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drm/amdgpu: add missing size check in amdgpu_debugfs_gprwave_read()

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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>
This commit is contained in:
Alex Deucher
2024-10-23 16:52:08 -04:00
parent 7ba9395430
commit f5d873f582
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
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@@ -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);