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Merge branch 'drm-misc-next-fixes' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

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- Mask mode type garbage from userspace (Ville)

Something went wrong on the misc tree side, but I'll pull the patch directly.

* 'drm-misc-next-fixes' of git://anongit.freedesktop.org/drm/drm-misc:
  drm: Fix uabi regression by allowing garbage mode->type from userspace
This commit is contained in:
Dave Airlie 2018-03-29 09:25:13 +10:00
commit 694f54f680
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/drm_modes.c
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@ -1611,7 +1611,13 @@ int drm_mode_convert_umode(struct drm_device *dev,
out->vscan = in->vscan;
out->vrefresh = in->vrefresh;
out->flags = in->flags;
out->type = in->type;
/*
* Old xf86-video-vmware (possibly others too) used to
* leave 'type' unititialized. Just ignore any bits we
* don't like. It's a just hint after all, and more
* useful for the kernel->userspace direction anyway.
*/
out->type = in->type & DRM_MODE_TYPE_ALL;
strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
out->name[DRM_DISPLAY_MODE_LEN-1] = 0;