[ Upstream commit bce1a78423961fce676ac65540a31b6ffd179e6d ]
The RMI4 function structure has been released in rmi_register_function if error occurs. However, it will be released again in the function rmi_create_function, which may result in a double-free bug.
Signed-off-by: Pan Bian bianpan2016@163.com Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/input/rmi4/rmi_driver.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c index fc3ab93b7aea4..7fb358f961957 100644 --- a/drivers/input/rmi4/rmi_driver.c +++ b/drivers/input/rmi4/rmi_driver.c @@ -860,7 +860,7 @@ static int rmi_create_function(struct rmi_device *rmi_dev,
error = rmi_register_function(fn); if (error) - goto err_put_fn; + return error;
if (pdt->function_number == 0x01) data->f01_container = fn; @@ -870,10 +870,6 @@ static int rmi_create_function(struct rmi_device *rmi_dev, list_add_tail(&fn->node, &data->function_list);
return RMI_SCAN_CONTINUE; - -err_put_fn: - put_device(&fn->dev); - return error; }
void rmi_enable_irq(struct rmi_device *rmi_dev, bool clear_wake)