On Fri, Feb 23, 2024 at 07:47:36PM +0200, Andy Shevchenko wrote:
> On Fri, Feb 23, 2024 at 09:29:39AM -0800, Kees Cook wrote:
> > 3 bytes were being read but 4 were being written. Explicitly initialize
> > the unused bytes to 0 and refactor the loop to use direct array
> > indexing, which appears to silence a Clang false positive warning[1].
>
> ...
>
> > for_each_set_bit(chn, indio_dev->active_scan_mask,
> > - indio_dev->masklength) {
> > - memcpy(tmp_buf + i,
> > + indio_dev->masklength) {
> > + memcpy(&tmp_buf[i++],
> > &st->rx_buf[1] + chn * DLH_NUM_DATA_BYTES,
> > DLH_NUM_DATA_BYTES);
> > - i++;
> > }
>
> Not that I'm against the changes, but they (in accordance with the commit
> message) are irrelevant to this fix. I prefer fixes to be more focused on
> the real issues.
Jonathan, let me know if you'd prefer I split this patch...
--
Kees Cook
