Re: [PATCH 5/6] sysfs: add support for binary attributes in groups

From: Greg Kroah-Hartman
Date: Wed Jul 10 2013 - 20:15:34 EST


On Wed, Jul 10, 2013 at 04:59:28PM -0700, Greg Kroah-Hartman wrote:
> On Wed, Jul 10, 2013 at 04:00:57PM -0700, Guenter Roeck wrote:
> > > + for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++) {
> >
> > What happens here if grp->bin_attrs is NULL ? Doesn't that cause a NULL
> > reference when accessing *bin_attr ?
> >
> > [ The problem didn't exist before since attr was supposed to be non-NULL.
> > It may now be a problem if only bin_attr is provided, ie if there are
> > only binary attribute files.
> > Or maybe I am just tired and there is no problem... ]
>
> I thought I tested this patch out, but I think you are right, let me go
> do a rebuild and test it again...

You were right, good catch, as-is, the kernel dies at boot, I've fixed
this and will resend the series, thanks so much for the review.

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/