] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 108.508245][ T43] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 108.511507][ T43] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 108.524049][ T43] veth1_macvtap: left promiscuous mode [ 108.526620][ T43] veth0_macvtap: left promiscuous mode [ 108.529500][ T43] veth1_vlan: left promiscuous mode [ 108.531918][ T43] veth0_vlan: left promiscuous mode [ 108.790481][ T43] team0 (unregistering): Port device team_slave_1 removed [ 108.809849][ T43] team0 (unregistering): Port device team_slave_0 removed [ 109.208599][ T5419] bridge0: port 1(bridge_slave_0) entered blocking state [ 109.225431][ T5419] bridge0: port 1(bridge_slave_0) entered disabled state [ 109.228833][ T5419] bridge_slave_0: entered allmulticast mode [ 109.244832][ T5419] bridge_slave_0: entered promiscuous mode [ 109.264739][ T5419] bridge0: port 2(bridge_slave_1) entered blocking state [ 109.268569][ T5419] bridge0: port 2(bridge_slave_1) entered disabled state [ 109.271736][ T5419] bridge_slave_1: entered allmulticast mode [ 109.323982][ T5419] bridge_slave_1: entered promiscuous mode [ 109.448482][ T5419] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 109.466531][ T5419] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 109.524470][ T4667] Bluetooth: hci0: command tx timeout [ 109.762008][ T5419] team0: Port device team_slave_0 added [ 109.775728][ T5419] team0: Port device team_slave_1 added [ 109.870867][ T5419] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 109.881174][ T5419] 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. [ 109.906139][ T5419] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 109.968826][ T5419] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 109.971957][ T5419] 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. [ 110.007322][ T5419] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 110.179652][ T5419] hsr_slave_0: entered promiscuous mode [ 110.185210][ T5419] hsr_slave_1: entered promiscuous mode [ 110.727901][ T5419] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 110.750483][ T5419] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 110.768137][ T5419] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 110.784933][ T5419] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 110.926823][ T5419] 8021q: adding VLAN 0 to HW filter on device bond0 [ 110.950428][ T5419] 8021q: adding VLAN 0 to HW filter on device team0 [ 110.987793][ T3026] bridge0: port 1(bridge_slave_0) entered blocking state [ 110.991126][ T3026] bridge0: port 1(bridge_slave_0) entered forwarding state [ 111.005549][ T3026] bridge0: port 2(bridge_slave_1) entered blocking state [ 111.008743][ T3026] bridge0: port 2(bridge_slave_1) entered forwarding state [ 111.066919][ T5419] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 111.339142][ T5419] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 111.405287][ T5419] veth0_vlan: entered promiscuous mode [ 111.430580][ T5419] veth1_vlan: entered promiscuous mode [ 111.468164][ T5419] veth0_macvtap: entered promiscuous mode [ 111.494574][ T5419] veth1_macvtap: entered promiscuous mode [ 111.518351][ T5419] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 111.537989][ T5419] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 111.576333][ T3026] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.596026][ T3026] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.600044][ T3026] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.604637][ T4667] Bluetooth: hci0: command tx timeout [ 111.626851][ T43] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.701803][ T13] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 111.720661][ T13] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 111.769200][ T13] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 111.772756][ T13] 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) [ 112.999853][ T3026] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.266332][ T3026] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.735566][ T3026] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.776725][ T3026] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.905585][ T3026] bridge_slave_1: left allmulticast mode [ 114.908044][ T3026] bridge_slave_1: left promiscuous mode [ 114.910535][ T3026] bridge0: port 2(bridge_slave_1) entered disabled state [ 114.926655][ T3026] bridge_slave_0: left allmulticast mode [ 114.929140][ T3026] bridge_slave_0: left promiscuous mode [ 114.931813][ T3026] bridge0: port 1(bridge_slave_0) entered disabled state [ 115.313172][ T3026] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 115.319515][ T3026] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 115.324635][ T3026] bond0 (unregistering): Released all slaves [ 115.563915][ T3026] hsr_slave_0: left promiscuous mode [ 115.573900][ T3026] hsr_slave_1: left promiscuous mode [ 115.576748][ T3026] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 115.579978][ T3026] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 115.600267][ T3026] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 115.604431][ T3026] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 115.626431][ T3026] veth1_macvtap: left promiscuous mode [ 115.628761][ T3026] veth0_macvtap: left promiscuous mode [ 115.631239][ T3026] veth1_vlan: left promiscuous mode [ 115.644145][ T3026] veth0_vlan: left promiscuous mode [ 115.907785][ T3026] team0 (unregistering): Port device team_slave_1 removed [ 115.924800][ T3026] 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-build3113972509=/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 a6c9c7312290 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=a6c9c7312290da5bca2fc1be4872a7aeefb6e3ea -X github.com/google/syzkaller/prog.gitRevisionDate=20251104-181356" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=a6c9c7312290da5bca2fc1be4872a7aeefb6e3ea -X github.com/google/syzkaller/prog.gitRevisionDate=20251104-181356" ./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=a6c9c7312290da5bca2fc1be4872a7aeefb6e3ea -X github.com/google/syzkaller/prog.gitRevisionDate=20251104-181356" -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=\"a6c9c7312290da5bca2fc1be4872a7aeefb6e3ea\" /usr/bin/ld: /tmp/cc9o7fXd.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