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 '10.128.1.139' (ED25519) to the list of known hosts. 2026/01/05 09:14:02 parsed 1 programs [ 28.768449][ T30] audit: type=1400 audit(1767604441.991:64): 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 [ 28.790074][ T30] audit: type=1400 audit(1767604442.001:65): 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 [ 29.765167][ T30] audit: type=1400 audit(1767604442.991:66): 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 [ 29.768486][ T289] cgroup: Unknown subsys name 'net' [ 29.787926][ T30] audit: type=1400 audit(1767604442.991:67): 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 [ 29.815275][ T30] audit: type=1400 audit(1767604443.021:68): 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 [ 29.815722][ T289] cgroup: Unknown subsys name 'devices' [ 29.960855][ T289] cgroup: Unknown subsys name 'hugetlb' [ 29.966485][ T289] cgroup: Unknown subsys name 'rlimit' [ 30.113533][ T30] audit: type=1400 audit(1767604443.341:69): 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 [ 30.136929][ T30] audit: type=1400 audit(1767604443.341:70): 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 [ 30.157437][ T30] audit: type=1400 audit(1767604443.341:71): 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 [ 30.176644][ T291] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 30.178494][ T30] audit: type=1400 audit(1767604443.341:72): 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 [ 30.207371][ T30] audit: type=1400 audit(1767604443.341:73): 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 [ 30.264511][ T289] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 30.819260][ T299] request_module fs-gadgetfs succeeded, but still no fs? [ 30.970636][ T299] syz-executor (299) used greatest stack depth: 20392 bytes left [ 31.392859][ T334] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.400070][ T334] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.407672][ T334] device bridge_slave_0 entered promiscuous mode [ 31.416323][ T334] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.423627][ T334] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.431157][ T334] device bridge_slave_1 entered promiscuous mode [ 31.543097][ T334] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.550218][ T334] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.557669][ T334] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.564763][ T334] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.589218][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 31.597004][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.604442][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.630359][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 31.639146][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.646218][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.654050][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 31.662320][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.669443][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.689029][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 31.697607][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 31.706298][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 31.718908][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 31.727204][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 31.734961][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 31.743380][ T334] device veth0_vlan entered promiscuous mode [ 31.755005][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 31.765568][ T334] device veth1_macvtap entered promiscuous mode [ 31.776831][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 31.792070][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/01/05 09:14:05 executed programs: 0 [ 31.904418][ T366] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.912412][ T366] bridge0: port 1(bridge_slave_0) entered disabled state [ 31.920127][ T366] device bridge_slave_0 entered promiscuous mode [ 31.927374][ T366] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.934490][ T366] bridge0: port 2(bridge_slave_1) entered disabled state [ 31.942101][ T366] device bridge_slave_1 entered promiscuous mode [ 32.010212][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 32.017951][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 32.027724][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 32.036518][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 32.044857][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 32.052118][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 32.059791][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 32.069242][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 32.077591][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 32.086150][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 32.093237][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 32.112267][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 32.121980][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 32.143071][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 32.154103][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 32.162346][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 32.170088][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 32.178359][ T366] device veth0_vlan entered promiscuous mode [ 32.194774][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 32.203858][ T366] device veth1_macvtap entered promiscuous mode [ 32.213208][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 32.229267][ 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-build2940726894=/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='go1.24.4' 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/cc77cBLE.o: in function `Connection::Connect(char const*, char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): 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