From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mailout-de.gmx.net ([213.165.64.23]:45172 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with SMTP id S1753936Ab0J3Xkk (ORCPT ); Sat, 30 Oct 2010 19:40:40 -0400 Date: Sun, 31 Oct 2010 01:40:45 +0200 From: Daniel =?iso-8859-1?Q?Gl=F6ckner?= To: Laurent Birtz Cc: linux-media@vger.kernel.org Subject: Re: [PATCH] bttv driver memory corruption Message-ID: <20101030234045.GA15147@minime.bse> References: <4CC5A390.9010800@usherbrooke.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4CC5A390.9010800@usherbrooke.ca> List-ID: Sender: Mauro Carvalho Chehab On Mon, Oct 25, 2010 at 11:34:40AM -0400, Laurent Birtz wrote: > I've observed that the poison was corrupted at some random pages, but > always in the first four bytes. The value of those bytes is 0x23232323. > This byte sequence often appears in kernel oops reports on my setup. I couldn't verify your findings by mallocing an equivalent of the physical memory, filling everything with 0xdeadbeef, and then periodically checking it didn't change while watching tv at 768x576 in YUY2. Which video mode and resolution did you use in your tests? Did you try loading bttv with triton1=1 and vsfx=1? Daniel