linux-kernel - Re: [PATCH 2/2] mtip32xx: Unmap the DMA segments before completing the IO request

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Message-ID: <5320885B.50507@kernel.dk>
Date:	Wed, 12 Mar 2014 10:16:27 -0600
From:	Jens Axboe <axboe@...nel.dk>
To:	Felipe Franciosi <felipe@...adoxo.org>,
	linux-kernel@...r.kernel.org
CC:	Sam Bradshaw <sbradshaw@...ron.com>
Subject: Re: [PATCH 2/2] mtip32xx: Unmap the DMA segments before completing
 the IO request

On 03/12/2014 10:05 AM, Felipe Franciosi wrote:
> If the buffers are unmapped after completing a request, then stale data
> might be in the request.

This is unfortunate, and a real bug. Good catch!

-- 
Jens Axboe

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