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| author | Pan Bian <bianpan2016@163.com> | 2019-04-19 10:39:00 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-04-24 19:33:37 +0300 |
| commit | bce1a78423961fce676ac65540a31b6ffd179e6d (patch) | |
| tree | 8201f766f8de098ddcc1aa48c338b7e9a4cffae9 | |
| parent | f06eba72274788db6a43012a05a99915c0283aef (diff) | |
| download | linux-bce1a78423961fce676ac65540a31b6ffd179e6d.tar.xz | |
Input: synaptics-rmi4 - fix possible double free
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>
| -rw-r--r-- | drivers/input/rmi4/rmi_driver.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c index fc3ab93b7aea..7fb358f96195 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) |