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 '10.128.0.155' (ED25519) to the list of known hosts. 2026/05/13 15:45:45 parsed 1 programs [ 23.489471][ T29] audit: type=1400 audit(1778687145.152:64): avc: denied { node_bind } for pid=374 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 23.510165][ T29] audit: type=1400 audit(1778687145.152:65): avc: denied { module_request } for pid=374 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 [ 24.060995][ T29] audit: type=1400 audit(1778687145.722:66): avc: denied { mounton } for pid=382 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 [ 24.062082][ T382] cgroup: Unknown subsys name 'net' [ 24.083746][ T29] audit: type=1400 audit(1778687145.722:67): avc: denied { mount } for pid=382 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 [ 24.111249][ T29] audit: type=1400 audit(1778687145.752:68): avc: denied { unmount } for pid=382 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.111449][ T382] cgroup: Unknown subsys name 'devices' [ 24.223924][ T382] cgroup: Unknown subsys name 'hugetlb' [ 24.229549][ T382] cgroup: Unknown subsys name 'rlimit' [ 24.339930][ T29] audit: type=1400 audit(1778687146.002:69): avc: denied { setattr } for pid=382 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 [ 24.363288][ T29] audit: type=1400 audit(1778687146.002:70): avc: denied { create } for pid=382 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.383624][ T29] audit: type=1400 audit(1778687146.002:71): avc: denied { write } for pid=382 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.403858][ T29] audit: type=1400 audit(1778687146.002:72): avc: denied { read } for pid=382 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.424142][ T29] audit: type=1400 audit(1778687146.002:73): avc: denied { mounton } for pid=382 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 [ 24.429597][ T384] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 24.537790][ T382] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.013921][ T393] request_module fs-gadgetfs succeeded, but still no fs? [ 25.050959][ T392] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.068307][ T392] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.085436][ T392] device bridge_slave_0 entered promiscuous mode [ 25.093688][ T392] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.100728][ T392] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.108129][ T392] device bridge_slave_1 entered promiscuous mode [ 25.376555][ T392] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.383647][ T392] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.391084][ T392] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.398144][ T392] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.481405][ T93] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.488874][ T93] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.513235][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 25.532710][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.552116][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.560668][ T93] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.567737][ T93] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.576037][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.584747][ T93] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.591798][ T93] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.599296][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.607292][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.620869][ T392] device veth0_vlan entered promiscuous mode [ 25.627156][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.635692][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.643890][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.651355][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.662154][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.672091][ T392] device veth1_macvtap entered promiscuous mode 2026/05/13 15:45:47 executed programs: 0 [ 25.680805][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.696058][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 25.777207][ T451] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.784475][ T451] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.791717][ T451] device bridge_slave_0 entered promiscuous mode [ 25.798659][ T451] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.805863][ T451] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.813370][ T451] device bridge_slave_1 entered promiscuous mode [ 25.848714][ T451] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.855769][ T451] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.863032][ T451] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.870069][ T451] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.887991][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.895533][ T93] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.903043][ T93] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.911664][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.919919][ T93] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.926940][ T93] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.935736][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.943909][ T93] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.951124][ T93] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.963063][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.972011][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.985393][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.996127][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 26.004072][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.012095][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.020017][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.028359][ T451] device veth0_vlan entered promiscuous mode [ 26.038160][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 26.046339][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.055275][ T451] device veth1_macvtap entered promiscuous mode [ 26.064383][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 26.072049][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 26.080432][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.089931][ T93] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 26.098298][ T93] 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-build2094095688=/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/ccpBoWBI.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