[PATCH 24/34] s390: handle pgtable_page_ctor() fail

[Kirill A. Shutemov]

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
---
 arch/s390/mm/pgtable.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index c463e5cd3b..b109edb90b 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -754,7 +754,11 @@ static inline unsigned long *page_table_alloc_pgste(struct mm_struct *mm,
 		__free_page(page);
 		return NULL;
 	}
-	pgtable_page_ctor(page);
+	if (!pgtable_page_ctor(page)) {
+		kfree(mp);
+		__free_page(page);
+		return NULL;
+	}
 	mp->vmaddr = vmaddr & PMD_MASK;
 	INIT_LIST_HEAD(&mp->mapper);
 	page->index = (unsigned long) mp;
@@ -884,7 +888,10 @@ unsigned long *page_table_alloc(struct mm_struct *mm, unsigned long vmaddr)
 		page = alloc_page(GFP_KERNEL|__GFP_REPEAT);
 		if (!page)
 			return NULL;
-		pgtable_page_ctor(page);
+		if (!pgtable_page_ctor(page)) {
+			__free_page(page);
+			return NULL;
+		}
 		atomic_set(&page->_mapcount, 1);
 		table = (unsigned long *) page_to_phys(page);
 		clear_table(table, _PAGE_INVALID, PAGE_SIZE);
-- 
1.8.4.rc3

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