lost connection to test machine syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x100000) Warning: Permanently added '[localhost]:33195' (ED25519) to the list of known hosts. 2026/08/13 15:25:21 parsed 1 programs [ 89.986713][ T5286] cgroup: Unknown subsys name 'net' [ 90.052187][ T5286] cgroup: Unknown subsys name 'cpuset' [ 90.060065][ T5286] cgroup: Unknown subsys name 'rlimit' [ 91.835083][ T933] cfg80211: failed to load regulatory.db [ 110.406789][ T1022] ata1.00: exception Emask 0x0 SAct 0x40000000 SErr 0x0 action 0x6 frozen [ 110.410541][ T1022] ata1.00: failed command: WRITE FPDMA QUEUED [ 110.413183][ T1022] ata1.00: cmd 61/00:f0:5e:5b:04/08:00:00:00:00/40 tag 30 ncq dma 1048576 ou [ 110.413183][ T1022] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 110.420786][ T1022] ata1.00: status: { DRDY } [ 110.423900][ T1022] ata1: hard resetting link [ 110.747457][ T1022] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 110.753757][ T1022] ata1.00: configured for UDMA/100 [ 110.757249][ T1022] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) [ 137.910833][ T1325] ieee802154 phy0 wpan0: encryption failed: -22 [ 137.914515][ T1325] ieee802154 phy1 wpan1: encryption failed: -22 [ 141.126677][ T1022] ata1.00: exception Emask 0x0 SAct 0x200000 SErr 0x0 action 0x6 frozen [ 141.130139][ T1022] ata1.00: failed command: WRITE FPDMA QUEUED [ 141.132705][ T1022] ata1.00: cmd 61/00:a8:56:31:05/20:00:00:00:00/40 tag 21 ncq dma 4194304 ou [ 141.132705][ T1022] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 141.140303][ T1022] ata1.00: status: { DRDY } [ 141.142391][ T1022] ata1: hard resetting link [ 141.458996][ T1022] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 141.463328][ T1022] ata1.00: configured for UDMA/100 [ 141.466080][ T1022] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) [ 141.480304][ T5286] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 141.497810][ T1022] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 141.500818][ T1022] ata1: failed to read log page 10h (errno=-5) [ 141.503541][ T1022] ata1.00: exception Emask 0x1 SAct 0x800020 SErr 0x0 action 0x0 [ 141.517336][ T1022] ata1.00: irq_stat 0x41000000 [ 141.519594][ T1022] ata1.00: failed command: WRITE FPDMA QUEUED [ 141.522419][ T1022] ata1.00: cmd 61/00:28:56:31:05/20:00:00:00:00/40 tag 5 ncq dma 4194304 ou [ 141.522419][ T1022] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 141.546529][ T1022] ata1.00: status: { DRDY } [ 141.549069][ T1022] ata1.00: failed command: WRITE FPDMA QUEUED [ 141.552753][ T1022] ata1.00: cmd 61/b0:b8:3e:05:0c/02:00:00:00:00/40 tag 23 ncq dma 352256 out [ 141.552753][ T1022] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 141.576745][ T1022] ata1.00: status: { DRDY } [ 141.579995][ T1022] ata1.00: configured for UDMA/100 [ 141.582751][ T1022] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) [ 141.678266][ T1022] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 141.686586][ T1022] ata1: failed to read log page 10h (errno=-5) [ 141.690100][ T1022] ata1.00: NCQ disabled due to excessive errors [ 141.697062][ T1022] ata1.00: exception Emask 0x1 SAct 0x3000000 SErr 0x0 action 0x0 [ 141.707123][ T1022] ata1.00: irq_stat 0x41000000 [ 141.709852][ T1022] ata1.00: failed command: WRITE FPDMA QUEUED [ 141.716521][ T1022] ata1.00: cmd 61/00:c0:56:51:05/20:00:00:00:00/40 tag 24 ncq dma 4194304 ou [ 141.716521][ T1022] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 141.736515][ T1022] ata1.00: status: { DRDY } [ 141.738667][ T1022] ata1.00: failed command: WRITE FPDMA QUEUED [ 141.741351][ T1022] ata1.00: cmd 61/00:c8:56:71:05/20:00:00:00:00/40 tag 25 ncq dma 4194304 ou [ 141.741351][ T1022] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 141.756496][ T1022] ata1.00: status: { DRDY } [ 141.761324][ T1022] ata1.00: configured for UDMA/100 [ 141.768153][ T1022] ata1: EH complete [ 147.493428][ T5316] 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. [ 150.532935][ T30] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 150.543592][ T30] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 150.580551][ T41] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 150.584770][ T41] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 153.648785][ T5376] bridge0: port 1(bridge_slave_0) entered blocking state [ 153.654110][ T5376] bridge0: port 1(bridge_slave_0) entered disabled state [ 153.667400][ T5376] bridge_slave_0: entered allmulticast mode [ 153.673217][ T5376] bridge_slave_0: entered promiscuous mode [ 153.690570][ T5376] bridge0: port 2(bridge_slave_1) entered blocking state [ 153.694540][ T5376] bridge0: port 2(bridge_slave_1) entered disabled state [ 153.699137][ T5376] bridge_slave_1: entered allmulticast mode [ 153.708318][ T5376] bridge_slave_1: entered promiscuous mode [ 153.761628][ T5376] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 153.778871][ T5376] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 153.820389][ T5376] team0: Port device team_slave_0 added [ 153.829152][ T5376] team0: Port device team_slave_1 added [ 153.879156][ T5376] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 153.886743][ T5376] 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. [ 153.916624][ T5376] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 153.923990][ T5376] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 153.928997][ T5376] 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. [ 153.941419][ T5376] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 153.978294][ T5376] hsr_slave_0: entered promiscuous mode [ 153.981608][ T5376] hsr_slave_1: entered promiscuous mode [ 154.289366][ T5376] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 154.312493][ T5376] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 154.320641][ T5376] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 154.341922][ T5376] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 154.357649][ T5376] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 154.364399][ T5376] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 154.377537][ T5376] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 154.389093][ T5376] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 154.469325][ T5376] bridge0: port 2(bridge_slave_1) entered blocking state [ 154.472957][ T5376] bridge0: port 2(bridge_slave_1) entered forwarding state [ 154.609462][ T5376] 8021q: adding VLAN 0 to HW filter on device bond0 [ 154.624489][ T41] bridge0: port 2(bridge_slave_1) entered disabled state [ 154.659923][ T5376] 8021q: adding VLAN 0 to HW filter on device team0 [ 154.675024][ T41] bridge0: port 1(bridge_slave_0) entered blocking state [ 154.678138][ T41] bridge0: port 1(bridge_slave_0) entered forwarding state [ 154.707531][ T41] bridge0: port 2(bridge_slave_1) entered blocking state [ 154.710641][ T41] bridge0: port 2(bridge_slave_1) entered forwarding state [ 155.092517][ T5376] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 155.185747][ T5376] veth0_vlan: entered promiscuous mode [ 155.208027][ T5376] veth1_vlan: entered promiscuous mode [ 155.279456][ T5376] veth0_macvtap: entered promiscuous mode [ 155.293074][ T5376] veth1_macvtap: entered promiscuous mode [ 155.322868][ T5376] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 155.334460][ T5376] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 155.379693][ T30] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 155.416853][ T30] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 155.428427][ T30] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 155.437729][ T30] netdevsim netdevsim0 netdevsim1: 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-build3438582592=/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 e18aa5057f 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=e18aa5057febfc3f9f61c8755234e361528def0e -X github.com/google/syzkaller/prog.gitRevisionDate=20251017-065120" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=e18aa5057febfc3f9f61c8755234e361528def0e -X github.com/google/syzkaller/prog.gitRevisionDate=20251017-065120" ./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=e18aa5057febfc3f9f61c8755234e361528def0e -X github.com/google/syzkaller/prog.gitRevisionDate=20251017-065120" -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=\"e18aa5057febfc3f9f61c8755234e361528def0e\" /usr/bin/ld: /tmp/ccyKmwvk.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