linux-kernel - Re: [PATCH] [6/50] i386: clean up oops/bug reports

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Message-ID: <Pine.LNX.4.64.0709221147140.15712@fbirervta.pbzchgretzou.qr>
Date:	Sat, 22 Sep 2007 11:47:43 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	Chuck Ebbert <cebbert@...hat.com>
cc:	Andi Kleen <ak@...e.de>, xemul@...nvz.org, patches@...-64.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [6/50] i386: clean up oops/bug reports


On Sep 21 2007 18:41, Chuck Ebbert wrote:
>On 09/21/2007 06:32 PM, Andi Kleen wrote:
>> From: Pavel Emelyanov <xemul@...nvz.org>
>> 
>> Typically the oops first lines look like this:
>> 
>> BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
>>  printing eip:
>> c049dfbd
>> *pde = 00000000
>> Oops: 0002 [#1]
>> PREEMPT SMP
>> ...
>> 
>> Such output is gained with some ugly if (!nl) printk("\n"); code and
>> besides being a waste of lines, this is also annoying to read. The
>> following output looks better (and it is how it looks on x86_64):
>> 
>> BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
>> printing eip: c049dfbd *pde = 00000000
>> Oops: 0002 [#1] PREEMPT SMP

In fact, the EIP can be left out, because it is printed later
as part of the register dump anyway.
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