lost connection to test machine syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0xc7000) [ 122.289417][ T1020] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 122.306867][ T1020] ata1: failed to read log page 10h (errno=-5) [ 122.316172][ T1020] ata1.00: exception Emask 0x1 SAct 0xc000 SErr 0x0 action 0x0 [ 122.336425][ T1020] ata1.00: irq_stat 0x41000000 [ 122.348901][ T1020] ata1.00: failed command: WRITE FPDMA QUEUED [ 122.356815][ T1020] ata1.00: cmd 61/38:70:56:b1:04/06:00:00:00:00/40 tag 14 ncq dma 815104 out [ 122.356815][ T1020] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 122.378485][ T1020] ata1.00: status: { DRDY } [ 122.385152][ T1020] ata1.00: failed command: WRITE FPDMA QUEUED [ 122.398719][ T1020] ata1.00: cmd 61/c8:78:8e:b7:04/06:00:00:00:00/40 tag 15 ncq dma 888832 out [ 122.398719][ T1020] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 122.418809][ T1020] ata1.00: status: { DRDY } [ 122.428362][ T1020] ata1.00: configured for UDMA/100 [ 122.435654][ T1020] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x16c000) [ 122.510965][ T1020] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 122.514635][ T1020] ata1: failed to read log page 10h (errno=-5) [ 122.536628][ T1020] ata1.00: exception Emask 0x1 SAct 0xf000 SErr 0x0 action 0x0 [ 122.549382][ T1020] ata1.00: irq_stat 0x41000000 [ 122.560480][ T1020] ata1.00: failed command: WRITE FPDMA QUEUED [ 122.576569][ T1020] ata1.00: cmd 61/78:60:0e:ec:04/0f:00:00:00:00/40 tag 12 ncq dma 2027520 ou [ 122.576569][ T1020] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 122.611383][ T1020] ata1.00: status: { DRDY } [ 122.623835][ T1020] ata1.00: failed command: WRITE FPDMA QUEUED [ 122.632707][ T1020] ata1.00: cmd 61/b0:68:86:fb:04/05:00:00:00:00/40 tag 13 ncq dma 745472 out [ 122.632707][ T1020] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 122.662944][ T1020] ata1.00: status: { DRDY } [ 122.673284][ T1020] ata1.00: failed command: WRITE FPDMA QUEUED [ 122.686547][ T1020] ata1.00: cmd 61/60:70:36:01:05/0b:00:00:00:00/40 tag 14 ncq dma 1490944 ou [ 122.686547][ T1020] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 122.720191][ T1020] ata1.00: status: { DRDY } [ 122.730164][ T1020] ata1.00: failed command: WRITE FPDMA QUEUED [ 122.749562][ T1020] ata1.00: cmd 61/10:78:96:0c:05/0c:00:00:00:00/40 tag 15 ncq dma 1581056 ou [ 122.749562][ T1020] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 122.785661][ T1020] ata1.00: status: { DRDY } [ 122.794335][ T1020] ata1.00: configured for UDMA/100 [ 122.801979][ T1020] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x182000) [ 152.996535][ T1020] ata1.00: NCQ disabled due to excessive errors [ 152.999208][ T1020] ata1.00: exception Emask 0x0 SAct 0x8000000 SErr 0x0 action 0x6 frozen [ 153.002759][ T1020] ata1.00: failed command: WRITE FPDMA QUEUED [ 153.005574][ T1020] ata1.00: cmd 61/10:d8:96:0c:05/0c:00:00:00:00/40 tag 27 ncq dma 1581056 ou [ 153.005574][ T1020] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 153.013827][ T1020] ata1.00: status: { DRDY } [ 153.016120][ T1020] ata1: hard resetting link [ 153.337971][ T1020] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 153.342238][ T1020] ata1.00: configured for UDMA/100 [ 153.345115][ T1020] ata1: EH complete Warning: Permanently added '[localhost]:47491' (ED25519) to the list of known hosts. 2026/08/10 13:58:41 parsed 1 programs [ 164.074406][ T5293] cgroup: Unknown subsys name 'net' [ 164.152429][ T5293] cgroup: Unknown subsys name 'cpuset' [ 164.161782][ T5293] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 166.281102][ T5293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 173.078158][ T44] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 173.085499][ T44] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 173.092172][ T44] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 173.101916][ T44] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 173.107838][ T44] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 174.850953][ T5315] 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. [ 175.137726][ T4637] Bluetooth: hci0: command tx timeout [ 181.624623][ T5316] bridge0: port 1(bridge_slave_0) entered blocking state [ 181.654339][ T5316] bridge0: port 1(bridge_slave_0) entered disabled state [ 181.688154][ T5316] bridge_slave_0: entered allmulticast mode [ 181.741595][ T5316] bridge_slave_0: entered promiscuous mode [ 183.368309][ T5316] bridge0: port 2(bridge_slave_1) entered blocking state [ 183.385083][ T5316] bridge0: port 2(bridge_slave_1) entered disabled state [ 183.396622][ T5316] bridge_slave_1: entered allmulticast mode [ 183.410686][ T5316] bridge_slave_1: entered promiscuous mode [ 186.035447][ T5316] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 186.067587][ T5316] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 187.277671][ T5316] team0: Port device team_slave_0 added [ 187.335831][ T5316] team0: Port device team_slave_1 added [ 188.018245][ T5316] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 188.062984][ T5316] 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. [ 188.143576][ T5316] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 188.334504][ T5316] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 188.360520][ T5316] 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. [ 188.432622][ T5316] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active 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-build2802542097=/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 d1b870e100 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/ccPIHWh6.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