linux-kernel - Re: [PATCH] dma-debug: disable DMA_API

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Message-ID: <20090612141346.GY5139@amd.com>
Date:	Fri, 12 Jun 2009 16:13:46 +0200
From:	Joerg Roedel <joerg.roedel@....com>
To:	Torsten Kaiser <just.for.lkml@...glemail.com>
CC:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Linus Torvalds <torvalds@...ux-foundation.org>, mingo@...e.hu,
	lethal@...ux-sh.org, hancockrwd@...il.com, jens.axboe@...cle.com,
	bharrosh@...asas.com, linux-kernel@...r.kernel.org,
	linux-scsi@...r.kernel.org
Subject: Re: [PATCH] dma-debug: disable DMA_API_DEBUG for now

On Thu, Jun 11, 2009 at 07:38:47PM +0200, Torsten Kaiser wrote:
> DMA-API: device driver tries to free DM
> A memory it has not allocated [device address=0x000000011e4c3000]
> [size=4096 bytes]

Hmm, looking again over the code I've seen that the ref
dma_debug_entries are not alway filled with all necessary information
for best-fit. Can you please try if you still get false warnings when
you apply the two patches attached instead of the one I sent yesterday?

Thanks,

	Joerg

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View attachment "0001-dma-debug-check-for-sg_call_ents-in-best-fit-algorit.patch" of type "text/x-diff" (1833 bytes)

View attachment "0002-dma-debug-be-more-careful-when-building-reference-en.patch" of type "text/x-diff" (8817 bytes)