diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2015-03-12 17:10:37 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-03-20 11:48:09 +0100 |
| commit | e6bda3e4cb439679946c9378628d906ab32bf590 (patch) | |
| tree | 975febf171bef7206ccf9e9aed543ea3af325658 /drivers/gpu/drm/i915/intel_dp.c | |
| parent | ed4e9c1d46980e76254573ccd59efb3e8aec77d2 (diff) | |
drm/i915: Avoid overflowing the DP link rate arrays
Complain loudly if we ever attempt to overflow the the supported_rates[]
array. This should never happen since the sink_rates[] array will always
be smaller or of equal size. But should someone change that we want to
catch it without scribblign over the stack.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Sonika Jindal <sonika.jindal@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index c02e022ace70..ff0aa6f87679 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1203,6 +1203,8 @@ static int intersect_rates(const int *source_rates, int source_len, while (i < source_len && j < sink_len) { if (source_rates[i] == sink_rates[j]) { + if (WARN_ON(k >= DP_MAX_SUPPORTED_RATES)) + return k; supported_rates[k] = source_rates[i]; ++k; ++i; |