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authorMiaoqian Lin <linmq006@gmail.com>2022-02-03 20:30:08 +0300
committerWei Liu <wei.liu@kernel.org>2022-02-07 20:52:22 +0300
commit8bc69f86328e87a0ffa79438430cc82f3aa6a194 (patch)
tree47d6730bbb16206ae674374ea22223bccd583d83 /drivers/hv
parent3149efcdf2c6314420c418dfc94de53bfd076b1f (diff)
downloadlinux-8bc69f86328e87a0ffa79438430cc82f3aa6a194.tar.xz
Drivers: hv: vmbus: Fix memory leak in vmbus_add_channel_kobj
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@gmail.com> Reviewed-by: Juan Vazquez <juvazq@linux.microsoft.com> Link: https://lore.kernel.org/r/20220203173008.43480-1-linmq006@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/vmbus_drv.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 17bf55fe3169..34a4fd21bdf5 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -2028,8 +2028,10 @@ 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);
@@ -2038,6 +2040,7 @@ 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;
}