linux-kernel - Re: [RFC][PATCH] printk: Add option to append kernel version to the dict

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Message-ID: <20160517144257.GA582@swordfish>
Date:	Tue, 17 May 2016 23:42:57 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:	Calvin Owens <calvinowens@...com>
Cc:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Howells <dhowells@...hat.com>,
	Pranith Kumar <bobby.prani@...il.com>,
	David Woodhouse <David.Woodhouse@...el.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	Petr Mladek <pmladek@...e.com>, Tejun Heo <tj@...nel.org>,
	Vasily Averin <vvs@...tuozzo.com>,
	Thierry Reding <treding@...dia.com>,
	Geliang Tang <geliangtang@....com>,
	Ivan Delalande <colona@...sta.com>,
	linux-kernel@...r.kernel.org, kernel-team@...com
Subject: Re: [RFC][PATCH] printk: Add option to append kernel version to the
 dict

On (05/16/16 15:02), Calvin Owens wrote:
[..]
> > > @@ -2305,6 +2317,8 @@ skip:
> > >  						sizeof(ext_text) - ext_len,
> > >  						log_dict(msg), msg->dict_len,
> > >  						log_text(msg), msg->text_len);
> > > +			ext_len += msg_print_ext_uname(ext_text + ext_len,
> > > +						sizeof(ext_text) - ext_len);
> > >  		}
> > 
> > what if there is no place left for init_utsname() after
> > msg_print_ext_header() + msg_print_ext_body()?
> 
> It ends up being truncated, like either of the preceeding calls would.

well, I meant once it's truncated your matching doesn't work anymore.

	-ss