f2fs: Fix uninitialized return in f2fs_ioc_shutdown()

BugLink: https://bugs.launchpad.net/bugs/1836117
[ 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@oracle.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 729dba0cc210e5a2ad1eb001df47321f415153d1..cf873376a7037a7690e5bd7d7def92fa3c4aea13 100644 (file)
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1842,7 +1842,7 @@ 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;