From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 706E2C432C2 for ; Wed, 25 Sep 2019 19:26:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 49BB421D7B for ; Wed, 25 Sep 2019 19:26:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732040AbfIYT0t (ORCPT ); Wed, 25 Sep 2019 15:26:49 -0400 Received: from jp.dhs.org ([62.251.46.73]:60892 "EHLO jpvw.nl" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1728788AbfIYT0t (ORCPT ); Wed, 25 Sep 2019 15:26:49 -0400 X-Greylist: delayed 970 seconds by postgrey-1.27 at vger.kernel.org; Wed, 25 Sep 2019 15:26:48 EDT Received: from localhost ([127.0.0.1] helo=jpvw.nl) by jpvw.nl with esmtp (Exim 4.92) (envelope-from ) id 1iDCgN-00049q-P1; Wed, 25 Sep 2019 21:10:35 +0200 Subject: Re: regression(?) in cxusb To: Frantisek Rysanek , Vincent McIntyre , linux-media@vger.kernel.org References: <5D8BAF97.227.3E39A624@Frantisek.Rysanek.post.cz> From: JP Message-ID: Date: Wed, 25 Sep 2019 21:10:35 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <5D8BAF97.227.3E39A624@Frantisek.Rysanek.post.cz> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org On 9/25/19 8:19 PM, Frantisek Rysanek wrote: > On 25 Sep 2019 at 20:31, Vincent McIntyre wrote: >> Hi >> >> I am seeing strange behaviour with the dvb-usb-cxusb.ko module. >> Things have been working fine until just recently. >> >> Target system is Ubuntu 16.04 LTS on amd64. >> I am using their 'hwe' kernel series. >> >> Symptoms: >> * linux-image-4.15.0-58-generic + media-build from a few weeks ago works >> fine >> * linux-image-4.15.0-64-generic without media-build works fine >> * linux-image-4.15.0-64-generic + media build fails > ... >> insmod >> /lib/modules/4.15.0-64-generic/kernel/drivers/media/v4l2-core/v4l2-common.ko >> modprobe: ERROR: could not insert 'dvb_usb_cxusb': Exec format error >> > Dear Vincent, I'm not a maitainer, just a fellow user who happens to > keep an eye on this list. > Excuse my somewhat off topic response: > > Would you consider compiling a fresh kernel? > What hardware are you trying to use with the cxusb driver? > > The linux-media subsystem is pretty vibrant and fast-paced, > fairly serious changes happen between vanilla kernel releases. > In that context, 4.15 sounds oldish... > > In the recent past, I recall support for the Mygica "T230C v2" (aka > T230C2) moving from cxusb.c to dvbsky.c, plus a debate about > one or two unrelated fixes to that code (maybe one of them was a > revert of a previous patch). I recall that one of the motivations for > T230C2 to move from cxusb.c to dvbsky.c was better support for its IR > sensor. > I believe this stuff will be present in Linux 5.4 (just pulled into > the vanilla master, within the merge window that's just now open), > possibly hasn't made it into 5.3. > Meanwhile, the directory structure of the source code keeps receiving > "janitoring" changes etc... > => I suggest that you test some newer kernel, possibly betatest some > 5.4-pre/rc to see if those make a difference (if you cannot wait a > few weeks for 5.4.0 release). Or try some 5.2 / 5.3 if you believe > that the recent changes to cxusb/dvbsky are irrelevant to your HW. > > Frank Rysanek > > Hi Vincent, Frank,  Could be Ubuntu specific or quite possibly some corruption on local system. Jan Pieter.