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Fix a bound check in the DMC fw load. 

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Merge tag 'drm-intel-fixes-2021-12-15' of ssh://git.freedesktop.org/git/drm/drm-intel into drm-fixes

Fix a bound check in the DMC fw load.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YbnGvnsX/H3rKAqO@intel.com
This commit is contained in:
Dave Airlie 2021-12-16 10:22:23 +10:00
parent 2585cf9dfa 53b3495273
commit c9f0322c46
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/display/intel_dmc.c
View File

@ -596,7 +596,7 @@ static void parse_dmc_fw(struct drm_i915_private *dev_priv,
continue;
offset = readcount + dmc->dmc_info[id].dmc_offset * 4;
if (fw->size - offset < 0) {
if (offset > fw->size) {
drm_err(&dev_priv->drm, "Reading beyond the fw_size\n");
continue;
}