lost connection to test machine syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0xc6000) qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x1a6000) Warning: Permanently added '[localhost]:4515' (ED25519) to the list of known hosts. 2026/10/06 22:25:41 parsed 1 programs [ 89.527054][ T5289] cgroup: Unknown subsys name 'net' [ 89.579541][ T5289] cgroup: Unknown subsys name 'cpuset' [ 89.582766][ T5289] cgroup: Unknown subsys name 'rlimit' [ 92.049455][ T55] cfg80211: failed to load regulatory.db [ 110.684174][ T1026] ata1.00: exception Emask 0x0 SAct 0x40000800 SErr 0x0 action 0x6 frozen [ 110.684234][ T1026] ata1.00: failed command: WRITE FPDMA QUEUED [ 110.684242][ T1026] ata1.00: cmd 61/30:58:d6:89:04/0d:00:00:00:00/40 tag 11 ncq dma 1728512 ou [ 110.684242][ T1026] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 110.684274][ T1026] ata1.00: status: { DRDY } [ 110.684285][ T1026] ata1.00: failed command: WRITE FPDMA QUEUED [ 110.684291][ T1026] ata1.00: cmd 61/30:f0:36:52:04/06:00:00:00:00/40 tag 30 ncq dma 811008 out [ 110.684291][ T1026] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 110.684319][ T1026] ata1.00: status: { DRDY } [ 110.684369][ T1026] ata1: hard resetting link [ 111.008284][ T1026] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 111.010300][ T1026] ata1.00: configured for UDMA/100 [ 111.010620][ T1026] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) [ 111.066747][ T1026] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 111.066761][ T1026] ata1: failed to read log page 10h (errno=-5) [ 111.066771][ T1026] ata1.00: exception Emask 0x1 SAct 0x700000 SErr 0x0 action 0x0 [ 111.066778][ T1026] ata1.00: irq_stat 0x41000000 [ 111.066786][ T1026] ata1.00: failed command: WRITE FPDMA QUEUED [ 111.066791][ T1026] ata1.00: cmd 61/00:a0:36:21:05/20:00:00:00:00/40 tag 20 ncq dma 4194304 ou [ 111.066791][ T1026] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 111.066827][ T1026] ata1.00: status: { DRDY } [ 111.066836][ T1026] ata1.00: failed command: WRITE FPDMA QUEUED [ 111.066843][ T1026] ata1.00: cmd 61/00:a8:36:41:05/20:00:00:00:00/40 tag 21 ncq dma 4194304 ou [ 111.066843][ T1026] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 111.066873][ T1026] ata1.00: status: { DRDY } [ 111.066883][ T1026] ata1.00: failed command: WRITE FPDMA QUEUED [ 111.066889][ T1026] ata1.00: cmd 61/00:b0:36:61:05/20:00:00:00:00/40 tag 22 ncq dma 4194304 ou [ 111.066889][ T1026] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 111.066918][ T1026] ata1.00: status: { DRDY } [ 111.073325][ T1026] ata1.00: configured for UDMA/100 qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) [ 111.125992][ T1026] ata1: EH complete [ 111.160353][ T1026] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 111.160375][ T1026] ata1: failed to read log page 10h (errno=-5) [ 111.160388][ T1026] ata1.00: NCQ disabled due to excessive errors [ 111.160397][ T1026] ata1.00: exception Emask 0x1 SAct 0x60000001 SErr 0x0 action 0x0 [ 111.160410][ T1026] ata1.00: irq_stat 0x41000000 [ 111.160421][ T1026] ata1.00: failed command: WRITE FPDMA QUEUED [ 111.160429][ T1026] ata1.00: cmd 61/f0:00:3e:87:05/02:00:00:00:00/40 tag 0 ncq dma 385024 out [ 111.160429][ T1026] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 111.160461][ T1026] ata1.00: status: { DRDY } [ 111.160473][ T1026] ata1.00: failed command: WRITE FPDMA QUEUED [ 111.160480][ T1026] ata1.00: cmd 61/00:e8:36:41:05/20:00:00:00:00/40 tag 29 ncq dma 4194304 ou [ 111.160480][ T1026] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 111.160512][ T1026] ata1.00: status: { DRDY } [ 111.160522][ T1026] ata1.00: failed command: WRITE FPDMA QUEUED [ 111.160528][ T1026] ata1.00: cmd 61/00:f0:36:61:05/20:00:00:00:00/40 tag 30 ncq dma 4194304 ou [ 111.160528][ T1026] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 111.160560][ T1026] ata1.00: status: { DRDY } [ 111.222792][ T1026] ata1.00: configured for UDMA/100 [ 111.229709][ T1026] ata1: EH complete [ 114.012210][ T5289] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 120.146051][ T5317] soft_limit_in_bytes is deprecated and will be removed. Writing any value to this file has no effect. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 124.460864][ T46] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 124.470007][ T46] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 124.472944][ T46] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 124.473614][ T46] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 124.485243][ T46] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 126.525563][ T4645] Bluetooth: hci0: command tx timeout [ 127.382322][ T39] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 127.382340][ T39] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 128.469257][ T37] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 128.469275][ T37] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 128.604183][ T4645] Bluetooth: hci0: command tx timeout [ 131.531660][ T5355] bridge0: port 1(bridge_slave_0) entered blocking state [ 131.533292][ T5355] bridge0: port 1(bridge_slave_0) entered disabled state [ 131.533451][ T5355] bridge_slave_0: entered allmulticast mode [ 131.547825][ T5355] bridge_slave_0: entered promiscuous mode [ 131.584972][ T5355] bridge0: port 2(bridge_slave_1) entered blocking state [ 131.585050][ T5355] bridge0: port 2(bridge_slave_1) entered disabled state [ 131.585175][ T5355] bridge_slave_1: entered allmulticast mode [ 131.587990][ T5355] bridge_slave_1: entered promiscuous mode [ 132.296658][ T5355] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 132.303403][ T5355] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 133.142413][ T5355] team0: Port device team_slave_0 added [ 133.151765][ T5355] team0: Port device team_slave_1 added [ 133.900942][ T5355] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 133.900959][ T5355] 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. [ 133.900975][ T5355] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 133.976743][ T5355] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 133.976757][ T5355] 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. [ 133.976772][ T5355] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 134.216869][ T5355] hsr_slave_0: entered promiscuous mode [ 134.221424][ T5355] hsr_slave_1: entered promiscuous mode qemu-system-x86_64: hw/ide/core.c:925: 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-build745965380=/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 9e70464425e 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}}' ./sys/syz-sysgen | grep -q false || go install ./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=9e70464425eebd2fa590c49a04f09e407d4bc3d4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250429-124227'" -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=\"9e70464425eebd2fa590c49a04f09e407d4bc3d4\" /usr/bin/ld: /tmp/ccawSCi6.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