mm: kmsan: export kmsan_copy_page_meta()

Certain modules call copy_user_highpage(), which calls kmsan_copy_page_meta() under KMSAN, so we need to export the latter. Link: https://lkml.kernel.org/r/[email protected] Link: google/kmsan#89 Fixes: b073d7f ("mm: kmsan: maintain KMSAN metadata for page operations") Signed-off-by: Alexander Potapenko <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
josf · Oct 28, 2022 · f59a3ee · f59a3ee
1 parent 03e5f82
commit f59a3ee
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/mm/kmsan/shadow.c b/mm/kmsan/shadow.c
@@ -167,6 +167,7 @@ void kmsan_copy_page_meta(struct page *dst, struct page *src)
 	__memcpy(origin_ptr_for(dst), origin_ptr_for(src), PAGE_SIZE);
 	kmsan_leave_runtime();
 }
+EXPORT_SYMBOL(kmsan_copy_page_meta);
 
 void kmsan_alloc_page(struct page *page, unsigned int order, gfp_t flags)
 {