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| author | Colin Ian King <colin.king@canonical.com> | 2020-06-24 13:07:10 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-07-01 01:59:26 -0400 |
| commit | 7ee78aff9de13d5dccba133f4a0de5367194b243 (patch) | |
| tree | 988ad09c07bf54311a2d0ea6f6a0c0f72d9d4691 | |
| parent | 57f01856645afe4c3d0f9915ee2bb043e8dd7982 (diff) | |
| download | linux-7ee78aff9de13d5dccba133f4a0de5367194b243.tar.bz2 | |
drm/radeon: fix array out-of-bounds read and write issues
There is an off-by-one bounds check on the index into arrays
table->mc_reg_address and table->mc_reg_table_entry[k].mc_data[j] that
can lead to reads and writes outside of arrays. Fix the bound checking
off-by-one error.
Addresses-Coverity: ("Out-of-bounds read/write")
Fixes: cc8dbbb4f62a ("drm/radeon: add dpm support for CI dGPUs (v2)")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/ci_dpm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c index 134aa2b01f90..86ac032275bb 100644 --- a/drivers/gpu/drm/radeon/ci_dpm.c +++ b/drivers/gpu/drm/radeon/ci_dpm.c @@ -4351,7 +4351,7 @@ static int ci_set_mc_special_registers(struct radeon_device *rdev, table->mc_reg_table_entry[k].mc_data[j] |= 0x100; } j++; - if (j > SMU7_DISCRETE_MC_REGISTER_ARRAY_SIZE) + if (j >= SMU7_DISCRETE_MC_REGISTER_ARRAY_SIZE) return -EINVAL; if (!pi->mem_gddr5) { |