On Mon, 22 Oct 2018 at 07:22, Michael Tirado <mtirado418@xxxxxxxxx> wrote: > > Mapping a drm "dumb" buffer fails on 32-bit system (i686) from what > appears to be a truncated memory address that has been copied > throughout several files. The bug manifests as an -EINVAL when calling > mmap with the offset gathered from DRM_IOCTL_MODE_MAP_DUMB <-- > DRM_IOCTL_MODE_ADDFB <-- DRM_IOCTL_MODE_CREATE_DUMB. I can provide > test code if needed. > > The following patch will apply to 4.18 though I've only been able to > test through qemu bochs driver and nouveau. Intel driver worked > without any issues. I'm not sure if everyone is going to want to > share a constant, and the whitespace is screwed up from gmail's awful > javascript client, so let me know if I should resend this with any > specific changes. I have also attached the file with preserved > whitespace. > This shouldn't be necessary, did someone misbackport the mmap changes without: drm: set FMODE_UNSIGNED_OFFSET for drm files Dave. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
