linux-kernel - Re: Error: DMA: Out of SW-IOMMU space [was: External USB drives become unresponsive after few hours.]

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 16 Apr 2015 22:13:33 +0200
From:	Dorian Gray <yourfavouritegod@...il.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:	Alexander Duyck <alexander.duyck@...il.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Suman Tripathi <stripathi@....com>,
	iommu@...ts.linux-foundation.org,
	USB list <linux-usb@...r.kernel.org>,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: Error: DMA: Out of SW-IOMMU space [was: External USB drives
 become unresponsive after few hours.]

On 16 April 2015 at 20:42, Konrad Rzeszutek Wilk <konrad.wilk@...cle.com> wrote:
> And easier way is to compile the kernel with CONFIG_DMA_API_DEBUG
> and then load the attached module.
>
> That should tell you who and what else is holding on the buffers.

Thanks, this will be my next step then, right after I'm done with
testing the increased SWIOTLB.

Jake
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/