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| author | Miaoqian Lin <linmq006@gmail.com> | 2022-02-04 01:30:08 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-23 12:06:05 +0100 |
| commit | 92e25b637cd4e010f776c86e4810300e773eac5c (patch) | |
| tree | c0de691556da6c66427be739fcd3c808a8a20cbb | |
| parent | 50a37fd45bbdba319768062394598496198d3462 (diff) | |
| download | linux-92e25b637cd4e010f776c86e4810300e773eac5c.tar.gz linux-92e25b637cd4e010f776c86e4810300e773eac5c.tar.bz2 linux-92e25b637cd4e010f776c86e4810300e773eac5c.zip | |
Drivers: hv: vmbus: Fix memory leak in vmbus_add_channel_kobj
[ 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@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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 392c1ac4f819..44bd0b6ff505 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -2027,8 +2027,10 @@ 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); @@ -2037,6 +2039,7 @@ 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; } |