Thanks for the reply Lucas. It makes sense now!
> On 15 Jun 2024, at 12:18 AM, Lucas De Marchi <lucas.demar...@intel.com> wrote: > > On Thu, Jun 06, 2024 at 06:49:59AM GMT, Aditya Garg wrote: >> Hi >> >> I am Aditya Garg. I often require using out of tree drivers to support >> various hardwares on Linux. Sometimes the provider doesn't write good >> drivers, and often they have to be force unloaded. It's a common thing in >> proprietary drivers. I know the author of the driver should take note of the >> issues, but still the force unloading of the modules does come in handy many >> times. >> >> Unfortunately if CONFIG_MODULE_FORCE_UNLOAD is not enabled in your kernel, >> which most probably is not enabled if you are using a Distribution pre >> compiled kernel, you have to recompile the whole kernel again. > > CONFIG_MODULE_FORCE_UNLOAD only ever makes sense on a developer > environment loading/unloading multiple times his own .ko module. Then > the developer knows better the state of the driver and hw to judge if > it's safe to ignore krefs. > >> >> I want wondering if instead of a kernel config option, we could use a kernel >> parameter to enable/disable this feature, I believe it should act as a >> better alternative. After all there must be people like me who are forced to >> recompile the whole linux kernel just for the sake of getting a >> functionality. > > Just allowing it like this is not a good thing. You may have a all kind > of issues with use after free, dangling pointers etc. That would just > make life harder for people not involved with proprietary modules. > > >> I hope for a reply and suggestions > > I´d ask them to upstream their driver and start sending the issues to > their side. > > Lucas De Marchi > >> >> Regards >> Aditya
