Make sure the copy succeeded. Also fixes a warning. Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c index 455978781380..1f98ce4e56f2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_securedisplay.c @@ -101,7 +101,9 @@ static ssize_t amdgpu_securedisplay_debugfs_write(struct file *f, const char __u return -EINVAL; memset(str, 0, sizeof(str)); - copy_from_user(str, buf, size); + ret = copy_from_user(str, buf, size); + if (ret >= size) + return -EINVAL; ret = pm_runtime_get_sync(dev->dev); if (ret < 0) { -- 2.29.2 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx