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Re: [RFC] [PATCH] cpuset operations causes Badness at mm/slab.c:777 warning
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From:
Jeremy Fitzhardinge <jeremy@...>
To: Linus Torvalds <torvalds@...>
Cc: Christoph Lameter <clameter@...>, Andrew Morton <akpm@...>, Srinivasa Ds <srinivasa@...>, <linux-kernel@...>, Srivatsa Vaddagiri <vatsa@...>, Dinakar Guniguntala <dino@...>, <pj@...>, <simon.derr@...>, <clameter@...>, <rientjes@...>
Subject:
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/slab.c:777 warning
Date: Friday, June 1, 2007 - 8:46 pm
Linus Torvalds wrote:
quoted text
> So for *both* of the above reasons, it's actually stupid to return NULL > for a zero-sized allocation. It would be much better to return another > pointer that will trap on access. A good candidate might be to return > > #define BADPTR ((void *)16) >
I think this is a good idea in principle, but I wonder if there's any code which assumes that kmalloc(x) != kmalloc(x) for all non-NULL returns from kmalloc. J -
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Messages in current thread:
[RFC] [PATCH] cpuset operations causes Badness at mm/slab.c:...
, Srinivasa Ds
, (Fri Jun 1, 3:27 am)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Srinivasa Ds
, (Fri Jun 1, 6:50 am)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Jeremy Fitzhardinge
, (Fri Jun 1, 4:30 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 4:47 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Andrew Morton
, (Fri Jun 1, 4:59 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 5:45 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Andrew Morton
, (Fri Jun 1, 6:16 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Jeremy Fitzhardinge
, (Fri Jun 1, 8:43 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Andrew Morton
, (Fri Jun 1, 8:51 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Jeremy Fitzhardinge
, (Fri Jun 1, 8:59 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 6:20 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Andrew Morton
, (Fri Jun 1, 6:33 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 6:41 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Jeremy Fitzhardinge
, (Fri Jun 1, 8:41 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Andrew Morton
, (Fri Jun 1, 7:02 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Linus Torvalds
, (Fri Jun 1, 7:25 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 7:16 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Linus Torvalds
, (Fri Jun 1, 7:36 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 7:42 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 7:21 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Linus Torvalds
, (Fri Jun 1, 7:00 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
,
, (Fri Jun 1, 9:05 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 9:24 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Jeremy Fitzhardinge
, (Fri Jun 1, 8:46 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 7:29 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Linus Torvalds
, (Fri Jun 1, 7:41 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 7:46 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Linus Torvalds
, (Fri Jun 1, 7:57 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Andrew Morton
, (Fri Jun 1, 8:16 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 8:26 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Linus Torvalds
, (Fri Jun 1, 9:04 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 8:12 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Jeremy Fitzhardinge
, (Fri Jun 1, 4:56 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Paul Jackson
, (Fri Jun 1, 4:44 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 2:13 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Paul Jackson
, (Fri Jun 1, 3:11 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 3:18 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Paul Jackson
, (Fri Jun 1, 3:47 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 3:51 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Paul Jackson
, (Fri Jun 1, 4:02 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 4:06 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Paul Jackson
, (Fri Jun 1, 4:19 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Christoph Lameter
, (Fri Jun 1, 4:43 pm)
Re: [RFC] [PATCH] cpuset operations causes Badness at mm/sla...
, Paul Jackson
, (Fri Jun 1, 4:54 pm)
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