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) [ 92.541227][ T1027] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 92.544317][ T1027] ata1: failed to read log page 10h (errno=-5) [ 92.547071][ T1027] ata1.00: NCQ disabled due to excessive errors [ 92.549734][ T1027] ata1.00: exception Emask 0x1 SAct 0x70 SErr 0x0 action 0x0 [ 92.568151][ T1027] ata1.00: irq_stat 0x41000000 [ 92.574306][ T1027] ata1.00: failed command: WRITE FPDMA QUEUED [ 92.584367][ T1027] ata1.00: cmd 61/00:20:36:21:05/20:00:00:00:00/40 tag 4 ncq dma 4194304 ou [ 92.584367][ T1027] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 92.608330][ T1027] ata1.00: status: { DRDY } [ 92.616958][ T1027] ata1.00: failed command: WRITE FPDMA QUEUED [ 92.625902][ T1027] ata1.00: cmd 61/00:28:36:41:05/20:00:00:00:00/40 tag 5 ncq dma 4194304 ou [ 92.625902][ T1027] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 92.650339][ T1027] ata1.00: status: { DRDY } [ 92.653120][ T1027] ata1.00: failed command: WRITE FPDMA QUEUED [ 92.658789][ T1027] ata1.00: cmd 61/00:30:36:61:05/20:00:00:00:00/40 tag 6 ncq dma 4194304 ou [ 92.658789][ T1027] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 92.680233][ T1027] ata1.00: status: { DRDY } [ 92.684322][ T1027] ata1.00: configured for UDMA/100 [ 92.691319][ T1027] ata1: EH complete Warning: Permanently added '[localhost]:27877' (ED25519) to the list of known hosts. 2026/05/18 14:21:11 parsed 1 programs [ 96.917513][ T9] cfg80211: failed to load regulatory.db [ 97.737481][ T5298] cgroup: Unknown subsys name 'net' [ 97.805570][ T5298] cgroup: Unknown subsys name 'cpuset' [ 97.812668][ T5298] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 99.726683][ T5298] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 105.191899][ T5316] 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. [ 105.627193][ T5322] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 105.633233][ T5322] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 105.637581][ T5322] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 105.642563][ T5322] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 105.646150][ T5322] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 106.435068][ T128] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 106.448028][ T128] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 106.487212][ T69] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 106.492264][ T69] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 109.558791][ T5339] bridge0: port 1(bridge_slave_0) entered blocking state [ 109.569444][ T5339] bridge0: port 1(bridge_slave_0) entered disabled state [ 109.579565][ T5339] bridge_slave_0: entered allmulticast mode [ 109.591804][ T5339] bridge_slave_0: entered promiscuous mode [ 109.613041][ T5339] bridge0: port 2(bridge_slave_1) entered blocking state [ 109.630246][ T5339] bridge0: port 2(bridge_slave_1) entered disabled state [ 109.640797][ T5339] bridge_slave_1: entered allmulticast mode [ 109.646025][ T5339] bridge_slave_1: entered promiscuous mode [ 109.744690][ T5339] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 109.768878][ T5339] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 109.849758][ T5339] team0: Port device team_slave_0 added [ 109.865543][ T5339] team0: Port device team_slave_1 added [ 109.965242][ T5339] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 109.983580][ 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. [ 110.041803][ T5339] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 110.060339][ T5339] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 110.074379][ 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. [ 110.109214][ T5339] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 110.212691][ T5339] hsr_slave_0: entered promiscuous mode [ 110.222198][ T5339] hsr_slave_1: entered promiscuous mode [ 110.622050][ T5339] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 110.653488][ T5339] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 110.665929][ T5339] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 110.687049][ T5339] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 110.693461][ T5339] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 110.713085][ T5339] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 110.718432][ T5339] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 110.735373][ T5339] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 110.933869][ T5339] 8021q: adding VLAN 0 to HW filter on device bond0 [ 110.977542][ T5339] 8021q: adding VLAN 0 to HW filter on device team0 [ 110.998444][ T183] bridge0: port 1(bridge_slave_0) entered blocking state [ 111.002248][ T183] bridge0: port 1(bridge_slave_0) entered forwarding state [ 111.032279][ T183] bridge0: port 2(bridge_slave_1) entered blocking state [ 111.035574][ T183] bridge0: port 2(bridge_slave_1) entered forwarding state [ 111.744436][ T5339] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 111.847654][ T5339] veth0_vlan: entered promiscuous mode [ 111.872870][ T5339] veth1_vlan: entered promiscuous mode [ 111.907793][ T5339] veth0_macvtap: entered promiscuous mode [ 111.914749][ T5339] veth1_macvtap: entered promiscuous mode [ 111.934072][ T5339] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 111.947689][ T5339] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 111.967146][ T128] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.982403][ T128] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 111.997924][ T128] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 112.007122][ T128] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 112.295672][ T69] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 112.484857][ T69] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 113.079826][ T69] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 113.638188][ T69] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 114.633670][ T69] bridge_slave_1: left allmulticast mode [ 114.654278][ T69] bridge_slave_1: left promiscuous mode [ 114.671100][ T69] bridge0: port 2(bridge_slave_1) entered disabled state [ 114.714559][ T69] bridge_slave_0: left allmulticast mode [ 114.726494][ T69] bridge_slave_0: left promiscuous mode [ 114.737123][ T69] bridge0: port 1(bridge_slave_0) entered disabled state [ 114.957973][ T69] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 114.965229][ T69] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 114.971908][ T69] bond0 (unregistering): Released all slaves [ 115.092251][ T69] hsr_slave_0: left promiscuous mode [ 115.095382][ T69] hsr_slave_1: left promiscuous mode [ 115.102025][ T69] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 115.110421][ T69] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 115.118055][ T69] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 115.130208][ T69] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 115.162567][ T69] veth1_macvtap: left promiscuous mode [ 115.165213][ T69] veth0_macvtap: left promiscuous mode [ 115.168035][ T69] veth1_vlan: left promiscuous mode [ 115.180394][ T69] veth0_vlan: left promiscuous mode [ 115.569416][ T69] team0 (unregistering): Port device team_slave_1 removed [ 115.588612][ T69] team0 (unregistering): Port device team_slave_0 removed [ 115.718664][ T5002] 8021q: adding VLAN 0 to HW filter on device eth2 [ 116.516444][ T5002] 8021q: adding VLAN 0 to HW filter on device eth3 [ 117.387405][ T5002] 8021q: adding VLAN 0 to HW filter on device eth4 [ 118.292197][ T5002] 8021q: adding VLAN 0 to HW filter on device eth5 2026/05/18 14:21:36 executed programs: 0 [ 120.249439][ T4655] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 120.258196][ T4655] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 120.264592][ T4655] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 120.269516][ T4655] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 120.274710][ T4655] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 120.861994][ T5459] bridge0: port 1(bridge_slave_0) entered blocking state [ 120.870354][ T5459] bridge0: port 1(bridge_slave_0) entered disabled state [ 120.874409][ T5459] bridge_slave_0: entered allmulticast mode [ 120.883494][ T5459] bridge_slave_0: entered promiscuous mode [ 120.894549][ T5459] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.910270][ T5459] bridge0: port 2(bridge_slave_1) entered disabled state [ 120.913748][ T5459] bridge_slave_1: entered allmulticast mode [ 120.917763][ T5459] bridge_slave_1: entered promiscuous mode [ 120.975580][ T5459] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 120.992379][ T5459] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 121.037847][ T5459] team0: Port device team_slave_0 added [ 121.052533][ T5459] team0: Port device team_slave_1 added [ 121.092331][ T5459] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 121.100272][ T5459] 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. [ 121.120989][ T5459] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 121.135252][ T5459] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 121.138421][ T5459] 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. [ 121.151893][ T5459] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 121.189117][ T5459] hsr_slave_0: entered promiscuous mode [ 121.192515][ T5459] hsr_slave_1: entered promiscuous mode [ 121.944663][ T5459] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 121.963856][ T5459] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 121.968488][ T5459] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 121.985127][ T5459] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 121.997621][ T5459] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 122.018694][ T5459] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 122.031298][ T5459] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 122.038469][ T5459] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 122.218586][ T5459] 8021q: adding VLAN 0 to HW filter on device bond0 [ 122.250663][ T5459] 8021q: adding VLAN 0 to HW filter on device team0 [ 122.267415][ T69] bridge0: port 1(bridge_slave_0) entered blocking state [ 122.270609][ T69] bridge0: port 1(bridge_slave_0) entered forwarding state [ 122.302059][ T183] bridge0: port 2(bridge_slave_1) entered blocking state [ 122.305381][ T183] bridge0: port 2(bridge_slave_1) entered forwarding state [ 122.350973][ T4655] Bluetooth: hci0: command tx timeout [ 123.093792][ T5459] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 123.180599][ T5459] veth0_vlan: entered promiscuous mode [ 123.197196][ T5459] veth1_vlan: entered promiscuous mode [ 123.262337][ T5459] veth0_macvtap: entered promiscuous mode [ 123.277167][ T5459] veth1_macvtap: entered promiscuous mode [ 123.314928][ T5459] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 123.333415][ T5459] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 123.346407][ T41] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 123.361707][ T41] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 123.372240][ T41] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 123.387640][ T41] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 123.569694][ T69] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 123.587154][ T69] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 123.661775][ T41] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 123.673317][ T41] 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) [ 124.744100][ T128] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 125.319610][ T128] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 125.765691][ T128] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 125.821311][ T128] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 126.003511][ T128] bridge_slave_1: left allmulticast mode [ 126.010583][ T128] bridge_slave_1: left promiscuous mode [ 126.014520][ T128] bridge0: port 2(bridge_slave_1) entered disabled state [ 126.031453][ T128] bridge_slave_0: left allmulticast mode [ 126.040799][ T128] bridge_slave_0: left promiscuous mode [ 126.044319][ T128] bridge0: port 1(bridge_slave_0) entered disabled state [ 126.322261][ T128] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 126.337698][ T128] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 126.353783][ T128] bond0 (unregistering): Released all slaves [ 126.365105][ T5002] 8021q: adding VLAN 0 to HW filter on device eth2 [ 126.604113][ T128] hsr_slave_0: left promiscuous mode [ 126.612916][ T128] hsr_slave_1: left promiscuous mode [ 126.620711][ T128] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 126.625703][ T128] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 126.637446][ T128] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 126.650446][ T128] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 126.668573][ T128] veth1_macvtap: left promiscuous mode [ 126.675599][ T128] veth0_macvtap: left promiscuous mode [ 126.683956][ T128] veth1_vlan: left promiscuous mode [ 126.691754][ T128] veth0_vlan: left promiscuous mode [ 126.998536][ T128] team0 (unregistering): Port device team_slave_1 removed [ 127.018605][ T128] team0 (unregistering): Port device team_slave_0 removed [ 127.128066][ T5002] 8021q: adding VLAN 0 to HW filter on device eth3 [ 127.461173][ T5002] 8021q: adding VLAN 0 to HW filter on device eth4 [ 127.657199][ T5002] 8021q: adding VLAN 0 to HW filter on device eth5 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-build298322671=/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/ccEkw4ZM.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