On Fri, Aug 07, 2020 at 01:06:44PM +0200, Cezary Rojewski wrote: > +// SPDX-License-Identifier: GPL-2.0-pcm I'm not able to find any references to what license this is - it's not in https://spdx.org/licenses/ for example. > + struct catpt_fw_version version; > + int ret; > + > + pm_runtime_get_sync(cdev->dev); > + > + ret = catpt_ipc_get_fw_version(cdev, &version); > + > + pm_runtime_mark_last_busy(cdev->dev); > + pm_runtime_put_autosuspend(cdev->dev); > + > + if (ret) > + return CATPT_IPC_ERROR(ret); > + > + memcpy(buf, &version, count); This will copy count bytes from version regardless of the size of version - this allows userspace to read the stack and won't truncate the count to the size of the data read.
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