linux-kernel - Re: [PATCH 3/3] mm: slub: Add SLAB_DEBUG

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Message-ID: <54DE8E47.5040800@canonical.com>
Date:	Fri, 13 Feb 2015 17:52:39 -0600
From:	Chris J Arges <chris.j.arges@...onical.com>
To:	David Rientjes <rientjes@...gle.com>
CC:	linux-kernel@...r.kernel.org, Jonathan Corbet <corbet@....net>,
	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-doc@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 3/3] mm: slub: Add SLAB_DEBUG_CRASH option



On 02/13/2015 05:38 PM, David Rientjes wrote:
> On Fri, 13 Feb 2015, Chris J Arges wrote:
> 
>> This option crashes the kernel whenever corruption is initially detected. This
>> is useful when trying to use crash dump analysis to determine where memory was
>> corrupted.
>>
>> To enable this option use slub_debug=C.
>>
> 
> Why isn't this done in other debugging functions such as 
> free_debug_processing()?
> 

The diff doesn't show this clearly, but the BUG_ON was added to both
free_debug_processing and alloc_debug_processing.

--chris
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