executor: remove ability to detect kernel bugs

This ability was never used but we maintain a bunch of code for it.
syzkaller also recently learned to spoof this error code
with some ptrace magic (probably intercepted control flow again
and exploited executor binary).
Drop all of it.

1 files changed, 2 insertions, 9 deletions

diff --git a/pkg/ipc/ipc_test.go b/pkg/ipc/ipc_test.go
index d168a2535..8d0ca7ff5 100644
--- a/pkg/ipc/ipc_test.go
+++ b/pkg/ipc/ipc_test.go
@@ -96,16 +96,13 @@ func TestExecute(t *testing.T) {
 			opts := &ExecOpts{
 				Flags: flag,
 			}
-			output, info, failed, hanged, err := env.Exec(opts, p)
+			output, info, hanged, err := env.Exec(opts, p)
 			if err != nil {
 				t.Fatalf("failed to run executor: %v", err)
 			}
 			if hanged {
 				t.Fatalf("program hanged:\n%s", output)
 			}
-			if failed {
-				t.Fatalf("program failed:\n%s", output)
-			}
 			if len(info.Calls) == 0 {
 				t.Fatalf("no calls executed:\n%s", output)
 			}
@@ -142,7 +139,7 @@ func TestParallel(t *testing.T) {
 			}()
 			p := target.GenerateSimpleProg()
 			opts := &ExecOpts{}
-			output, info, failed, hanged, err := env.Exec(opts, p)
+			output, info, hanged, err := env.Exec(opts, p)
 			if err != nil {
 				err = fmt.Errorf("failed to run executor: %v", err)
 				return
@@ -151,10 +148,6 @@ func TestParallel(t *testing.T) {
 				err = fmt.Errorf("program hanged:\n%s", output)
 				return
 			}
-			if failed {
-				err = fmt.Errorf("program failed:\n%s", output)
-				return
-			}
 			if len(info.Calls) == 0 {
 				err = fmt.Errorf("no calls executed:\n%s", output)
 				return