lost connection to test machine syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0xb4000) [ 80.356448][ T1029] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 80.370218][ T1029] ata1: failed to read log page 10h (errno=-5) [ 80.376757][ T1029] ata1.00: exception Emask 0x1 SAct 0xc000 SErr 0x0 action 0x0 [ 80.388612][ T1029] ata1.00: irq_stat 0x40000000 [ 80.397714][ T1029] ata1.00: failed command: WRITE FPDMA QUEUED [ 80.405036][ T1029] ata1.00: cmd 61/a0:70:c6:6f:04/05:00:00:00:00/40 tag 14 ncq dma 737280 out [ 80.405036][ T1029] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 80.421533][ T1029] ata1.00: status: { DRDY } [ 80.427382][ T1029] ata1.00: failed command: WRITE FPDMA QUEUED [ 80.433852][ T1029] ata1.00: cmd 61/08:78:66:75:04/03:00:00:00:00/40 tag 15 ncq dma 397312 out [ 80.433852][ T1029] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 80.450878][ T1029] ata1.00: status: { DRDY } [ 80.459099][ T1029] ata1.00: configured for UDMA/100 [ 80.466888][ T1029] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x3a7000) [ 81.245611][ T1029] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 81.258510][ T1029] ata1: failed to read log page 10h (errno=-5) [ 81.271331][ T1029] ata1.00: exception Emask 0x1 SAct 0x1800 SErr 0x0 action 0x0 [ 81.285079][ T1029] ata1.00: irq_stat 0x41000000 [ 81.295238][ T1029] ata1.00: failed command: WRITE FPDMA QUEUED [ 81.302306][ T1029] ata1.00: cmd 61/38:58:36:41:05/1d:00:00:00:00/40 tag 11 ncq dma 3829760 ou [ 81.302306][ T1029] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 81.318824][ T1029] ata1.00: status: { DRDY } [ 81.325772][ T1029] ata1.00: failed command: WRITE FPDMA QUEUED [ 81.332305][ T1029] ata1.00: cmd 61/68:60:6e:5e:05/0b:00:00:00:00/40 tag 12 ncq dma 1495040 ou [ 81.332305][ T1029] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 81.349653][ T1029] ata1.00: status: { DRDY } [ 81.353103][ T1029] ata1.00: configured for UDMA/100 [ 81.361731][ T1029] ata1: EH complete Warning: Permanently added '[localhost]:34601' (ED25519) to the list of known hosts. 2026/07/22 23:52:40 parsed 1 programs 2026/07/22 23:52:40 serving rpc on tcp://39447 [ 90.821683][ T5295] cgroup: Unknown subsys name 'net' [ 90.897155][ T5295] cgroup: Unknown subsys name 'cpuset' [ 90.904538][ T5295] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 91.815134][ T937] cfg80211: failed to load regulatory.db [ 92.420733][ T5295] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x1f2000) [ 93.604513][ T1029] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 93.618327][ T1029] ata1: failed to read log page 10h (errno=-5) [ 93.630842][ T1029] ata1.00: NCQ disabled due to excessive errors [ 93.641682][ T1029] ata1.00: exception Emask 0x1 SAct 0x40000000 SErr 0x0 action 0x0 [ 93.656089][ T1029] ata1.00: irq_stat 0x41000008 [ 93.663188][ T1029] ata1.00: failed command: WRITE FPDMA QUEUED [ 93.671051][ T1029] ata1.00: cmd 61/90:f0:5e:cd:05/0f:00:00:00:00/40 tag 30 ncq dma 2039808 ou [ 93.671051][ T1029] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 93.690293][ T1029] ata1.00: status: { DRDY } [ 93.692486][ T1029] ata1.00: error: { ABRT } [ 93.695735][ T1029] ata1.00: configured for UDMA/100 [ 93.698368][ T1029] ata1: EH complete [ 96.688042][ T5321] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 96.693488][ T5321] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 96.704664][ T5321] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 96.711565][ T5321] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 96.716647][ T5321] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 97.594641][ T5317] 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. [ 98.108690][ T177] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 98.124880][ T177] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 98.313659][ T13] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 98.341469][ T13] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 98.770933][ T5321] Bluetooth: hci0: command tx timeout [ 105.295351][ T5344] bridge0: port 1(bridge_slave_0) entered blocking state [ 105.311058][ T5344] bridge0: port 1(bridge_slave_0) entered disabled state [ 105.317840][ T5344] bridge_slave_0: entered allmulticast mode [ 105.671216][ T5344] bridge_slave_0: entered promiscuous mode [ 105.686405][ T5344] bridge0: port 2(bridge_slave_1) entered blocking state [ 105.700823][ T5344] bridge0: port 2(bridge_slave_1) entered disabled state [ 105.703962][ T5344] bridge_slave_1: entered allmulticast mode [ 105.718006][ T5344] bridge_slave_1: entered promiscuous mode [ 105.894352][ T5344] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 105.912231][ T5344] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 105.978802][ T5344] team0: Port device team_slave_0 added [ 106.035471][ T5344] team0: Port device team_slave_1 added [ 106.191508][ T5344] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 106.200589][ T5344] 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. [ 106.227225][ T5344] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 106.243185][ T5344] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 106.257139][ T5344] 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. [ 106.282953][ T5344] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 107.244976][ T5344] hsr_slave_0: entered promiscuous mode [ 107.248525][ T5344] hsr_slave_1: entered promiscuous mode qemu-system-x86_64: hw/ide/core.c:934: ide_dma_cb: Assertion `prep_size >= 0 && prep_size <= n * 512' failed. Connection to localhost closed by remote host. 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-build729769288=/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 ab40da5885 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=ab40da588520f57666defad7c6f0e2e75cd9b6c6 -X github.com/google/syzkaller/prog.gitRevisionDate=20260708-103818" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=ab40da588520f57666defad7c6f0e2e75cd9b6c6 -X github.com/google/syzkaller/prog.gitRevisionDate=20260708-103818" ./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=ab40da588520f57666defad7c6f0e2e75cd9b6c6 -X github.com/google/syzkaller/prog.gitRevisionDate=20260708-103818" -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=\"ab40da588520f57666defad7c6f0e2e75cd9b6c6\" /usr/bin/ld: /tmp/cc2bmnlj.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