SYZFAIL: failed to recv rpc SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) syzkaller login: [ 92.019293][ T10] cfg80211: failed to load regulatory.db Warning: Permanently added '[localhost]:16403' (ED25519) to the list of known hosts. 2026/09/22 06:08:15 parsed 1 programs [ 97.673575][ T5284] cgroup: Unknown subsys name 'net' [ 97.752238][ T5284] cgroup: Unknown subsys name 'cpuset' [ 97.761227][ T5284] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 99.434755][ T5284] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 105.131913][ T5299] soft_limit_in_bytes is deprecated and will be removed. Writing any value to this file has no effect. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 109.947338][ T5330] bridge0: port 1(bridge_slave_0) entered blocking state [ 109.948319][ T5330] bridge0: port 1(bridge_slave_0) entered disabled state [ 109.948533][ T5330] bridge_slave_0: entered allmulticast mode [ 109.950235][ T5330] bridge_slave_0: entered promiscuous mode [ 109.970377][ T5330] bridge0: port 2(bridge_slave_1) entered blocking state [ 109.970488][ T5330] bridge0: port 2(bridge_slave_1) entered disabled state [ 109.970786][ T5330] bridge_slave_1: entered allmulticast mode [ 109.972122][ T5330] bridge_slave_1: entered promiscuous mode [ 110.050821][ T5330] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 110.053280][ T5330] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 110.111747][ T5330] team0: Port device team_slave_0 added [ 110.125569][ T5330] team0: Port device team_slave_1 added [ 110.170372][ T5330] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 110.170389][ T5330] 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. [ 110.170405][ T5330] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 110.196137][ T5330] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 110.196150][ T5330] 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. [ 110.196166][ T5330] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 110.297826][ T5330] hsr_slave_0: entered promiscuous mode [ 110.309265][ T5330] hsr_slave_1: entered promiscuous mode [ 110.706422][ T5330] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 110.736834][ T5330] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 110.737629][ T5330] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 110.744033][ T5330] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 110.758928][ T5330] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 110.772782][ T5330] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 110.774380][ T5330] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 110.807319][ T5330] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 111.080884][ T5330] 8021q: adding VLAN 0 to HW filter on device bond0 [ 111.144092][ T5330] 8021q: adding VLAN 0 to HW filter on device team0 [ 111.182108][ T25] bridge0: port 1(bridge_slave_0) entered blocking state [ 111.182224][ T25] bridge0: port 1(bridge_slave_0) entered forwarding state [ 111.200196][ T25] bridge0: port 2(bridge_slave_1) entered blocking state [ 111.200282][ T25] bridge0: port 2(bridge_slave_1) entered forwarding state [ 112.011269][ T5330] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 112.074511][ T5330] veth0_vlan: entered promiscuous mode [ 112.087290][ T5330] veth1_vlan: entered promiscuous mode [ 112.131288][ T5330] veth0_macvtap: entered promiscuous mode [ 112.141479][ T5330] veth1_macvtap: entered promiscuous mode [ 112.168311][ T5330] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 112.183282][ T5330] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 112.295572][ T25] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 112.295618][ T25] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 112.295638][ T25] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 112.295659][ T25] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 112.483592][ T25] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 113.063825][ T25] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 113.617775][ T25] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.109545][ T25] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.497645][ T162] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 114.497669][ T162] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 114.768865][ T162] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 114.768888][ T162] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 114.803787][ T25] bridge_slave_1: left allmulticast mode [ 114.803833][ T25] bridge_slave_1: left promiscuous mode [ 114.804964][ T25] bridge0: port 2(bridge_slave_1) entered disabled state [ 114.830545][ T25] bridge_slave_0: left allmulticast mode [ 114.830570][ T25] bridge_slave_0: left promiscuous mode [ 114.830718][ T25] bridge0: port 1(bridge_slave_0) entered disabled state [ 115.042244][ T25] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 115.052772][ T25] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 115.054821][ T25] bond0 (unregistering): Released all slaves [ 115.225470][ T25] hsr_slave_0: left promiscuous mode [ 115.239576][ T25] hsr_slave_1: left promiscuous mode [ 115.242597][ T25] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 115.242657][ T25] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 115.259268][ T25] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 115.259288][ T25] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 115.422635][ T25] veth1_macvtap: left promiscuous mode [ 115.423355][ T25] veth0_macvtap: left promiscuous mode [ 115.435194][ T25] veth1_vlan: left promiscuous mode [ 115.435385][ T25] veth0_vlan: left promiscuous mode [ 116.020555][ T25] team0 (unregistering): Port device team_slave_1 removed [ 116.040948][ T25] team0 (unregistering): Port device team_slave_0 removed [ 116.181998][ T4987] 8021q: adding VLAN 0 to HW filter on device eth2 [ 116.798508][ T46] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 116.801173][ T46] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 116.801649][ T46] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 116.802297][ T46] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 116.803153][ T46] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 117.157524][ T4987] 8021q: adding VLAN 0 to HW filter on device eth3 [ 118.189521][ T4987] 8021q: adding VLAN 0 to HW filter on device eth4 [ 118.894460][ T4987] 8021q: adding VLAN 0 to HW filter on device eth5 2026/09/22 06:08:40 executed programs: 0 [ 119.458818][ T4641] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 119.461442][ T4641] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 119.462444][ T4641] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 119.462995][ T4641] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 119.463399][ T4641] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 120.093417][ T5437] bridge0: port 1(bridge_slave_0) entered blocking state [ 120.093557][ T5437] bridge0: port 1(bridge_slave_0) entered disabled state [ 120.093658][ T5437] bridge_slave_0: entered allmulticast mode [ 120.104595][ T5437] bridge_slave_0: entered promiscuous mode [ 120.113091][ T5437] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.113214][ T5437] bridge0: port 2(bridge_slave_1) entered disabled state [ 120.113311][ T5437] bridge_slave_1: entered allmulticast mode [ 120.114605][ T5437] bridge_slave_1: entered promiscuous mode [ 120.158786][ T5437] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 120.163714][ T5437] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 120.195616][ T5437] team0: Port device team_slave_0 added [ 120.197908][ T5437] team0: Port device team_slave_1 added [ 120.225306][ T5437] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 120.225322][ T5437] 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. [ 120.225338][ T5437] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 120.228768][ T5437] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 120.228783][ T5437] 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. [ 120.228798][ T5437] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 120.307120][ T5437] hsr_slave_0: entered promiscuous mode [ 120.307963][ T5437] hsr_slave_1: entered promiscuous mode [ 121.136391][ T5437] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 121.153461][ T5437] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 121.154343][ T5437] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 121.171621][ T5437] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 121.181950][ T5437] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 121.203380][ T5437] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 121.210146][ T5437] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 121.224297][ T5437] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 121.409279][ T5437] 8021q: adding VLAN 0 to HW filter on device bond0 [ 121.461439][ T5437] 8021q: adding VLAN 0 to HW filter on device team0 [ 121.481993][ T25] bridge0: port 1(bridge_slave_0) entered blocking state [ 121.482069][ T25] bridge0: port 1(bridge_slave_0) entered forwarding state [ 121.517674][ T126] bridge0: port 2(bridge_slave_1) entered blocking state [ 121.517811][ T126] bridge0: port 2(bridge_slave_1) entered forwarding state [ 121.518491][ T46] Bluetooth: hci0: command tx timeout [ 122.311701][ T5437] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 122.440428][ T5437] veth0_vlan: entered promiscuous mode [ 122.459015][ T5437] veth1_vlan: entered promiscuous mode [ 122.521981][ T5437] veth0_macvtap: entered promiscuous mode [ 122.538451][ T5437] veth1_macvtap: entered promiscuous mode [ 122.578664][ T5437] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 122.598836][ T5437] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 122.627125][ T25] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 122.655482][ T25] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 122.657678][ T25] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 122.657714][ T25] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 122.854310][ T25] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 122.854329][ T25] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 122.981285][ T25] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 122.981306][ T25] 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) [ 124.320358][ T70] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 124.686658][ T70] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 125.009640][ T70] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 125.052778][ T70] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 125.198349][ T70] bridge_slave_1: left allmulticast mode [ 125.198372][ T70] bridge_slave_1: left promiscuous mode [ 125.199419][ T70] bridge0: port 2(bridge_slave_1) entered disabled state [ 125.202376][ T70] bridge_slave_0: left allmulticast mode [ 125.202396][ T70] bridge_slave_0: left promiscuous mode [ 125.202976][ T70] bridge0: port 1(bridge_slave_0) entered disabled state [ 125.383971][ T70] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 125.392601][ T70] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 125.393973][ T70] bond0 (unregistering): Released all slaves [ 125.718048][ T70] hsr_slave_0: left promiscuous mode [ 125.718685][ T70] hsr_slave_1: left promiscuous mode [ 125.719970][ T70] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 125.719987][ T70] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 125.722216][ T70] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 125.722232][ T70] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 125.758945][ T70] veth1_macvtap: left promiscuous mode [ 125.758988][ T70] veth0_macvtap: left promiscuous mode [ 125.759115][ T70] veth1_vlan: left promiscuous mode [ 125.759162][ T70] veth0_vlan: left promiscuous mode [ 126.094303][ T70] team0 (unregistering): Port device team_slave_1 removed [ 126.108883][ T70] team0 (unregistering): Port device team_slave_0 removed [ 126.216633][ T4987] 8021q: adding VLAN 0 to HW filter on device eth2 [ 126.608190][ T4987] 8021q: adding VLAN 0 to HW filter on device eth3 [ 126.833096][ T4987] 8021q: adding VLAN 0 to HW filter on device eth4 [ 127.043034][ T4987] 8021q: adding VLAN 0 to HW filter on device eth5 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-build2635062213=/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='go1.26.0' GOWORK='' PKG_CONFIG='pkg-config' git status (err=) HEAD detached at 4fb8ef376b2 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=4fb8ef376b21a14e0ed92c40c92913ac567bd2a3 -X github.com/google/syzkaller/prog.gitRevisionDate=20251121-171912" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=4fb8ef376b21a14e0ed92c40c92913ac567bd2a3 -X github.com/google/syzkaller/prog.gitRevisionDate=20251121-171912" ./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=4fb8ef376b21a14e0ed92c40c92913ac567bd2a3 -X github.com/google/syzkaller/prog.gitRevisionDate=20251121-171912" -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=\"4fb8ef376b21a14e0ed92c40c92913ac567bd2a3\" /usr/bin/ld: /tmp/ccdfqrGb.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