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| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2017-10-31 11:23:25 +0100 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2017-11-08 19:19:45 +0100 |
| commit | 40a4884512d5bf9ed3a9cb162b8a7ec3306b6cfc (patch) | |
| tree | da0b4156263cba25b94ee051ccace5df4e9eedb5 /drivers/gpu | |
| parent | Linux 4.14-rc8 (diff) | |
| download | linux-40a4884512d5bf9ed3a9cb162b8a7ec3306b6cfc.tar.xz linux-40a4884512d5bf9ed3a9cb162b8a7ec3306b6cfc.zip | |
drm/i915: Reject unknown syncobj flags
We have to reject unknown flags for uAPI considerations, and also
because the curent implementation limits their i915 storage space
to two bits.
v2: (Chris Wilson)
* Fix fail in ABI check.
* Added unknown flags and BUILD_BUG_ON.
v3:
* Use ARCH_KMALLOC_MINALIGN instead of alignof. (Chris Wilson)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: cf6e7bac6357 ("drm/i915: Add support for drm syncobjs")
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: intel-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171031102326.9738-1-tvrtko.ursulin@linux.intel.com
(cherry picked from commit ebcaa1ff8b59097805d548fe7a676f194625c033)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_execbuffer.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 4ac454ae54d7..83876a1c8d98 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -2094,6 +2094,11 @@ get_fence_array(struct drm_i915_gem_execbuffer2 *args, goto err; } + if (fence.flags & __I915_EXEC_FENCE_UNKNOWN_FLAGS) { + err = -EINVAL; + goto err; + } + syncobj = drm_syncobj_find(file, fence.handle); if (!syncobj) { DRM_DEBUG("Invalid syncobj handle provided\n"); @@ -2101,6 +2106,9 @@ get_fence_array(struct drm_i915_gem_execbuffer2 *args, goto err; } + BUILD_BUG_ON(~(ARCH_KMALLOC_MINALIGN - 1) & + ~__I915_EXEC_FENCE_UNKNOWN_FLAGS); + fences[n] = ptr_pack_bits(syncobj, fence.flags, 2); } |