This is a note to let you know that I've just added the patch titled
Input: synaptics-rmi4 - fail probing if memory allocation for "phys" fails
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
input-synaptics-rmi4-fail-probing-if-memory-allocati.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e31ca083333a5706b32a1e741ef0edcc135f19c6
Author: Kunwu Chan <chentao@xxxxxxxxxx>
Date: Thu Jan 18 11:37:59 2024 -0800
Input: synaptics-rmi4 - fail probing if memory allocation for "phys" fails
[ Upstream commit bc4996184d56cfaf56d3811ac2680c8a0e2af56e ]
While input core can work with input->phys set to NULL userspace might
depend on it, so better fail probing if allocation fails. The system must
be in a pretty bad shape for it to happen anyway.
Signed-off-by: Kunwu Chan <chentao@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240117073124.143636-1-chentao@xxxxxxxxxx
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index ac6a20f7afdfa..0da814b41e72b 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -1199,7 +1199,11 @@ static int rmi_driver_probe(struct device *dev)
}
rmi_driver_set_input_params(rmi_dev, data->input);
data->input->phys = devm_kasprintf(dev, GFP_KERNEL,
- "%s/input0", dev_name(dev));
+ "%s/input0", dev_name(dev));
+ if (!data->input->phys) {
+ retval = -ENOMEM;
+ goto err;
+ }
}
retval = rmi_init_functions(data);
