From: Miaoqian Lin <linmq006@xxxxxxxxx>
[ Upstream commit 8bc69f86328e87a0ffa79438430cc82f3aa6a194 ]
kobject_init_and_add() takes reference even when it fails.
According to the doc of kobject_init_and_add()：
If this function returns an error, kobject_put() must be called to
properly clean up the memory associated with the object.
Fix memory leak by calling kobject_put().
Fixes: c2e5df616e1a ("vmbus: add per-channel sysfs info")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Reviewed-by: Juan Vazquez <juvazq@xxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220203173008.43480-1-linmq006@xxxxxxxxx
Signed-off-by: Wei Liu <wei.liu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/hv/vmbus_drv.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 2d2568dac2a66..6b7ab8f234e87 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -1787,8 +1787,10 @@ int vmbus_add_channel_kobj(struct hv_device *dev, struct vmbus_channel *channel)
kobj->kset = dev->channels_kset;
ret = kobject_init_and_add(kobj, &vmbus_chan_ktype, NULL,
"%u", relid);
- if (ret)
+ if (ret) {
+ kobject_put(kobj);
return ret;
+ }
ret = sysfs_create_group(kobj, &vmbus_chan_group);
@@ -1797,6 +1799,7 @@ int vmbus_add_channel_kobj(struct hv_device *dev, struct vmbus_channel *channel)
* The calling functions' error handling paths will cleanup the
* empty channel directory.
*/
+ kobject_put(kobj);
dev_err(device, "Unable to set up channel sysfs files\n");
return ret;
}
--
2.34.1
