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| author | Alexander Potapenko <glider@google.com> | 2022-10-24 23:21:40 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-28 22:37:22 +0200 |
| commit | f59a3ee6912997fc56ecee78613fef53aae668d9 (patch) | |
| tree | 27b52ab52e8d283338963a83c298afdc5449e90f | |
| parent | mm: migrate: fix return value if all subpages of THPs are migrated successfully (diff) | |
| download | linux-f59a3ee6912997fc56ecee78613fef53aae668d9.tar.xz linux-f59a3ee6912997fc56ecee78613fef53aae668d9.zip | |
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>
| -rw-r--r-- | mm/kmsan/shadow.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/kmsan/shadow.c b/mm/kmsan/shadow.c index 21e3e196ec3c..a787c04e9583 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) { |