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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 E60F7C67863 for ; Thu, 18 Oct 2018 22:11:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A28382145D for ; Thu, 18 Oct 2018 22:11:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=comcast.net header.i=@comcast.net header.b="pFWplwbo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A28382145D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=comcast.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727026AbeJSGOB (ORCPT ); Fri, 19 Oct 2018 02:14:01 -0400 Received: from resqmta-ch2-08v.sys.comcast.net ([69.252.207.40]:47436 "EHLO resqmta-ch2-08v.sys.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726589AbeJSGOB (ORCPT ); Fri, 19 Oct 2018 02:14:01 -0400 X-Greylist: delayed 489 seconds by postgrey-1.27 at vger.kernel.org; Fri, 19 Oct 2018 02:14:00 EDT Received: from resomta-ch2-11v.sys.comcast.net ([69.252.207.107]) by resqmta-ch2-08v.sys.comcast.net with ESMTP id DB5DgPLsxw1tsDGNWgkzqZ; Thu, 18 Oct 2018 22:02:50 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20161114; t=1539900170; bh=0cMxcKFlvR3SkhhBGm4h7Wwy9fICa7K56nhoxu1VD+U=; h=Received:Received:To:From:Subject:Message-ID:Date:MIME-Version: Content-Type; b=pFWplwbodJy5bDwB1pYQAlnMwpzSDJX11KE+GX8zofEGRZtU+fGJNuW6W28q+GEbD p+CeDO7vtir9ujZWuMEvYM2+Oo45a2XR9CSipBpgiaQBnvkWyVIqyUMpVKdkcZp4nT 8mwoDRN4Ee803LCsy3I9trccQ/zQHBLgVY8GGD6xa/E2HgIv8HpvBOrHAv3QeJUiNv 1waZu9BZ24NVyK7qIcJsiAG0bep14MLs4e5F5c7Z76hmZYoSbV2cApdHWqoeVG/LFe BqFHLjj7XUyVllkn+ziWUYWrY73vxckElfvKDlfu57LUfK1y2YkqL0NTWMnpJkdxA9 7ek1l+35Xn4kg== Received: from [IPv6:2601:500:8302:75bf:36e6:d7ff:fe01:2add] ([IPv6:2601:500:8302:75bf:36e6:d7ff:fe01:2add]) by resomta-ch2-11v.sys.comcast.net with ESMTPA id DGNVgEQ8ZVJf4DGNVgI10W; Thu, 18 Oct 2018 22:02:50 +0000 To: linux-kernel@vger.kernel.org From: don fisher Subject: netconsole on opensuse 42.3 with a 4.18.7 kernel hangs Message-ID: <1912e0c1-5ebe-5d76-2eb0-71d70a28f3bd@comcast.net> Date: Thu, 18 Oct 2018 15:02:48 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-CMAE-Envelope: MS4wfGG6PUcGr7XeOBrjRk/MgSIeh4MXTv785jr18mJskGa7OUBDXP7NPcqTtfFErlco2tgzGIYGwQvz2kYN1nCLi/YGoHo/D+zbl2FdAXiXY3V3MtYmQkMZ FWLlyw5MPBE2fdBP1Kl1ks3Va59MFbuaNenzO22P3EY8La2sbf2ux3SqUrSsYC2VesIXmEFQbqJbPi3RuiyEiOvXyZ4zm1yip5mKcAV8qhjmsTXiR1Hcp/8l xlN/wzIRxDe0SnfBuYbK/UjSXzaJp+eWhAulLdUYZeURDOfEnmfVVlzQ4dfPKMFH Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I have been watching posts on this list and see that many users employ netconsole. My netconsole is native to the 4.18.7 kernel, and works perfectly for about 13 sec ( 12.954965 last attempt) after boot. It then hangs. 709 lines are transmitted before the hang. If I examine /var/log/messages there are a lot of systemd messages printed immediately after the last successful kernel message that was transmitted by netconsole. I thought that anything that went to printk also went to netconsole. But netconsole does not appear to be awakened after the first systemd message is logged. I have examined netconsole.c and printk.c, but am overwhelmed and am not able to determine what triggers netconsole. I feel that the trigger may be negated by systemd or some other part of system startup. I am running opensuse 42.3 and have not had any replies from their lists. I feel it is that the native netconsole is not a component of their distribution so it is my problem. I can forward any data desired output from dmesg, netconsole, or /var/log/messages. Any assistance would be greatly appreciated. Don