Xin Xiong 51875dad43 atm: fix atm_dev refcnt leaks in atmtcp_remove_persistent
atmtcp_remove_persistent() invokes atm_dev_lookup(), which returns a
reference of atm_dev with increased refcount or NULL if fails.

The refcount leaks issues occur in two error handling paths. If
dev_data->persist is zero or PRIV(dev)->vcc isn't NULL, the function
returns 0 without decreasing the refcount kept by a local variable,
resulting in refcount leaks.

Fix the issue by adding atm_dev_put() before returning 0 both when
dev_data->persist is zero or PRIV(dev)->vcc isn't NULL.

Signed-off-by: Xin Xiong <xiongx18@fudan.edu.cn>
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-30 17:35:53 -07:00
..
2020-01-27 13:03:00 -08:00
2020-01-25 22:01:51 +01:00
2019-09-25 13:54:45 +02:00
2015-01-18 00:28:41 -05:00
2019-07-23 13:02:41 -07:00