diff --git a/runsc/main.go b/runsc/main.go
index 0c9b9af78..c51b199aa 100644
--- a/runsc/main.go
+++ b/runsc/main.go
@@ -179,6 +179,10 @@ func main() {
 
 	if *debugLogFD > -1 {
 		f := os.NewFile(uintptr(*debugLogFD), "debug log file")
+		// Dup f to stderr so we capture stack traces on panic.
+		if err := syscall.Dup2(int(f.Fd()), int(os.Stderr.Fd())); err != nil {
+			cmd.Fatalf("error dup'ing fd %d to stderr: %v", f.Fd(), err)
+		}
 		e = log.MultiEmitter{e, log.GoogleEmitter{&log.Writer{Next: f}}}
 	} else if *debugLogDir != "" {
 		if err := os.MkdirAll(*debugLogDir, 0775); err != nil {
@@ -189,6 +193,10 @@ func main() {
 		if err != nil {
 			cmd.Fatalf("error opening debug log file in %q: %v", *debugLogDir, err)
 		}
+		// Dup f to stderr so we capture stack traces on panic.
+		if err := syscall.Dup2(int(f.Fd()), int(os.Stderr.Fd())); err != nil {
+			cmd.Fatalf("error dup'ing fd %d to stderr: %v", f.Fd(), err)
+		}
 		e = log.MultiEmitter{e, log.GoogleEmitter{&log.Writer{Next: f}}}
 	}