linux-kernel - Re: USB transfer_buffer allocations on 64bit systems

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:	Wed, 14 Apr 2010 17:01:43 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Chris Wright <chrisw@...s-sol.org>,
	USB list <linux-usb@...r.kernel.org>, Greg KH <gregkh@...e.de>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	iommu@...ts.linux-foundation.org, Andi Kleen <andi@...stfloor.org>,
	Daniel Mack <daniel@...aq.de>,
	Pedro Ribeiro <pedrib@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Woodhouse <dwmw2@...radead.org>
Subject: Re: USB transfer_buffer allocations on 64bit systems

On Wed, Apr 14, 2010 at 04:29:22PM -0400, Alan Stern wrote:
> On Wed, 14 Apr 2010, Chris Wright wrote:
> 
> > So dma_map_single is the case that's failing, but you think the mask is
> > correct?  What about the direction?
> 
> The mask and direction are unquestionably correct.  The mask is set up 
> by pci_setup_device() and not changed thereafter.  Furthermore, the 
> audio works okay until another device (a DVB tuner) is plugged in.  

Could the driver for the DVB tuner change the PCI mask? That is, change
the pci mask way after it has been initialized (don't laugh, this did
happend - as I remember 4 months fix was posted on the DRM mailing list
for this).
--
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/