linux-kernel - Re: WARNING: CPU: 0 PID: 0 at lib/dma-debug.c:491

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Message-ID: <CA+5PVA6v=r5_qR30_2mRFWsT3kuOcLj900DQ7TwxCfBva2mWig@mail.gmail.com>
Date:	Tue, 18 Feb 2014 09:24:54 -0500
From:	Josh Boyer <jwboyer@...oraproject.org>
To:	Madper Xie <cxie@...hat.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: WARNING: CPU: 0 PID: 0 at lib/dma-debug.c:491

On Mon, Feb 17, 2014 at 10:02 PM, Madper Xie <cxie@...hat.com> wrote:
> Howdy all,
>   Meet following warning and call trace:
>
> [307001.720980] ------------[ cut here ]------------
> [307001.720994] WARNING: CPU: 0 PID: 0 at lib/dma-debug.c:491 add_dma_entry+0x127/0x130()
> [307001.720996] DMA-API: exceeded 7 overlapping mappings of pfn 1932f8

This should be fixed by this patch:

http://marc.info/?l=linux-kernel&m=139233546223338&w=2

josh
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