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 '10.128.0.194' (ED25519) to the list of known hosts. 2026/05/15 07:00:38 parsed 1 programs [ 22.087572][ T28] audit: type=1400 audit(1778828438.494:64): avc: denied { node_bind } for pid=295 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 22.108334][ T28] audit: type=1400 audit(1778828438.494:65): avc: denied { module_request } for pid=295 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 [ 22.809914][ T28] audit: type=1400 audit(1778828439.214:66): avc: denied { mounton } for pid=304 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 [ 22.810969][ T304] cgroup: Unknown subsys name 'net' [ 22.832678][ T28] audit: type=1400 audit(1778828439.214:67): avc: denied { mount } for pid=304 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 [ 22.860121][ T28] audit: type=1400 audit(1778828439.244:68): avc: denied { unmount } for pid=304 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 22.860282][ T304] cgroup: Unknown subsys name 'devices' [ 23.003759][ T304] cgroup: Unknown subsys name 'hugetlb' [ 23.009391][ T304] cgroup: Unknown subsys name 'rlimit' [ 23.146985][ T28] audit: type=1400 audit(1778828439.554:69): avc: denied { setattr } for pid=304 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 [ 23.170178][ T28] audit: type=1400 audit(1778828439.554:70): avc: denied { create } for pid=304 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 23.190662][ T28] audit: type=1400 audit(1778828439.554:71): avc: denied { write } for pid=304 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 23.203693][ T306] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 23.211034][ T28] audit: type=1400 audit(1778828439.554:72): avc: denied { read } for pid=304 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 [ 23.239834][ T28] audit: type=1400 audit(1778828439.554:73): avc: denied { mounton } for pid=304 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 [ 23.283856][ T304] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 24.074944][ T314] request_module fs-gadgetfs succeeded, but still no fs? [ 24.173812][ T312] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.180885][ T312] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.193174][ T312] device bridge_slave_0 entered promiscuous mode [ 24.216408][ T312] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.223618][ T312] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.231091][ T312] device bridge_slave_1 entered promiscuous mode [ 24.523599][ T312] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.530659][ T312] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.537962][ T312] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.545024][ T312] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.626583][ T43] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.634292][ T43] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.652385][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 24.659877][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 24.683035][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 24.691234][ T43] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.698305][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.706402][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 24.714944][ T43] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.721998][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.729598][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 24.737675][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 24.752108][ T312] device veth0_vlan entered promiscuous mode [ 24.758888][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 24.767782][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 24.777050][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 24.785402][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 24.799113][ T312] device veth1_macvtap entered promiscuous mode [ 24.806911][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 24.819212][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 24.832702][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/05/15 07:00:41 executed programs: 0 [ 24.903691][ T312] syz-executor (312) used greatest stack depth: 21560 bytes left [ 24.934406][ T373] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.941433][ T373] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.948939][ T373] device bridge_slave_0 entered promiscuous mode [ 24.955787][ T373] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.962819][ T373] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.970077][ T373] device bridge_slave_1 entered promiscuous mode [ 25.007737][ T373] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.014811][ T373] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.022069][ T373] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.029076][ T373] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.046024][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.054182][ T368] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.061363][ T368] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.070602][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.078974][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.086035][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.094841][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 25.103333][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.111486][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.118516][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.135270][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 25.143341][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.154257][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 25.162786][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.179325][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 25.187857][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.199135][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 25.207183][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.215151][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.223304][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.236979][ T373] device veth0_vlan entered promiscuous mode [ 25.246456][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 25.254758][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.263972][ T373] device veth1_macvtap entered promiscuous mode [ 25.279567][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 25.287321][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 25.295782][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.305088][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 25.313323][ T368] 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-build1366083008=/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/cc9R6OsR.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