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authorGuoqing Jiang <guoqing.jiang@cloud.ionos.com>2020-11-26 11:47:22 +0100
committerJens Axboe <axboe@kernel.dk>2020-12-04 09:41:10 -0700
commitd3a95ccaaf4df94743a958c90ab85f4703e3a687 (patch)
tree27546f078a969af51fa659df840c95acad9c5485 /drivers/block/rnbd
parent765c5c56ffde0a555ce69559ab275395fb1a12a9 (diff)
block/rnbd: call kobject_put in the failure path
Per the comment of kobject_init_and_add, we need to cleanup the memory by call kobject_put. Also we need to call kobject_del for the other failure cases if the kobject_init_and_add doesn't fail. Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com> Reviewed-by: Md Haris Iqbal <haris.iqbal@cloud.ionos.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/rnbd')
-rw-r--r--drivers/block/rnbd/rnbd-clt-sysfs.c4
-rw-r--r--drivers/block/rnbd/rnbd-srv-sysfs.c28
2 files changed, 19 insertions, 13 deletions
diff --git a/drivers/block/rnbd/rnbd-clt-sysfs.c b/drivers/block/rnbd/rnbd-clt-sysfs.c
index 5d3c3c80dab4..e3c3270b0cee 100644
--- a/drivers/block/rnbd/rnbd-clt-sysfs.c
+++ b/drivers/block/rnbd/rnbd-clt-sysfs.c
@@ -450,9 +450,11 @@ static int rnbd_clt_add_dev_kobj(struct rnbd_clt_dev *dev)
ret = kobject_init_and_add(&dev->kobj, &rnbd_dev_ktype, gd_kobj, "%s",
"rnbd");
- if (ret)
+ if (ret) {
rnbd_clt_err(dev, "Failed to create device sysfs dir, err: %d\n",
ret);
+ kobject_put(&dev->kobj);
+ }
return ret;
}
diff --git a/drivers/block/rnbd/rnbd-srv-sysfs.c b/drivers/block/rnbd/rnbd-srv-sysfs.c
index 08ffb492ebfa..05ffe488ddc6 100644
--- a/drivers/block/rnbd/rnbd-srv-sysfs.c
+++ b/drivers/block/rnbd/rnbd-srv-sysfs.c
@@ -47,13 +47,17 @@ int rnbd_srv_create_dev_sysfs(struct rnbd_srv_dev *dev,
ret = kobject_init_and_add(&dev->dev_kobj, &dev_ktype,
rnbd_devs_kobj, dev_name);
- if (ret)
+ if (ret) {
+ kobject_put(&dev->dev_kobj);
return ret;
+ }
dev->dev_sessions_kobj = kobject_create_and_add("sessions",
&dev->dev_kobj);
- if (!dev->dev_sessions_kobj)
- goto put_dev_kobj;
+ if (!dev->dev_sessions_kobj) {
+ ret = -ENOMEM;
+ goto free_dev_kobj;
+ }
bdev_kobj = &disk_to_dev(bdev->bd_disk)->kobj;
ret = sysfs_create_link(&dev->dev_kobj, bdev_kobj, "block_dev");
@@ -64,7 +68,8 @@ int rnbd_srv_create_dev_sysfs(struct rnbd_srv_dev *dev,
put_sess_kobj:
kobject_put(dev->dev_sessions_kobj);
-put_dev_kobj:
+free_dev_kobj:
+ kobject_del(&dev->dev_kobj);
kobject_put(&dev->dev_kobj);
return ret;
}
@@ -196,18 +201,17 @@ int rnbd_srv_create_dev_session_sysfs(struct rnbd_srv_sess_dev *sess_dev)
ret = kobject_init_and_add(&sess_dev->kobj, &rnbd_srv_sess_dev_ktype,
sess_dev->dev->dev_sessions_kobj, "%s",
sess_dev->sess->sessname);
- if (ret)
+ if (ret) {
+ kobject_put(&sess_dev->kobj);
return ret;
+ }
ret = sysfs_create_group(&sess_dev->kobj,
&rnbd_srv_default_dev_session_attr_group);
- if (ret)
- goto err;
-
- return 0;
-
-err:
- kobject_put(&sess_dev->kobj);
+ if (ret) {
+ kobject_del(&sess_dev->kobj);
+ kobject_put(&sess_dev->kobj);
+ }
return ret;
}