Commit 6e7f2eac authored May 07, 2020 by Linus Torvalds

linux

Pull arm64 fix from Catalin Marinas:
 "Avoid potential NULL dereference in huge_pte_alloc() on pmd_alloc()
  failure"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: hugetlb: avoid potential NULL dereference

parents 8c16ec94 027d0c71

arch/arm64/mm/hugetlbpage.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -230,6 +230,8 @@ pte_t huge_pte_alloc(struct mm_struct mm,
		ptep = (pte_t *)pudp;
		} else if (sz == (CONT_PTE_SIZE)) {
		pmdp = pmd_alloc(mm, pudp, addr);
		if (!pmdp)
		return NULL;

		WARN_ON(addr & (sz - 1));
		/*

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