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| author | Alex Hung <alex.hung@amd.com> | 2024-04-17 01:30:17 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-05-02 23:18:17 +0300 |
| commit | 8aa2864044b9d13e95fe224f32e808afbf79ecdf (patch) | |
| tree | 5a68f43d5b71a1dc3d76a12de8a336471cc91ad2 | |
| parent | 52cbcf980509e6190740dd1e2a1a437e8fb8101b (diff) | |
| download | linux-8aa2864044b9d13e95fe224f32e808afbf79ecdf.tar.xz | |
drm/amd/display: Check link_index before accessing dc->links[]
[WHY & HOW]
dc->links[] has max size of MAX_LINKS and NULL is return when trying to
access with out-of-bound index.
This fixes 3 OVERRUN and 1 RESOURCE_LEAK issues reported by Coverity.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_exports.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_exports.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_exports.c index c6c35037bdb8..dfdfe22d9e85 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_exports.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_exports.c @@ -37,6 +37,9 @@ #include "dce/dce_i2c.h" struct dc_link *dc_get_link_at_index(struct dc *dc, uint32_t link_index) { + if (link_index >= MAX_LINKS) + return NULL; + return dc->links[link_index]; } |