From: Martin Wilck <mwilck@suse.com>
Date: Wed, 25 Jul 2018 23:15:08 +0200
Subject: blkdev: __blkdev_direct_IO_simple: fix leak in error case
Git-commit: 9362dd1109f87a9d0a798fbc890cb339c171ed35
Patch-mainline: v4.18-rc7
References: bsc#1083663

Fixes: 72ecad22d9f1 ("block: support a full bio worth of IO for simplified bdev direct-io")
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 fs/block_dev.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -230,7 +230,7 @@ __blkdev_direct_IO_simple(struct kiocb *
 
 	ret = bio_iov_iter_get_pages(&bio, iter);
 	if (unlikely(ret))
-		return ret;
+		goto out;
 	ret = bio.bi_iter.bi_size;
 
 	if (iov_iter_rw(iter) == READ) {
@@ -259,12 +259,13 @@ __blkdev_direct_IO_simple(struct kiocb *
 		put_page(bvec->bv_page);
 	}
 
-	if (vecs != inline_vecs)
-		kfree(vecs);
-
 	if (unlikely(bio.bi_status))
 		ret = blk_status_to_errno(bio.bi_status);
 
+out:
+	if (vecs != inline_vecs)
+		kfree(vecs);
+
 	bio_uninit(&bio);
 
 	return ret;