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 '10.128.1.200' (ED25519) to the list of known hosts.
2025/12/18 17:43:08 parsed 1 programs
syzkaller login: [   77.206474][ T5812] cgroup: Unknown subsys name 'net'
[   77.339204][ T5812] cgroup: Unknown subsys name 'cpuset'
[   77.348689][ T5812] cgroup: Unknown subsys name 'rlimit'
[   77.354552][ T5812] cgroup: Unknown subsys name 'memory'
Setting up swapspace version 1, size = 127995904 bytes
[   78.721173][ T5812] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
[   82.567905][ T2899] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   82.593549][ T2899] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   83.168098][ T3428] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   83.201441][ T3428] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   83.787802][ T5129] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   83.798204][ T5129] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   83.812821][ T5129] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[   83.821892][ T5129] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   83.837057][ T5129] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[   84.492245][ T5867] chnl_net:caif_netlink_parms(): no params data found
[   84.837926][ T5867] bridge0: port 1(bridge_slave_0) entered blocking state
[   84.845244][ T5867] bridge0: port 1(bridge_slave_0) entered disabled state
[   84.873967][ T5867] bridge_slave_0: entered allmulticast mode
[   84.893842][ T5867] bridge_slave_0: entered promiscuous mode
[   84.917018][ T5867] bridge0: port 2(bridge_slave_1) entered blocking state
[   84.924974][ T5867] bridge0: port 2(bridge_slave_1) entered disabled state
[   84.945286][ T5867] bridge_slave_1: entered allmulticast mode
[   84.955192][ T5867] bridge_slave_1: entered promiscuous mode
[   85.040790][ T5867] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[   85.071188][ T5867] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[   85.120934][ T5867] team0: Port device team_slave_0 added
[   85.131596][ T5867] team0: Port device team_slave_1 added
[   85.157004][ T5867] batman_adv: batadv0: Adding interface: batadv_slave_0
[   85.164394][ T5867] 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.
[   85.197805][ T5867] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[   85.256302][ T5867] batman_adv: batadv0: Adding interface: batadv_slave_1
[   85.263804][ T5867] 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.
[   85.291968][ T5867] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[   85.360251][ T5867] hsr_slave_0: entered promiscuous mode
[   85.368079][ T5867] hsr_slave_1: entered promiscuous mode
[   85.532240][ T5867] netdevsim netdevsim4 netdevsim0: renamed from eth0
[   85.545773][ T5867] netdevsim netdevsim4 netdevsim1: renamed from eth1
[   85.556902][ T5867] netdevsim netdevsim4 netdevsim2: renamed from eth2
[   85.569118][ T5867] netdevsim netdevsim4 netdevsim3: renamed from eth3
[   85.652317][ T5867] 8021q: adding VLAN 0 to HW filter on device bond0
[   85.673810][ T5867] 8021q: adding VLAN 0 to HW filter on device team0
[   85.689415][ T2054] bridge0: port 1(bridge_slave_0) entered blocking state
[   85.697500][ T2054] bridge0: port 1(bridge_slave_0) entered forwarding state
[   85.713327][ T5085] bridge0: port 2(bridge_slave_1) entered blocking state
[   85.721170][ T5085] bridge0: port 2(bridge_slave_1) entered forwarding state
[   85.762845][ T5867] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[   85.889586][ T5867] 8021q: adding VLAN 0 to HW filter on device batadv0
[   85.916690][   T53] Bluetooth: hci0: command tx timeout
[   86.070715][ T5867] veth0_vlan: entered promiscuous mode
[   86.082292][ T5867] veth1_vlan: entered promiscuous mode
[   86.108948][ T5867] veth0_macvtap: entered promiscuous mode
[   86.120723][ T5867] veth1_macvtap: entered promiscuous mode
[   86.139060][ T5867] batman_adv: batadv0: Interface activated: batadv_slave_0
[   86.152897][ T5867] batman_adv: batadv0: Interface activated: batadv_slave_1
[   86.171823][ T3428] netdevsim netdevsim4 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[   86.182699][ T3428] netdevsim netdevsim4 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[   86.194687][ T3428] netdevsim netdevsim4 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[   86.209121][ T3428] netdevsim netdevsim4 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
2025/12/18 17:43:19 executed programs: 0
[   86.361304][ T5129] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1
[   86.371782][ T5129] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9
[   86.381971][ T5129] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9
[   86.391510][ T5129] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4
[   86.401130][ T5129] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2
[   86.609019][ T5931] chnl_net:caif_netlink_parms(): no params data found
[   86.683044][ T5931] bridge0: port 1(bridge_slave_0) entered blocking state
[   86.691190][ T5931] bridge0: port 1(bridge_slave_0) entered disabled state
[   86.699248][ T5931] bridge_slave_0: entered allmulticast mode
[   86.707695][ T5931] bridge_slave_0: entered promiscuous mode
[   86.716570][ T5931] bridge0: port 2(bridge_slave_1) entered blocking state
[   86.724992][ T5931] bridge0: port 2(bridge_slave_1) entered disabled state
[   86.733512][ T5931] bridge_slave_1: entered allmulticast mode
[   86.740915][ T5931] bridge_slave_1: entered promiscuous mode
[   86.770166][ T5931] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[   86.781670][ T5931] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[   86.819797][ T5931] team0: Port device team_slave_0 added
[   86.829112][ T5931] team0: Port device team_slave_1 added
[   86.857669][ T5931] batman_adv: batadv0: Adding interface: batadv_slave_0
[   86.865170][ T5931] 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.
[   86.893655][ T5931] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[   86.908530][ T5931] batman_adv: batadv0: Adding interface: batadv_slave_1
[   86.916017][ T5931] 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.
[   86.944402][ T5931] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[   86.967351][    T9] cfg80211: failed to load regulatory.db
[   87.009380][ T5931] hsr_slave_0: entered promiscuous mode
[   87.016355][ T5931] hsr_slave_1: entered promiscuous mode
[   87.022863][ T5931] debugfs: 'hsr0' already exists in 'hsr'
[   87.030686][ T5931] Cannot create hsr debugfs directory
[   87.168149][ T5931] netdevsim netdevsim0 netdevsim0: renamed from eth0
[   87.180224][ T5931] netdevsim netdevsim0 netdevsim1: renamed from eth1
[   87.191846][ T5931] netdevsim netdevsim0 netdevsim2: renamed from eth2
[   87.204355][ T5931] netdevsim netdevsim0 netdevsim3: renamed from eth3
[   87.240014][ T5931] bridge0: port 2(bridge_slave_1) entered blocking state
[   87.247679][ T5931] bridge0: port 2(bridge_slave_1) entered forwarding state
[   87.256161][ T5931] bridge0: port 1(bridge_slave_0) entered blocking state
[   87.264384][ T5931] bridge0: port 1(bridge_slave_0) entered forwarding state
[   87.326855][ T5931] 8021q: adding VLAN 0 to HW filter on device bond0
[   87.344692][ T5085] bridge0: port 1(bridge_slave_0) entered disabled state
[   87.354314][ T5085] bridge0: port 2(bridge_slave_1) entered disabled state
[   87.372197][ T5931] 8021q: adding VLAN 0 to HW filter on device team0
[   87.384796][ T2054] bridge0: port 1(bridge_slave_0) entered blocking state
[   87.393021][ T2054] bridge0: port 1(bridge_slave_0) entered forwarding state
[   87.407994][ T5085] bridge0: port 2(bridge_slave_1) entered blocking state
[   87.415750][ T5085] bridge0: port 2(bridge_slave_1) entered forwarding state
[   87.582637][ T5931] 8021q: adding VLAN 0 to HW filter on device batadv0
[   87.629792][ T5931] veth0_vlan: entered promiscuous mode
[   87.641087][ T5931] veth1_vlan: entered promiscuous mode
[   87.669671][ T5931] veth0_macvtap: entered promiscuous mode
[   87.680621][ T5931] veth1_macvtap: entered promiscuous mode
[   87.701205][ T5931] batman_adv: batadv0: Interface activated: batadv_slave_0
[   87.718330][ T5931] batman_adv: batadv0: Interface activated: batadv_slave_1
[   87.733931][ T3428] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[   87.744302][ T3428] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[   87.755154][ T3428] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[   87.765284][ T3428] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[   87.823702][ T5085] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   87.835356][ T5085] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   87.868650][ T5085] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   87.879210][ T5085] 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)
[   88.025962][   T53] Bluetooth: hci0: command tx timeout
[   88.437768][ T2899] netdevsim netdevsim4 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0


syzkaller build log:
go env (err=<nil>)
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-build656347617=/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=<nil>)
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/ccnOkxJz.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