On Tue, Nov 16, 2021 at 02:30:59PM +0100, Ansuel Smith wrote:
> > On Mon, Nov 15, 2021 at 07:08:30PM +0100, Ansuel Smith wrote:
> > > > tree:   
> > > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git   
> > > > master
> > > > head:   debe436e77c72fcee804fb867f275e6d31aa999c
> > > > commit: 5654ec78dd7e64b1e04777b24007344329e6a63b net: dsa: qca8k: 
> > > > rework rgmii delay logic and scan for cpu port 6
> > > > config: i386-randconfig-m021-20211025 (attached as .config)
> > > > compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
> > > >
> > > > If you fix the issue, kindly add following tag as appropriate
> > > > Reported-by: kernel test robot <[email protected]>
> > > > Reported-by: Dan Carpenter <[email protected]>
> > > >
> > >
> > > This should already be fixed by 06dd34a628ae5b6a839b757e746de165d6789ca8
> > > Can you confirm this?
> > >
> >
> > No, it doesn't fix the problem.  The check is either useless and should
> > be removed or there is an out of bounds bug.  Checking for an out of
> > bounds *after* you've already written to the memory is *never* useful.
> >
> > regards,
> > dan carpenter
> >
> 
> Again sorry if I insist and I'm 99% missing something.
> There was an out of bounds bug.
> It was fixed by 06dd34a628ae5b6a839b757e746de165d6789ca8 by
> starting the counter to -1.
> The extra check is useless, yes.

Then just delete it.  We don't want code which is illogical even if it
has no effect on run time.

regards,
dan carpenter
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