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 '10.128.10.24' (ED25519) to the list of known hosts. 2026/09/06 23:11:03 parsed 1 programs [ 24.321355][ T24] audit: type=1400 audit(1788736263.290:64): avc: denied { node_bind } for pid=287 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 24.342472][ T24] audit: type=1400 audit(1788736263.290:65): avc: denied { create } for pid=287 comm="syz-execprog" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=rawip_socket permissive=1 [ 24.362919][ T24] audit: type=1400 audit(1788736263.290:66): avc: denied { module_request } for pid=287 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 [ 25.029268][ T24] audit: type=1400 audit(1788736263.990:67): avc: denied { mounton } for pid=296 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 [ 25.030780][ T296] cgroup: Unknown subsys name 'net' [ 25.053460][ T24] audit: type=1400 audit(1788736264.000:68): avc: denied { mount } for pid=296 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 [ 25.082512][ T24] audit: type=1400 audit(1788736264.030:69): avc: denied { unmount } for pid=296 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 25.082748][ T296] cgroup: Unknown subsys name 'devices' [ 25.241188][ T296] cgroup: Unknown subsys name 'hugetlb' [ 25.247185][ T296] cgroup: Unknown subsys name 'rlimit' [ 25.361450][ T24] audit: type=1400 audit(1788736264.330:70): avc: denied { setattr } for pid=296 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=253 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 25.385501][ T24] audit: type=1400 audit(1788736264.330:71): avc: denied { create } for pid=296 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 [ 25.406061][ T24] audit: type=1400 audit(1788736264.330:72): avc: denied { write } for pid=296 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.416401][ T298] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 25.427367][ T24] audit: type=1400 audit(1788736264.330:73): avc: denied { read } for pid=296 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 25.464367][ T296] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.985567][ T305] request_module fs-gadgetfs succeeded, but still no fs? [ 26.012789][ T305] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 26.466497][ T344] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.474009][ T344] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.482275][ T344] device bridge_slave_0 entered promiscuous mode [ 26.506642][ T344] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.519531][ T344] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.542762][ T344] device bridge_slave_1 entered promiscuous mode [ 26.618434][ T344] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.626884][ T344] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.634299][ T344] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.641503][ T344] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.666322][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.674890][ T323] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.683305][ T323] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.696978][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.705575][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.712648][ T323] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.721185][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.730237][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.737306][ T323] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.747437][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.762714][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.772720][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.784107][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.792519][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.800259][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.808786][ T344] device veth0_vlan entered promiscuous mode 2026/09/06 23:11:05 executed programs: 0 [ 26.820710][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.830066][ T344] device veth1_macvtap entered promiscuous mode [ 26.839825][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.851303][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.943753][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.951665][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.959018][ T368] device bridge_slave_0 entered promiscuous mode [ 26.965967][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.973295][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.981236][ T368] device bridge_slave_1 entered promiscuous mode [ 27.013030][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.020390][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.028181][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.035439][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.054139][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.062682][ T323] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.070649][ T323] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.080244][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.088922][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.096657][ T323] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.106267][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.115078][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.123182][ T323] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.135772][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 27.144205][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.153426][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 27.162066][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.175894][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 27.185160][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.201269][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 27.209386][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.218107][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.226862][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.235537][ T368] device veth0_vlan entered promiscuous mode [ 27.252706][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 27.261294][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.271407][ T368] device veth1_macvtap entered promiscuous mode [ 27.281001][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 27.289224][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 27.297954][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.311885][ T323] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 27.320292][ T323] 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-build2981644917=/tmp/go-build -gno-record-gcc-switches' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod' GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs-2/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/ccoexuDx.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