From: Alexander Potapenko <glider@google.com>
Date: Mon, 24 Oct 2022 21:21:40 +0000 (+0200)
Subject: mm: kmsan: export kmsan_copy_page_meta()
X-Git-Tag: v6.1-rc5~84^2~9
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f59a3ee6912997fc56ecee78613fef53aae668d9;p=platform%2Fkernel%2Flinux-starfive.git

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>
---

diff --git a/mm/kmsan/shadow.c b/mm/kmsan/shadow.c
index 21e3e19..a787c04 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)
 {