iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

scsi: scsi_debug: Fix possible name leak in sdebug_add_host_helper()

Browse Source 
[ Upstream commit e6d773f93a49e0eda88a903a2a6542ca83380eb1 ]

Afer commit 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id
string array"), the name of device is allocated dynamically, it needs be
freed when device_register() returns error.

As comment of device_register() says, one should use put_device() to give
up the reference in the error path. Fix this by calling put_device(), then
the name can be freed in kobject_cleanup(), and sdbg_host is freed in
sdebug_release_adapter().

When the device release is not set, it means the device is not initialized.
We can not call put_device() in this case. Use kfree() to free memory.

Fixes: 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221112131010.3757845-1-yangyingliang@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yang Yingliang 2022-11-12 21:10:10 +08:00 committed by Greg Kroah-Hartman
parent 9d0ad1e2ba
commit b520a32796
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/scsi/scsi_debug.c
View File

@ -7103,7 +7103,10 @@ clean:
kfree(sdbg_devinfo->zstate);
kfree(sdbg_devinfo);
}
kfree(sdbg_host);
if (sdbg_host->dev.release)
put_device(&sdbg_host->dev);
else
kfree(sdbg_host);
pr_warn("%s: failed, errno=%d\n", __func__, -error);
return error;
}