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 '10.128.0.21' (ED25519) to the list of known hosts. 2026/06/16 06:21:21 parsed 1 programs [ 24.703411][ T30] audit: type=1400 audit(1781590881.659:64): avc: denied { node_bind } for pid=293 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 24.724196][ T30] audit: type=1400 audit(1781590881.659:65): avc: denied { module_request } for pid=293 comm="syz-execprog" kmod="net-pf-2-proto-262-type-1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1 [ 25.369899][ T30] audit: type=1400 audit(1781590882.329:66): avc: denied { mounton } for pid=301 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 25.371086][ T301] cgroup: Unknown subsys name 'net' [ 25.392589][ T30] audit: type=1400 audit(1781590882.329:67): avc: denied { mount } for pid=301 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 25.419928][ T30] audit: type=1400 audit(1781590882.359:68): avc: denied { unmount } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 25.420186][ T301] cgroup: Unknown subsys name 'devices' [ 25.506522][ T301] cgroup: Unknown subsys name 'hugetlb' [ 25.512134][ T301] cgroup: Unknown subsys name 'rlimit' [ 25.657026][ T30] audit: type=1400 audit(1781590882.619:69): avc: denied { setattr } for pid=301 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=254 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 25.680326][ T30] audit: type=1400 audit(1781590882.619:70): avc: denied { create } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.686164][ T304] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.701115][ T30] audit: type=1400 audit(1781590882.619:71): avc: denied { write } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.729978][ T30] audit: type=1400 audit(1781590882.619:72): avc: denied { read } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 Setting up swapspace version 1, size = 127995904 bytes [ 25.750320][ T30] audit: type=1400 audit(1781590882.619:73): avc: denied { mounton } for pid=301 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 25.771641][ T301] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.254258][ T310] request_module fs-gadgetfs succeeded, but still no fs? [ 26.425404][ T310] syz-executor (310) used greatest stack depth: 21280 bytes left [ 26.742658][ T337] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.751557][ T337] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.759234][ T337] device bridge_slave_0 entered promiscuous mode [ 26.768933][ T337] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.776058][ T337] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.784843][ T337] device bridge_slave_1 entered promiscuous mode [ 26.883143][ T337] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.890270][ T337] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.897742][ T337] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.904809][ T337] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.942374][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.950699][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.958601][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.975537][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.983871][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.990978][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.998955][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.008003][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.015116][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.022741][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.042744][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.052748][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.064596][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.072614][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.080168][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready 2026/06/16 06:21:24 executed programs: 0 [ 27.088642][ T337] device veth0_vlan entered promiscuous mode [ 27.098126][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.107392][ T337] device veth1_macvtap entered promiscuous mode [ 27.116670][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.126963][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.187638][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.194823][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.202255][ T370] device bridge_slave_0 entered promiscuous mode [ 27.209271][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.216414][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.223723][ T370] device bridge_slave_1 entered promiscuous mode [ 27.262577][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.269641][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.276933][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.283982][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.302132][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.309892][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.317449][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.333458][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.341749][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.349010][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.357908][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.366145][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.373148][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.390254][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 27.398461][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.407617][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 27.416115][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.433083][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 27.441526][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.452281][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 27.460300][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.469027][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.476616][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.484904][ T370] device veth0_vlan entered promiscuous mode [ 27.498939][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 27.507171][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.516282][ T370] device veth1_macvtap entered promiscuous mode [ 27.525307][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 27.533071][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 27.541708][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.551111][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 27.559509][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) 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-build3105091330=/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 d6526ea3e6 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=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" ./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=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" -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=\"d6526ea3e6ad9081c902859bbb80f9f840377cb4\" /usr/bin/ld: /tmp/ccSATqRx.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