TMP: kasan: boot testing module

Link: https://linux-review.googlesource.com/id/Ia4b064184a74ed9fd10d1c1919a63619938b7fae

sound/last.c

@@ -7,11 +7,37 @@
 #include <linux/init.h>
 #include <sound/core.h>
 
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/gfp.h>
+#include <linux/slab.h>
+
+static void mte_test(void)
+{
+	uint64_t *p = kmalloc(sizeof(uint64_t), GFP_ATOMIC);
+	size_t size = ksize(p);
+
+	pr_err("Memory Tagging Test (CPU %u)\n", smp_processor_id());
+	pr_err("p = 0x%px, size = %zu\n", p, size);
+
+	pr_err("p[0] <= 1\n");
+	p[0] = 1;
+
+	pr_err("p[0] = %llu\n", p[0]);
+
+	pr_err("kfree(p)\n");
+	kfree(p);
+
+	pr_err("p[0] <= 0\n");
+	p[0] = 0;
+}
+
 static int __init alsa_sound_last_init(void)
 {
 	struct snd_card *card;
 	int idx, ok = 0;
-	
+
 	printk(KERN_INFO "ALSA device list:\n");
 	for (idx = 0; idx < SNDRV_CARDS; idx++) {
 		card = snd_card_ref(idx);
@@ -23,6 +49,9 @@ static int __init alsa_sound_last_init(void)
 	}
 	if (ok == 0)
 		printk(KERN_INFO "  No soundcards found.\n");
+
+	mte_test();
+
 	return 0;
 }