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From: Robert Hancock <hancockrwd@gmail.com>
To: Kasper Sandberg <lkml@metanurb.dk>
Cc: Torsten Kaiser <just.for.lkml@googlemail.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	SCSI development list <linux-scsi@vger.kernel.org>
Subject: Re: sata_sil24 0000:04:00.0: DMA-API: device driver frees DMA sg list  with different entry count [map count=13] [unmap count=10]
Date: Wed, 03 Jun 2009 17:33:21 -0600	[thread overview]
Message-ID: <4A270841.7070107@gmail.com> (raw)
In-Reply-To: <1244060503.11698.3.camel@localhost>

Kasper Sandberg wrote:
> On Wed, 2009-06-03 at 21:30 +0200, Torsten Kaiser wrote:
>> On Wed, May 27, 2009 at 1:40 AM, Robert Hancock <hancockrwd@gmail.com> wrote:
>>> Torsten Kaiser wrote:
>>>> On upgrading to 2.6.30-rc1 I enable the DMA-Debugging option
>>>> CONFIG_DMA_API_DEBUG=y
>>>> Since then I get the following or similar errors on each boot:
>>> Please retest with a newer -rc, this patch likely fixes it:
>>>
>>> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5825627c9463581fd9e70f8285685889ae5bb9bb
>>>
>> Still happens with 2.6.30-rc8 (see trace at the end of the email)
>>
> <snip>
> 
> Does this actually give you any problems? should I be scared to give .30
> a test?

If Torsten's diagnosis is correct it's a problem with the DMA debugging 
code, not an actual driver bug.

  reply	other threads:[~2009-06-03 23:33 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-05-26 19:14 sata_sil24 0000:04:00.0: DMA-API: device driver frees DMA sg list with different entry count [map count=13] [unmap count=10] Torsten Kaiser
2009-05-26 19:14 ` Torsten Kaiser
2009-05-26 23:40 ` Robert Hancock
2009-05-27  2:11   ` Torsten Kaiser
2009-05-27  2:11     ` Torsten Kaiser
2009-06-03 19:30   ` Torsten Kaiser
2009-06-03 19:30     ` Torsten Kaiser
2009-06-03 20:21     ` Kasper Sandberg
2009-06-03 23:33       ` Robert Hancock [this message]
2009-06-04  6:00       ` Torsten Kaiser
2009-06-04  6:00         ` Torsten Kaiser
2009-06-04  0:02     ` FUJITA Tomonori
2009-06-04  6:12       ` Torsten Kaiser
2009-06-04  6:12         ` Torsten Kaiser
2009-06-04  6:33         ` FUJITA Tomonori
2009-06-04  7:15           ` Boaz Harrosh
2009-06-04  7:44             ` FUJITA Tomonori
2009-06-04  7:53               ` Jens Axboe
2009-06-04 18:07                 ` Torsten Kaiser
2009-06-04 18:07                   ` Torsten Kaiser
2009-06-04 22:43                   ` FUJITA Tomonori

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