From f59a3ee6912997fc56ecee78613fef53aae668d9 Mon Sep 17 00:00:00 2001
From: Alexander Potapenko <glider@google.com>
Date: Mon, 24 Oct 2022 23:21:40 +0200
Subject: [PATCH] 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/20221024212144.2852069-1-glider@google.com
Link: https://github.com/google/kmsan/issues/89
Fixes: b073d7f8aee4 ("mm: kmsan: maintain KMSAN metadata for page operations")
Signed-off-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/kmsan/shadow.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/kmsan/shadow.c b/mm/kmsan/shadow.c
index 21e3e196ec3cf..a787c04e9583c 100644
--- 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)
{
--
GitLab