Hi Greg, On Fri, Dec 16, 2011 at 10:20 PM, Ming Lei <tom.leiming@xxxxxxxxx> wrote: > If usb device is disconnected between usb_get_intfdata() > and kref_get() in skel_open(), kref_get may access a freed > object. > > Also check if device is disconnected in ->open. Looks you have queued the patch into your tree, but just now I find the patch is not needed at all, since we have had minor_rwsem(drivers/usb/core/file.c) for this purpose, please drop the patch, sorry for it. thanks, -- Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html