Add --traceback flag to customize GOTRACEBACK level

runsc/cmd/boot.go

@@ -131,11 +131,11 @@ func (b *Boot) Execute(_ context.Context, f *flag.FlagSet, args ...interface{})
 		return subcommands.ExitUsageError
 	}
 
-	// Ensure that if there is a panic, all goroutine stacks are printed.
-	debug.SetTraceback("system")
-
 	conf := args[0].(*config.Config)
 
+	// Set traceback level
+	debug.SetTraceback(conf.Traceback)
+
 	if b.attached {
 		// Ensure this process is killed after parent process terminates when
 		// attached mode is enabled. In the unfortunate event that the parent

runsc/config/config.go

@@ -37,6 +37,9 @@ type Config struct {
 	// RootDir is the runtime root directory.
 	RootDir string `flag:"root"`
 
+	// Traceback changes the Go runtime's traceback level.
+	Traceback string `flag:"traceback"`
+
 	// Debug indicates that debug logging should be enabled.
 	Debug bool `flag:"debug"`
 

runsc/config/flags.go

@@ -49,6 +49,7 @@ func RegisterFlags() {
 		flag.String("debug-log-format", "text", "log format: text (default), json, or json-k8s.")
 		flag.Bool("alsologtostderr", false, "send log messages to stderr.")
 		flag.Bool("allow-flag-override", false, "allow OCI annotations (dev.gvisor.flag.<name>) to override flags for debugging.")
+		flag.String("traceback", "system", "golang runtime's traceback level")
 
 		// Debugging flags: strace related
 		flag.Bool("strace", false, "enable strace.")