linux-kernel - Re: [RFC][PATCH 3/5] mm/dmapool: allow NULL `pool' pointer in dma_pool

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]

Date:	Wed, 17 Jun 2015 16:22:46 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Minchan Kim <minchan@...nel.org>,
	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Michal Hocko <mhocko@...e.cz>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, sergey.senozhatsky.work@...il.com
Subject: Re: [RFC][PATCH 3/5] mm/dmapool: allow NULL `pool' pointer in
 dma_pool_destroy()

On Tue, 9 Jun 2015, Sergey Senozhatsky wrote:

> dma_pool_destroy() does not tolerate a NULL dma_pool pointer
> argument and performs a NULL-pointer dereference. This requires
> additional attention and effort from developers/reviewers and
> forces all dma_pool_destroy() callers to do a NULL check
> 
> 	if (pool)
> 		dma_pool_destroy(pool);
> 
> Or, otherwise, be invalid dma_pool_destroy() users.
> 
> Tweak dma_pool_destroy() and NULL-check the pointer there.
> 
> Proposed by Andrew Morton.
> 
> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
> Reported-by: Andrew Morton <akpm@...ux-foundation.org>
> LKML-reference: https://lkml.org/lkml/2015/6/8/583

Acked-by: David Rientjes <rientjes@...gle.com>
--
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/