From: Kees Cook <[email protected]> In preparation for making the devm_kmalloc family of allocators type aware, we need to make sure that the returned type from the allocation matches the type of the variable being assigned. (Before, the allocator would always return "void *", which can be implicitly cast to any pointer type.)
The assigned type of "info_map[type]" is "struct hp_wmi_info **", but the converted allocation type would be "struct hp_wmi_info ***", as the size was taken from "*info_map", which is one level of indirection too many. Luckily both element types are pointers of the same size. Take the size from the element type of the assignment target. Build tested ARCH=x86_64 allmodconfig with GCC 16.2.0: drivers/hwmon/hp-wmi-sensors.o Assisted-by: LLM coccinelle Signed-off-by: Kees Cook <[email protected]> --- Cc: James Seo <[email protected]> Cc: Guenter Roeck <[email protected]> Cc: <[email protected]> --- drivers/hwmon/hp-wmi-sensors.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwmon/hp-wmi-sensors.c b/drivers/hwmon/hp-wmi-sensors.c index 03c684ba83bd..cc193a8890f2 100644 --- a/drivers/hwmon/hp-wmi-sensors.c +++ b/drivers/hwmon/hp-wmi-sensors.c @@ -1788,7 +1788,7 @@ static int init_numeric_sensors(struct hp_wmi_sensors *state, if (!info_map[type]) { info_map[type] = devm_kcalloc(dev, channel_count[type], - sizeof(*info_map), + sizeof(*info_map[type]), GFP_KERNEL); if (!info_map[type]) return -ENOMEM; -- 2.34.1
