This is a test for #658: a kernel panic seen when patching an exported

function (e.g., kmalloc) which is used by patch_init().

---

diff -Nupr src.orig/mm/slub.c src/mm/slub.c

--- src.orig/mm/slub.c	2017-11-17 15:58:51.157211972 -0500

+++ src/mm/slub.c	2017-11-17 15:58:56.808211972 -0500

@@ -3731,6 +3731,9 @@ void *__kmalloc(size_t size, gfp_t flags

 	struct kmem_cache *s;

 	void *ret;

+	if (!jiffies)

+		printk("kpatch kmalloc\n");

+

 	if (unlikely(size > KMALLOC_MAX_CACHE_SIZE))

 		return kmalloc_large(size, flags);