linux-kernel - Re: [PATCH] printk: allow setting DEFAULT_MESSAGE

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: <ihr10g$qmm$2@dough.gmane.org>
Date:	Thu, 27 Jan 2011 05:49:04 +0000 (UTC)
From:	WANG Cong <xiyou.wangcong@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] printk: allow setting DEFAULT_MESSAGE_LEVEL via Kconfig

On Wed, 26 Jan 2011 15:05:48 -0800, Mandeep Baines wrote:

> On Tue, Jan 25, 2011 at 8:18 PM, WANG Cong <xiyou.wangcong@...il.com>
> wrote:
>>
>> On Tue, 25 Jan 2011 15:57:00 -0800, Mandeep Singh Baines wrote:
>>
>> > We've been burned by regressions/bugs which we later realized could
>> > have been triaged quicker if only we'd paid closer attention to
>> > dmesg. To make it easier to audit dmesg, we'd like to make
>> > DEFAULT_MESSAGE_LEVEL Kconfig-settable. That way we can set it to
>> > KERN_NOTICE and audit any messages <= KERN_WARNING.
>> >
>> >
>> Why? We already have "loglevel=" kernel parameter.
>>
>>
> loglevel allows you to control which messages go to the console.
> 
> DEFAULT_MESSAGE_LEVEL selects the default message levels for printk()s
> which don't specify a message level.


I think you should fix them instead.

> 
> Most printks()s without a message level aren't really warnings and just
> create noise
> if you're trying to look closely at all warnings. Some of this is just
> old code but new
> printk()s without a message level do get committed from time to time.
> 

IIRC, checkpatch.pl will complain about this.


--
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/