xtensa: handle pgtable_page_ctor() fail

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/arch/xtensa/include/asm/pgalloc.h b/arch/xtensa/include/asm/pgalloc.h
index 037671a655dc..b8774f1e21e6 100644
--- a/arch/xtensa/include/asm/pgalloc.h
+++ b/arch/xtensa/include/asm/pgalloc.h
@@ -58,7 +58,10 @@ static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
         if (!pte)
                 return NULL;
         page = virt_to_page(pte);
-        pgtable_page_ctor(page);
+        if (!pgtable_page_ctor(page)) {
+                kmem_cache_free(pgtable_cache, pte);
+                return NULL;
+        }
         return page;
 }