netdev - Re: [PATCH net-next v6 8/8] ax.25: x.25: Remove the now superfluous sentinel elements from ctl

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Message-ID: <20240503121811.fsmriwsgugzm2o7i@joelS2.panther.com>
Date: Fri, 3 May 2024 14:18:11 +0200
From: Joel Granados <j.granados@...sung.com>
To: Sabrina Dubroca <sd@...asysnail.net>
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Subject: Re: [PATCH net-next v6 8/8] ax.25: x.25: Remove the now superfluous
 sentinel elements from ctl_table array

On Wed, May 01, 2024 at 03:15:54PM +0200, Sabrina Dubroca wrote:
> 2024-05-01, 11:29:32 +0200, Joel Granados via B4 Relay wrote:
> > From: Joel Granados <j.granados@...sung.com>
> > 
> > This commit comes at the tail end of a greater effort to remove the
> > empty elements at the end of the ctl_table arrays (sentinels) which will
> > reduce the overall build time size of the kernel and run time memory
> > bloat by ~64 bytes per sentinel (further information Link :
> > https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/)
> > 
> > Avoid a buffer overflow when traversing the ctl_table by ensuring that
> > AX25_MAX_VALUES is the same as the size of ax25_param_table. This is
> > done with a BUILD_BUG_ON where ax25_param_table is defined and a
> > CONFIG_AX25_DAMA_SLAVE guard in the unnamed enum definition as well as
> > in the ax25_dev_device_up and ax25_ds_set_timer functions.
>                                 ^^
> nit:                            not anymore ;)
> (but not worth a repost IMO)
> 
> 
> > diff --git a/net/ax25/ax25_ds_timer.c b/net/ax25/ax25_ds_timer.c
> > index c4f8adbf8144..c50a58d9e368 100644
> > --- a/net/ax25/ax25_ds_timer.c
> > +++ b/net/ax25/ax25_ds_timer.c
> > @@ -55,6 +55,7 @@ void ax25_ds_set_timer(ax25_dev *ax25_dev)
> >  	ax25_dev->dama.slave_timeout =
> >  		msecs_to_jiffies(ax25_dev->values[AX25_VALUES_DS_TIMEOUT]) / 10;
> >  	mod_timer(&ax25_dev->dama.slave_timer, jiffies + HZ);
> > +	return;
> 
> nit: return not needed here since we're already at the bottom of the
> function, but probably not worth a repost of the series.
> 
Thx. I will not repost, but I have changed them locally so they are
there in case a V7 is required.

Best
-- 

Joel Granados

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