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) qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x1b3000) Warning: Permanently added '[localhost]:30141' (ED25519) to the list of known hosts. [ 102.360562][ T10] cfg80211: failed to load regulatory.db 2026/04/20 20:43:00 parsed 1 programs [ 106.697168][ T5322] cgroup: Unknown subsys name 'net' [ 106.772091][ T5322] cgroup: Unknown subsys name 'cpuset' [ 106.779895][ T5322] cgroup: Unknown subsys name 'rlimit' [ 148.438747][ T1327] ieee802154 phy0 wpan0: encryption failed: -22 [ 148.443149][ T1327] ieee802154 phy1 wpan1: encryption failed: -22 [ 161.895970][ T1024] ata1.00: exception Emask 0x0 SAct 0x8004000 SErr 0x0 action 0x6 frozen [ 161.899882][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 161.903416][ T1024] ata1.00: cmd 61/98:70:36:21:05/0d:00:00:00:00/40 tag 14 ncq dma 1781760 ou [ 161.903416][ T1024] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 161.912078][ T1024] ata1.00: status: { DRDY } [ 161.914716][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 161.918119][ T1024] ata1.00: cmd 61/00:d8:36:c1:04/20:00:00:00:00/40 tag 27 ncq dma 4194304 ou [ 161.918119][ T1024] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 161.926970][ T1024] ata1.00: status: { DRDY } [ 161.929457][ T1024] ata1: hard resetting link [ 162.247708][ T1024] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 162.255213][ T1024] ata1.00: configured for UDMA/100 [ 162.258442][ T1024] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x101000) [ 162.288050][ T1024] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 162.300173][ T1024] ata1: failed to read log page 10h (errno=-5) [ 162.309103][ T1024] ata1.00: exception Emask 0x1 SAct 0xf600 SErr 0x0 action 0x0 [ 162.317931][ T1024] ata1.00: irq_stat 0x41000000 [ 162.325879][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 162.330979][ T1024] ata1.00: cmd 61/00:48:36:c1:04/20:00:00:00:00/40 tag 9 ncq dma 4194304 ou [ 162.330979][ T1024] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 162.356360][ T1024] ata1.00: status: { DRDY } [ 162.358722][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 162.362336][ T1024] ata1.00: cmd 61/08:50:96:04:10/00:00:00:00:00/40 tag 10 ncq dma 4096 out [ 162.362336][ T1024] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 162.373865][ T1024] ata1.00: status: { DRDY } [ 162.377087][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 162.379899][ T1024] ata1.00: cmd 61/d8:60:36:e1:0b/05:00:00:00:00/40 tag 12 ncq dma 765952 out [ 162.379899][ T1024] res 50/00:01:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 162.389856][ T1024] ata1.00: status: { DRDY } [ 162.393042][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 162.396716][ T1024] ata1.00: cmd 61/c8:68:0e:e7:0b/02:00:00:00:00/40 tag 13 ncq dma 364544 out [ 162.396716][ T1024] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 162.405982][ T1024] ata1.00: status: { DRDY } [ 162.408188][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 162.411167][ T1024] ata1.00: cmd 61/08:70:d6:e9:0b/08:00:00:00:00/40 tag 14 ncq dma 1052672 ou [ 162.411167][ T1024] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 162.422667][ T1024] ata1.00: status: { DRDY } [ 162.425345][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 162.428617][ T1024] ata1.00: cmd 61/c0:78:de:f1:0b/02:00:00:00:00/40 tag 15 ncq dma 360448 out [ 162.428617][ T1024] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 162.437702][ T1024] ata1.00: status: { DRDY } [ 162.441759][ T1024] ata1.00: configured for UDMA/100 [ 162.445827][ T1024] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) [ 162.477010][ T1024] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 162.479979][ T1024] ata1: failed to read log page 10h (errno=-5) [ 162.483265][ T1024] ata1.00: exception Emask 0x1 SAct 0x8000000 SErr 0x0 action 0x0 [ 162.488253][ T1024] ata1.00: irq_stat 0x41000000 [ 162.490732][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 162.493471][ T1024] ata1.00: cmd 61/00:d8:36:81:05/20:00:00:00:00/40 tag 27 ncq dma 4194304 ou [ 162.493471][ T1024] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 162.502191][ T1024] ata1.00: status: { DRDY } [ 162.504735][ T1024] ata1.00: error: { ABRT } [ 162.509227][ T1024] ata1.00: configured for UDMA/100 [ 162.512230][ T1024] ata1: EH complete [ 164.230159][ T5322] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x1d0000) [ 169.561816][ T1024] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 169.575444][ T1024] ata1: failed to read log page 10h (errno=-5) [ 169.588814][ T1024] ata1.00: NCQ disabled due to excessive errors [ 169.602373][ T1024] ata1.00: exception Emask 0x1 SAct 0x40000000 SErr 0x0 action 0x0 [ 169.618325][ T1024] ata1.00: irq_stat 0x41000008 [ 169.626245][ T1024] ata1.00: failed command: READ FPDMA QUEUED [ 169.630231][ T1024] ata1.00: cmd 60/80:f0:36:11:05/0e:00:00:00:00/40 tag 30 ncq dma 1900544 in [ 169.630231][ T1024] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 169.647854][ T1024] ata1.00: status: { DRDY } [ 169.656708][ T1024] ata1.00: error: { ABRT } [ 169.660004][ T1024] ata1.00: configured for UDMA/100 [ 169.666388][ T1024] sd 0:0:0:0: [sda] tag#30 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 169.683441][ T1024] sd 0:0:0:0: [sda] tag#30 Sense Key : Aborted Command [current] [ 169.687608][ T1024] sd 0:0:0:0: [sda] tag#30 Add. Sense: No additional sense information [ 169.696166][ T1024] sd 0:0:0:0: [sda] tag#30 CDB: Read(10) 28 00 00 05 11 36 00 0e 80 00 [ 169.706002][ T1024] I/O error, dev sda, sector 332086 op 0x0:(READ) flags 0x80700 phys_seg 31 prio class 2 [ 169.716230][ T1024] ata1: EH complete [ 170.703685][ T5361] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 170.711173][ T5361] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 170.719128][ T5361] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 170.728571][ T5361] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 170.733268][ T5361] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 172.640272][ T5357] 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. [ 172.836159][ T5361] Bluetooth: hci0: command tx timeout [ 174.915791][ T5361] Bluetooth: hci0: command tx timeout [ 178.158863][ T185] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 178.162465][ T185] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 182.789432][ T1068] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 182.806435][ T1068] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 184.569492][ T5394] syz-executor (5394) used greatest stack depth: 16928 bytes left [ 191.819115][ T5386] chnl_net:caif_netlink_parms(): no params data found [ 198.377944][ T5386] bridge0: port 1(bridge_slave_0) entered blocking state [ 198.394751][ T5386] bridge0: port 1(bridge_slave_0) entered disabled state [ 198.406820][ T5386] bridge_slave_0: entered allmulticast mode [ 199.520591][ T5386] bridge_slave_0: entered promiscuous mode [ 199.547867][ T5386] bridge0: port 2(bridge_slave_1) entered blocking state [ 199.551222][ T5386] bridge0: port 2(bridge_slave_1) entered disabled state [ 199.559870][ T5386] bridge_slave_1: entered allmulticast mode [ 199.580844][ T5386] bridge_slave_1: entered promiscuous mode [ 200.873730][ T5386] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 200.939632][ T5386] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 201.558087][ T5386] team0: Port device team_slave_0 added [ 203.160043][ T5386] team0: Port device team_slave_1 added [ 204.435938][ T5386] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 204.452946][ T5386] 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. [ 204.530239][ T5386] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 204.596907][ T5386] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 204.627784][ T5386] 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. [ 204.726545][ T5386] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 205.387477][ T5386] hsr_slave_0: entered promiscuous mode [ 205.407522][ T5386] hsr_slave_1: entered promiscuous mode 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-build2599651154=/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 d291dd2d58a1 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=d291dd2d58a1885c00a60561048b6ceb1bf1206a -X github.com/google/syzkaller/prog.gitRevisionDate=20250903-180543" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d291dd2d58a1885c00a60561048b6ceb1bf1206a -X github.com/google/syzkaller/prog.gitRevisionDate=20250903-180543" ./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=d291dd2d58a1885c00a60561048b6ceb1bf1206a -X github.com/google/syzkaller/prog.gitRevisionDate=20250903-180543" -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=\"d291dd2d58a1885c00a60561048b6ceb1bf1206a\" /usr/bin/ld: /tmp/cc2avTRt.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