score: handle pgtable_page_ctor() fail

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Acked-by: Lennox Wu <lennox.wu@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/score/include/asm/pgalloc.h b/arch/score/include/asm/pgalloc.h
index 716b3fd..2e06765 100644 (file)
--- a/arch/score/include/asm/pgalloc.h
+++ b/arch/score/include/asm/pgalloc.h
@@ -54,9 +54,12 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm,
        struct page *pte;
 
        pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
-       if (pte) {
-               clear_highpage(pte);
-               pgtable_page_ctor(pte);
+       if (!pte)
+               return NULL;
+       clear_highpage(pte);
+       if (!pgtable_page_ctor(pte)) {
+               __free_page(pte);
+               return NULL;
        }
        return pte;
 }