diff --git a/sys/compat/linuxkpi/common/include/linux/slab.h b/sys/compat/linuxkpi/common/include/linux/slab.h
--- a/sys/compat/linuxkpi/common/include/linux/slab.h
+++ b/sys/compat/linuxkpi/common/include/linux/slab.h
@@ -95,6 +95,7 @@
 void *lkpi___kmalloc(size_t size, gfp_t flags);
 void *lkpi___kmalloc_node(size_t size, gfp_t flags, int node);
 #define	__kmalloc(_s, _f)	lkpi___kmalloc(_s, _f)
+void *lkpi_krealloc(void *, size_t, gfp_t);
 
 static inline gfp_t
 linux_check_m_flags(gfp_t flags)
@@ -149,6 +150,21 @@
 	return (kmalloc_array_node(n, size, flags, node));
 }
 
+static inline void *
+krealloc(void *ptr, size_t size, gfp_t flags)
+{
+	return (lkpi_krealloc(ptr, size, flags));
+}
+
+static inline void *
+krealloc_array(void *ptr, size_t n, size_t size, gfp_t flags)
+{
+	if (WOULD_OVERFLOW(n, size))
+		return NULL;
+
+	return (krealloc(ptr, n * size, flags));
+}
+
 static inline void *
 __vmalloc(size_t size, gfp_t flags, int other)
 {
@@ -174,21 +190,6 @@
 	return (kmalloc_array(n, size, linux_check_m_flags(flags)));
 }
 
-static inline void *
-krealloc(void *ptr, size_t size, gfp_t flags)
-{
-	return (realloc(ptr, size, M_KMALLOC, linux_check_m_flags(flags)));
-}
-
-static inline void *
-krealloc_array(void *ptr, size_t n, size_t size, gfp_t flags)
-{
-	if (WOULD_OVERFLOW(n, size))
-		return NULL;
-
-	return (realloc(ptr, n * size, M_KMALLOC, linux_check_m_flags(flags)));
-}
-
 extern void linux_kfree_async(void *);
 
 static inline void
diff --git a/sys/compat/linuxkpi/common/src/linux_slab.c b/sys/compat/linuxkpi/common/src/linux_slab.c
--- a/sys/compat/linuxkpi/common/src/linux_slab.c
+++ b/sys/compat/linuxkpi/common/src/linux_slab.c
@@ -234,6 +234,28 @@
 		    0, -1UL, PAGE_SIZE, 0));
 }
 
+void *
+lkpi_krealloc(void *ptr, size_t size, gfp_t flags)
+{
+	void *nptr;
+	size_t osize;
+
+	osize = ksize(ptr);
+	if (size <= osize)
+		return (ptr);
+
+	if (osize <= PAGE_SIZE && size <= PAGE_SIZE)
+		return (realloc(ptr, size, M_KMALLOC, linux_check_m_flags(flags)));
+
+	nptr = kmalloc(size, flags);
+	if (nptr == NULL)
+		return (NULL);
+
+	memcpy(nptr, ptr, osize);
+	kfree(ptr);
+	return (nptr);
+}
+
 struct lkpi_kmalloc_ctx {
 	size_t size;
 	gfp_t flags;
diff --git a/sys/kern/kern_malloc.c b/sys/kern/kern_malloc.c
--- a/sys/kern/kern_malloc.c
+++ b/sys/kern/kern_malloc.c
@@ -1142,6 +1142,9 @@
 	case SLAB_COOKIE_MALLOC_LARGE:
 		size = malloc_large_size(slab);
 		break;
+	case SLAB_COOKIE_CONTIG_MALLOC:
+		size = round_page(contigmalloc_size(slab));
+		break;
 	default:
 		__assert_unreachable();
 		size = 0;