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 '10.128.0.198' (ED25519) to the list of known hosts. 2026/08/07 12:48:56 parsed 1 programs [ 21.264459][ T30] audit: type=1400 audit(1786106936.462:64): avc: denied { node_bind } for pid=292 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 21.267979][ T30] audit: type=1400 audit(1786106936.462:65): avc: denied { module_request } for pid=292 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 [ 21.870817][ T30] audit: type=1400 audit(1786106937.062:66): avc: denied { mounton } for pid=300 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 [ 21.871889][ T300] cgroup: Unknown subsys name 'net' [ 21.893658][ T30] audit: type=1400 audit(1786106937.062:67): avc: denied { mount } for pid=300 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 [ 21.920934][ T30] audit: type=1400 audit(1786106937.102:68): avc: denied { unmount } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 21.921069][ T300] cgroup: Unknown subsys name 'devices' [ 22.005795][ T300] cgroup: Unknown subsys name 'hugetlb' [ 22.011398][ T300] cgroup: Unknown subsys name 'rlimit' [ 22.122990][ T30] audit: type=1400 audit(1786106937.312:69): avc: denied { setattr } for pid=300 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 [ 22.146187][ T30] audit: type=1400 audit(1786106937.312:70): avc: denied { create } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 22.151774][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 22.166723][ T30] audit: type=1400 audit(1786106937.312:71): avc: denied { write } for pid=300 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 22.195429][ T30] audit: type=1400 audit(1786106937.312:72): avc: denied { read } for pid=300 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 [ 22.215940][ T30] audit: type=1400 audit(1786106937.322:73): avc: denied { mounton } for pid=300 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 [ 22.248351][ T300] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 22.696240][ T311] request_module fs-gadgetfs succeeded, but still no fs? [ 23.003972][ T335] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.011045][ T335] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.024252][ T335] device bridge_slave_0 entered promiscuous mode [ 23.031988][ T335] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.039072][ T335] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.046559][ T335] device bridge_slave_1 entered promiscuous mode [ 23.223745][ T335] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.230837][ T335] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.238155][ T335] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.245208][ T335] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.269097][ T342] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.276699][ T342] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.284876][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 23.292402][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 23.304811][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 23.313029][ T342] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.320089][ T342] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.327805][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 23.336425][ T342] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.343472][ T342] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.357829][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 23.371012][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 23.381141][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 23.391715][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 23.399781][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 23.407210][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 23.415482][ T335] device veth0_vlan entered promiscuous mode 2026/08/07 12:48:58 executed programs: 0 [ 23.426355][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 23.435252][ T335] device veth1_macvtap entered promiscuous mode [ 23.443610][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 23.453396][ T342] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 23.518528][ T372] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.525700][ T372] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.533019][ T372] device bridge_slave_0 entered promiscuous mode [ 23.540034][ T372] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.547245][ T372] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.554733][ T372] device bridge_slave_1 entered promiscuous mode [ 23.590190][ T372] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.597239][ T372] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.604509][ T372] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.611520][ T372] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.629109][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 23.636964][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.644470][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.653356][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 23.661647][ T8] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.668695][ T8] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.677595][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 23.685893][ T8] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.692914][ T8] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.704845][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 23.714023][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 23.727628][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 23.738560][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 23.746801][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 23.754802][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 23.767411][ T372] device veth0_vlan entered promiscuous mode [ 23.777297][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 23.786431][ T372] device veth1_macvtap entered promiscuous mode [ 23.795764][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 23.809656][ T8] 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-build3087752245=/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/cc0Gc8zo.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