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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2018-02-08 08:51:51 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-02-08 11:30:00 +0000 |
| commit | 11a18f631959fd1ca10856c836a827683536770c (patch) | |
| tree | 5abe5c673fdc4f3d8415e70c30a68d9b6ee33d8a /drivers/gpu/drm | |
| parent | 253a281727d552200c4cddb0cc08cb2e95939603 (diff) | |
| download | linux-11a18f631959fd1ca10856c836a827683536770c.tar.bz2 | |
drm/i915: Avoid truncation before clamping userspace's priority value
Userspace provides a 64b value for the priority, we need to be careful
to preserve the full range before validation to prevent truncation (and
letting an illegal value pass).
Reported-by: Antonio Argenziano <antonio.argenziano@intel.com>
Fixes: ac14fbd460d0 ("drm/i915/scheduler: Support user-defined priorities")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Antonio Argenziano <antonio.argenziano@intel.com>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180208085151.11480-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_context.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index dd9efb9d0e0b..7ccba6c786ae 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -804,7 +804,7 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data, case I915_CONTEXT_PARAM_PRIORITY: { - int priority = args->value; + s64 priority = args->value; if (args->size) ret = -EINVAL; |