lost connection to test machine syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) Warning: Permanently added '[localhost]:22675' (ED25519) to the list of known hosts. [ 91.833363][ T10] cfg80211: failed to load regulatory.db [ 144.969272][ T1028] ata1.00: exception Emask 0x0 SAct 0x4000 SErr 0x0 action 0x6 frozen [ 144.972930][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 144.977378][ T1028] ata1.00: cmd 61/00:70:56:5c:04/20:00:00:00:00/40 tag 14 ncq dma 4194304 ou [ 144.977378][ T1028] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 144.991072][ T1028] ata1.00: status: { DRDY } [ 144.993223][ T1028] ata1: hard resetting link [ 145.314744][ T1028] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 145.319097][ T1028] ata1.00: configured for UDMA/100 [ 145.321646][ T1028] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x315000) [ 205.764030][ T1028] ata1.00: NCQ disabled due to excessive errors [ 205.766969][ T1028] ata1.00: exception Emask 0x0 SAct 0x1000000 SErr 0x0 action 0x6 frozen [ 205.770459][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 205.773016][ T1028] ata1.00: cmd 61/a8:c0:36:e1:04/18:00:00:00:00/40 tag 24 ncq dma 3231744 ou [ 205.773016][ T1028] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 205.780773][ T1028] ata1.00: status: { DRDY } [ 205.782864][ T1028] ata1: hard resetting link [ 206.105387][ T1028] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 206.109450][ T1028] ata1.00: configured for UDMA/100 [ 206.111989][ T1028] ata1: EH complete 2026/07/27 15:17:15 parsed 1 programs [ 210.949026][ T5325] cgroup: Unknown subsys name 'net' [ 211.002043][ T5325] cgroup: Unknown subsys name 'cpuset' [ 211.008244][ T5325] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 212.605310][ T5325] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 217.786188][ T5335] 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. [ 219.390570][ T5341] bridge0: port 1(bridge_slave_0) entered blocking state [ 219.395302][ T5341] bridge0: port 1(bridge_slave_0) entered disabled state [ 219.398441][ T5341] bridge_slave_0: entered allmulticast mode [ 219.402004][ T5341] bridge_slave_0: entered promiscuous mode [ 219.410130][ T5341] bridge0: port 2(bridge_slave_1) entered blocking state [ 219.413289][ T5341] bridge0: port 2(bridge_slave_1) entered disabled state [ 219.416937][ T5341] bridge_slave_1: entered allmulticast mode [ 219.420859][ T5341] bridge_slave_1: entered promiscuous mode [ 219.450052][ T5341] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 219.457143][ T5341] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 219.483619][ T5341] team0: Port device team_slave_0 added [ 219.488744][ T5341] team0: Port device team_slave_1 added [ 219.512990][ T5341] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 219.516220][ T5341] 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. [ 219.527590][ T5341] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 219.537594][ T5341] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 219.540273][ T5341] 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. [ 219.551431][ T5341] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 219.595865][ T5341] hsr_slave_0: entered promiscuous mode [ 219.599309][ T5341] hsr_slave_1: entered promiscuous mode [ 219.914079][ T5341] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 219.953438][ T5341] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 219.966413][ T5341] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 219.978728][ T5341] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 219.987733][ T5341] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 220.004318][ T5341] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 220.015404][ T5341] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 220.026748][ T5341] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 220.100246][ T5341] bridge0: port 2(bridge_slave_1) entered blocking state [ 220.104026][ T5341] bridge0: port 2(bridge_slave_1) entered forwarding state [ 220.107602][ T5341] bridge0: port 1(bridge_slave_0) entered blocking state [ 220.110690][ T5341] bridge0: port 1(bridge_slave_0) entered forwarding state [ 220.279545][ T5341] 8021q: adding VLAN 0 to HW filter on device bond0 [ 220.311265][ T30] bridge0: port 1(bridge_slave_0) entered disabled state [ 220.326031][ T30] bridge0: port 2(bridge_slave_1) entered disabled state [ 220.360196][ T5341] 8021q: adding VLAN 0 to HW filter on device team0 [ 220.381648][ T30] bridge0: port 1(bridge_slave_0) entered blocking state [ 220.384927][ T30] bridge0: port 1(bridge_slave_0) entered forwarding state [ 220.415766][ T30] bridge0: port 2(bridge_slave_1) entered blocking state [ 220.419033][ T30] bridge0: port 2(bridge_slave_1) entered forwarding state [ 220.815746][ T5341] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 220.861004][ T5341] veth0_vlan: entered promiscuous mode [ 220.871971][ T5341] veth1_vlan: entered promiscuous mode [ 220.907008][ T5341] veth0_macvtap: entered promiscuous mode [ 220.914931][ T5341] veth1_macvtap: entered promiscuous mode [ 220.929704][ T5341] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 220.942354][ T5341] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 220.964956][ T186] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 220.975852][ T186] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 220.982625][ T186] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 221.002222][ T186] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 221.349483][ T30] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 221.941075][ T44] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 221.946750][ T44] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 221.951302][ T44] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 221.955511][ T44] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 221.958935][ T44] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 222.191512][ T30] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 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-build4260984769=/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/cc7j8mfN.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