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]:59987' (ED25519) to the list of known hosts. 2026/01/12 06:07:38 parsed 1 programs syzkaller login: [ 89.483316][ T5328] cgroup: Unknown subsys name 'net' [ 89.548201][ T5328] cgroup: Unknown subsys name 'cpuset' [ 89.553373][ T5328] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 91.299875][ T5328] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 91.900020][ T9] cfg80211: failed to load regulatory.db [ 96.210650][ 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. [ 97.045639][ T5354] chnl_net:caif_netlink_parms(): no params data found [ 97.188394][ T5354] bridge0: port 1(bridge_slave_0) entered blocking state [ 97.194590][ T5354] bridge0: port 1(bridge_slave_0) entered disabled state [ 97.198064][ T5354] bridge_slave_0: entered allmulticast mode [ 97.214662][ T5354] bridge_slave_0: entered promiscuous mode [ 97.219319][ T5354] bridge0: port 2(bridge_slave_1) entered blocking state [ 97.222089][ T5354] bridge0: port 2(bridge_slave_1) entered disabled state [ 97.235339][ T5354] bridge_slave_1: entered allmulticast mode [ 97.239045][ T5354] bridge_slave_1: entered promiscuous mode [ 97.282542][ T5354] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 97.298206][ T5354] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 97.329885][ T5354] team0: Port device team_slave_0 added [ 97.334361][ T5354] team0: Port device team_slave_1 added [ 97.356785][ T5354] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 97.359694][ T5354] 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. [ 97.370659][ T5354] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 97.377752][ T5354] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 97.380625][ T5354] 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. [ 97.392131][ T5354] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 97.435360][ T5354] hsr_slave_0: entered promiscuous mode [ 97.440117][ T5354] hsr_slave_1: entered promiscuous mode [ 97.702576][ T5354] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 97.721429][ T5354] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 97.745417][ T5354] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 97.752737][ T5354] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 97.805442][ T5354] bridge0: port 2(bridge_slave_1) entered blocking state [ 97.808757][ T5354] bridge0: port 2(bridge_slave_1) entered forwarding state [ 97.812705][ T5354] bridge0: port 1(bridge_slave_0) entered blocking state [ 97.816092][ T5354] bridge0: port 1(bridge_slave_0) entered forwarding state [ 97.947278][ T5354] 8021q: adding VLAN 0 to HW filter on device bond0 [ 97.966654][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 97.973454][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 97.997482][ T5354] 8021q: adding VLAN 0 to HW filter on device team0 [ 98.014467][ T4069] bridge0: port 1(bridge_slave_0) entered blocking state [ 98.017835][ T4069] bridge0: port 1(bridge_slave_0) entered forwarding state [ 98.039654][ T4069] bridge0: port 2(bridge_slave_1) entered blocking state [ 98.042962][ T4069] bridge0: port 2(bridge_slave_1) entered forwarding state [ 98.110484][ T5354] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 98.130611][ T5354] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 98.395187][ T5354] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 98.460898][ T5354] veth0_vlan: entered promiscuous mode [ 98.479918][ T5354] veth1_vlan: entered promiscuous mode [ 98.521404][ T5354] veth0_macvtap: entered promiscuous mode [ 98.539320][ T5354] veth1_macvtap: entered promiscuous mode [ 98.568305][ T5354] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 98.585494][ T5354] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 98.616602][ T4540] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.643167][ T4540] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.656417][ T4540] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.660338][ T4540] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 98.907960][ T13] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 99.243674][ T4684] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 99.255102][ T4684] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 99.258878][ T4684] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 99.262586][ T4684] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 99.267204][ T4684] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 99.816523][ T3007] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 99.820032][ T3007] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 99.895907][ T4540] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 99.899378][ T4540] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 100.099213][ T13] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 101.386562][ T13] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 101.527874][ T13] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 101.862395][ T13] bridge_slave_1: left allmulticast mode [ 101.888599][ T13] bridge_slave_1: left promiscuous mode [ 101.891945][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 101.977505][ T13] bridge_slave_0: left allmulticast mode [ 101.980063][ T13] bridge_slave_0: left promiscuous mode [ 101.982775][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 102.947506][ T13] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 102.955509][ T13] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 102.966110][ T13] bond0 (unregistering): Released all slaves [ 103.165269][ T13] hsr_slave_0: left promiscuous mode [ 103.180875][ T13] hsr_slave_1: left promiscuous mode [ 103.204982][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 103.208253][ T13] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 103.226060][ T13] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 103.229298][ T13] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 103.297167][ T13] veth1_macvtap: left promiscuous mode [ 103.299773][ T13] veth0_macvtap: left promiscuous mode [ 103.303806][ T13] veth1_vlan: left promiscuous mode [ 103.344755][ T13] veth0_vlan: left promiscuous mode [ 104.425663][ T13] team0 (unregistering): Port device team_slave_1 removed [ 104.479678][ T13] team0 (unregistering): Port device team_slave_0 removed 2026/01/12 06:08:00 executed programs: 0 [ 109.358213][ T46] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 109.364838][ T46] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 109.367899][ T46] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 109.371559][ T46] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 109.375640][ T46] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 109.557897][ T5472] chnl_net:caif_netlink_parms(): no params data found [ 109.621289][ T5472] bridge0: port 1(bridge_slave_0) entered blocking state [ 109.624759][ T5472] bridge0: port 1(bridge_slave_0) entered disabled state [ 109.628292][ T5472] bridge_slave_0: entered allmulticast mode [ 109.632111][ T5472] bridge_slave_0: entered promiscuous mode [ 109.637134][ T5472] bridge0: port 2(bridge_slave_1) entered blocking state [ 109.640582][ T5472] bridge0: port 2(bridge_slave_1) entered disabled state [ 109.643763][ T5472] bridge_slave_1: entered allmulticast mode [ 109.648892][ T5472] bridge_slave_1: entered promiscuous mode [ 109.673494][ T5472] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 109.679982][ T5472] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 109.703180][ T5472] team0: Port device team_slave_0 added [ 109.707846][ T5472] team0: Port device team_slave_1 added [ 109.729534][ T5472] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 109.732672][ T5472] 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. [ 109.743776][ T5472] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 109.750107][ T5472] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 109.753063][ T5472] 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. [ 109.765409][ T5472] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 109.798217][ T5472] hsr_slave_0: entered promiscuous mode [ 109.801432][ T5472] hsr_slave_1: entered promiscuous mode [ 110.206830][ T5472] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 110.227076][ T5472] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 110.232495][ T5472] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 110.247971][ T5472] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 110.286185][ T5472] bridge0: port 2(bridge_slave_1) entered blocking state [ 110.289549][ T5472] bridge0: port 2(bridge_slave_1) entered forwarding state [ 110.292790][ T5472] bridge0: port 1(bridge_slave_0) entered blocking state [ 110.296119][ T5472] bridge0: port 1(bridge_slave_0) entered forwarding state [ 110.411155][ T5472] 8021q: adding VLAN 0 to HW filter on device bond0 [ 110.433681][ T1127] bridge0: port 1(bridge_slave_0) entered disabled state [ 110.448545][ T1127] bridge0: port 2(bridge_slave_1) entered disabled state [ 110.459684][ T5472] 8021q: adding VLAN 0 to HW filter on device team0 [ 110.483230][ T1127] bridge0: port 1(bridge_slave_0) entered blocking state [ 110.486752][ T1127] bridge0: port 1(bridge_slave_0) entered forwarding state [ 110.509271][ T1127] bridge0: port 2(bridge_slave_1) entered blocking state [ 110.512480][ T1127] bridge0: port 2(bridge_slave_1) entered forwarding state [ 110.838926][ T5472] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 110.912974][ T5472] veth0_vlan: entered promiscuous mode [ 110.938490][ T5472] veth1_vlan: entered promiscuous mode [ 110.977518][ T5472] veth0_macvtap: entered promiscuous mode [ 110.982563][ T5472] veth1_macvtap: entered promiscuous mode [ 111.022471][ T5472] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 111.039483][ T5472] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 111.068930][ T3299] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.073292][ T3299] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.096306][ T3299] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.123466][ T3299] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.225587][ T1127] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 111.239589][ T1127] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 111.285819][ T3299] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 111.289348][ T3299] 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) [ 111.424345][ T46] Bluetooth: hci0: command tx timeout [ 112.602842][ T3299] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 113.745807][ T3299] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.166242][ T3299] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.197444][ T3299] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.320068][ T3299] bridge_slave_1: left allmulticast mode [ 114.322476][ T3299] bridge_slave_1: left promiscuous mode [ 114.334693][ T3299] bridge0: port 2(bridge_slave_1) entered disabled state [ 114.340830][ T3299] bridge_slave_0: left allmulticast mode [ 114.349781][ T3299] bridge_slave_0: left promiscuous mode [ 114.353288][ T3299] bridge0: port 1(bridge_slave_0) entered disabled state [ 114.657820][ T3299] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 114.663368][ T3299] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 114.669938][ T3299] bond0 (unregistering): Released all slaves [ 114.876666][ T3299] hsr_slave_0: left promiscuous mode [ 114.888331][ T3299] hsr_slave_1: left promiscuous mode [ 114.904824][ T3299] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 114.908293][ T3299] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 114.912119][ T3299] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 114.927231][ T3299] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 114.948055][ T3299] veth1_macvtap: left promiscuous mode [ 114.950582][ T3299] veth0_macvtap: left promiscuous mode [ 114.953132][ T3299] veth1_vlan: left promiscuous mode [ 114.964909][ T3299] veth0_vlan: left promiscuous mode [ 115.372182][ T3299] team0 (unregistering): Port device team_slave_1 removed [ 115.399196][ T3299] 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-build610676108=/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/ccQBvQ16.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