SYZFAIL: failed to recv rpc SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) Warning: Permanently added '[localhost]:52896' (ED25519) to the list of known hosts. syzkaller login: [ 91.928974][ T808] cfg80211: failed to load regulatory.db 2026/09/15 18:15:42 parsed 1 programs [ 96.908985][ T5289] cgroup: Unknown subsys name 'net' [ 96.977498][ T5289] cgroup: Unknown subsys name 'cpuset' [ 96.984929][ T5289] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 98.593582][ T5289] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 103.896686][ T5310] 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. [ 106.276408][ T181] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 106.276426][ T181] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 107.390898][ T126] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 107.390913][ T126] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 108.314906][ T5354] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 108.326035][ T5354] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 108.327079][ T5354] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 108.340349][ T5354] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 108.340745][ T5354] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 110.407805][ T4646] Bluetooth: hci0: command tx timeout [ 110.829398][ T5312] bridge0: port 1(bridge_slave_0) entered blocking state [ 110.829483][ T5312] bridge0: port 1(bridge_slave_0) entered disabled state [ 110.829664][ T5312] bridge_slave_0: entered allmulticast mode [ 110.853265][ T5312] bridge_slave_0: entered promiscuous mode [ 110.878382][ T5312] bridge0: port 2(bridge_slave_1) entered blocking state [ 110.878462][ T5312] bridge0: port 2(bridge_slave_1) entered disabled state [ 110.878569][ T5312] bridge_slave_1: entered allmulticast mode [ 110.898710][ T5312] bridge_slave_1: entered promiscuous mode [ 111.496308][ T5312] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 111.613302][ T5312] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 112.250965][ T5312] team0: Port device team_slave_0 added [ 112.549350][ T5312] team0: Port device team_slave_1 added [ 112.905431][ T5312] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 112.905447][ T5312] 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. [ 112.905462][ T5312] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 112.949693][ T5312] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 112.949710][ T5312] 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. [ 112.949724][ T5312] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 115.223944][ T5312] hsr_slave_0: entered promiscuous mode [ 115.226921][ T5312] hsr_slave_1: entered promiscuous mode [ 118.698888][ T5312] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 119.232571][ T5312] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 119.246960][ T5312] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 119.266675][ T5312] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 119.269368][ T5312] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 119.290728][ T5312] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 119.298125][ T5312] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 119.320563][ T5312] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 119.618425][ T5312] 8021q: adding VLAN 0 to HW filter on device bond0 [ 119.697259][ T5312] 8021q: adding VLAN 0 to HW filter on device team0 [ 119.733800][ T56] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.733938][ T56] bridge0: port 1(bridge_slave_0) entered forwarding state [ 120.046184][ T154] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.046258][ T154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 122.361086][ T5312] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 122.540991][ T5312] veth0_vlan: entered promiscuous mode [ 122.571610][ T5312] veth1_vlan: entered promiscuous mode [ 122.666684][ T5312] veth0_macvtap: entered promiscuous mode [ 122.681221][ T5312] veth1_macvtap: entered promiscuous mode [ 122.739433][ T5312] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 122.757059][ T5312] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 122.802952][ T12] netdevsim netdevsim2 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 122.803269][ T12] netdevsim netdevsim2 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 122.803322][ T12] netdevsim netdevsim2 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 122.912919][ T56] netdevsim netdevsim2 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 2026/09/15 18:16:12 executed programs: 0 [ 123.868617][ T5354] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 123.876318][ T5354] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 123.884389][ T5354] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 123.884943][ T5354] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 123.886193][ T5354] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 124.534897][ T5416] bridge0: port 1(bridge_slave_0) entered blocking state [ 124.535014][ T5416] bridge0: port 1(bridge_slave_0) entered disabled state [ 124.535107][ T5416] bridge_slave_0: entered allmulticast mode [ 124.537108][ T5416] bridge_slave_0: entered promiscuous mode [ 124.555121][ T5416] bridge0: port 2(bridge_slave_1) entered blocking state [ 124.555191][ T5416] bridge0: port 2(bridge_slave_1) entered disabled state [ 124.555308][ T5416] bridge_slave_1: entered allmulticast mode [ 124.557079][ T5416] bridge_slave_1: entered promiscuous mode [ 124.608153][ T5416] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 124.616599][ T5416] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 124.647047][ T5416] team0: Port device team_slave_0 added [ 124.649024][ T5416] team0: Port device team_slave_1 added [ 124.676962][ T5416] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 124.676976][ T5416] 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. [ 124.676991][ T5416] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 124.678571][ T5416] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 124.678581][ T5416] 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. [ 124.678595][ T5416] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 124.759293][ T5416] hsr_slave_0: entered promiscuous mode [ 124.760122][ T5416] hsr_slave_1: entered promiscuous mode [ 124.769151][ T5416] debugfs: 'hsr0' already exists in 'hsr' [ 124.769224][ T5416] Cannot create hsr debugfs directory [ 124.957819][ T5416] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 124.976203][ T5416] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 124.979559][ T5416] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 124.998349][ T5416] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 124.999685][ T5416] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 125.013419][ T5416] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 125.014271][ T5416] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 125.017633][ T5416] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 125.060595][ T5416] bridge0: port 2(bridge_slave_1) entered blocking state [ 125.060698][ T5416] bridge0: port 2(bridge_slave_1) entered forwarding state [ 125.061149][ T5416] bridge0: port 1(bridge_slave_0) entered blocking state [ 125.061236][ T5416] bridge0: port 1(bridge_slave_0) entered forwarding state [ 125.142187][ T5416] 8021q: adding VLAN 0 to HW filter on device bond0 [ 125.151185][ T126] bridge0: port 1(bridge_slave_0) entered disabled state [ 125.151803][ T126] bridge0: port 2(bridge_slave_1) entered disabled state [ 125.172595][ T5416] 8021q: adding VLAN 0 to HW filter on device team0 [ 125.178693][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 125.178768][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 125.207050][ T126] bridge0: port 2(bridge_slave_1) entered blocking state [ 125.207120][ T126] bridge0: port 2(bridge_slave_1) entered forwarding state [ 125.605372][ T5416] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 125.657868][ T5416] veth0_vlan: entered promiscuous mode [ 125.667709][ T5416] veth1_vlan: entered promiscuous mode [ 125.703173][ T5416] veth0_macvtap: entered promiscuous mode [ 125.707861][ T5416] veth1_macvtap: entered promiscuous mode [ 125.729840][ T5416] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 125.748045][ T5416] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 125.832600][ T154] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 125.838333][ T154] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 125.874738][ T154] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 125.874770][ T154] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 125.904728][ T56] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 125.904746][ T56] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 125.922485][ T4646] Bluetooth: hci0: command tx timeout [ 125.964660][ T56] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 125.964678][ T56] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) [ 126.315949][ T5312] syz-executor (5312) used greatest stack depth: 16640 bytes left [ 127.580652][ T126] netdevsim netdevsim2 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 127.697420][ T126] netdevsim netdevsim2 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 127.755445][ T126] netdevsim netdevsim2 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 127.798155][ T126] netdevsim netdevsim2 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 128.061456][ T126] bridge_slave_1: left allmulticast mode [ 128.061498][ T126] bridge_slave_1: left promiscuous mode [ 128.070565][ T126] bridge0: port 2(bridge_slave_1) entered disabled state [ 128.094428][ T126] bridge_slave_0: left allmulticast mode [ 128.094450][ T126] bridge_slave_0: left promiscuous mode [ 128.094610][ T126] bridge0: port 1(bridge_slave_0) entered disabled state [ 128.628831][ T126] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 128.640935][ T126] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 128.648419][ T126] bond0 (unregistering): Released all slaves [ 128.855804][ T126] hsr_slave_0: left promiscuous mode [ 128.864476][ T126] hsr_slave_1: left promiscuous mode [ 128.873058][ T126] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 128.873109][ T126] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 128.876917][ T126] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 128.876932][ T126] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 128.947099][ T126] veth1_macvtap: left promiscuous mode [ 128.947260][ T126] veth0_macvtap: left promiscuous mode [ 128.947403][ T126] veth1_vlan: left promiscuous mode [ 128.947517][ T126] veth0_vlan: left promiscuous mode [ 129.678807][ T126] team0 (unregistering): Port device team_slave_1 removed [ 129.695273][ T126] team0 (unregistering): Port device team_slave_0 removed [ 129.808243][ T4992] 8021q: adding VLAN 0 to HW filter on device eth2 [ 130.225164][ T126] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 130.316623][ T126] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 130.374195][ T126] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 130.414484][ T4992] 8021q: adding VLAN 0 to HW filter on device eth3 [ 130.435782][ T126] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 130.629755][ T126] bridge_slave_1: left allmulticast mode [ 130.629777][ T126] bridge_slave_1: left promiscuous mode [ 130.629924][ T126] bridge0: port 2(bridge_slave_1) entered disabled state [ 130.648250][ T126] bridge_slave_0: left allmulticast mode [ 130.648271][ T126] bridge_slave_0: left promiscuous mode [ 130.648412][ T126] bridge0: port 1(bridge_slave_0) entered disabled state [ 130.946105][ T126] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 130.949735][ T126] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 130.966972][ T126] bond0 (unregistering): Released all slaves [ 130.979008][ T4992] 8021q: adding VLAN 0 to HW filter on device eth4 [ 131.205750][ T126] hsr_slave_0: left promiscuous mode [ 131.207059][ T126] hsr_slave_1: left promiscuous mode [ 131.207825][ T126] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 131.207840][ T126] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 131.208387][ T126] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 131.208398][ T126] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 131.241680][ T126] veth1_macvtap: left promiscuous mode [ 131.251575][ T126] veth0_macvtap: left promiscuous mode [ 131.251682][ T126] veth1_vlan: left promiscuous mode [ 131.258104][ T126] veth0_vlan: left promiscuous mode [ 131.635703][ T126] team0 (unregistering): Port device team_slave_1 removed [ 131.649840][ T126] team0 (unregistering): Port device team_slave_0 removed [ 131.779720][ T4992] 8021q: adding VLAN 0 to HW filter on device eth5 [ 132.121165][ T4992] 8021q: adding VLAN 0 to HW filter on device eth6 [ 132.369202][ T4992] 8021q: adding VLAN 0 to HW filter on device eth7 [ 132.579079][ T4992] 8021q: adding VLAN 0 to HW filter on device eth8 [ 132.831171][ T4992] 8021q: adding VLAN 0 to HW filter on device eth9 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-build2631836688=/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 d1b870e1003 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=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" ./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=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" -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=\"d1b870e1003b52891d2196c1e2ee42fe905010ba\" /usr/bin/ld: /tmp/ccNZbHYJ.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