From patchwork Wed Sep 16 11:47:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 305252 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED 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 27B32C43461 for ; Wed, 16 Sep 2020 11:54:07 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A753E22208 for ; Wed, 16 Sep 2020 11:54:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="O3Z3R+if" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A753E22208 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:53224 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kIW0j-0008Kq-NF for qemu-devel@archiver.kernel.org; Wed, 16 Sep 2020 07:54:05 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:54100) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kIVuZ-0006Ys-Th for qemu-devel@nongnu.org; Wed, 16 Sep 2020 07:47:43 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:57627) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kIVuY-00085q-5v for qemu-devel@nongnu.org; Wed, 16 Sep 2020 07:47:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1600256861; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type:in-reply-to:in-reply-to: references:references; bh=F+pc1nDFelHE4seVIkTLbhi+MZZTdRgtj08zn+IhqNs=; b=O3Z3R+if3OOaKtoNrQz3FSE+LJ0W8qR8ikhURK5rjF0pll5crDVQvBdxkzHZLhLFci9sqw 5wrI/pr2hIOKy2wMXYsoLvXw9EJS85DsnIe040WAZuQa0kw8EwvxJcdpUxJdZIWCFlBk1D lsPZbxNUUpiWz/39K7NUBJCQwnVIAqU= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-400-o56SBMQ1NPWFC0L88IFjzQ-1; Wed, 16 Sep 2020 07:47:39 -0400 X-MC-Unique: o56SBMQ1NPWFC0L88IFjzQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4B0FD10BBEC3; Wed, 16 Sep 2020 11:47:38 +0000 (UTC) Received: from thuth.com (ovpn-113-19.ams2.redhat.com [10.36.113.19]) by smtp.corp.redhat.com (Postfix) with ESMTP id 08F6A5DA71; Wed, 16 Sep 2020 11:47:36 +0000 (UTC) From: Thomas Huth To: qemu-devel@nongnu.org, Peter Maydell Subject: [PULL 02/24] fuzz: Change the way we write qtest log to stderr Date: Wed, 16 Sep 2020 13:47:09 +0200 Message-Id: <20200916114731.102080-3-thuth@redhat.com> In-Reply-To: <20200916114731.102080-1-thuth@redhat.com> References: <20200916114731.102080-1-thuth@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=thuth@redhat.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/16 02:35:56 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -50 X-Spam_score: -5.1 X-Spam_bar: ----- X-Spam_report: (-5.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.999, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Yonggang Luo Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Alexander Bulekov Telling QTest to log to /dev/fd/2, essentially results in dup(2). This is fine, if other code isn't logging to stderr. Otherwise, the order of the logs is mixed due to buffering issues, since two file-descriptors are used to write to the same file. We can avoid this, since just specifying "-qtest" sets the log fd to stderr. If we want to disable qtest logs, we can just add -qtest-log none. Reviewed-by: Darren Kenny Signed-off-by: Alexander Bulekov Message-Id: <20200819061110.1320568-2-alxndr@bu.edu> Signed-off-by: Thomas Huth --- tests/qtest/fuzz/fuzz.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/tests/qtest/fuzz/fuzz.c b/tests/qtest/fuzz/fuzz.c index 1ceea84702..7f266ffc63 100644 --- a/tests/qtest/fuzz/fuzz.c +++ b/tests/qtest/fuzz/fuzz.c @@ -202,9 +202,8 @@ int LLVMFuzzerInitialize(int *argc, char ***argv, char ***envp) /* Run QEMU's softmmu main with the fuzz-target dependent arguments */ GString *cmd_line = fuzz_target->get_init_cmdline(fuzz_target); - g_string_append_printf(cmd_line, - " -qtest /dev/null -qtest-log %s", - getenv("QTEST_LOG") ? "/dev/fd/2" : "/dev/null"); + g_string_append_printf(cmd_line, " %s -qtest /dev/null ", + getenv("QTEST_LOG") ? "" : "-qtest-log none"); /* Split the runcmd into an argv and argc */ wordexp_t result;