On 7/5/22 12:02, Javier Martinez Canillas wrote: > Hello, > > Peter Robinson reported me a kernel bug in one of his aarch64 test boards > and even though I was not able to reproduce it, I think that figured out > what the problem was. It seems the cause is that a DRM driver doesn't set > some of the struct drm fields copied to userspace via DRM_IOCTL_VERSION. > > Even though this is a driver bug, we can make drm_copy_field() more robust > and warn about it instead of leading to an attempt to copy a NULL pointer. > > While looking at this, I also found that a variable in drm_copy_field() is > not using the correct type. So I included that change in the patch-set too. > Pushed these to drm-misc (drm-misc-next). Thanks! -- Best regards, Javier Martinez Canillas Linux Engineering Red Hat
