SYZFAIL: failed to recv rpc SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) cess permissive=1 [ 16.799562][ T30] audit: type=1400 audit(1779955610.227:63): avc: denied { siginh } for pid=224 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 18.972127][ T231] sshd-session (231) used greatest stack depth: 21056 bytes left Warning: Permanently added '10.128.0.226' (ED25519) to the list of known hosts. 2026/05/28 08:07:00 parsed 1 programs [ 27.312926][ T30] audit: type=1400 audit(1779955620.827:64): avc: denied { node_bind } for pid=294 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 27.334790][ T30] audit: type=1400 audit(1779955620.827:65): avc: denied { module_request } for pid=294 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 [ 28.382217][ T30] audit: type=1400 audit(1779955621.897:66): avc: denied { mounton } for pid=301 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 [ 28.387441][ T301] cgroup: Unknown subsys name 'net' [ 28.407554][ T30] audit: type=1400 audit(1779955621.897:67): avc: denied { mount } for pid=301 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 [ 28.438385][ T30] audit: type=1400 audit(1779955621.937:68): avc: denied { unmount } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 28.440387][ T301] cgroup: Unknown subsys name 'devices' [ 28.619084][ T301] cgroup: Unknown subsys name 'hugetlb' [ 28.625382][ T301] cgroup: Unknown subsys name 'rlimit' [ 28.775393][ T30] audit: type=1400 audit(1779955622.287:69): avc: denied { setattr } for pid=301 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 [ 28.801781][ T30] audit: type=1400 audit(1779955622.287:70): avc: denied { create } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 28.828344][ T30] audit: type=1400 audit(1779955622.287:71): avc: denied { write } for pid=301 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 28.850475][ T30] audit: type=1400 audit(1779955622.287:72): avc: denied { read } for pid=301 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 [ 28.851234][ T304] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 28.874229][ T30] audit: type=1400 audit(1779955622.287:73): avc: denied { mounton } for pid=301 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 [ 28.921392][ T301] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 29.507355][ T311] request_module fs-gadgetfs succeeded, but still no fs? [ 29.898017][ T325] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.905674][ T325] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.935190][ T325] device bridge_slave_0 entered promiscuous mode [ 29.944490][ T325] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.953295][ T325] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.961416][ T325] device bridge_slave_1 entered promiscuous mode [ 30.187810][ T325] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.195662][ T325] bridge0: port 2(bridge_slave_1) entered forwarding state [ 30.204020][ T325] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.211574][ T325] bridge0: port 1(bridge_slave_0) entered forwarding state [ 30.257669][ T199] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.276919][ T199] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.287357][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 30.297760][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 30.327635][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.339132][ T199] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.350349][ T199] bridge0: port 1(bridge_slave_0) entered forwarding state [ 30.361078][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 30.370438][ T199] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.378355][ T199] bridge0: port 2(bridge_slave_1) entered forwarding state [ 30.386764][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 30.396079][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 30.415562][ T325] device veth0_vlan entered promiscuous mode [ 30.428125][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 30.438444][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 30.449481][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 30.458720][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 30.468834][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 30.479585][ T325] device veth1_macvtap entered promiscuous mode [ 30.491800][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready 2026/05/28 08:07:04 executed programs: 0 [ 30.508144][ T199] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 30.592833][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.600311][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.608537][ T370] device bridge_slave_0 entered promiscuous mode [ 30.616215][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.624134][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.631970][ T370] device bridge_slave_1 entered promiscuous mode [ 30.700859][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.709023][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 30.716415][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.723982][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 30.749688][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 30.757917][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.765993][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.782137][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.790598][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.798653][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 30.808370][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.817484][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 30.825993][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.833752][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 30.847295][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 30.856378][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 30.865760][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 30.878366][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 30.897102][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 30.905951][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 30.917984][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 30.926260][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 30.936091][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 30.944755][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 30.954783][ T370] device veth0_vlan entered promiscuous mode [ 30.975122][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 30.983862][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 30.994922][ T370] device veth1_macvtap entered promiscuous mode [ 31.011774][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 31.021822][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 31.033276][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 31.044761][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 31.054824][ T45] 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-build897500672=/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/ccHCEnco.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