pgd = hugepgd_alloc(mm, addr); if (! pgd) 
pud = hugepgd_alloc(mm, addr); if (! pud) 
static pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr){	pgd_t *pgd;	BUG_ON(! in_hugepage_area(mm->context, addr));	pgd = hugepgd_alloc(mm, addr);	if (! pgd)		return NULL;	return hugepte_alloc(mm, pgd, addr);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/58366af5861eee1479426380e3c91ecb334c301d/hugetlbpage.c/buggy/arch/ppc64/mm/hugetlbpage.c