[PATCH 3/4] Fix memory leak in file Manage

[miaoguanqin <miaoguanqin@huawei.com>]

When we test mdadm with asan,we found some memory leaks in Manage.c
We fix these memory leaks based on code logic.

Signed-off-by: miaoguanqin <miaoguanqin@huawei.com>
Signed-off-by: lixiaokeng <lixiaokeng@huawei.com>
---
 Manage.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/Manage.c b/Manage.c
index fde6aba3..75bed83b 100644
--- a/Manage.c
+++ b/Manage.c
@@ -222,6 +222,8 @@ int Manage_stop(char *devname, int fd, int verbose, int will_retry)
 		if (verbose >= 0)
 			pr_err("Cannot get exclusive access to %s:Perhaps a running process, mounted filesystem or active volume group?\n",
 			       devname);
+		if (mdi)
+			sysfs_free(mdi);
 		return 1;
 	}
 	/* If this is an mdmon managed array, just write 'inactive'
@@ -818,8 +820,16 @@ int Manage_add(int fd, int tfd, struct mddev_dev *dv,
 						    rdev, update, devname,
 						    verbose, array);
 				dev_st->ss->free_super(dev_st);
-				if (rv)
+				if (rv) {
+					if (dev_st)
+						free(dev_st);
 					return rv;
+				}
+			}
+			if (dev_st) {
+				if (dev_st->sb)
+					dev_st->ss->free_super(dev_st);
+				free(dev_st);
 			}
 		}
 		if (dv->disposition == 'M') {
@@ -1716,6 +1726,8 @@ int Manage_subdevs(char *devname, int fd,
 			break;
 		}
 	}
+	if (tst)
+		free(tst);
 	if (frozen > 0)
 		sysfs_set_str(&info, NULL, "sync_action","idle");
 	if (test && count == 0)
@@ -1723,6 +1735,8 @@ int Manage_subdevs(char *devname, int fd,
 	return 0;
 
 abort:
+	if (tst)
+		free(tst);
 	if (frozen > 0)
 		sysfs_set_str(&info, NULL, "sync_action","idle");
 	return !test && busy ? 2 : 1;
-- 
2.33.0