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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89294C4332F for ; Thu, 3 Nov 2022 14:57:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229634AbiKCO5V (ORCPT ); Thu, 3 Nov 2022 10:57:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41698 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229493AbiKCO5U (ORCPT ); Thu, 3 Nov 2022 10:57:20 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 24908111B; Thu, 3 Nov 2022 07:57:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1667487440; x=1699023440; h=date:from:to:cc:subject:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=MLW8zE+DMJXqzAzyiq/DhgzhL/SIAUig1ngDloNMjcw=; b=RkoYctvdgPzGqAmNmoN5kyRvEiPJbND0hX0ZsB31iUTnuOHk2VIooAk0 gM+OCv2rCvSenxn5LaEvDolOP5Ph7sdb/NtdIXAB6ghfuNMJVlRkcULKm zA8YWtyM7kuYdNhMhTVF6AK03Sov6GH4ix9iNGCeDMFOt/vX8KIKCfXit CKpLWbHFNwesQlBgWVu0dIqHtaxMbOKemYir1D1TdOuVfa0J+HNEfwiYy 0jwLYgM0bHzprCr0qzkVWPNYtNffnBEMrrokj3FpuNoabAu5HB5H4WUTJ kdlA0ANj+NrFqInd1TOxzl2lXj7o86JbovhQEocdc7iL7fiTwYAQtrFyq w==; X-IronPort-AV: E=McAfee;i="6500,9779,10520"; a="297165023" X-IronPort-AV: E=Sophos;i="5.96,235,1665471600"; d="scan'208";a="297165023" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Nov 2022 07:57:19 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10520"; a="809698549" X-IronPort-AV: E=Sophos;i="5.96,235,1665471600"; d="scan'208";a="809698549" Received: from linux.intel.com ([10.54.29.200]) by orsmga005.jf.intel.com with ESMTP; 03 Nov 2022 07:57:19 -0700 Received: from maurocar-mobl2 (maurocar-mobl2.ger.corp.intel.com [10.252.30.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by linux.intel.com (Postfix) with ESMTPS id 34BE1580BA0; Thu, 3 Nov 2022 07:57:13 -0700 (PDT) Date: Thu, 3 Nov 2022 15:57:10 +0100 From: Mauro Carvalho Chehab To: Isabella Basso Cc: linux-kselftest@vger.kernel.org, magalilemes00@gmail.com, maira.canal@usp.br, dlatypov@google.com, tales.aparecida@gmail.com, brendanhiggins@google.com, linux-kernel@vger.kernel.org, leandro.ribeiro@collabora.com, igt-dev@lists.freedesktop.org, dri-devel@lists.freedesktop.org, n@nfraprado.net, davidgow@google.com, skhan@linuxfoundation.org, andrealmeid@riseup.net, kunit-dev@googlegroups.com Subject: Re: [igt-dev] [PATCH i-g-t v2 3/4] lib/igt_kmod: add compatibility for KUnit Message-ID: <20221103155710.36f29dd3@maurocar-mobl2> In-Reply-To: <20221103104840.7301df76@maurocar-mobl2> References: <20220829000920.38185-1-isabbasso@riseup.net> <20220829000920.38185-4-isabbasso@riseup.net> <20221103104840.7301df76@maurocar-mobl2> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org On Thu, 3 Nov 2022 10:48:40 +0100 Mauro Carvalho Chehab wrote: > On Sun, 28 Aug 2022 21:09:19 -0300 > Isabella Basso wrote: > > > This adds functions for both executing the tests as well as parsing (K)TAP > > kmsg output, as per the KTAP spec [1]. > > > > [1] https://www.kernel.org/doc/html/latest/dev-tools/ktap.html > > > > Signed-off-by: Isabella Basso > > Hi Isabella, > > I'm doing some tests here with my i915 KUnit patch series. > > There's a problem with the way it is currently parsing the KTAP logs on > IGT. It sounds that it is parsing the data only at the end, and not as > they arrive. That's bad, as if something goes wrong, the previously > reported data is still useful. > > Also, when there's a crash, the IGT process is getting segmentation > fault. So, the end result is that nothing is actually reported. > > $ sudo ./build/tests/i915_selftest > IGT-Version: 1.26-gbab20eb65 (x86_64) (Linux: 6.1.0-rc2-drm-990037e9984e+ x86_64) > Segmentation fault (core dumped) > > However, the logs are there (see enclosed). In this specific case, there > was a GPU hang while running one of the tests on a real hardware, which > is something that it is actually expected at development time. Btw, if you want to test it, the patches I'm using are at: https://patchwork.freedesktop.org/series/110483/ The latest patch there is a workaround that fixes the issue. So, if you apply patches 1-7 only, skipping (or reverting) patch 8, you'll be able to reproduce the Kernel crash (which seems to be caused by the way KUnit is initialized). Regards, Mauro