linux-kernel - Re: [PATCH] mm: cma: Fix incorrect type conversion for size during dma allocation

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Message-ID: <20151018051056.GB20643@kroah.com>
Date:	Sat, 17 Oct 2015 22:10:56 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Rohit Vaswani <rvaswani@...eaurora.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] mm: cma: Fix incorrect type conversion for size during
 dma allocation

On Wed, Oct 14, 2015 at 01:23:51PM -0700, Rohit Vaswani wrote:
> This was found during userspace fuzzing test when a large size
> dma cma allocation is made by driver(like ion) through userspace.
> 
>  show_stack+0x10/0x1c
>  dump_stack+0x74/0xc8
>  kasan_report_error+0x2b0/0x408
>  kasan_report+0x34/0x40
>  __asan_storeN+0x15c/0x168
>  memset+0x20/0x44
>  __dma_alloc_coherent+0x114/0x18c
> 
> Signed-off-by: Rohit Vaswani <rvaswani@...eaurora.org>

Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
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