lost connection to test machine syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0xac000) Warning: Permanently added '[localhost]:45008' (ED25519) to the list of known hosts. 2026/05/20 00:07:35 parsed 1 programs [ 96.524590][ T5300] cgroup: Unknown subsys name 'net' [ 96.584491][ T5300] cgroup: Unknown subsys name 'cpuset' [ 96.591345][ T5300] cgroup: Unknown subsys name 'rlimit' [ 96.981375][ T9] cfg80211: failed to load regulatory.db [ 143.058901][ T1329] ieee802154 phy0 wpan0: encryption failed: -22 [ 143.061844][ T1329] ieee802154 phy1 wpan1: encryption failed: -22 [ 151.396594][ T1028] ata1.00: exception Emask 0x0 SAct 0x4000 SErr 0x0 action 0x6 frozen [ 151.400357][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 151.403086][ T1028] ata1.00: cmd 61/60:70:06:5b:04/05:00:00:00:00/40 tag 14 ncq dma 704512 out [ 151.403086][ T1028] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 151.411215][ T1028] ata1.00: status: { DRDY } [ 151.413758][ T1028] ata1: hard resetting link [ 151.738377][ T1028] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 151.743418][ T1028] ata1.00: configured for UDMA/100 [ 151.746068][ T1028] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) [ 204.499642][ T1329] ieee802154 phy0 wpan0: encryption failed: -22 [ 204.502907][ T1329] ieee802154 phy1 wpan1: encryption failed: -22 [ 212.196398][ T1028] ata1.00: exception Emask 0x0 SAct 0x800 SErr 0x0 action 0x6 frozen [ 212.199896][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 212.202708][ T1028] ata1.00: cmd 61/00:58:36:41:05/20:00:00:00:00/40 tag 11 ncq dma 4194304 ou [ 212.202708][ T1028] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 212.211216][ T1028] ata1.00: status: { DRDY } [ 212.214073][ T1028] ata1: hard resetting link [ 212.538209][ T1028] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 212.542520][ T1028] ata1.00: configured for UDMA/100 [ 212.545351][ T1028] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x20b000) [ 212.673478][ T1028] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 212.696815][ T1028] ata1: failed to read log page 10h (errno=-5) [ 212.699423][ T1028] ata1.00: NCQ disabled due to excessive errors [ 212.702749][ T1028] ata1.00: exception Emask 0x1 SAct 0x1800 SErr 0x0 action 0x0 [ 212.717808][ T1028] ata1.00: irq_stat 0x41000000 [ 212.722476][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 212.734647][ T1028] ata1.00: cmd 61/58:58:ae:91:05/10:00:00:00:00/40 tag 11 ncq dma 2142208 ou [ 212.734647][ T1028] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 212.764094][ T1028] ata1.00: status: { DRDY } [ 212.772188][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 212.781634][ T1028] ata1.00: cmd 61/00:60:36:41:0c/20:00:00:00:00/40 tag 12 ncq dma 4194304 ou [ 212.781634][ T1028] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 212.808804][ T1028] ata1.00: status: { DRDY } [ 212.825907][ T1028] ata1.00: configured for UDMA/100 [ 212.834659][ T1028] ata1: EH complete [ 214.470270][ T5300] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 220.543511][ T5338] 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. [ 224.692805][ T5356] bridge0: port 1(bridge_slave_0) entered blocking state [ 224.698740][ T5356] bridge0: port 1(bridge_slave_0) entered disabled state [ 224.702376][ T5356] bridge_slave_0: entered allmulticast mode [ 224.707651][ T5356] bridge_slave_0: entered promiscuous mode [ 224.716508][ T5356] bridge0: port 2(bridge_slave_1) entered blocking state [ 224.719902][ T5356] bridge0: port 2(bridge_slave_1) entered disabled state [ 224.723373][ T5356] bridge_slave_1: entered allmulticast mode [ 224.728132][ T5356] bridge_slave_1: entered promiscuous mode [ 224.765542][ T5356] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 224.790031][ T5356] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 224.915616][ T5356] team0: Port device team_slave_0 added [ 224.930986][ T5356] team0: Port device team_slave_1 added [ 225.014467][ T5356] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 225.024713][ T5356] 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. [ 225.066770][ T5356] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 225.087316][ T5356] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 225.096950][ T5356] 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. [ 225.131169][ T5356] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 225.221087][ T5356] hsr_slave_0: entered promiscuous mode [ 225.236791][ T5356] hsr_slave_1: entered promiscuous mode [ 225.583244][ T5356] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 225.640835][ T5356] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 225.657614][ T5356] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 225.668206][ T5356] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 225.679467][ T5356] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 225.701505][ T5356] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 225.708174][ T5356] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 225.729479][ T5356] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 225.972037][ T5356] 8021q: adding VLAN 0 to HW filter on device bond0 [ 226.003555][ T5356] 8021q: adding VLAN 0 to HW filter on device team0 [ 226.041552][ T1084] bridge0: port 1(bridge_slave_0) entered blocking state [ 226.045462][ T1084] bridge0: port 1(bridge_slave_0) entered forwarding state [ 226.083585][ T1084] bridge0: port 2(bridge_slave_1) entered blocking state [ 226.087254][ T1084] bridge0: port 2(bridge_slave_1) entered forwarding state [ 226.656013][ T5356] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 226.718874][ T5356] veth0_vlan: entered promiscuous mode [ 226.731255][ T5356] veth1_vlan: entered promiscuous mode [ 226.770262][ T5356] veth0_macvtap: entered promiscuous mode [ 226.777114][ T5356] veth1_macvtap: entered promiscuous mode [ 226.793470][ T5356] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 226.822851][ T5356] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 226.862983][ T182] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 226.878809][ T182] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 226.891911][ T182] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 226.906585][ T182] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 227.289829][ T1084] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 227.723647][ T5399] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 227.731614][ T5399] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 227.738178][ T5399] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 227.742040][ T5399] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 227.745696][ T5399] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 227.848984][ T1084] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 228.401777][ T1084] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 228.951430][ T1084] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 229.767728][ T1084] bridge_slave_1: left allmulticast mode [ 229.773137][ T1084] bridge_slave_1: left promiscuous mode [ 229.783266][ T1084] bridge0: port 2(bridge_slave_1) entered disabled state [ 229.801985][ T1084] bridge_slave_0: left allmulticast mode [ 229.804790][ T1084] bridge_slave_0: left promiscuous mode [ 229.809543][ T1084] bridge0: port 1(bridge_slave_0) entered disabled state [ 229.977096][ T1084] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 229.989145][ T1084] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 229.994412][ T1084] bond0 (unregistering): Released all slaves [ 230.105482][ T1084] hsr_slave_0: left promiscuous mode [ 230.113981][ T1084] hsr_slave_1: left promiscuous mode [ 230.120520][ T1084] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 230.123788][ T1084] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 230.129852][ T1084] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 230.133444][ T1084] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 230.148241][ T1084] veth1_macvtap: left promiscuous mode [ 230.151621][ T1084] veth0_macvtap: left promiscuous mode [ 230.154346][ T1084] veth1_vlan: left promiscuous mode [ 230.158054][ T1084] veth0_vlan: left promiscuous mode [ 230.448142][ T1084] team0 (unregistering): Port device team_slave_1 removed [ 230.461503][ T1084] team0 (unregistering): Port device team_slave_0 removed 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-build2336416233=/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 d34966d146f5 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=d34966d146f584d390b49f213d1fccd59548dc6d -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250221-172117'" -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=\"d34966d146f584d390b49f213d1fccd59548dc6d\" /usr/bin/ld: /tmp/cciRwmZf.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