linux-kernel - Re: [PATCH] Fix kunmap() argument in sg_miter

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Message-ID: <491FACC3.1050202@gmail.com>
Date:	Sun, 16 Nov 2008 14:16:51 +0900
From:	Tejun Heo <htejun@...il.com>
To:	Arjan van de Ven <arjan@...radead.org>
CC:	Hugh Dickins <hugh@...itas.com>, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, jens.axboe@...cle.com
Subject: Re: [PATCH] Fix kunmap() argument in sg_miter_stop

Arjan van de Ven wrote:
> From 979d181d6199f639ba78c5eadf85857f6a9f3f89 Mon Sep 17 00:00:00 2001
> From: Arjan van de Ven <arjan@...ux.intel.com>
> Date: Sat, 15 Nov 2008 11:23:58 -0800
> Subject: [PATCH] Fix kunmap() argument in sg_miter_stop
> 
> kunmap() takes as argument the struct page that orginally got kmap()'d,
> however the sg_miter_stop() function passed it the kernel virtual address
> instead, resulting in weird stuff.
> 
> Somehow I ended up fixing this bug by accident while looking for a bug
> in the same area.
> 
> Reported-by: kerneloops.org
> CC: htejun@...il.com
> 
> Signed-off-by: Arjan van de Ven <arjan@...ux.intel.com>

Argh... talk about confusing interfaces.  Thanks a lot.

Acked-by: Tejun Heo <tj@...nel.org>

-- 
tejun
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