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 '10.128.0.96' (ED25519) to the list of known hosts. 2026/02/05 05:41:22 parsed 1 programs [ 21.404777][ T30] audit: type=1400 audit(1770270082.588:64): 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 [ 21.425467][ T30] audit: type=1400 audit(1770270082.588:65): 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 [ 22.018929][ T30] audit: type=1400 audit(1770270083.198:66): avc: denied { mounton } for pid=290 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 [ 22.020112][ T290] cgroup: Unknown subsys name 'net' [ 22.041738][ T30] audit: type=1400 audit(1770270083.198:67): avc: denied { mount } for pid=290 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 [ 22.069120][ T30] audit: type=1400 audit(1770270083.228:68): avc: denied { unmount } for pid=290 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 22.069268][ T290] cgroup: Unknown subsys name 'devices' [ 22.304307][ T290] cgroup: Unknown subsys name 'hugetlb' [ 22.309895][ T290] cgroup: Unknown subsys name 'rlimit' [ 22.511895][ T30] audit: type=1400 audit(1770270083.688:69): avc: denied { setattr } for pid=290 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 [ 22.535031][ T30] audit: type=1400 audit(1770270083.688:70): avc: denied { create } for pid=290 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 [ 22.555365][ T30] audit: type=1400 audit(1770270083.688:71): avc: denied { write } for pid=290 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 22.558000][ T292] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 22.576012][ T30] audit: type=1400 audit(1770270083.698:72): avc: denied { read } for pid=290 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 22.604523][ T30] audit: type=1400 audit(1770270083.698:73): avc: denied { mounton } for pid=290 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 [ 22.609955][ T290] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 23.086813][ T300] request_module fs-gadgetfs succeeded, but still no fs? [ 23.485917][ T328] syz-executor (328) used greatest stack depth: 22400 bytes left [ 23.539444][ T336] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.557328][ T336] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.579200][ T336] device bridge_slave_0 entered promiscuous mode [ 23.588228][ T336] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.595470][ T336] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.603101][ T336] device bridge_slave_1 entered promiscuous mode [ 23.661823][ T336] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.668893][ T336] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.676190][ T336] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.683219][ T336] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.699937][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.707479][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.715268][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 23.722836][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 23.732137][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 23.740401][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.747448][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.755841][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 23.764011][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.771172][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.783592][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 23.792396][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 23.805118][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 23.816224][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 23.824406][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 23.831720][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 23.840382][ T336] device veth0_vlan entered promiscuous mode [ 23.852080][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready 2026/02/05 05:41:25 executed programs: 0 [ 23.861507][ T336] device veth1_macvtap entered promiscuous mode [ 23.870302][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 23.880022][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 23.923449][ T336] syz-executor (336) used greatest stack depth: 21408 bytes left [ 23.948030][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.955138][ T364] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.962409][ T364] device bridge_slave_0 entered promiscuous mode [ 23.969371][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.976572][ T364] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.983971][ T364] device bridge_slave_1 entered promiscuous mode [ 24.019657][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.026716][ T364] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.033996][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.041002][ T364] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.058973][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 24.066551][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 24.073762][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 24.082290][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 24.090662][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 24.097721][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 24.106323][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 24.114532][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 24.121539][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 24.133227][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 24.142154][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 24.155007][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 24.166007][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 24.174386][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 24.181919][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 24.194269][ T364] device veth0_vlan entered promiscuous mode [ 24.204422][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 24.213827][ T364] device veth1_macvtap entered promiscuous mode [ 24.222346][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 24.238110][ T10] 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-build265442721=/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 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/ccq64rMp.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