Commit 3df629d8 authored by Al Viro's avatar Al Viro
Browse files

gfs2_meta: ->mount() can get NULL dev_name 



get in sync with mount_bdev() handling of the same

Reported-by: default avatar <syzbot+c54f8e94e6bba03b04e9@syzkaller.appspotmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 74dd7c97

fs/gfs2/ops_fstype.c

+3 −0
Original line number Diff line number Diff line
@@ -1333,6 +1333,9 @@ static struct dentry *gfs2_mount_meta(struct file_system_type *fs_type, 
	struct path path;

	int error;



	if (!dev_name || !*dev_name)

		return ERR_PTR(-EINVAL);



	error = kern_path(dev_name, LOOKUP_FOLLOW, &path);

	if (error) {

		pr_warn("path_lookup on %s returned error %d\n",

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