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]:11981' (ED25519) to the list of known hosts.
2026/02/03 10:38:54 parsed 1 programs
syzkaller login: [   89.797806][ T5311] cgroup: Unknown subsys name 'net'
[   89.854096][ T5311] cgroup: Unknown subsys name 'cpuset'
[   89.869388][ T5311] cgroup: Unknown subsys name 'rlimit'
Setting up swapspace version 1, size = 127995904 bytes
[   91.712955][ T5311] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
[   92.764905][ T5311] ODEBUG: Out of memory. ODEBUG disabled
[   97.085735][  T923] cfg80211: failed to load regulatory.db
[   98.309310][   T46] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   98.316876][ T5339] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   98.320315][ T5339] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[   98.324111][ T5339] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   98.327934][ T5339] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[   99.355046][ T5336] 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.
[  106.665275][ T1040] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  106.712323][ T1040] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  107.039430][   T12] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  107.056950][   T12] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  107.423477][ T5360] syz-executor (5360) used greatest stack depth: 18040 bytes left
[  109.670819][ T5380] chnl_net:caif_netlink_parms(): no params data found
[  109.919287][ T5380] bridge0: port 1(bridge_slave_0) entered blocking state
[  109.923537][ T5380] bridge0: port 1(bridge_slave_0) entered disabled state
[  109.927254][ T5380] bridge_slave_0: entered allmulticast mode
[  109.931224][ T5380] bridge_slave_0: entered promiscuous mode
[  109.948759][ T5380] bridge0: port 2(bridge_slave_1) entered blocking state
[  109.957344][ T5380] bridge0: port 2(bridge_slave_1) entered disabled state
[  109.960624][ T5380] bridge_slave_1: entered allmulticast mode
[  109.975570][ T5380] bridge_slave_1: entered promiscuous mode
[  110.053208][ T5380] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[  110.069195][ T5380] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[  110.139128][ T5380] team0: Port device team_slave_0 added
[  110.143475][ T5380] team0: Port device team_slave_1 added
[  110.229599][ T5380] batman_adv: batadv0: Adding interface: batadv_slave_0
[  110.242276][ T5380] 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.
[  110.272068][ T5380] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[  110.306881][ T5380] batman_adv: batadv0: Adding interface: batadv_slave_1
[  110.317289][ T5380] 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.
[  110.346981][ T5380] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[  110.448263][ T5380] hsr_slave_0: entered promiscuous mode
[  110.458473][ T5380] hsr_slave_1: entered promiscuous mode
[  110.821706][ T5380] netdevsim netdevsim1 netdevsim0: renamed from eth0
[  110.845981][ T5380] netdevsim netdevsim1 netdevsim1: renamed from eth1
[  110.869770][ T5380] netdevsim netdevsim1 netdevsim2: renamed from eth2
[  110.885025][ T5380] netdevsim netdevsim1 netdevsim3: renamed from eth3
[  111.147130][ T5380] 8021q: adding VLAN 0 to HW filter on device bond0
[  111.197818][ T5380] 8021q: adding VLAN 0 to HW filter on device team0
[  111.238431][ T1049] bridge0: port 1(bridge_slave_0) entered blocking state
[  111.241936][ T1049] bridge0: port 1(bridge_slave_0) entered forwarding state
[  111.268762][ T1049] bridge0: port 2(bridge_slave_1) entered blocking state
[  111.272719][ T1049] bridge0: port 2(bridge_slave_1) entered forwarding state
[  111.834960][ T5380] 8021q: adding VLAN 0 to HW filter on device batadv0
[  111.923586][ T5380] veth0_vlan: entered promiscuous mode
[  111.960987][ T5380] veth1_vlan: entered promiscuous mode
[  112.032998][ T5380] veth0_macvtap: entered promiscuous mode
[  112.058692][ T5380] veth1_macvtap: entered promiscuous mode
[  112.108831][ T5380] batman_adv: batadv0: Interface activated: batadv_slave_0
[  112.131063][ T5380] batman_adv: batadv0: Interface activated: batadv_slave_1
[  112.221128][   T31] netdevsim netdevsim1 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[  112.241175][   T31] netdevsim netdevsim1 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[  112.245587][   T31] netdevsim netdevsim1 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[  112.269936][   T31] netdevsim netdevsim1 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[  113.329427][ T4668] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[  113.337457][ T4668] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[  113.342880][ T4668] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[  113.346821][ T4668] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[  113.351039][ T4668] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
2026/02/03 10:39:20 executed programs: 0
[  113.758015][ T5430] chnl_net:caif_netlink_parms(): no params data found
[  113.859257][ T5430] bridge0: port 1(bridge_slave_0) entered blocking state
[  113.862704][ T5430] bridge0: port 1(bridge_slave_0) entered disabled state
[  113.866067][ T5430] bridge_slave_0: entered allmulticast mode
[  113.878599][ T5430] bridge_slave_0: entered promiscuous mode
[  113.883789][ T5430] bridge0: port 2(bridge_slave_1) entered blocking state
[  113.897879][ T5430] bridge0: port 2(bridge_slave_1) entered disabled state
[  113.902072][ T5430] bridge_slave_1: entered allmulticast mode
[  113.917377][ T5430] bridge_slave_1: entered promiscuous mode
[  113.965003][ T5430] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[  113.978267][ T5430] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[  114.010231][ T5430] team0: Port device team_slave_0 added
[  114.014620][ T5430] team0: Port device team_slave_1 added
[  114.034305][ T5430] batman_adv: batadv0: Adding interface: batadv_slave_0
[  114.039452][ T5430] 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.
[  114.051567][ T5430] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[  114.059444][ T5430] batman_adv: batadv0: Adding interface: batadv_slave_1
[  114.062177][ T5430] 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.
[  114.073995][ T5430] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[  114.109578][ T5430] hsr_slave_0: entered promiscuous mode
[  114.113117][ T5430] hsr_slave_1: entered promiscuous mode
[  114.116081][ T5430] debugfs: 'hsr0' already exists in 'hsr'
[  114.119812][ T5430] Cannot create hsr debugfs directory
[  114.258518][ T5430] netdevsim netdevsim0 netdevsim0: renamed from eth0
[  114.265205][ T5430] netdevsim netdevsim0 netdevsim1: renamed from eth1
[  114.272171][ T5430] netdevsim netdevsim0 netdevsim2: renamed from eth2
[  114.282144][ T5430] netdevsim netdevsim0 netdevsim3: renamed from eth3
[  114.304098][ T5430] bridge0: port 2(bridge_slave_1) entered blocking state
[  114.307823][ T5430] bridge0: port 2(bridge_slave_1) entered forwarding state
[  114.311485][ T5430] bridge0: port 1(bridge_slave_0) entered blocking state
[  114.314864][ T5430] bridge0: port 1(bridge_slave_0) entered forwarding state
[  114.362394][ T5430] 8021q: adding VLAN 0 to HW filter on device bond0
[  114.374693][   T12] bridge0: port 1(bridge_slave_0) entered disabled state
[  114.380473][   T12] bridge0: port 2(bridge_slave_1) entered disabled state
[  114.390363][ T5430] 8021q: adding VLAN 0 to HW filter on device team0
[  114.399467][   T12] bridge0: port 1(bridge_slave_0) entered blocking state
[  114.402779][   T12] bridge0: port 1(bridge_slave_0) entered forwarding state
[  114.411140][ T1049] bridge0: port 2(bridge_slave_1) entered blocking state
[  114.414506][ T1049] bridge0: port 2(bridge_slave_1) entered forwarding state
[  114.577843][ T5430] 8021q: adding VLAN 0 to HW filter on device batadv0
[  114.619757][ T5430] veth0_vlan: entered promiscuous mode
[  114.628223][ T5430] veth1_vlan: entered promiscuous mode
[  114.654047][ T5430] veth0_macvtap: entered promiscuous mode
[  114.660733][ T5430] veth1_macvtap: entered promiscuous mode
[  114.675782][ T5430] batman_adv: batadv0: Interface activated: batadv_slave_0
[  114.688040][ T5430] batman_adv: batadv0: Interface activated: batadv_slave_1
[  114.698336][ T1049] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[  114.709280][ T1049] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[  114.721151][ T1049] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[  114.725020][ T1049] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[  114.799762][ T1143] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  114.803260][ T1143] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  114.859480][ T1143] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  114.862980][ T1143] 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)
[  115.369779][ T1143] netdevsim netdevsim1 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  115.428062][ T1143] netdevsim netdevsim1 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  115.470401][ T1143] netdevsim netdevsim1 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  115.527266][ T1143] netdevsim netdevsim1 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  115.706301][ T1143] bridge_slave_1: left allmulticast mode
[  115.711974][ T1143] bridge_slave_1: left promiscuous mode
[  115.715304][ T1143] bridge0: port 2(bridge_slave_1) entered disabled state
[  115.750190][ T1143] bridge_slave_0: left allmulticast mode
[  115.752800][ T1143] bridge_slave_0: left promiscuous mode
[  115.755577][ T1143] bridge0: port 1(bridge_slave_0) entered disabled state
[  116.328685][ T1143] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
[  116.342701][ T1143] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
[  116.361073][ T1143] bond0 (unregistering): Released all slaves
[  116.582911][ T1143] hsr_slave_0: left promiscuous mode
[  116.591065][ T1143] hsr_slave_1: left promiscuous mode
[  116.599961][ T1143] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[  116.603236][ T1143] batman_adv: batadv0: Removing interface: batadv_slave_0
[  116.624345][ T1143] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[  116.650997][ T1143] batman_adv: batadv0: Removing interface: batadv_slave_1
[  116.701463][ T1143] veth1_macvtap: left promiscuous mode
[  116.704458][ T1143] veth0_macvtap: left promiscuous mode
[  116.728005][ T1143] veth1_vlan: left promiscuous mode
[  116.730621][ T1143] veth0_vlan: left promiscuous mode
[  117.299464][ T1143] team0 (unregistering): Port device team_slave_1 removed
[  117.330560][ T1143] team0 (unregistering): Port device team_slave_0 removed
[  117.820232][ T1143] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  118.128681][ T1143] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  118.178729][ T1143] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  118.240051][ T1143] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  118.412306][ T1143] bridge_slave_1: left allmulticast mode
[  118.414897][ T1143] bridge_slave_1: left promiscuous mode
[  118.428011][ T1143] bridge0: port 2(bridge_slave_1) entered disabled state
[  118.461197][ T1143] bridge_slave_0: left allmulticast mode
[  118.463808][ T1143] bridge_slave_0: left promiscuous mode
[  118.467423][ T1143] bridge0: port 1(bridge_slave_0) entered disabled state
[  118.718772][ T1143] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
[  118.724284][ T1143] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
[  118.730222][ T1143] bond0 (unregistering): Released all slaves
[  118.948197][ T1143] hsr_slave_0: left promiscuous mode
[  118.959414][ T1143] hsr_slave_1: left promiscuous mode
[  118.968593][ T1143] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[  118.971932][ T1143] batman_adv: batadv0: Removing interface: batadv_slave_0
[  118.988598][ T1143] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[  118.991822][ T1143] batman_adv: batadv0: Removing interface: batadv_slave_1
[  119.011502][ T1143] veth1_macvtap: left promiscuous mode
[  119.014026][ T1143] veth0_macvtap: left promiscuous mode
[  119.016417][ T1143] veth1_vlan: left promiscuous mode
[  119.036884][ T1143] veth0_vlan: left promiscuous mode
[  119.380836][ T1143] team0 (unregistering): Port device team_slave_1 removed
[  119.406416][ T1143] team0 (unregistering): Port device team_slave_0 removed


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-build2097281551=/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=<nil>)
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/cc5NSMim.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