bpflbr: Skip tracing bpf progs

Tracing bpf progs, like `fentry` and `fexit`, are not allowed to be traced by `fentry` or `fexit` again. Signed-off-by: Leon Hwang <[email protected]>
Asphaltt · Dec 6, 2024 · 9fa8b11 · 9fa8b11
1 parent 593feb9
commit 9fa8b11
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/internal/bpflbr/bpf_tracing_info.go b/internal/bpflbr/bpf_tracing_info.go
@@ -15,6 +15,10 @@ type bpfTracingInfo struct {
 }
 
 func (p *bpfProgs) addTracing(id ebpf.ProgramID, funcName string, prog *ebpf.Program) error {
+	if prog.Type() == ebpf.Tracing {
+		return nil
+	}
+
 	key := fmt.Sprintf("%d:%s", id, funcName)
 	if _, ok := p.tracings[key]; ok {
 		return nil