[PATCH 03/34] m32r: fix potential NULL-pointer dereference

[Kirill A. Shutemov]

Add missing check for memory allocation fail.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Hirokazu Takata <takata@xxxxxxxxxxxxxx>
---
 arch/m32r/include/asm/pgalloc.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/m32r/include/asm/pgalloc.h b/arch/m32r/include/asm/pgalloc.h
index 0fc7361989..ac4208bcc5 100644
--- a/arch/m32r/include/asm/pgalloc.h
+++ b/arch/m32r/include/asm/pgalloc.h
@@ -43,6 +43,8 @@ static __inline__ pgtable_t pte_alloc_one(struct mm_struct *mm,
 {
 	struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);
 
+	if (!pte)
+		return NULL;
 	pgtable_page_ctor(pte);
 	return pte;
 }
-- 
1.8.4.rc3

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