Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756299AbcJGHxI (ORCPT ); Fri, 7 Oct 2016 03:53:08 -0400 Received: from mx2.suse.de ([195.135.220.15]:54430 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753718AbcJGHw6 (ORCPT ); Fri, 7 Oct 2016 03:52:58 -0400 Date: Fri, 7 Oct 2016 09:52:56 +0200 (CEST) From: Jiri Kosina X-X-Sender: jkosina@pobox.suse.cz To: Mauro Carvalho Chehab cc: =?ISO-8859-15?Q?J=F6rg_Otte?= , Johannes Stezenbach , Patrick Boettcher , Linux Kernel Mailing List , Andy Lutomirski , Michael Krufky , Mauro Carvalho Chehab , Linux Media Mailing List Subject: Re: Problem with VMAP_STACK=y In-Reply-To: <20161006141734.4b2e4880@vento.lan> Message-ID: References: <20161005093417.6e82bd97@vdr> <20161005060450.1b0f2152@vento.lan> <20161005182945.nkpphvd6wtk6kq7h@linuxtv.org> <20161005155532.682258e2@vento.lan> <20161006141734.4b2e4880@vento.lan> User-Agent: Alpine 2.00 (LNX 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 532 Lines: 16 On Thu, 6 Oct 2016, Mauro Carvalho Chehab wrote: > I can't see any other obvious error on the conversion. You could try to > enable debug options at DVB core/dvb-usb and/or add some printk's to the > driver and see what's happening. Mauro, also please don't forget that there are many more places in drivers/media that still perform DMA on stack, and so have to be fixed for 4.9 (as VMAP_STACK makes that to be immediately visible problem even on x86_64, which it wasn't the case before). Thanks, -- Jiri Kosina SUSE Labs