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 '10.128.0.97' (ED25519) to the list of known hosts. 2026/04/04 08:28:23 parsed 1 programs [ 22.324183][ T30] audit: type=1400 audit(1775291303.913:64): avc: denied { node_bind } for pid=281 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 22.345603][ T30] audit: type=1400 audit(1775291303.913:65): avc: denied { module_request } for pid=281 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 [ 23.042947][ T30] audit: type=1400 audit(1775291304.633:66): avc: denied { mounton } for pid=289 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2023 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 23.043994][ T289] cgroup: Unknown subsys name 'net' [ 23.066903][ T30] audit: type=1400 audit(1775291304.633:67): avc: denied { mount } for pid=289 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 [ 23.096646][ T30] audit: type=1400 audit(1775291304.673:68): avc: denied { unmount } for pid=289 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 23.096922][ T289] cgroup: Unknown subsys name 'devices' [ 23.277217][ T289] cgroup: Unknown subsys name 'hugetlb' [ 23.283169][ T289] cgroup: Unknown subsys name 'rlimit' [ 23.513055][ T30] audit: type=1400 audit(1775291305.103:69): avc: denied { setattr } for pid=289 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 [ 23.537290][ T30] audit: type=1400 audit(1775291305.103:70): avc: denied { create } for pid=289 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 23.542971][ T291] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 23.558945][ T30] audit: type=1400 audit(1775291305.103:71): avc: denied { write } for pid=289 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 23.589008][ T30] audit: type=1400 audit(1775291305.103:72): avc: denied { read } for pid=289 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 [ 23.610439][ T30] audit: type=1400 audit(1775291305.103:73): avc: denied { mounton } for pid=289 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 [ 23.639935][ T289] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 24.158889][ T300] request_module fs-gadgetfs succeeded, but still no fs? [ 24.341451][ T299] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.365171][ T299] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.373053][ T299] device bridge_slave_0 entered promiscuous mode [ 24.402385][ T298] syz-executor (298) used greatest stack depth: 21056 bytes left [ 24.402488][ T299] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.418783][ T299] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.426620][ T299] device bridge_slave_1 entered promiscuous mode [ 24.744478][ T299] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.751789][ T299] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.759292][ T299] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.766872][ T299] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.843754][ T317] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.851728][ T317] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.865912][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 24.874123][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 24.895838][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 24.904745][ T317] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.912205][ T317] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.920068][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 24.928616][ T317] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.936703][ T317] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.944507][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 24.953380][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 24.969566][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 24.980747][ T299] device veth0_vlan entered promiscuous mode [ 24.987326][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 24.995446][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.003112][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.015329][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.024413][ T299] device veth1_macvtap entered promiscuous mode [ 25.035868][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready 2026/04/04 08:28:26 executed programs: 0 [ 25.045976][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.120343][ T357] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.128543][ T357] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.136416][ T357] device bridge_slave_0 entered promiscuous mode [ 25.143558][ T357] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.150924][ T357] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.158698][ T357] device bridge_slave_1 entered promiscuous mode [ 25.198208][ T357] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.205865][ T357] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.213188][ T357] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.220601][ T357] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.229010][ T317] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.236813][ T317] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.257255][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 25.265640][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.276155][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 25.286177][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.296080][ T317] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.303295][ T317] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.311601][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 25.320376][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.328929][ T317] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.336339][ T317] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.348445][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 25.356879][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.373156][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 25.381665][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.395337][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 25.404091][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.420301][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 25.429068][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.437442][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.445112][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.454259][ T357] device veth0_vlan entered promiscuous mode [ 25.468077][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 25.476868][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.487084][ T357] device veth1_macvtap entered promiscuous mode [ 25.496423][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 25.504366][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 25.513465][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.523365][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 25.531991][ T317] 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-build253275372=/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 d6526ea3e6a 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/ccQ1gRVq.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