Add missing check for memory allocation fail.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Chris Zankel <chris@xxxxxxxxxx>
Cc: Max Filippov <jcmvbkbc@xxxxxxxxx>
---
arch/xtensa/include/asm/pgalloc.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/xtensa/include/asm/pgalloc.h b/arch/xtensa/include/asm/pgalloc.h
index cf914c8c24..037671a655 100644
--- a/arch/xtensa/include/asm/pgalloc.h
+++ b/arch/xtensa/include/asm/pgalloc.h
@@ -51,9 +51,13 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
unsigned long addr)
{
+ pte_t *pte;
struct page *page;
- page = virt_to_page(pte_alloc_one_kernel(mm, addr));
+ pte = pte_alloc_one_kernel(mm, addr);
+ if (!pte)
+ return NULL;
+ page = virt_to_page(pte);
pgtable_page_ctor(page);
return page;
}
--
1.8.4.rc3
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