linux-kernel - Re: [PATCH v2 v4.2-rc1] printk: make extended printk support conditional on netconsole

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20150703152555.GA5273@mtj.duckdns.org>
Date:	Fri, 3 Jul 2015 11:25:55 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Petr Mladek <pmladek@...e.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Kay Sievers <kay@...y.org>,
	Josh Triplett <josh@...htriplett.org>,
	Linux Embedded <linux-embedded@...r.kernel.org>,
	geert@...ux-m68k.org
Subject: Re: [PATCH v2 v4.2-rc1] printk: make extended printk support
 conditional on netconsole

On Fri, Jul 03, 2015 at 04:07:34PM +0200, Petr Mladek wrote:
> > @@ -2561,9 +2591,11 @@ void register_console(struct console *newcon)
> >  		console_drivers->next = newcon;
> >  	}
> >  
> > -	if (newcon->flags & CON_EXTENDED)
> > -		if (!nr_ext_console_drivers++)
> > +	if (newcon->flags & CON_EXTENDED) {
> > +		if (!nr_ext_console_drivers)
> >  			pr_info("printk: continuation disabled due to ext consoles, expect more fragments in /dev/kmsg\n");
> 
> I would move the check and the message into
> inc_nr_ext_console_drivers() when CONFIG_PRINTK_CON_EXTENDED is
> defined. It does not make sense if we do not increment the counter.

It doesn't make any difference as it gets compiled out anyway but yeah
moving it into the inc function makes more sense.  Updating the patch.

Thanks.

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