linux-kernel - Re: [PATCH] zsmalloc: fix a null pointer dereference in destroy_handle

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Message-ID: <20150610000303.GA13376@bgram>
Date:	Wed, 10 Jun 2015 09:03:03 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Subject: Re: [PATCH] zsmalloc: fix a null pointer dereference in
 destroy_handle_cache()

On Fri, Jun 05, 2015 at 08:11:30PM +0900, Sergey Senozhatsky wrote:
> zs_destroy_pool()->destroy_handle_cache() invoked from
> zs_create_pool() can pass a NULL ->handle_cachep pointer
> to kmem_cache_destroy(), which will dereference it.
> 
> Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>

Thanks, Sergey!
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