linux-kernel - [PATCH] sparc64: Fix size check in huge_pte

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Date:   Fri,  3 Mar 2017 14:40:44 -0800
From:   Nitin Gupta <nitin.m.gupta@...cle.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     Nitin Gupta <nitin.m.gupta@...cle.com>,
        "David S. Miller" <davem@...emloft.net>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Ingo Molnar <mingo@...nel.org>, sparclinux@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] sparc64: Fix size check in huge_pte_alloc

Signed-off-by: Nitin Gupta <nitin.m.gupta@...cle.com>
---
 arch/sparc/mm/hugetlbpage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
index 323bc6b..3016850 100644
--- a/arch/sparc/mm/hugetlbpage.c
+++ b/arch/sparc/mm/hugetlbpage.c
@@ -261,7 +261,7 @@ pte_t *huge_pte_alloc(struct mm_struct *mm,
 		if (!pmd)
 			return NULL;
 
-		if (sz == PMD_SHIFT)
+		if (sz >= PMD_SIZE)
 			pte = (pte_t *)pmd;
 		else
 			pte = pte_alloc_map(mm, pmd, addr);
-- 
2.9.2