kmsan: don't unpoison memory in do_read_cache_page()

Looks like returning initialized values from READ_ONCE_NOCHECK supersedes it.
google · Oct 30, 2019 · 6f88939 · 6f88939
1 parent 4f02cb4
commit 6f88939
Showing 1 changed file with 0 additions and 2 deletions.
diff --git a/mm/filemap.c b/mm/filemap.c
@@ -2812,8 +2812,6 @@ static struct page *do_read_cache_page(struct address_space *mapping,
 		page = wait_on_page_read(page);
 		if (IS_ERR(page))
 			return page;
-		/* Assume all pages in page cache are initialized. */
-		kmsan_unpoison_shadow(page_address(page), PAGE_SIZE);
 		goto out;
 	}
 	if (PageUptodate(page))