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) [ 91.464556][ T1024] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 91.464599][ T1024] ata1: failed to read log page 10h (errno=-5) [ 91.464613][ T1024] ata1.00: exception Emask 0x1 SAct 0x300 SErr 0x0 action 0x0 [ 91.464625][ T1024] ata1.00: irq_stat 0x41000000 [ 91.464636][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 91.464643][ T1024] ata1.00: cmd 61/00:40:36:e1:04/20:00:00:00:00/40 tag 8 ncq dma 4194304 ou [ 91.464643][ T1024] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 91.464672][ T1024] ata1.00: status: { DRDY } [ 91.464681][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 91.464687][ T1024] ata1.00: cmd 61/00:48:36:01:05/20:00:00:00:00/40 tag 9 ncq dma 4194304 ou [ 91.464687][ T1024] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 91.464716][ T1024] ata1.00: status: { DRDY } [ 91.466837][ T1024] ata1.00: configured for UDMA/100 [ 91.468709][ T1024] ata1: EH complete Warning: Permanently added '[localhost]:50710' (ED25519) to the list of known hosts. 2026/10/06 23:24:32 parsed 1 programs 2026/10/06 23:24:32 serving rpc on tcp://39819 [ 97.038340][ T5292] cgroup: Unknown subsys name 'net' [ 97.109751][ T5292] cgroup: Unknown subsys name 'cpuset' [ 97.117230][ T5292] cgroup: Unknown subsys name 'rlimit' [ 97.169595][ T807] cfg80211: failed to load regulatory.db Setting up swapspace version 1, size = 127995904 bytes [ 98.973760][ T5292] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 104.337091][ T46] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 104.341710][ T46] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 104.360120][ T46] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 104.370006][ T46] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 104.376570][ T46] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) [ 104.809243][ T1024] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 104.809265][ T1024] ata1: failed to read log page 10h (errno=-5) [ 104.809279][ T1024] ata1.00: exception Emask 0x1 SAct 0x800 SErr 0x0 action 0x0 [ 104.809289][ T1024] ata1.00: irq_stat 0x41000008 [ 104.809299][ T1024] ata1.00: failed command: WRITE FPDMA QUEUED [ 104.809306][ T1024] ata1.00: cmd 61/00:58:36:61:0c/20:00:00:00:00/40 tag 11 ncq dma 4194304 ou [ 104.809306][ T1024] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 104.809341][ T1024] ata1.00: status: { DRDY } [ 104.809348][ T1024] ata1.00: error: { ABRT } [ 104.840421][ T1024] ata1.00: configured for UDMA/100 [ 104.850409][ T1024] ata1: EH complete [ 106.443910][ T46] Bluetooth: hci0: command tx timeout [ 106.488840][ T5317] soft_limit_in_bytes is deprecated and will be removed. Writing any value to this file has no effect. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 106.704103][ T39] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 106.704120][ T39] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 107.017623][ T39] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 107.017643][ T39] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 108.522794][ T46] Bluetooth: hci0: command tx timeout [ 110.604956][ T46] Bluetooth: hci0: command tx timeout [ 126.974588][ T5349] bridge0: port 1(bridge_slave_0) entered blocking state [ 126.974684][ T5349] bridge0: port 1(bridge_slave_0) entered disabled state [ 126.974820][ T5349] bridge_slave_0: entered allmulticast mode [ 126.980791][ T5349] bridge_slave_0: entered promiscuous mode [ 127.061670][ T5349] bridge0: port 2(bridge_slave_1) entered blocking state [ 127.061741][ T5349] bridge0: port 2(bridge_slave_1) entered disabled state [ 127.061865][ T5349] bridge_slave_1: entered allmulticast mode [ 127.093823][ T5349] bridge_slave_1: entered promiscuous mode [ 127.241041][ T5349] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 127.290490][ T5349] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 127.565365][ T5349] team0: Port device team_slave_0 added [ 128.080511][ T5349] team0: Port device team_slave_1 added [ 128.262436][ T5349] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 128.262451][ T5349] 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. [ 128.262467][ T5349] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 128.315892][ T5349] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 128.315906][ T5349] 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. [ 128.315921][ T5349] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 129.391598][ T5349] hsr_slave_0: entered promiscuous mode [ 129.398021][ T5349] hsr_slave_1: entered promiscuous mode [ 130.698735][ T5349] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 130.771552][ T5349] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 130.778903][ T5349] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 130.807309][ T5349] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 130.810161][ T5349] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 130.832326][ T5349] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 130.838652][ T5349] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 130.858277][ T5349] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 131.234492][ T5349] 8021q: adding VLAN 0 to HW filter on device bond0 [ 131.316654][ T5349] 8021q: adding VLAN 0 to HW filter on device team0 [ 131.350862][ T90] bridge0: port 1(bridge_slave_0) entered blocking state [ 131.350990][ T90] bridge0: port 1(bridge_slave_0) entered forwarding state [ 131.400353][ T90] bridge0: port 2(bridge_slave_1) entered blocking state [ 131.400777][ T90] bridge0: port 2(bridge_slave_1) entered forwarding state qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x179000) [ 132.176393][ T1024] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 132.176414][ T1024] ata1: failed to read log page 10h (errno=-5) [ 132.176427][ T1024] ata1.00: NCQ disabled due to excessive errors [ 132.176435][ T1024] ata1.00: exception Emask 0x1 SAct 0x1800 SErr 0x0 action 0x0 [ 132.176446][ T1024] ata1.00: irq_stat 0x41000000 [ 132.176457][ T1024] ata1.00: failed command: READ FPDMA QUEUED [ 132.176464][ T1024] ata1.00: cmd 60/c8:58:de:8a:04/0b:00:00:00:00/40 tag 11 ncq dma 1544192 in [ 132.176464][ T1024] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 132.176495][ T1024] ata1.00: status: { DRDY } [ 132.176505][ T1024] ata1.00: failed command: READ FPDMA QUEUED [ 132.176512][ T1024] ata1.00: cmd 60/40:60:a6:96:04/07:00:00:00:00/40 tag 12 ncq dma 950272 in [ 132.176512][ T1024] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 132.176543][ T1024] ata1.00: status: { DRDY } [ 132.176550][ T1024] ata1.00: error: { ABRT } [ 132.179993][ T1024] ata1.00: configured for UDMA/100 [ 132.182171][ T1024] sd 0:0:0:0: [sda] tag#11 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 132.182203][ T1024] sd 0:0:0:0: [sda] tag#11 Sense Key : Aborted Command [current] [ 132.182228][ T1024] sd 0:0:0:0: [sda] tag#11 Add. Sense: No additional sense information [ 132.182251][ T1024] sd 0:0:0:0: [sda] tag#11 CDB: Read(10) 28 00 00 04 8a de 00 0b c8 00 [ 132.182267][ T1024] I/O error, dev sda, sector 297694 op 0x0:(READ) flags 0x84700 phys_seg 168 prio class 2 [ 132.256562][ T1024] sd 0:0:0:0: [sda] tag#12 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s [ 132.256598][ T1024] sd 0:0:0:0: [sda] tag#12 Sense Key : Aborted Command [current] [ 132.256626][ T1024] sd 0:0:0:0: [sda] tag#12 Add. Sense: No additional sense information [ 132.256649][ T1024] sd 0:0:0:0: [sda] tag#12 CDB: Read(10) 28 00 00 04 96 a6 00 07 40 00 [ 132.256663][ T1024] I/O error, dev sda, sector 300710 op 0x0:(READ) flags 0x84700 phys_seg 88 prio class 2 [ 132.256895][ T1024] ata1: EH complete [ 133.489070][ T5349] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 133.737875][ T5349] veth0_vlan: entered promiscuous mode [ 133.760498][ T5349] veth1_vlan: entered promiscuous mode [ 133.896164][ T5349] veth0_macvtap: entered promiscuous mode [ 133.925550][ T5349] veth1_macvtap: entered promiscuous mode [ 134.014014][ T5349] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 134.040795][ T5349] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 134.114304][ T90] netdevsim netdevsim3 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 134.268963][ T12] netdevsim netdevsim3 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 134.269293][ T12] netdevsim netdevsim3 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 134.269317][ T12] netdevsim netdevsim3 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 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-build2521398061=/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 f41e228a2e7 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=f41e228a2e7b883d75a56aa602070c9893ccb54c -X github.com/google/syzkaller/prog.gitRevisionDate=20260915-092900" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=f41e228a2e7b883d75a56aa602070c9893ccb54c -X github.com/google/syzkaller/prog.gitRevisionDate=20260915-092900" ./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=f41e228a2e7b883d75a56aa602070c9893ccb54c -X github.com/google/syzkaller/prog.gitRevisionDate=20260915-092900" -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=\"f41e228a2e7b883d75a56aa602070c9893ccb54c\" /usr/bin/ld: /tmp/ccgDAct9.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