diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/mempolicy.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index b4a039d779b0..fb678a7254f0 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -896,12 +896,15 @@ static void get_policy_nodemask(struct mempolicy *p, nodemask_t *nodes) static int lookup_node(struct mm_struct *mm, unsigned long addr) { - struct page *p; + struct page *p = NULL; int err; int locked = 1; err = get_user_pages_locked(addr & PAGE_MASK, 1, 0, &p, &locked); - if (err >= 0) { + if (err == 0) { + /* E.g. GUP interrupted by fatal signal */ + err = -EFAULT; + } else if (err > 0) { err = page_to_nid(p); put_page(p); } |