From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Thu, 3 Nov 2022 15:57:10 +0100 From: Mauro Carvalho Chehab To: Isabella Basso 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 Subject: Re: [igt-dev] [PATCH i-g-t v2 3/4] lib/igt_kmod: add compatibility for KUnit List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: davidgow@google.com, magalilemes00@gmail.com, maira.canal@usp.br, dlatypov@google.com, n@nfraprado.net, brendanhiggins@google.com, linux-kernel@vger.kernel.org, leandro.ribeiro@collabora.com, igt-dev@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kselftest@vger.kernel.org, tales.aparecida@gmail.com, skhan@linuxfoundation.org, andrealmeid@riseup.net, kunit-dev@googlegroups.com Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" List-ID: 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