mm/huge_memory.c: use head to check huge zero page

The page could be a tail page, if this is the case, this BUG_ON will never be triggered. Link: http://lkml.kernel.org/r/[email protected] Fixes: e9b61f1 ("thp: reintroduce split_huge_page()") Signed-off-by: Wei Yang <[email protected]> Acked-by: Kirill A. Shutemov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
vieko · Jan 31, 2020 · cb82962 · cb82962
1 parent 8a7ff02
commit cb82962
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
@@ -2712,7 +2712,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list)
 	unsigned long flags;
 	pgoff_t end;
 
-	VM_BUG_ON_PAGE(is_huge_zero_page(page), page);
+	VM_BUG_ON_PAGE(is_huge_zero_page(head), head);
 	VM_BUG_ON_PAGE(!PageLocked(page), page);
 	VM_BUG_ON_PAGE(!PageCompound(page), page);