xtensa: fix potential NULL-pointer dereference
Add missing check for memory allocation fail. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
fecf3743b8
commit
f8c6d30b76
|
@ -51,9 +51,13 @@ static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
|
||||||
static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
|
static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
|
||||||
unsigned long addr)
|
unsigned long addr)
|
||||||
{
|
{
|
||||||
|
pte_t *pte;
|
||||||
struct page *page;
|
struct page *page;
|
||||||
|
|
||||||
page = virt_to_page(pte_alloc_one_kernel(mm, addr));
|
pte = pte_alloc_one_kernel(mm, addr);
|
||||||
|
if (!pte)
|
||||||
|
return NULL;
|
||||||
|
page = virt_to_page(pte);
|
||||||
pgtable_page_ctor(page);
|
pgtable_page_ctor(page);
|
||||||
return page;
|
return page;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue