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 '10.128.1.85' (ED25519) to the list of known hosts. 2026/02/05 13:57:07 parsed 1 programs [ 25.847701][ T28] audit: type=1400 audit(1770299827.934:64): avc: denied { node_bind } for pid=282 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 25.868588][ T28] audit: type=1400 audit(1770299827.934:65): avc: denied { module_request } for pid=282 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 [ 27.024865][ T28] audit: type=1400 audit(1770299829.114:66): avc: denied { mounton } for pid=291 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 [ 27.028178][ T291] cgroup: Unknown subsys name 'net' [ 27.047730][ T28] audit: type=1400 audit(1770299829.114:67): avc: denied { mount } for pid=291 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 [ 27.075589][ T28] audit: type=1400 audit(1770299829.144:68): avc: denied { unmount } for pid=291 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 27.076004][ T291] cgroup: Unknown subsys name 'devices' [ 27.194918][ T291] cgroup: Unknown subsys name 'hugetlb' [ 27.200887][ T291] cgroup: Unknown subsys name 'rlimit' [ 27.343935][ T28] audit: type=1400 audit(1770299829.434:69): avc: denied { setattr } for pid=291 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=258 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 27.367471][ T28] audit: type=1400 audit(1770299829.434:70): avc: denied { create } for pid=291 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 27.388854][ T28] audit: type=1400 audit(1770299829.434:71): avc: denied { write } for pid=291 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 27.409504][ T28] audit: type=1400 audit(1770299829.434:72): avc: denied { read } for pid=291 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 27.420392][ T293] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 27.430270][ T28] audit: type=1400 audit(1770299829.434:73): avc: denied { mounton } for pid=291 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 [ 27.479736][ T291] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 28.346094][ T299] request_module fs-gadgetfs succeeded, but still no fs? [ 28.572709][ T300] syz-executor (300) used greatest stack depth: 21952 bytes left [ 28.902996][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.910330][ T324] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.922047][ T324] device bridge_slave_0 entered promiscuous mode [ 28.931693][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.938805][ T324] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.946394][ T324] device bridge_slave_1 entered promiscuous mode [ 29.097170][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.104330][ T324] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.112028][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.119286][ T324] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.147900][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.155874][ T317] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.165089][ T317] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.174499][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.183028][ T317] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.190174][ T317] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.199317][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.208173][ T317] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.215280][ T317] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.227981][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.238117][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.263849][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.278518][ T324] device veth0_vlan entered promiscuous mode [ 29.285385][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.295886][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.304142][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready 2026/02/05 13:57:11 executed programs: 0 [ 29.317990][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.328546][ T324] device veth1_macvtap entered promiscuous mode [ 29.340672][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.351617][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 29.446381][ T366] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.453884][ T366] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.461916][ T366] device bridge_slave_0 entered promiscuous mode [ 29.469208][ T366] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.476408][ T366] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.483988][ T366] device bridge_slave_1 entered promiscuous mode [ 29.568279][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 29.577082][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.587238][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 29.595983][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.604554][ T317] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.611592][ T317] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.625632][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 29.634596][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 29.643384][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.651608][ T317] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.658888][ T317] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.680183][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.689650][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.704391][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.724111][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.732768][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.740367][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.755952][ T366] device veth0_vlan entered promiscuous mode [ 29.766787][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.776586][ T366] device veth1_macvtap entered promiscuous mode [ 29.786479][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 29.795114][ T317] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.814932][ 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-build2914489332=/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 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/ccJshhG7.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