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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2013-11-14 14:31:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-15 09:32:18 +0900
commite89cfa58a8358fdb4d4e79936c25222416ad415e (patch)
tree55ff424692ee34c8f1fa60c1366b10afde1dfde7 /arch/s390/mm
parent4f804943f99454ac79e0f448428447f1a72d09fc (diff)
s390: handle pgtable_page_ctor() fail
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390/mm')
-rw-r--r--arch/s390/mm/pgtable.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 1ea18fcfa211..e794c88f699a 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -772,7 +772,11 @@ 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;
@@ -902,7 +906,10 @@ 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);