syz-cluster/workflow/fuzz-step: restart procs more frequently

a-nogikh · a-nogikh · commit be6e28be03f8 · 2025-08-06T16:15:36.000+02:00
This should increase the bug reproduction rate.
diff --git a/syz-cluster/workflow/fuzz-step/main.go b/syz-cluster/workflow/fuzz-step/main.go
@@ -78,6 +78,9 @@ func main() {
 	}
 }
 
+// Do more frequent proc restarts to facilitate a higher reproducation rate.
+const procMaxExecs = 100
+
 func run(baseCtx context.Context, client *api.Client, timeout time.Duration,
 	store *manager.DiffFuzzerStore) error {
 	series, err := client.GetSessionSeries(baseCtx, *flagSession)
@@ -94,6 +97,8 @@ func run(baseCtx context.Context, client *api.Client, timeout time.Duration,
 	if err != nil {
 		return fmt.Errorf("failed to load configs: %w", err)
 	}
+	base.Experimental.ProcMaxExecs = procMaxExecs
+	patched.Experimental.ProcMaxExecs = procMaxExecs
 
 	baseSymbols, patchedSymbols, err := readSymbolHashes()
 	if err != nil {

Original file line number	Diff line number	Diff line change
`@@ -78,6 +78,9 @@ func main() {`
`78`	`78`	`}`
`79`	`79`	`}`
`80`	`80`
	`81`	`+// Do more frequent proc restarts to facilitate a higher reproducation rate.`
	`82`	`+const procMaxExecs = 100`
	`83`	`+`
`81`	`84`	`func run(baseCtx context.Context, client *api.Client, timeout time.Duration,`
`82`	`85`	`store *manager.DiffFuzzerStore) error {`
`83`	`86`	`series, err := client.GetSessionSeries(baseCtx, *flagSession)`
`@@ -94,6 +97,8 @@ func run(baseCtx context.Context, client *api.Client, timeout time.Duration,`
`94`	`97`	`if err != nil {`
`95`	`98`	`return fmt.Errorf("failed to load configs: %w", err)`
`96`	`99`	`}`
	`100`	`+ base.Experimental.ProcMaxExecs = procMaxExecs`
	`101`	`+ patched.Experimental.ProcMaxExecs = procMaxExecs`
`97`	`102`
`98`	`103`	`baseSymbols, patchedSymbols, err := readSymbolHashes()`
`99`	`104`	`if err != nil {`