SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed mount(/syzcgroup/net, net) failed: 22 mount(/syzcgroup/cpu, cpuset) failed: 22 mount(/syzcgroup/cpu, rlimit) failed: 22 mount(binfmt_misc) failed: 16 write(/proc/sys/fs/binfmt_misc/register) failed: 22 SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed (errno 22: Invalid argument) [ 37.806463][ T44] audit: type=1400 audit(1791521575.355:115): avc: denied { siginh } for pid=5639 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 38.262570][ T44] audit: type=1400 audit(1791521575.805:116): avc: denied { write } for pid=5644 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=1839 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 38.323760][ T44] audit: type=1400 audit(1791521575.865:117): avc: denied { write } for pid=5647 comm="rm" name="hook-state" dev="tmpfs" ino=1839 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 38.419894][ T44] audit: type=1400 audit(1791521575.965:118): avc: denied { write } for pid=5650 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=1839 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 38.476625][ T44] audit: type=1400 audit(1791521576.025:119): avc: denied { write } for pid=5653 comm="rm" name="hook-state" dev="tmpfs" ino=1839 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 38.566080][ T44] audit: type=1400 audit(1791521576.115:120): avc: denied { write } for pid=5656 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=1839 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 Warning: Permanently added '[localhost]:3161' (ED25519) to the list of known hosts. 2026/10/09 04:53:00 ignoring optional flag "type"="qemu" 2026/10/09 04:53:00 parsed 1 programs [ 42.814752][ T44] kauditd_printk_skb: 19 callbacks suppressed [ 42.814770][ T44] audit: type=1400 audit(1791521580.365:140): avc: denied { getattr } for pid=5730 comm="syz-execprog" path="user:[4026531837]" dev="nsfs" ino=4026531837 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:nsfs_t tclass=file permissive=1 [ 42.814976][ T44] audit: type=1400 audit(1791521580.365:141): avc: denied { read } for pid=5730 comm="syz-execprog" dev="nsfs" ino=4026531837 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:nsfs_t tclass=file permissive=1 [ 42.815189][ T44] audit: type=1400 audit(1791521580.365:142): avc: denied { open } for pid=5730 comm="syz-execprog" path="user:[4026531837]" dev="nsfs" ino=4026531837 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:nsfs_t tclass=file permissive=1 [ 42.825435][ T44] audit: type=1400 audit(1791521580.375:143): avc: denied { read } for pid=5730 comm="syz-execprog" name="raw-gadget" dev="devtmpfs" ino=848 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 42.825662][ T44] audit: type=1400 audit(1791521580.375:144): avc: denied { open } for pid=5730 comm="syz-execprog" path="/dev/raw-gadget" dev="devtmpfs" ino=848 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 42.826921][ T44] audit: type=1400 audit(1791521580.375:145): avc: denied { read } for pid=5730 comm="syz-execprog" name="vhci" dev="devtmpfs" ino=1290 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:vhost_device_t tclass=chr_file permissive=1 [ 42.826952][ T44] audit: type=1400 audit(1791521580.375:146): avc: denied { open } for pid=5730 comm="syz-execprog" path="/dev/vhci" dev="devtmpfs" ino=1290 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:vhost_device_t tclass=chr_file permissive=1 [ 42.851301][ T44] audit: type=1400 audit(1791521580.395:147): avc: denied { mounton } for pid=5737 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 [ 42.857196][ T44] audit: type=1400 audit(1791521580.405:148): avc: denied { mount } for pid=5737 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 [ 42.860249][ T5737] cgroup: Unknown subsys name 'net' [ 42.862278][ T44] audit: type=1400 audit(1791521580.405:149): avc: denied { unmount } for pid=5737 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 43.029145][ T5737] cgroup: Unknown subsys name 'cpuset' [ 43.033956][ T5737] cgroup: Unknown subsys name 'rlimit' 2026/10/09 04:53:00 [FATAL] failed to run ["/syz-executor" "setup" "fault" "binfmt_misc" "usb" "802154" "swap"]: exit status 67 mount(/syzcgroup/net, net) failed: 22 mount(/syzcgroup/cpu, cpuset) failed: 22 mount(/syzcgroup/cpu, rlimit) failed: 22 mount(binfmt_misc) failed: 16 write(/proc/sys/fs/binfmt_misc/register) failed: 22 SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed (errno 22: Invalid argument) 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-build2388070279=/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='go1.26.0' GOWORK='' PKG_CONFIG='pkg-config' git status (err=) HEAD detached at 4cf3f9b3f15 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}}' ./sys/syz-sysgen | grep -q false || go install ./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=4cf3f9b3f15d248d052cd369d23308c953d657d9 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240507-154513'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=4cf3f9b3f15d248d052cd369d23308c953d657d9 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240507-154513'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog mkdir -p ./bin/linux_amd64 gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \ -m64 -std=c++11 -I. -Ivendor -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 -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"4cf3f9b3f15d248d052cd369d23308c953d657d9\"