Turns out that we have some const pointers being passed to to_usb_device_driver() but were not catching this. Change the macro to properly propagate the const-ness of the pointer so that we will notice when we try to write to memory that we shouldn't be writing to. This requires fixing up the usb_driver_applicable() function as well, because it can handle a const * to struct usb_driver. Cc: Johan Hovold <johan@xxxxxxxxxx> Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> Cc: Grant Grundler <grundler@xxxxxxxxxxxx> Cc: Yajun Deng <yajun.deng@xxxxxxxxx> Cc: Oliver Neukum <oneukum@xxxxxxxx> Cc: Douglas Anderson <dianders@xxxxxxxxxxxx> Cc: linux-usb@xxxxxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- v2: reordered patches, goes on top of series submitted at https://lore.kernel.org/r/2024111322-kindly-finalist-d247@gregkh drivers/usb/core/driver.c | 4 ++-- drivers/usb/core/usb.h | 2 +- include/linux/usb.h | 3 +-- 3 files changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index bc5c561bdbd5..f203fdbfb6f6 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -850,7 +850,7 @@ const struct usb_device_id *usb_device_match_id(struct usb_device *udev, EXPORT_SYMBOL_GPL(usb_device_match_id); bool usb_driver_applicable(struct usb_device *udev, - struct usb_device_driver *udrv) + const struct usb_device_driver *udrv) { if (udrv->id_table && udrv->match) return usb_device_match_id(udev, udrv->id_table) != NULL && @@ -870,7 +870,7 @@ static int usb_device_match(struct device *dev, const struct device_driver *drv) /* devices and interfaces are handled separately */ if (is_usb_device(dev)) { struct usb_device *udev; - struct usb_device_driver *udrv; + const struct usb_device_driver *udrv; /* interface drivers never match devices */ if (!is_usb_device_driver(drv)) diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h index b8324ea05b20..a9b37aeb515b 100644 --- a/drivers/usb/core/usb.h +++ b/drivers/usb/core/usb.h @@ -75,7 +75,7 @@ extern int usb_match_device(struct usb_device *dev, extern const struct usb_device_id *usb_device_match_id(struct usb_device *udev, const struct usb_device_id *id); extern bool usb_driver_applicable(struct usb_device *udev, - struct usb_device_driver *udrv); + const struct usb_device_driver *udrv); extern void usb_forced_unbind_intf(struct usb_interface *intf); extern void usb_unbind_and_rebind_marked_interfaces(struct usb_device *udev); diff --git a/include/linux/usb.h b/include/linux/usb.h index 7a9e96f9d886..cfa8005e24f9 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -1294,8 +1294,7 @@ struct usb_device_driver { unsigned int supports_autosuspend:1; unsigned int generic_subclass:1; }; -#define to_usb_device_driver(d) container_of(d, struct usb_device_driver, \ - driver) +#define to_usb_device_driver(d) container_of_const(d, struct usb_device_driver, driver) /** * struct usb_class_driver - identifies a USB driver that wants to use the USB major number -- 2.47.0
