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) [ 97.333016][ T9] cfg80211: failed to load regulatory.db Warning: Permanently added '[localhost]:9133' (ED25519) to the list of known hosts. 2026/04/06 16:27:22 parsed 1 programs [ 105.605478][ T5318] cgroup: Unknown subsys name 'net' [ 105.660800][ T5318] cgroup: Unknown subsys name 'cpuset' [ 105.667280][ T5318] cgroup: Unknown subsys name 'rlimit' [ 143.408141][ T1314] ieee802154 phy0 wpan0: encryption failed: -22 [ 143.411150][ T1314] ieee802154 phy1 wpan1: encryption failed: -22 [ 155.585061][ T1012] ata1.00: exception Emask 0x0 SAct 0x200000 SErr 0x0 action 0x6 frozen [ 155.588701][ T1012] ata1.00: failed command: WRITE FPDMA QUEUED [ 155.591312][ T1012] ata1.00: cmd 61/00:a8:ee:5e:04/20:00:00:00:00/40 tag 21 ncq dma 4194304 ou [ 155.591312][ T1012] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 155.601117][ T1012] ata1.00: status: { DRDY } [ 155.603170][ T1012] ata1: hard resetting link [ 155.928415][ T1012] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 155.933337][ T1012] ata1.00: configured for UDMA/100 [ 155.936086][ T1012] ata1: EH complete Setting up swapspace version 1, size = 127995904 bytes [ 157.619134][ T5318] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 162.673934][ T5347] 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. [ 164.307583][ T5360] chnl_net:caif_netlink_parms(): no params data found [ 164.498665][ T5360] bridge0: port 1(bridge_slave_0) entered blocking state [ 164.513773][ T5360] bridge0: port 1(bridge_slave_0) entered disabled state [ 164.525925][ T5360] bridge_slave_0: entered allmulticast mode [ 164.531396][ T5360] bridge_slave_0: entered promiscuous mode [ 164.548604][ T5360] bridge0: port 2(bridge_slave_1) entered blocking state [ 164.551782][ T5360] bridge0: port 2(bridge_slave_1) entered disabled state [ 164.565103][ T5360] bridge_slave_1: entered allmulticast mode [ 164.568713][ T5360] bridge_slave_1: entered promiscuous mode [ 164.629264][ T5360] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 164.637069][ T5360] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 164.663057][ T5360] team0: Port device team_slave_0 added [ 164.669013][ T5360] team0: Port device team_slave_1 added [ 164.693384][ T5360] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 164.696614][ T5360] 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. [ 164.708920][ T5360] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 164.717453][ T5360] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 164.720855][ T5360] 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. [ 164.734179][ T5360] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 164.778646][ T5360] hsr_slave_0: entered promiscuous mode [ 164.782487][ T5360] hsr_slave_1: entered promiscuous mode [ 164.955359][ T5360] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 164.967145][ T5360] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 164.974121][ T5360] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 164.982665][ T5360] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 165.019253][ T5360] bridge0: port 2(bridge_slave_1) entered blocking state [ 165.023187][ T5360] bridge0: port 2(bridge_slave_1) entered forwarding state [ 165.027522][ T5360] bridge0: port 1(bridge_slave_0) entered blocking state [ 165.030701][ T5360] bridge0: port 1(bridge_slave_0) entered forwarding state [ 165.092372][ T5360] 8021q: adding VLAN 0 to HW filter on device bond0 [ 165.110018][ T42] bridge0: port 1(bridge_slave_0) entered disabled state [ 165.117241][ T42] bridge0: port 2(bridge_slave_1) entered disabled state [ 165.131299][ T5360] 8021q: adding VLAN 0 to HW filter on device team0 [ 165.143669][ T42] bridge0: port 1(bridge_slave_0) entered blocking state [ 165.147694][ T42] bridge0: port 1(bridge_slave_0) entered forwarding state [ 165.160157][ T42] bridge0: port 2(bridge_slave_1) entered blocking state [ 165.163816][ T42] bridge0: port 2(bridge_slave_1) entered forwarding state [ 165.349828][ T5360] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 165.390068][ T5360] veth0_vlan: entered promiscuous mode [ 165.401847][ T5360] veth1_vlan: entered promiscuous mode [ 165.434295][ T5360] veth0_macvtap: entered promiscuous mode [ 165.442636][ T5360] veth1_macvtap: entered promiscuous mode [ 165.461828][ T5360] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 165.473278][ T5360] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 165.485795][ T1084] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 165.496960][ T1084] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 165.500719][ T1084] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 165.504427][ T1084] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 165.759275][ T42] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 165.798069][ T45] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 165.802457][ T45] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 165.811350][ T45] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 165.815965][ T45] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 165.819779][ T45] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 165.889335][ T42] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 165.981853][ T42] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 166.051742][ T42] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 167.363178][ T30] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 167.369748][ T30] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 167.407493][ T1084] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 167.411801][ T1084] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 168.301501][ T42] bridge_slave_1: left allmulticast mode [ 168.304296][ T42] bridge_slave_1: left promiscuous mode [ 168.319423][ T42] bridge0: port 2(bridge_slave_1) entered disabled state [ 168.347600][ T42] bridge_slave_0: left allmulticast mode [ 168.350070][ T42] bridge_slave_0: left promiscuous mode [ 168.352420][ T42] bridge0: port 1(bridge_slave_0) entered disabled state [ 168.815073][ T42] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 168.846269][ T42] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 168.876860][ T42] bond0 (unregistering): Released all slaves [ 169.098919][ T42] hsr_slave_0: left promiscuous mode [ 169.102388][ T42] hsr_slave_1: left promiscuous mode [ 169.125864][ T42] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 169.135140][ T42] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 169.149868][ T42] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 169.154084][ T42] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 169.236337][ T42] veth1_macvtap: left promiscuous mode [ 169.238964][ T42] veth0_macvtap: left promiscuous mode [ 169.241512][ T42] veth1_vlan: left promiscuous mode [ 169.244080][ T42] veth0_vlan: left promiscuous mode [ 169.980803][ T42] team0 (unregistering): Port device team_slave_1 removed [ 170.001547][ T42] team0 (unregistering): Port device team_slave_0 removed 2026/04/06 16:28:33 executed programs: 0 [ 173.441465][ T4670] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 173.450061][ T4670] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 173.456995][ T4670] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 173.460524][ T4670] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 173.463806][ T4670] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 173.647054][ T5471] chnl_net:caif_netlink_parms(): no params data found [ 173.724002][ T5471] bridge0: port 1(bridge_slave_0) entered blocking state [ 173.727117][ T5471] bridge0: port 1(bridge_slave_0) entered disabled state [ 173.730352][ T5471] bridge_slave_0: entered allmulticast mode [ 173.734575][ T5471] bridge_slave_0: entered promiscuous mode [ 173.740063][ T5471] bridge0: port 2(bridge_slave_1) entered blocking state [ 173.746593][ T5471] bridge0: port 2(bridge_slave_1) entered disabled state [ 173.750263][ T5471] bridge_slave_1: entered allmulticast mode [ 173.756104][ T5471] bridge_slave_1: entered promiscuous mode [ 173.781144][ T5471] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 173.789752][ T5471] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 173.811592][ T5471] team0: Port device team_slave_0 added [ 173.816263][ T5471] team0: Port device team_slave_1 added [ 173.841975][ T5471] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 173.845347][ T5471] 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. [ 173.858938][ T5471] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 173.865445][ T5471] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 173.869506][ T5471] 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. [ 173.883443][ T5471] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 173.923275][ T5471] hsr_slave_0: entered promiscuous mode [ 173.927468][ T5471] hsr_slave_1: entered promiscuous mode [ 174.385604][ T5471] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 174.406020][ T5471] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 174.413263][ T5471] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 174.426313][ T5471] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 174.495080][ T5471] bridge0: port 2(bridge_slave_1) entered blocking state [ 174.498368][ T5471] bridge0: port 2(bridge_slave_1) entered forwarding state [ 174.502053][ T5471] bridge0: port 1(bridge_slave_0) entered blocking state [ 174.505452][ T5471] bridge0: port 1(bridge_slave_0) entered forwarding state [ 174.614136][ T5471] 8021q: adding VLAN 0 to HW filter on device bond0 [ 174.643212][ T30] bridge0: port 1(bridge_slave_0) entered disabled state [ 174.649288][ T30] bridge0: port 2(bridge_slave_1) entered disabled state [ 174.661870][ T5471] 8021q: adding VLAN 0 to HW filter on device team0 [ 174.706764][ T30] bridge0: port 1(bridge_slave_0) entered blocking state [ 174.710647][ T30] bridge0: port 1(bridge_slave_0) entered forwarding state [ 174.731287][ T30] bridge0: port 2(bridge_slave_1) entered blocking state [ 174.735149][ T30] bridge0: port 2(bridge_slave_1) entered forwarding state [ 175.096953][ T5471] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 175.174036][ T5471] veth0_vlan: entered promiscuous mode [ 175.197067][ T5471] veth1_vlan: entered promiscuous mode [ 175.258604][ T5471] veth0_macvtap: entered promiscuous mode [ 175.279286][ T5471] veth1_macvtap: entered promiscuous mode [ 175.319602][ T5471] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 175.338081][ T5471] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 175.358245][ T42] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 175.361858][ T42] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 175.382405][ T42] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 175.417943][ T42] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 175.486454][ T4670] Bluetooth: hci0: command tx timeout [ 175.509162][ T30] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 175.513593][ T30] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 175.576296][ T1084] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 175.579631][ T1084] 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) [ 177.058417][ T42] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 178.209793][ T42] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 178.246355][ T42] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 178.281699][ T42] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 178.417041][ T42] bridge_slave_1: left allmulticast mode [ 178.419666][ T42] bridge_slave_1: left promiscuous mode [ 178.423228][ T42] bridge0: port 2(bridge_slave_1) entered disabled state [ 178.433386][ T42] bridge_slave_0: left allmulticast mode [ 178.437006][ T42] bridge_slave_0: left promiscuous mode [ 178.439485][ T42] bridge0: port 1(bridge_slave_0) entered disabled state [ 178.703766][ T42] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 178.719475][ T42] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 178.726239][ T42] bond0 (unregistering): Released all slaves [ 178.929485][ T42] hsr_slave_0: left promiscuous mode [ 178.932168][ T42] hsr_slave_1: left promiscuous mode [ 178.945419][ T42] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 178.949546][ T42] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 178.966024][ T42] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 178.970017][ T42] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 178.987573][ T42] veth1_macvtap: left promiscuous mode [ 178.990249][ T42] veth0_macvtap: left promiscuous mode [ 178.993288][ T42] veth1_vlan: left promiscuous mode [ 179.019563][ T42] veth0_vlan: left promiscuous mode [ 179.334124][ T42] team0 (unregistering): Port device team_slave_1 removed [ 179.349445][ T42] team0 (unregistering): Port device team_slave_0 removed 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-build3873908327=/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 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/ccSfN5Kh.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