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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2023-02-04 01:43:29 +0100 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2023-02-04 01:58:44 +0100 |
| commit | 79c81d137d36f9635bbcbc3916c0cccb418a61dd (patch) | |
| tree | 679d083f7e5c734ad83f167cd5b1e476faf28a41 /drivers/input | |
| parent | Input: synaptics-rmi4 - fix SPI device ID (diff) | |
| download | linux-79c81d137d36f9635bbcbc3916c0cccb418a61dd.tar.xz linux-79c81d137d36f9635bbcbc3916c0cccb418a61dd.zip | |
Input: exc3000 - properly stop timer on shutdown
We need to stop the timer on driver unbind or probe failures, otherwise
we get UAF/Oops.
Fixes: 7e577a17f2ee ("Input: add I2C attached EETI EXC3000 multi touch driver")
Reported-by: "Stahl, Michael" <mstahl@moba.de>
Link: https://lore.kernel.org/r/Y9dK57BFqtlf8NmN@google.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/touchscreen/exc3000.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/exc3000.c b/drivers/input/touchscreen/exc3000.c index 4b7eee01c6aa..69eae79e2087 100644 --- a/drivers/input/touchscreen/exc3000.c +++ b/drivers/input/touchscreen/exc3000.c @@ -109,6 +109,11 @@ static inline void exc3000_schedule_timer(struct exc3000_data *data) mod_timer(&data->timer, jiffies + msecs_to_jiffies(EXC3000_TIMEOUT_MS)); } +static void exc3000_shutdown_timer(void *timer) +{ + timer_shutdown_sync(timer); +} + static int exc3000_read_frame(struct exc3000_data *data, u8 *buf) { struct i2c_client *client = data->client; @@ -386,6 +391,11 @@ static int exc3000_probe(struct i2c_client *client) if (error) return error; + error = devm_add_action_or_reset(&client->dev, exc3000_shutdown_timer, + &data->timer); + if (error) + return error; + error = devm_request_threaded_irq(&client->dev, client->irq, NULL, exc3000_interrupt, IRQF_ONESHOT, client->name, data); |