diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2022-11-14 23:26:36 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-11-30 16:13:17 -0800 |
| commit | e92a216d16bde65d21a3227e0fb2aa0794576525 (patch) | |
| tree | adc0eeb86eaf74ea5069e7552e8100ea11b4ea23 /drivers/rapidio | |
| parent | f9574cd48679926e2a569e1957a5a1bcc8a719ac (diff) | |
| download | linux-e92a216d16bde65d21a3227e0fb2aa0794576525.tar.gz | |
rapidio: rio: fix possible name leak in rio_register_mport()
If device_register() returns error, the name allocated by dev_set_name()
need be freed. It should use put_device() to give up the reference in the
error path, so that the name can be freed in kobject_cleanup(), and
list_del() is called to delete the port from rio_mports.
Link: https://lkml.kernel.org/r/20221114152636.2939035-3-yangyingliang@huawei.com
Fixes: 2aaf308b95b2 ("rapidio: rework device hierarchy and introduce mport class of devices")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Cc: Alexandre Bounine <alex.bou9@gmail.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio')
| -rw-r--r-- | drivers/rapidio/rio.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c index e74cf09eeff076..9544b8ee0c963f 100644 --- a/drivers/rapidio/rio.c +++ b/drivers/rapidio/rio.c @@ -2186,11 +2186,16 @@ int rio_register_mport(struct rio_mport *port) atomic_set(&port->state, RIO_DEVICE_RUNNING); res = device_register(&port->dev); - if (res) + if (res) { dev_err(&port->dev, "RIO: mport%d registration failed ERR=%d\n", port->id, res); - else + mutex_lock(&rio_mport_list_lock); + list_del(&port->node); + mutex_unlock(&rio_mport_list_lock); + put_device(&port->dev); + } else { dev_dbg(&port->dev, "RIO: registered mport%d\n", port->id); + } return res; } |