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| author | Alex Deucher <alexander.deucher@amd.com> | 2024-10-23 16:52:08 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-11-05 10:35:59 -0500 |
| commit | f5d873f5825b40d886d03bd2aede91d4cf002434 (patch) | |
| tree | 310746d73528deefebf72a59dc83effbc438cea2 /drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | |
| parent | 7ba9395430f611cfc101b1c2687732baafa239d5 (diff) | |
| download | lwn-f5d873f5825b40d886d03bd2aede91d4cf002434.tar.gz lwn-f5d873f5825b40d886d03bd2aede91d4cf002434.zip | |
drm/amdgpu: add missing size check in amdgpu_debugfs_gprwave_read()
Avoid a possible buffer overflow if size is larger than 4K.
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c index 0cb3ba448c6c..a68338cb7b4a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c @@ -402,7 +402,7 @@ static ssize_t amdgpu_debugfs_gprwave_read(struct file *f, char __user *buf, siz int r; uint32_t *data, x; - if (size & 0x3 || *pos & 0x3) + if (size > 4096 || size & 0x3 || *pos & 0x3) return -EINVAL; r = pm_runtime_get_sync(adev_to_drm(adev)->dev); |