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 '10.128.1.28' (ED25519) to the list of known hosts. 2026/08/26 02:54:38 parsed 1 programs [ 24.916106][ T24] audit: type=1400 audit(1787712878.690:64): 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 [ 24.937636][ T24] audit: type=1400 audit(1787712878.690:65): 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 [ 24.957972][ T24] audit: type=1400 audit(1787712878.690:66): 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 [ 25.620453][ T24] audit: type=1400 audit(1787712879.390:67): 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 [ 25.621515][ T296] cgroup: Unknown subsys name 'net' [ 25.646175][ T24] audit: type=1400 audit(1787712879.390:68): 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 [ 25.684503][ T24] audit: type=1400 audit(1787712879.420:69): 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 [ 25.684716][ T296] cgroup: Unknown subsys name 'devices' [ 25.816224][ T296] cgroup: Unknown subsys name 'hugetlb' [ 25.822993][ T296] cgroup: Unknown subsys name 'rlimit' [ 25.966975][ T24] audit: type=1400 audit(1787712879.740:70): 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 Setting up swapspace version 1, size = 127995904 bytes [ 25.998624][ T24] audit: type=1400 audit(1787712879.740:71): 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 [ 26.001099][ T298] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 26.020437][ T24] audit: type=1400 audit(1787712879.740:72): 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 [ 26.050497][ T24] audit: type=1400 audit(1787712879.740:73): 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 [ 26.072624][ T296] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.577722][ T305] request_module fs-gadgetfs succeeded, but still no fs? [ 26.596140][ T308] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 26.871472][ T329] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.896752][ T329] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.915020][ T329] device bridge_slave_0 entered promiscuous mode [ 26.955308][ T329] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.966842][ T329] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.975365][ T329] device bridge_slave_1 entered promiscuous mode [ 27.162603][ T329] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.169804][ T329] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.178408][ T329] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.186896][ T329] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.208802][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.223461][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.236249][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.256344][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.265674][ T326] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.272847][ T326] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.280847][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.290295][ T326] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.297598][ T326] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.305621][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.314115][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.340445][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.379938][ T329] device veth0_vlan entered promiscuous mode [ 27.402782][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.412774][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.429725][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.444657][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.453956][ T329] device veth1_macvtap entered promiscuous mode [ 27.464677][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready 2026/08/26 02:54:41 executed programs: 0 [ 27.475294][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.578746][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.586341][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.594912][ T368] device bridge_slave_0 entered promiscuous mode [ 27.602118][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.610355][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.618942][ T368] device bridge_slave_1 entered promiscuous mode [ 27.654668][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.662224][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.670436][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.679850][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.699970][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.709852][ T326] bridge0: port 1(bridge_slave_0) entered disabled state [ 27.718916][ T326] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.730161][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 27.740808][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.750678][ T326] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.758948][ T326] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.769537][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 27.778821][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.787252][ T326] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.795780][ T326] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.816633][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 27.825542][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.835842][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 27.845287][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.865166][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 27.873699][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.885281][ T368] device veth0_vlan entered promiscuous mode [ 27.892566][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 27.901332][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.910268][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.918275][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.937956][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 27.947655][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.958900][ T368] device veth1_macvtap entered promiscuous mode [ 27.973930][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 27.982449][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 27.991160][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.001879][ T326] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 28.010721][ T326] 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-build2008940190=/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 d6526ea3e 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/ccJjVM7S.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