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]:17084' (ED25519) to the list of known hosts. 2026/06/08 18:02:17 parsed 1 programs [ 96.969327][ T52] cfg80211: failed to load regulatory.db [ 97.551246][ T5299] cgroup: Unknown subsys name 'net' [ 97.622457][ T5299] cgroup: Unknown subsys name 'cpuset' [ 97.630232][ T5299] cgroup: Unknown subsys name 'rlimit' [ 143.048313][ T1334] ieee802154 phy0 wpan0: encryption failed: -22 [ 143.051282][ T1334] ieee802154 phy1 wpan1: encryption failed: -22 [ 153.305577][ T1028] ata1.00: exception Emask 0x0 SAct 0x100 SErr 0x0 action 0x6 frozen [ 153.309168][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 153.311864][ T1028] ata1.00: cmd 61/00:40:36:41:05/20:00:00:00:00/40 tag 8 ncq dma 4194304 ou [ 153.311864][ T1028] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 153.320282][ T1028] ata1.00: status: { DRDY } [ 153.322430][ T1028] ata1: hard resetting link [ 153.646936][ T1028] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 153.651738][ T1028] ata1.00: configured for UDMA/100 [ 153.654182][ T1028] ata1: EH complete [ 155.394881][ T5299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 160.816792][ T5339] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 160.822993][ T5339] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 160.828723][ T5339] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 160.834056][ T5339] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 160.838910][ T5339] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 162.578397][ T5337] 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. [ 162.886449][ T4657] Bluetooth: hci0: command tx timeout [ 168.569217][ T5335] bridge0: port 1(bridge_slave_0) entered blocking state [ 168.573772][ T5335] bridge0: port 1(bridge_slave_0) entered disabled state [ 168.599525][ T5335] bridge_slave_0: entered allmulticast mode [ 168.604413][ T5335] bridge_slave_0: entered promiscuous mode [ 168.761499][ T5335] bridge0: port 2(bridge_slave_1) entered blocking state [ 168.773360][ T5335] bridge0: port 2(bridge_slave_1) entered disabled state [ 168.788223][ T5335] bridge_slave_1: entered allmulticast mode [ 168.815253][ T5335] bridge_slave_1: entered promiscuous mode [ 170.866410][ T5335] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 171.192556][ T5335] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 171.412213][ T5335] team0: Port device team_slave_0 added [ 171.439882][ T5335] team0: Port device team_slave_1 added [ 172.102366][ T5335] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 172.117835][ T5335] 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. [ 172.145378][ T5335] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 172.171457][ T5335] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 172.174631][ T5335] 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. [ 172.205508][ T5335] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 172.818515][ T5335] hsr_slave_0: entered promiscuous mode [ 172.832889][ T5335] hsr_slave_1: entered promiscuous mode [ 172.848088][ T12] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 172.863537][ T12] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 174.347068][ T30] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 174.355345][ T30] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 176.121406][ T5335] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 176.447696][ T5335] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 176.452545][ T5335] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 176.611668][ T5335] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 176.620034][ T5335] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 176.928460][ T5335] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 176.936396][ T5335] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 177.395391][ T5335] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 178.455641][ T5335] 8021q: adding VLAN 0 to HW filter on device bond0 [ 178.508016][ T5335] 8021q: adding VLAN 0 to HW filter on device team0 [ 178.535511][ T37] bridge0: port 1(bridge_slave_0) entered blocking state [ 178.538729][ T37] bridge0: port 1(bridge_slave_0) entered forwarding state [ 178.583235][ T37] bridge0: port 2(bridge_slave_1) entered blocking state [ 178.586419][ T37] bridge0: port 2(bridge_slave_1) entered forwarding state [ 182.091181][ T5335] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 182.235645][ T5335] veth0_vlan: entered promiscuous mode [ 182.428196][ T5335] veth1_vlan: entered promiscuous mode [ 182.529405][ T5335] veth0_macvtap: entered promiscuous mode [ 182.551335][ T5335] veth1_macvtap: entered promiscuous mode [ 182.608680][ T5335] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 182.634271][ T5335] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 182.670505][ T30] netdevsim netdevsim1 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 182.690413][ T30] netdevsim netdevsim1 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 182.714885][ T30] netdevsim netdevsim1 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 182.725617][ T30] netdevsim netdevsim1 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x22f000) [ 184.706478][ T1028] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 184.710058][ T1028] ata1: failed to read log page 10h (errno=-5) [ 184.724693][ T1028] ata1.00: NCQ disabled due to excessive errors [ 184.736312][ T1028] ata1.00: exception Emask 0x1 SAct 0x800 SErr 0x0 action 0x0 [ 184.745753][ T1028] ata1.00: irq_stat 0x41000008 [ 184.748386][ T1028] ata1.00: failed command: READ FPDMA QUEUED [ 184.754128][ T1028] ata1.00: cmd 60/78:58:26:51:05/11:00:00:00:00/40 tag 11 ncq dma 2289664 in [ 184.754128][ T1028] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 184.773331][ T1028] ata1.00: status: { DRDY } [ 184.783703][ T1028] ata1.00: error: { ABRT } [ 184.787290][ T1028] ata1.00: configured for UDMA/100 [ 184.794485][ T1028] sd 0:0:0:0: [sda] tag#11 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 184.807378][ T1028] sd 0:0:0:0: [sda] tag#11 Sense Key : Aborted Command [current] [ 184.814717][ T1028] sd 0:0:0:0: [sda] tag#11 Add. Sense: No additional sense information [ 184.825016][ T1028] sd 0:0:0:0: [sda] tag#11 CDB: Read(10) 28 00 00 05 51 26 00 11 78 00 [ 184.845486][ T1028] I/O error, dev sda, sector 348454 op 0x0:(READ) flags 0x80700 phys_seg 158 prio class 2 [ 184.853750][ T1028] ata1: EH complete 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-build3601461684=/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 7368264b463a 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=7368264b463a401571d2eb381f50ea2a758e9d05 -X github.com/google/syzkaller/prog.gitRevisionDate=20250801-160258" -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=\"7368264b463a401571d2eb381f50ea2a758e9d05\" /usr/bin/ld: /tmp/ccGAG1Vy.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