lost connection to test machine syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x10c000) Warning: Permanently added '[localhost]:52057' (ED25519) to the list of known hosts. [ 102.256274][ T10] cfg80211: failed to load regulatory.db 2026/04/20 15:49:18 parsed 1 programs [ 107.118793][ T5327] cgroup: Unknown subsys name 'net' [ 107.177226][ T5327] cgroup: Unknown subsys name 'cpuset' [ 107.187921][ T5327] cgroup: Unknown subsys name 'rlimit' [ 148.336602][ T1328] ieee802154 phy0 wpan0: encryption failed: -22 [ 148.341393][ T1328] ieee802154 phy1 wpan1: encryption failed: -22 [ 157.308642][ T1025] ata1.00: exception Emask 0x0 SAct 0x4000 SErr 0x0 action 0x6 frozen [ 157.312936][ T1025] ata1.00: failed command: WRITE FPDMA QUEUED [ 157.315913][ T1025] ata1.00: cmd 61/60:70:3e:4d:04/08:00:00:00:00/40 tag 14 ncq dma 1097728 ou [ 157.315913][ T1025] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 157.324044][ T1025] ata1.00: status: { DRDY } [ 157.328031][ T1025] ata1: hard resetting link [ 157.651452][ T1025] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 157.656172][ T1025] ata1.00: configured for UDMA/100 [ 157.659813][ T1025] ata1: EH complete [ 159.966743][ T5327] 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 (0x400000) [ 162.909451][ T1025] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 162.912381][ T1025] ata1: failed to read log page 10h (errno=-5) [ 162.926192][ T1025] ata1.00: NCQ disabled due to excessive errors [ 162.941878][ T1025] ata1.00: exception Emask 0x1 SAct 0x40000001 SErr 0x0 action 0x0 [ 162.959881][ T1025] ata1.00: irq_stat 0x41000000 [ 162.968481][ T1025] ata1.00: failed command: WRITE FPDMA QUEUED [ 162.974252][ T1025] ata1.00: cmd 61/e0:00:36:a1:05/06:00:00:00:00/40 tag 0 ncq dma 901120 out [ 162.974252][ T1025] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 163.008009][ T1025] ata1.00: status: { DRDY } [ 163.018334][ T1025] ata1.00: failed command: WRITE FPDMA QUEUED [ 163.021245][ T1025] ata1.00: cmd 61/00:f0:36:81:05/20:00:00:00:00/40 tag 30 ncq dma 4194304 ou [ 163.021245][ T1025] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 163.041369][ T1025] ata1.00: status: { DRDY } [ 163.055014][ T1025] ata1.00: configured for UDMA/100 [ 163.070531][ T1025] ata1: EH complete [ 167.809779][ 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. [ 170.019170][ T180] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 170.037527][ T180] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 170.120059][ T180] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 170.124865][ T180] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 175.860268][ T5413] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 175.866252][ T5413] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 175.872501][ T5413] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 175.883777][ T5413] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 175.889314][ T5413] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 177.107604][ T5420] chnl_net:caif_netlink_parms(): no params data found [ 177.194705][ T5420] bridge0: port 1(bridge_slave_0) entered blocking state [ 177.200147][ T5420] bridge0: port 1(bridge_slave_0) entered disabled state [ 177.203323][ T5420] bridge_slave_0: entered allmulticast mode [ 177.207714][ T5420] bridge_slave_0: entered promiscuous mode [ 177.217588][ T5420] bridge0: port 2(bridge_slave_1) entered blocking state [ 177.221626][ T5420] bridge0: port 2(bridge_slave_1) entered disabled state [ 177.227564][ T5420] bridge_slave_1: entered allmulticast mode [ 177.232772][ T5420] bridge_slave_1: entered promiscuous mode [ 177.265390][ T5420] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 177.273173][ T5420] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 177.305222][ T5420] team0: Port device team_slave_0 added [ 177.311059][ T5420] team0: Port device team_slave_1 added [ 177.338030][ T5420] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 177.342464][ T5420] 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. [ 177.354930][ T5420] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 177.364092][ T5420] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 177.367596][ T5420] 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. [ 177.381902][ T5420] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 177.431209][ T5420] hsr_slave_0: entered promiscuous mode [ 177.435092][ T5420] hsr_slave_1: entered promiscuous mode [ 177.666918][ T5420] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 177.681679][ T5420] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 177.686659][ T5420] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 177.694549][ T5420] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 177.704191][ T5420] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 177.716079][ T5420] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 177.721588][ T5420] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 177.727889][ T5420] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 177.770167][ T5420] bridge0: port 2(bridge_slave_1) entered blocking state [ 177.774483][ T5420] bridge0: port 2(bridge_slave_1) entered forwarding state [ 177.779368][ T5420] bridge0: port 1(bridge_slave_0) entered blocking state [ 177.783205][ T5420] bridge0: port 1(bridge_slave_0) entered forwarding state [ 177.875383][ T5420] 8021q: adding VLAN 0 to HW filter on device bond0 [ 177.900148][ T180] bridge0: port 1(bridge_slave_0) entered disabled state [ 177.905931][ T180] bridge0: port 2(bridge_slave_1) entered disabled state [ 177.923963][ T5420] 8021q: adding VLAN 0 to HW filter on device team0 [ 177.941213][ T68] bridge0: port 1(bridge_slave_0) entered blocking state [ 177.945116][ T68] bridge0: port 1(bridge_slave_0) entered forwarding state [ 177.961510][ T180] bridge0: port 2(bridge_slave_1) entered blocking state [ 177.965058][ T180] bridge0: port 2(bridge_slave_1) entered forwarding state [ 178.236594][ T5420] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 178.300738][ T5420] veth0_vlan: entered promiscuous mode [ 178.314723][ T5420] veth1_vlan: entered promiscuous mode [ 178.361382][ T5420] veth0_macvtap: entered promiscuous mode [ 178.371948][ T5420] veth1_macvtap: entered promiscuous mode [ 178.399900][ T5420] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 178.424853][ T5420] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 178.444407][ T12] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 178.459986][ T12] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 178.483327][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 178.512643][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 178.895592][ T12] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 178.992623][ T12] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 179.045401][ T12] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 179.114717][ T12] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 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-build2213088615=/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 e28266709dd2 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=e28266709dd2a1d1452d4a5bbf271700e10335c6 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250313-150626'" -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=\"e28266709dd2a1d1452d4a5bbf271700e10335c6\" /usr/bin/ld: /tmp/ccF26YZg.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