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syz-agent: make cache size configurable #6562

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Merged
dvyukov merged 1 commit into from
Jan 9, 2026
Merged

syz-agent: make cache size configurable #6562

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7 changes: 5 additions & 2 deletions syz-agent/agent.go
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,9 @@ type Config struct {
Image string `json:"image"`
Type string `json:"type"`
VM json.RawMessage `json:"vm"`
// Max workdir cache size (defaults to 1TB).
// The whole workdir may be slightly larger, since e.g. kernel checkout is not accounted here.
CacheSize uint64
// Use fixed base commit for patching jobs (for testing).
FixedBaseCommit string `json:"fixed_base_commit"`
// Use this LLM model (for testing, if empty use a default model).
Expand All @@ -66,6 +69,7 @@ func run(configFile string, exitOnUpgrade, autoUpdate bool) error {
cfg := &Config{
SyzkallerRepo: "https://github.com/google/syzkaller.git",
SyzkallerBranch: "master",
CacheSize: 1 << 40, // 1TB should be enough for everyone!
Model: aflow.DefaultModel,
}
if err := config.LoadFile(configFile, cfg); err != nil {
Expand Down Expand Up @@ -103,8 +107,7 @@ func run(configFile string, exitOnUpgrade, autoUpdate bool) error {
updater.UpdateOnStart(autoUpdate, updatePending, shutdownPending)

const workdir = "workdir"
const cacheSize = 1 << 40 // 1TB should be enough for everyone!
cache, err := aflow.NewCache(filepath.Join(workdir, "cache"), cacheSize)
cache, err := aflow.NewCache(filepath.Join(workdir, "cache"), cfg.CacheSize)
if err != nil {
return err
}
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