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 '10.128.1.77' (ED25519) to the list of known hosts. 2026/01/15 22:40:02 parsed 1 programs [ 91.436332][ T5770] cgroup: Unknown subsys name 'net' [ 91.619834][ T5770] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 93.500967][ T5770] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 97.511726][ T27] cfg80211: failed to load regulatory.db [ 97.626229][ T5827] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 97.635328][ T5827] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 97.647366][ T5827] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 97.657358][ T5827] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 97.666226][ T5827] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 97.674783][ T5827] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 98.756964][ T5841] chnl_net:caif_netlink_parms(): no params data found [ 98.847175][ T5841] bridge0: port 1(bridge_slave_0) entered blocking state [ 98.855754][ T5841] bridge0: port 1(bridge_slave_0) entered disabled state [ 98.863461][ T5841] bridge_slave_0: entered allmulticast mode [ 98.870994][ T5841] bridge_slave_0: entered promiscuous mode [ 98.882143][ T5841] bridge0: port 2(bridge_slave_1) entered blocking state [ 98.889558][ T5841] bridge0: port 2(bridge_slave_1) entered disabled state [ 98.896998][ T5841] bridge_slave_1: entered allmulticast mode [ 98.905003][ T5841] bridge_slave_1: entered promiscuous mode [ 98.945093][ T5841] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 98.960915][ T5841] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 98.999190][ T5841] team0: Port device team_slave_0 added [ 99.010005][ T5841] team0: Port device team_slave_1 added [ 99.050357][ T5841] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 99.057562][ T5841] 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 1560 would solve the problem. [ 99.084249][ T5841] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 99.100333][ T5841] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 99.107658][ T5841] 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 1560 would solve the problem. [ 99.134553][ T5841] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 99.182195][ T5841] hsr_slave_0: entered promiscuous mode [ 99.189573][ T5841] hsr_slave_1: entered promiscuous mode [ 99.422155][ T5841] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 99.451139][ T5841] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 99.464752][ T5841] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 99.477307][ T5841] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 99.526201][ T5841] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.534195][ T5841] bridge0: port 2(bridge_slave_1) entered forwarding state [ 99.543223][ T5841] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.550569][ T5841] bridge0: port 1(bridge_slave_0) entered forwarding state [ 99.643313][ T5841] 8021q: adding VLAN 0 to HW filter on device bond0 [ 99.665641][ T1144] bridge0: port 1(bridge_slave_0) entered disabled state [ 99.680660][ T1144] bridge0: port 2(bridge_slave_1) entered disabled state [ 99.712807][ T5841] 8021q: adding VLAN 0 to HW filter on device team0 [ 99.726230][ T1144] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.733825][ T1144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 99.754768][ T59] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.762304][ T59] bridge0: port 2(bridge_slave_1) entered forwarding state [ 100.049850][ T5841] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 100.106527][ T5841] veth0_vlan: entered promiscuous mode [ 100.126155][ T5841] veth1_vlan: entered promiscuous mode [ 100.165665][ T5841] veth0_macvtap: entered promiscuous mode [ 100.176274][ T5841] veth1_macvtap: entered promiscuous mode [ 100.199399][ T5841] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 100.215114][ T5841] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 100.232797][ T5841] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 100.242511][ T5841] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 100.252180][ T5841] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 100.261429][ T5841] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 100.433056][ T2921] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 101.210599][ T1144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 101.220090][ T1144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 101.256000][ T59] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 101.266087][ T59] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 2026/01/15 22:40:15 executed programs: 0 [ 101.909745][ T5827] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 101.921565][ T5827] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 101.937074][ T5827] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 101.947703][ T5827] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 101.957060][ T5827] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 101.965182][ T5827] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 102.162982][ T5881] chnl_net:caif_netlink_parms(): no params data found [ 102.252890][ T5881] bridge0: port 1(bridge_slave_0) entered blocking state [ 102.260298][ T5881] bridge0: port 1(bridge_slave_0) entered disabled state [ 102.267824][ T5881] bridge_slave_0: entered allmulticast mode [ 102.275389][ T5881] bridge_slave_0: entered promiscuous mode [ 102.284877][ T5881] bridge0: port 2(bridge_slave_1) entered blocking state [ 102.292267][ T5881] bridge0: port 2(bridge_slave_1) entered disabled state [ 102.300404][ T5881] bridge_slave_1: entered allmulticast mode [ 102.307617][ T5881] bridge_slave_1: entered promiscuous mode [ 102.347300][ T5881] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 102.362400][ T5881] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 102.401026][ T5881] team0: Port device team_slave_0 added [ 102.411474][ T5881] team0: Port device team_slave_1 added [ 102.445677][ T5881] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 102.453030][ T5881] 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 1560 would solve the problem. [ 102.497533][ T5881] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 102.512163][ T5881] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 102.519564][ T5881] 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 1560 would solve the problem. [ 102.546481][ T5881] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 102.605893][ T5881] hsr_slave_0: entered promiscuous mode [ 102.613309][ T5881] hsr_slave_1: entered promiscuous mode [ 102.621064][ T5881] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 102.630864][ T5881] Cannot create hsr debugfs directory [ 102.931651][ T2921] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 103.989285][ T5827] Bluetooth: hci0: command tx timeout [ 105.272412][ T2921] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 105.366251][ T2921] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 106.068945][ T5827] Bluetooth: hci0: command tx timeout [ 106.281829][ T5881] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 106.320423][ T5881] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 106.336726][ T5881] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 106.350612][ T5881] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 106.387627][ T2921] hsr_slave_0: left promiscuous mode [ 106.401882][ T2921] hsr_slave_1: left promiscuous mode [ 106.409629][ T2921] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 106.417492][ T2921] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 106.429884][ T2921] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 106.437632][ T2921] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 106.453690][ T2921] bridge_slave_1: left allmulticast mode [ 106.459750][ T2921] bridge_slave_1: left promiscuous mode [ 106.466972][ T2921] bridge0: port 2(bridge_slave_1) entered disabled state [ 106.482782][ T2921] bridge_slave_0: left allmulticast mode [ 106.490565][ T2921] bridge_slave_0: left promiscuous mode [ 106.496735][ T2921] bridge0: port 1(bridge_slave_0) entered disabled state [ 106.531341][ T2921] veth1_macvtap: left promiscuous mode [ 106.537667][ T2921] veth0_macvtap: left promiscuous mode [ 106.543986][ T2921] veth1_vlan: left promiscuous mode [ 106.550710][ T2921] veth0_vlan: left promiscuous mode [ 107.110266][ T2921] team0 (unregistering): Port device team_slave_1 removed [ 107.152634][ T2921] team0 (unregistering): Port device team_slave_0 removed [ 107.189706][ T2921] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 107.229578][ T2921] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 107.629929][ T2921] bond0 (unregistering): Released all slaves [ 107.813743][ T5881] 8021q: adding VLAN 0 to HW filter on device bond0 [ 107.851614][ T5881] 8021q: adding VLAN 0 to HW filter on device team0 [ 107.884000][ T1144] bridge0: port 1(bridge_slave_0) entered blocking state [ 107.891501][ T1144] bridge0: port 1(bridge_slave_0) entered forwarding state [ 107.922304][ T1144] bridge0: port 2(bridge_slave_1) entered blocking state [ 107.929569][ T1144] bridge0: port 2(bridge_slave_1) entered forwarding state [ 108.148382][ T5827] Bluetooth: hci0: command tx timeout [ 108.297700][ T5881] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 108.343675][ T5881] veth0_vlan: entered promiscuous mode [ 108.371852][ T5881] veth1_vlan: entered promiscuous mode [ 108.429716][ T5881] veth0_macvtap: entered promiscuous mode [ 108.453549][ T5881] veth1_macvtap: entered promiscuous mode [ 108.473209][ T5881] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 108.489253][ T5881] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 108.521555][ T5881] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.531771][ T5881] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.541287][ T5881] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.551524][ T5881] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 108.661207][ T1144] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.675216][ T1144] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 108.723817][ T1144] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 108.732667][ T1144] 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) 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-build3277439078=/tmp/go-build -gno-record-gcc-switches' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod' GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs-2/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 d6526ea3e6 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=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" ./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=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" -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=\"d6526ea3e6ad9081c902859bbb80f9f840377cb4\" /usr/bin/ld: /tmp/ccGhXdOs.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