Add kernel panic util function

Signed-off-by: Daniel Weiße <dw@edgeless.systems>

internal/utils/utils.go

@@ -0,0 +1,17 @@
+package utils
+
+import (
+	"fmt"
+	"os"
+)
+
+// KernelPanic prints the error and triggers a kernel panic.
+//
+// This function WILL cause a system crash!
+// DO NOT call it in any code that may be covered by automatic or manual tests.
+func KernelPanic(err error) {
+	fmt.Println(err)
+	_ = os.WriteFile("/proc/sys/kernel/sysrq", []byte("1"), 0o644)
+	_ = os.WriteFile("/proc/sysrq-trigger", []byte("c"), 0o644)
+	panic(err)
+}