From: Kinglong Mee <kinglongmee@gmail.com>
Date: Fri, 10 Mar 2017 09:54:26 +0000 (+0800)
Subject: f2fs: avoid copy date to user-space if move file range fail
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3cecfa5f6700c07ef943ab3d457f82f9868c4bfa;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

f2fs: avoid copy date to user-space if move file range fail

If move file range return error, the data copied to user-space is duplicate.

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index c3c475675d77..cbde4d23e817 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2208,6 +2208,8 @@ static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
 					range.pos_out, range.len);
 
 	mnt_drop_write_file(filp);
+	if (err)
+		goto err_out;
 
 	if (copy_to_user((struct f2fs_move_range __user *)arg,
 						&range, sizeof(range)))