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: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000)
[   94.220435][ T1010] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1
[   94.223986][ T1010] ata1: failed to read log page 10h (errno=-5)
[   94.226767][ T1010] ata1.00: exception Emask 0x1 SAct 0x300 SErr 0x0 action 0x0
[   94.239593][ T1010] ata1.00: irq_stat 0x41000000
[   94.241807][ T1010] ata1.00: failed command: WRITE FPDMA QUEUED
[   94.244683][ T1010] ata1.00: cmd 61/00:40:36:21:05/20:00:00:00:00/40 tag 8 ncq dma 4194304 ou
[   94.244683][ T1010]          res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[   94.265739][ T1010] ata1.00: status: { DRDY }
[   94.267925][ T1010] ata1.00: failed command: WRITE FPDMA QUEUED
[   94.281123][ T1010] ata1.00: cmd 61/00:48:36:41:05/20:00:00:00:00/40 tag 9 ncq dma 4194304 ou
[   94.281123][ T1010]          res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error)
[   94.325059][ T1010] ata1.00: status: { DRDY }
[   94.339927][ T1010] ata1.00: configured for UDMA/100
[   94.349526][ T1010] ata1: EH complete
Warning: Permanently added '[localhost]:57216' (ED25519) to the list of known hosts.
[   97.274065][  T788] cfg80211: failed to load regulatory.db
2026/04/14 07:50:37 parsed 1 programs
[  100.266278][ T5311] cgroup: Unknown subsys name 'net'
[  100.313358][ T5311] cgroup: Unknown subsys name 'cpuset'
[  100.335775][ T5311] cgroup: Unknown subsys name 'rlimit'
Setting up swapspace version 1, size = 127995904 bytes
[  102.342468][ T5311] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
[  108.710713][ T5329] 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.
[  110.344387][ T5339] chnl_net:caif_netlink_parms(): no params data found
[  110.513749][ T5339] bridge0: port 1(bridge_slave_0) entered blocking state
[  110.518751][ T5339] bridge0: port 1(bridge_slave_0) entered disabled state
[  110.522493][ T5339] bridge_slave_0: entered allmulticast mode
[  110.539690][ T5339] bridge_slave_0: entered promiscuous mode
[  110.547108][ T5339] bridge0: port 2(bridge_slave_1) entered blocking state
[  110.551599][ T5339] bridge0: port 2(bridge_slave_1) entered disabled state
[  110.555096][ T5339] bridge_slave_1: entered allmulticast mode
[  110.560251][ T5339] bridge_slave_1: entered promiscuous mode
[  110.590410][ T5339] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[  110.598716][ T5339] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[  110.630415][ T5339] team0: Port device team_slave_0 added
[  110.644900][ T5339] team0: Port device team_slave_1 added
[  110.675224][ T5339] batman_adv: batadv0: Adding interface: batadv_slave_0
[  110.678445][ T5339] 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.
[  110.691069][ T5339] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[  110.698467][ T5339] batman_adv: batadv0: Adding interface: batadv_slave_1
[  110.702630][ T5339] 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.
[  110.716047][ T5339] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[  110.764209][ T5339] hsr_slave_0: entered promiscuous mode
[  110.767909][ T5339] hsr_slave_1: entered promiscuous mode
[  110.970349][ T5339] netdevsim netdevsim0 netdevsim0: renamed from eth0
[  110.991490][ T5339] netdevsim netdevsim0 netdevsim1: renamed from eth1
[  111.003668][ T5339] netdevsim netdevsim0 netdevsim2: renamed from eth2
[  111.021024][ T5339] netdevsim netdevsim0 netdevsim3: renamed from eth3
[  111.093193][ T5339] bridge0: port 2(bridge_slave_1) entered blocking state
[  111.097043][ T5339] bridge0: port 2(bridge_slave_1) entered forwarding state
[  111.101372][ T5339] bridge0: port 1(bridge_slave_0) entered blocking state
[  111.104819][ T5339] bridge0: port 1(bridge_slave_0) entered forwarding state
[  111.232488][ T5339] 8021q: adding VLAN 0 to HW filter on device bond0
[  111.266590][ T1089] bridge0: port 1(bridge_slave_0) entered disabled state
[  111.271630][ T1089] bridge0: port 2(bridge_slave_1) entered disabled state
[  111.310361][ T5339] 8021q: adding VLAN 0 to HW filter on device team0
[  111.323629][ T1089] bridge0: port 1(bridge_slave_0) entered blocking state
[  111.327553][ T1089] bridge0: port 1(bridge_slave_0) entered forwarding state
[  111.355412][ T1089] bridge0: port 2(bridge_slave_1) entered blocking state
[  111.359809][ T1089] bridge0: port 2(bridge_slave_1) entered forwarding state
[  111.775277][ T5339] 8021q: adding VLAN 0 to HW filter on device batadv0
[  111.871370][ T5339] veth0_vlan: entered promiscuous mode
[  111.895211][ T5339] veth1_vlan: entered promiscuous mode
[  111.961412][ T5339] veth0_macvtap: entered promiscuous mode
[  111.981724][ T5339] veth1_macvtap: entered promiscuous mode
[  112.008165][ T5339] batman_adv: batadv0: Interface activated: batadv_slave_0
[  112.026981][ T5339] batman_adv: batadv0: Interface activated: batadv_slave_1
[  112.062957][ T3086] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[  112.068637][ T3086] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[  112.081926][ T3086] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[  112.086332][ T3086] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[  112.322910][ T3086] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  112.362715][ T3086] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  112.407583][ T3086] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  113.187414][ T3086] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  113.891319][ T1132] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  113.896302][ T1132] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  113.971297][ T1089] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  113.976321][ T1089] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  114.160927][ T5388] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[  114.165909][ T5388] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[  114.170938][ T5388] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[  114.176011][ T5388] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[  114.180361][ T5388] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[  114.879617][ T3086] bridge_slave_1: left allmulticast mode
[  114.883068][ T3086] bridge_slave_1: left promiscuous mode
[  114.918245][ T3086] bridge0: port 2(bridge_slave_1) entered disabled state
[  115.002175][ T3086] bridge_slave_0: left allmulticast mode
[  115.004762][ T3086] bridge_slave_0: left promiscuous mode
[  115.007442][ T3086] bridge0: port 1(bridge_slave_0) entered disabled state
[  115.490526][ T3086] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
[  115.513678][ T3086] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
[  115.524773][ T3086] bond0 (unregistering): Released all slaves
[  115.672584][ T3086] hsr_slave_0: left promiscuous mode
[  115.685677][ T3086] hsr_slave_1: left promiscuous mode
[  115.710451][ T3086] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[  115.714585][ T3086] batman_adv: batadv0: Removing interface: batadv_slave_0
[  115.769412][ T3086] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[  115.791149][ T3086] batman_adv: batadv0: Removing interface: batadv_slave_1
[  115.867993][ T3086] veth1_macvtap: left promiscuous mode
[  115.877427][ T3086] veth0_macvtap: left promiscuous mode
[  115.897825][ T3086] veth1_vlan: left promiscuous mode
[  115.909947][ T3086] veth0_vlan: left promiscuous mode
[  116.429849][ T3086] team0 (unregistering): Port device team_slave_1 removed
[  116.445778][ T3086] team0 (unregistering): Port device team_slave_0 removed
2026/04/14 07:51:00 executed programs: 0
[  121.062711][ T4667] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[  121.068024][ T4667] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[  121.074698][ T4667] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[  121.080708][ T4667] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[  121.085603][ T4667] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[  121.351226][ T5455] chnl_net:caif_netlink_parms(): no params data found
[  121.421380][ T5455] bridge0: port 1(bridge_slave_0) entered blocking state
[  121.425301][ T5455] bridge0: port 1(bridge_slave_0) entered disabled state
[  121.430646][ T5455] bridge_slave_0: entered allmulticast mode
[  121.435946][ T5455] bridge_slave_0: entered promiscuous mode
[  121.443086][ T5455] bridge0: port 2(bridge_slave_1) entered blocking state
[  121.446351][ T5455] bridge0: port 2(bridge_slave_1) entered disabled state
[  121.450091][ T5455] bridge_slave_1: entered allmulticast mode
[  121.454325][ T5455] bridge_slave_1: entered promiscuous mode
[  121.490744][ T5455] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[  121.497998][ T5455] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[  121.534629][ T5455] team0: Port device team_slave_0 added
[  121.540390][ T5455] team0: Port device team_slave_1 added
[  121.562784][ T5455] batman_adv: batadv0: Adding interface: batadv_slave_0
[  121.565626][ T5455] 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.
[  121.578711][ T5455] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[  121.585901][ T5455] batman_adv: batadv0: Adding interface: batadv_slave_1
[  121.589847][ T5455] 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.
[  121.602502][ T5455] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[  121.681438][ T5455] hsr_slave_0: entered promiscuous mode
[  121.685282][ T5455] hsr_slave_1: entered promiscuous mode
[  122.353878][ T5455] netdevsim netdevsim0 netdevsim0: renamed from eth0
[  122.377740][ T5455] netdevsim netdevsim0 netdevsim1: renamed from eth1
[  122.425051][ T5455] netdevsim netdevsim0 netdevsim2: renamed from eth2
[  122.451757][ T5455] netdevsim netdevsim0 netdevsim3: renamed from eth3
[  122.683370][ T5455] 8021q: adding VLAN 0 to HW filter on device bond0
[  122.762377][ T5455] 8021q: adding VLAN 0 to HW filter on device team0
[  122.792659][   T12] bridge0: port 1(bridge_slave_0) entered blocking state
[  122.796662][   T12] bridge0: port 1(bridge_slave_0) entered forwarding state
[  122.811756][   T12] bridge0: port 2(bridge_slave_1) entered blocking state
[  122.815698][   T12] bridge0: port 2(bridge_slave_1) entered forwarding state
[  123.101785][ T5388] Bluetooth: hci0: command tx timeout
[  123.284393][ T5455] 8021q: adding VLAN 0 to HW filter on device batadv0
[  123.360819][ T5455] veth0_vlan: entered promiscuous mode
[  123.387853][ T5455] veth1_vlan: entered promiscuous mode
[  123.450421][ T5455] veth0_macvtap: entered promiscuous mode
[  123.465330][ T5455] veth1_macvtap: entered promiscuous mode
[  123.508992][ T5455] batman_adv: batadv0: Interface activated: batadv_slave_0
[  123.531405][ T5455] batman_adv: batadv0: Interface activated: batadv_slave_1
[  123.550838][ T3086] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[  123.573881][ T3086] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[  123.597355][ T3086] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[  123.641370][ T3086] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[  123.756817][ T1132] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  123.779540][ T1132] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[  123.830328][ T1132] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[  123.833927][ T1132] 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)
[  125.293229][ T3086] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  126.113626][ T3086] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  126.230512][ T3086] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  126.275933][ T3086] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[  126.420548][ T3086] bridge_slave_1: left allmulticast mode
[  126.423204][ T3086] bridge_slave_1: left promiscuous mode
[  126.425923][ T3086] bridge0: port 2(bridge_slave_1) entered disabled state
[  126.453078][ T3086] bridge_slave_0: left allmulticast mode
[  126.455666][ T3086] bridge_slave_0: left promiscuous mode
[  126.469446][ T3086] bridge0: port 1(bridge_slave_0) entered disabled state
[  126.725592][ T3086] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
[  126.741200][ T3086] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
[  126.752660][ T3086] bond0 (unregistering): Released all slaves
[  126.972523][ T3086] hsr_slave_0: left promiscuous mode
[  126.979583][ T3086] hsr_slave_1: left promiscuous mode
[  126.990553][ T3086] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[  126.994390][ T3086] batman_adv: batadv0: Removing interface: batadv_slave_0
[  127.010078][ T3086] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[  127.013672][ T3086] batman_adv: batadv0: Removing interface: batadv_slave_1
[  127.029882][ T3086] veth1_macvtap: left promiscuous mode
[  127.033509][ T3086] veth0_macvtap: left promiscuous mode
[  127.036695][ T3086] veth1_vlan: left promiscuous mode
[  127.069989][ T3086] veth0_vlan: left promiscuous mode
[  127.408611][ T3086] team0 (unregistering): Port device team_slave_1 removed
[  127.423588][ T3086] 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-build3099665786=/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=<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/ccKBSHOd.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