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m32r: fix potential NULL-pointer dereference

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Add missing check for memory allocation fail.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kirill A. Shutemov 2013-11-14 14:31:18 -08:00 committed by Linus Torvalds
parent 26db39027c
commit fecf3743b8
1 changed files with 2 additions and 0 deletions
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2
arch/m32r/include/asm/pgalloc.h
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@ -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;
}