On Fri, Nov 21, 2014 at 09:27:04PM +0100, Thierry Reding wrote: > On Sat, Nov 22, 2014 at 03:10:01AM +0800, Yao Cheng wrote: > > on vlv, if ipvr is installed, it need be manually unloaded before > > i915, otherwise user might run into use-after-free issue. > > Huh? That doesn't sound right. What exactly is it that's going wrong? > You should never have to do this. If you do you're almost certainly > doing something wrong in the kernel module. It's the hilarity called platform devices. Removing them is somewhat racy, so doing that upfront makes the entire thing a bit safer. The use after free is on the text, since grabbing a module refcount for the platform device doesn't work (it would pin the module forever). -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
