lost connection to test machine syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0xdb000) Warning: Permanently added '[localhost]:55035' (ED25519) to the list of known hosts. 2026/06/05 21:22:40 parsed 1 programs [ 97.102199][ T10] cfg80211: failed to load regulatory.db [ 99.208969][ T5298] cgroup: Unknown subsys name 'net' [ 99.262276][ T5298] cgroup: Unknown subsys name 'cpuset' [ 99.269528][ T5298] cgroup: Unknown subsys name 'rlimit' [ 143.169217][ T1332] ieee802154 phy0 wpan0: encryption failed: -22 [ 143.173006][ T1332] ieee802154 phy1 wpan1: encryption failed: -22 [ 151.506657][ T1028] ata1.00: exception Emask 0x0 SAct 0x4000 SErr 0x0 action 0x6 frozen [ 151.511253][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 151.514681][ T1028] ata1.00: cmd 61/d8:70:de:5a:04/06:00:00:00:00/40 tag 14 ncq dma 897024 out [ 151.514681][ T1028] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 151.524211][ T1028] ata1.00: status: { DRDY } [ 151.527204][ T1028] ata1: hard resetting link [ 151.847891][ T1028] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 151.854232][ T1028] ata1.00: configured for UDMA/100 [ 151.858324][ T1028] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) [ 151.914050][ T1028] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 151.927445][ T1028] ata1: failed to read log page 10h (errno=-5) [ 151.945377][ T1028] ata1.00: exception Emask 0x1 SAct 0x780000 SErr 0x0 action 0x0 [ 151.957394][ T1028] ata1.00: irq_stat 0x41000000 [ 151.966378][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 151.977453][ T1028] ata1.00: cmd 61/00:98:36:01:05/20:00:00:00:00/40 tag 19 ncq dma 4194304 ou [ 151.977453][ T1028] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 152.001545][ T1028] ata1.00: status: { DRDY } [ 152.008642][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 152.019688][ T1028] ata1.00: cmd 61/00:a0:36:21:05/20:00:00:00:00/40 tag 20 ncq dma 4194304 ou [ 152.019688][ T1028] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 152.046147][ T1028] ata1.00: status: { DRDY } [ 152.048950][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 152.052561][ T1028] ata1.00: cmd 61/00:a8:36:41:05/20:00:00:00:00/40 tag 21 ncq dma 4194304 ou [ 152.052561][ T1028] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 152.079208][ T1028] ata1.00: status: { DRDY } [ 152.086292][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 152.089299][ T1028] ata1.00: cmd 61/d8:b0:36:61:05/0e:00:00:00:00/40 tag 22 ncq dma 1945600 ou [ 152.089299][ T1028] res 50/00:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 152.116073][ T1028] ata1.00: status: { DRDY } [ 152.119475][ T1028] ata1.00: configured for UDMA/100 [ 152.124370][ T1028] ata1: EH complete qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than the requested size (0x400000) [ 152.157112][ T1028] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 152.159995][ T1028] ata1: failed to read log page 10h (errno=-5) [ 152.162724][ T1028] ata1.00: NCQ disabled due to excessive errors [ 152.166924][ T1028] ata1.00: exception Emask 0x1 SAct 0x40000001 SErr 0x0 action 0x0 [ 152.171885][ T1028] ata1.00: irq_stat 0x41000008 [ 152.174069][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 152.177879][ T1028] ata1.00: cmd 61/00:00:36:21:05/20:00:00:00:00/40 tag 0 ncq dma 4194304 ou [ 152.177879][ T1028] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 152.185346][ T1028] ata1.00: status: { DRDY } [ 152.187847][ T1028] ata1.00: error: { ABRT } [ 152.190130][ T1028] ata1.00: failed command: WRITE FPDMA QUEUED [ 152.194345][ T1028] ata1.00: cmd 61/00:f0:36:01:05/20:00:00:00:00/40 tag 30 ncq dma 4194304 ou [ 152.194345][ T1028] res 50/04:00:00:00:00/00:00:00:00:00/00 Emask 0x1 (device error) [ 152.203952][ T1028] ata1.00: status: { DRDY } [ 152.206229][ T1028] ata1.00: error: { ABRT } [ 152.209236][ T1028] ata1.00: configured for UDMA/100 [ 152.211964][ T1028] ata1: EH complete [ 154.721963][ T5298] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 158.612328][ T5340] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 158.623955][ T5340] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 158.630486][ T5340] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 158.638074][ T5340] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 158.641685][ T5340] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 160.271019][ T5339] 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. [ 160.688259][ T4656] Bluetooth: hci0: command tx timeout [ 162.766249][ T4656] Bluetooth: hci0: command tx timeout [ 169.210770][ T13] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 169.239310][ T13] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 173.229178][ T1058] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 173.242132][ T1058] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 176.316196][ T5374] bridge0: port 1(bridge_slave_0) entered blocking state [ 176.326583][ T5374] bridge0: port 1(bridge_slave_0) entered disabled state [ 176.338110][ T5374] bridge_slave_0: entered allmulticast mode [ 176.627641][ T5374] bridge_slave_0: entered promiscuous mode [ 177.219731][ T5374] bridge0: port 2(bridge_slave_1) entered blocking state [ 177.229146][ T5374] bridge0: port 2(bridge_slave_1) entered disabled state [ 177.236498][ T5374] bridge_slave_1: entered allmulticast mode [ 177.311053][ T5374] bridge_slave_1: entered promiscuous mode [ 178.033063][ T5374] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 178.057036][ T5374] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 178.627019][ T5374] team0: Port device team_slave_0 added [ 178.858718][ T5374] team0: Port device team_slave_1 added [ 178.916836][ T5374] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 178.919931][ T5374] 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. [ 178.951624][ T5374] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 179.171628][ T5374] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 179.177623][ T5374] 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. [ 179.212383][ T5374] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 180.431111][ T5374] hsr_slave_0: entered promiscuous mode [ 180.448271][ T5374] hsr_slave_1: entered promiscuous mode [ 183.405431][ T5374] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 183.470110][ T5374] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 183.488204][ T5374] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 183.520368][ T5374] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 183.537238][ T5374] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 183.686092][ T5374] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 183.689475][ T5374] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 183.711060][ T5374] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 192.902202][ T5374] 8021q: adding VLAN 0 to HW filter on device bond0 [ 193.004365][ T5374] 8021q: adding VLAN 0 to HW filter on device team0 [ 193.050324][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 193.054627][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 193.192427][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 193.195475][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 194.830302][ T5374] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 195.421269][ T5374] veth0_vlan: entered promiscuous mode [ 195.454547][ T5374] veth1_vlan: entered promiscuous mode [ 195.567048][ T5374] veth0_macvtap: entered promiscuous mode [ 195.598718][ T5374] veth1_macvtap: entered promiscuous mode [ 195.663934][ T5374] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 195.712578][ T5374] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 195.759409][ T1159] netdevsim netdevsim4 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 195.787112][ T1159] netdevsim netdevsim4 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 195.854610][ T1159] netdevsim netdevsim4 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 195.867232][ T1159] netdevsim netdevsim4 netdevsim3: set [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-build589207804=/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 ef44b750e8fa 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=ef44b750e8fab8d6d5cb84920680581b13e0d470 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20250207-152458'" -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=\"ef44b750e8fab8d6d5cb84920680581b13e0d470\" /usr/bin/ld: /tmp/cckQbqEb.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