Commit cadfbb6e authored Nov 10, 2015 by Al Viro Committed by Jens Axboe Nov 11, 2015

dax_io(): don't let non-error value escape via retval instead of EFAULT



Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Cc: stable@vger.kernel.org # 4.0+
Signed-off-by: Jens Axboe <axboe@fb.com>

parent ccc2600b

fs/dax.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -169,8 +169,10 @@ static ssize_t dax_io(struct inode inode, struct iov_iter iter,
		else
		len = iov_iter_zero(max - pos, iter);

		if (!len)
		if (!len) {
		retval = -EFAULT;
		break;
		}

		pos += len;
		addr += len;