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Message-ID: <1505701349.12022.1.camel@perches.com>
Date:   Sun, 17 Sep 2017 19:22:29 -0700
From:   Joe Perches <joe@...ches.com>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Petr Mladek <pmladek@...e.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Pavel Machek <pavel@....cz>, Jan Kara <jack@...e.cz>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jiri Slaby <jslaby@...e.com>, Andreas Mohr <andi@...as.de>,
        Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: printk: what is going on with additional newlines?

On Mon, 2017-09-18 at 09:46 +0900, Sergey Senozhatsky wrote:
> there is another reason why I think that, yes, we probably better do
> it some other way. and the reason is that not every message that looks
> like !PREFIX (does not start with KERN_SOH_ASCII) is _actually_ a
> !PREFIX message. the normal/usual way is to have something like
> 
> 	printk(KERN_SOH_ASCII %d " foo bar / %s %s\n", "foo", "bar");
> 
> but some messages look like
> 
> 	printk("%s", KERN_SOH_ASCII %d "foo bar\n");

There are no messages that look like that.

There are 2 entries somewhat like that though

net/bridge/netfilter/ebt_log.c: printk(KERN_SOH "%c%s IN=%s OUT=%s MAC source = %pM MAC dest = %pM proto = 0x%04x",
net/netfilter/nf_log_common.c:  nf_log_buf_add(m, KERN_SOH "%c%sIN=%s OUT=%s ",

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