linux-kernel - [PATCH AUTOSEL 4.18 105/131] f2fs: Fix uninitialized return in f2fs_ioc

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Date:   Sun, 2 Sep 2018 13:05:15 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Dan Carpenter <dan.carpenter@...cle.com>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL 4.18 105/131] f2fs: Fix uninitialized return in
 f2fs_ioc_shutdown()

From: Dan Carpenter <dan.carpenter@...cle.com>

[ Upstream commit 2a96d8ad94ce57cb0072f7a660b1039720c47716 ]

"ret" can be uninitialized on the success path when "in ==
F2FS_GOING_DOWN_FULLSYNC".

Fixes: 60b2b4ee2bc0 ("f2fs: Fix deadlock in shutdown ioctl")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Reviewed-by: Chao Yu <yuchao0@...wei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 fs/f2fs/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 6880c6f78d58..73c875c81ed6 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1866,7 +1866,7 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
 	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 	struct super_block *sb = sbi->sb;
 	__u32 in;
-	int ret;
+	int ret = 0;
 
 	if (!capable(CAP_SYS_ADMIN))
 		return -EPERM;
-- 
2.17.1