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 '10.128.1.221' (ED25519) to the list of known hosts. 2025/12/13 20:21:02 parsed 1 programs [ 23.331022][ T30] audit: type=1400 audit(1765657262.779:64): 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 [ 23.352387][ T30] audit: type=1400 audit(1765657262.779:65): 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 [ 23.986387][ T30] audit: type=1400 audit(1765657263.439:66): 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 [ 23.987485][ T289] cgroup: Unknown subsys name 'net' [ 24.010184][ T30] audit: type=1400 audit(1765657263.439:67): 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 [ 24.039046][ T30] audit: type=1400 audit(1765657263.469:68): 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 [ 24.039260][ T289] cgroup: Unknown subsys name 'devices' [ 24.216151][ T289] cgroup: Unknown subsys name 'hugetlb' [ 24.222051][ T289] cgroup: Unknown subsys name 'rlimit' [ 24.394890][ T30] audit: type=1400 audit(1765657263.849:69): 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 [ 24.418788][ T30] audit: type=1400 audit(1765657263.849:70): 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 Setting up swapspace version 1, size = 127995904 bytes [ 24.426646][ T291] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 24.440048][ T30] audit: type=1400 audit(1765657263.849:71): 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 [ 24.473025][ T30] audit: type=1400 audit(1765657263.849:72): 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 [ 24.485185][ T289] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 24.495195][ T30] audit: type=1400 audit(1765657263.849:73): 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 [ 25.017261][ T299] request_module fs-gadgetfs succeeded, but still no fs? [ 25.141656][ T298] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.173907][ T298] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.181660][ T298] device bridge_slave_0 entered promiscuous mode [ 25.205137][ T298] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.212358][ T298] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.220780][ T298] device bridge_slave_1 entered promiscuous mode [ 25.450214][ T298] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.457465][ T298] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.465507][ T298] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.473325][ T298] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.583927][ T311] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.591674][ T311] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.599559][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 25.608544][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.633888][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.642902][ T311] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.650852][ T311] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.664177][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.673318][ T311] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.681249][ T311] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.698502][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.709117][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.726533][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.741319][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.752665][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.762002][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.770614][ T298] device veth0_vlan entered promiscuous mode [ 25.783986][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.793791][ T298] device veth1_macvtap entered promiscuous mode [ 25.805238][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.818810][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2025/12/13 20:21:05 executed programs: 0 [ 25.928998][ T365] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.936559][ T365] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.944137][ T365] device bridge_slave_0 entered promiscuous mode [ 25.952071][ T365] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.959582][ T365] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.967004][ T365] device bridge_slave_1 entered promiscuous mode [ 26.010815][ T365] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.018500][ T365] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.026397][ T365] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.034095][ T365] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.045385][ T45] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.053164][ T45] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.070520][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 26.078354][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.087280][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 26.095949][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.104935][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.113187][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.122354][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 26.131289][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.140146][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.147637][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.158978][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 26.167259][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.177133][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 26.186168][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.199348][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 26.208565][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.226882][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 26.236013][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.245323][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.253330][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.262773][ T365] device veth0_vlan entered promiscuous mode [ 26.276765][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 26.285359][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.295253][ T365] device veth1_macvtap entered promiscuous mode [ 26.304888][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 26.312628][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 26.321655][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.331178][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 26.339777][ 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-build1778006187=/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='go1.24.4' GOWORK='' PKG_CONFIG='pkg-config' git status (err=) HEAD detached at 4e1406b4de 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=4e1406b4defac0e2a9d9424c70706f79a7750cf3 -X github.com/google/syzkaller/prog.gitRevisionDate=20251106-151142" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=4e1406b4defac0e2a9d9424c70706f79a7750cf3 -X github.com/google/syzkaller/prog.gitRevisionDate=20251106-151142" ./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=4e1406b4defac0e2a9d9424c70706f79a7750cf3 -X github.com/google/syzkaller/prog.gitRevisionDate=20251106-151142" -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=\"4e1406b4defac0e2a9d9424c70706f79a7750cf3\" /usr/bin/ld: /tmp/ccKTVKH8.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