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mdadm/SOURCES/0137-Fix-memory-leak-in-fil...

75 lines
2.1 KiB

From f6feb3fbb50f48c193e9e4d775a20aa20f7b47b3 Mon Sep 17 00:00:00 2001
From: Guanqin Miao <miaoguanqin@huawei.com>
Date: Mon, 24 Apr 2023 16:06:36 +0800
Subject: [PATCH 137/165] Fix memory leak in file Manage
When we test mdadm with asan, we found some memory leaks in Manage.c
We fix these memory leaks based on code logic.
v2: Fix free() of uninitialized 'tst' in abort path.
Signed-off-by: Guanqin Miao <miaoguanqin@huawei.com>
Signed-off-by: Li Xiao Keng <lixiaokeng@huawei.com>
Acked-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
Signed-off-by: Jes Sorensen <jes@trained-monkey.org>
---
Manage.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/Manage.c b/Manage.c
index f54de7c6..f997b163 100644
--- a/Manage.c
+++ b/Manage.c
@@ -222,6 +222,7 @@ 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);
+ sysfs_free(mdi);
return 1;
}
/* If this is an mdmon managed array, just write 'inactive'
@@ -801,8 +802,14 @@ 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) {
+ free(dev_st);
return rv;
+ }
+ }
+ if (dev_st) {
+ dev_st->ss->free_super(dev_st);
+ free(dev_st);
}
}
if (dv->disposition == 'M') {
@@ -1362,7 +1369,7 @@ int Manage_subdevs(char *devname, int fd,
unsigned long long array_size;
struct mddev_dev *dv;
int tfd = -1;
- struct supertype *tst;
+ struct supertype *tst = NULL;
char *subarray = NULL;
int sysfd = -1;
int count = 0; /* number of actions taken */
@@ -1699,6 +1706,7 @@ int Manage_subdevs(char *devname, int fd,
break;
}
}
+ free(tst);
if (frozen > 0)
sysfs_set_str(&info, NULL, "sync_action","idle");
if (test && count == 0)
@@ -1706,6 +1714,7 @@ int Manage_subdevs(char *devname, int fd,
return 0;
abort:
+ free(tst);
if (frozen > 0)
sysfs_set_str(&info, NULL, "sync_action","idle");
return !test && busy ? 2 : 1;
--
2.40.1