author: Mike Rapoport <rppt@linux.vnet.ibm.com> 2017-08-02 13:32:15 -0700
committer: Linus Torvalds <torvalds@linux-foundation.org> 2017-08-02 17:16:12 -0700
commit: 9d95aa4bada24be35bb94827a55e1d6e243d866e
parent: 167d0f258fedbfc859ad4105b1ea236818d41bdd
Commit Summary:
Diffstat:
1 file changed, 2 insertions, 0 deletions
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index cadcd12a3d35..2d8c2d848668 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -1643,6 +1643,8 @@ static int userfaultfd_zeropage(struct userfaultfd_ctx *ctx,
ret = mfill_zeropage(ctx->mm, uffdio_zeropage.range.start,
uffdio_zeropage.range.len);
mmput(ctx->mm);
+ } else {
+ return -ENOSPC;
}
if (unlikely(put_user(ret, &user_uffdio_zeropage->zeropage)))
return -EFAULT;