From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EE97E3A0B2B for ; Mon, 20 Apr 2026 12:29:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776688165; cv=none; b=CVbVgPpuj/JCOkki7xshrPdTkhCAjSr61NslCKKOd62auU0HJWR+nd8nTDLg2hAEbXU0q6Ia+ehhc+ITAlAemsGvwndjG16DsLUe3VOD0rbCfSCkyJAtRSW80GigM6rzlQ/f7x6YRk9r7sMVftih0JoRJ82cDSv9l0favCYqzx4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776688165; c=relaxed/simple; bh=dbQSC4BSME3eCMku0WzEnLwxciWEWu9GZ+riAUQr4Vs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=hlm+2aTz279exUriUPKUPu/TwqtSP8kR4kVqi1Nk1hQv3zwH5uwsAFufIWIzVVD7qExpWI2V7uaZtmpKIHGLUOf6HNL7bm9/EBXyVjkeHzDYYSvQWzBoVb6Yx/cWneaIF62XKKQE9jLZlkv5BwtsxbnpfPr/zIQpj4xfRf7NmbY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=hZkSzvRB; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="hZkSzvRB" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1776688163; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=x9wNNxm7+fJjttMUkZW8s7VuVwYypLZT4Qaeba7221k=; b=hZkSzvRBbGr5Dgsn/Q+sE/1ZA9iJ6WV4mK5evk7VZo4ZUnNqB8OQq4SUOHQJloaYpTPxTX DKYKf1+P3ZLH+SIAMqHaVAwPyxWf8w28lv9gJYRIn8Ppy5Z+hKlLNpLrFw0xr6mux8ggkG bF7ftPnQ0urpR5bD60RcDH9GKrd9t7s= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-433-h_fwfMKoPlSYiXvnMsViIA-1; Mon, 20 Apr 2026 08:29:16 -0400 X-MC-Unique: h_fwfMKoPlSYiXvnMsViIA-1 X-Mimecast-MFC-AGG-ID: h_fwfMKoPlSYiXvnMsViIA_1776688154 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 8802519560BA; Mon, 20 Apr 2026 12:29:13 +0000 (UTC) Received: from [192.168.1.153] (headnet01.pony-001.prod.iad2.dc.redhat.com [10.2.32.101]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 02E55195608E; Mon, 20 Apr 2026 12:29:06 +0000 (UTC) From: Albert Esteve Date: Mon, 20 Apr 2026 14:28:06 +0200 Subject: [PATCH v7 4/5] drm: Suppress intentional warning backtraces in scaling unit tests Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20260420-kunit_add_support-v7-4-e8bc6e0f70de@redhat.com> References: <20260420-kunit_add_support-v7-0-e8bc6e0f70de@redhat.com> In-Reply-To: <20260420-kunit_add_support-v7-0-e8bc6e0f70de@redhat.com> To: Arnd Bergmann , Brendan Higgins , David Gow , Rae Moar , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jonathan Corbet , Shuah Khan , Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, dri-devel@lists.freedesktop.org, workflows@vger.kernel.org, linux-doc@vger.kernel.org, peterz@infradead.org, Guenter Roeck , Linux Kernel Functional Testing , Dan Carpenter , =?utf-8?q?Ma=C3=ADra_Canal?= , Alessandro Carminati , Albert Esteve , Simona Vetter X-Developer-Signature: v=1; a=ed25519-sha256; t=1776688120; l=2448; i=aesteve@redhat.com; s=20260303; h=from:subject:message-id; bh=xJbFk9/mo8QSw4/wL3AlWKtaC4Q4ltW/+TVz3/PofkQ=; b=gVFlgGJk6seGtcX78y/BcpLHRxJDayUArWOoDfuMQw81TZcKi2J8oBj+UhcDZ+JfypZqXBzXi 5RBbni2EXXgDhGPrcRd1ijE4rDBoFpecSLhiXfiSqkdNMu38m5nsbT6 X-Developer-Key: i=aesteve@redhat.com; a=ed25519; pk=YSFz6sOHd2L45+Fr8DIvHTi6lSIjhLZ5T+rkxspJt1s= X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 From: Guenter Roeck The drm_test_rect_calc_hscale and drm_test_rect_calc_vscale unit tests intentionally trigger warning backtraces by providing bad parameters to the tested functions. What is tested is the return value, not the existence of a warning backtrace. Suppress the backtraces to avoid clogging the kernel log and distraction from real problems. Tested-by: Linux Kernel Functional Testing Acked-by: Dan Carpenter Acked-by: Maíra Canal Cc: Maarten Lankhorst Cc: David Airlie Cc: Daniel Vetter Signed-off-by: Guenter Roeck Signed-off-by: Alessandro Carminati Signed-off-by: Albert Esteve --- drivers/gpu/drm/tests/drm_rect_test.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/tests/drm_rect_test.c b/drivers/gpu/drm/tests/drm_rect_test.c index 17e1f34b76101..1dd7d819165e7 100644 --- a/drivers/gpu/drm/tests/drm_rect_test.c +++ b/drivers/gpu/drm/tests/drm_rect_test.c @@ -409,8 +409,15 @@ static void drm_test_rect_calc_hscale(struct kunit *test) const struct drm_rect_scale_case *params = test->param_value; int scaling_factor; + /* + * drm_rect_calc_hscale() generates a warning backtrace whenever bad + * parameters are passed to it. This affects all unit tests with an + * error code in expected_scaling_factor. + */ + KUNIT_START_SUPPRESSED_WARNING(test); scaling_factor = drm_rect_calc_hscale(¶ms->src, ¶ms->dst, params->min_range, params->max_range); + KUNIT_END_SUPPRESSED_WARNING(test); KUNIT_EXPECT_EQ(test, scaling_factor, params->expected_scaling_factor); } @@ -420,8 +427,15 @@ static void drm_test_rect_calc_vscale(struct kunit *test) const struct drm_rect_scale_case *params = test->param_value; int scaling_factor; + /* + * drm_rect_calc_vscale() generates a warning backtrace whenever bad + * parameters are passed to it. This affects all unit tests with an + * error code in expected_scaling_factor. + */ + KUNIT_START_SUPPRESSED_WARNING(test); scaling_factor = drm_rect_calc_vscale(¶ms->src, ¶ms->dst, params->min_range, params->max_range); + KUNIT_END_SUPPRESSED_WARNING(test); KUNIT_EXPECT_EQ(test, scaling_factor, params->expected_scaling_factor); } -- 2.52.0