From nobody Sun Dec 14 06:20:49 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=quarantine dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1754640607; cv=none; d=zohomail.com; s=zohoarc; b=mOa6LfvvW5cXyk5BRrsbKrKuewZOawnIfi6C9crO+O4PqDjdhQwgLO4bVPo+cOgTq2z96wbSDrfn/wvMefR+VRx1sXM8JDZrqgJnOk7pYLY8yp+mFbE3hln4uss0dtJdKtMeuWtyOJjILTNNgFI6Fv/xyhMPy/N6jqK3D3T23yk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1754640607; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=3ljHRkhuv+A2yN+7QxHiz97kCfvWj865DJY7sh7n1vs=; b=LQKekbF9+snsQLt5YYSbIkPNrSTziCUp1SAQ16TspGUUuZbCz4Z0WAvRtMs5mLluCAV2cz7mKBAZbHAGCPE+1UTZzVQGhxpHxHc1cU7ZeBTbHRyEpA31NlqoeqshSZEyxpxiQmM+uYpU/HtqwfIbfKY75hVipoznsHsOMZ0TyNY= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1754640607412833.4275316891877; Fri, 8 Aug 2025 01:10:07 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ukI9c-0007Db-3r; Fri, 08 Aug 2025 04:08:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ukI9T-00072w-7J for qemu-devel@nongnu.org; Fri, 08 Aug 2025 04:08:35 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ukI9R-0006TU-Fd for qemu-devel@nongnu.org; Fri, 08 Aug 2025 04:08:34 -0400 Received: from mx-prod-mc-03.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-338-6F2Yr0EqNXCCXIkD7ZstdA-1; Fri, 08 Aug 2025 04:08:27 -0400 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (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-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 8EF1119560B7; Fri, 8 Aug 2025 08:08:26 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.45.242.18]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id EAC46180028A; Fri, 8 Aug 2025 08:08:25 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 4754621E6924; Fri, 08 Aug 2025 10:08:23 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1754640512; 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=3ljHRkhuv+A2yN+7QxHiz97kCfvWj865DJY7sh7n1vs=; b=dn4NTcQlq5h/+uWp41IIsaWXniZn8pXYcYX8pCuABLIPAySsC9hpJMP9SwUnvlRK/rKx/N cbRLhZqwVPVrM8i3dRDPVg7CRfVCxSEwEkpbE12OSYTWrJc7e9GHCO4WzL4DsuTtsuDrkq HymG3YgxfFyfgQNzYac/W1Dr1PUjDZQ= X-MC-Unique: 6F2Yr0EqNXCCXIkD7ZstdA-1 X-Mimecast-MFC-AGG-ID: 6F2Yr0EqNXCCXIkD7ZstdA_1754640507 From: Markus Armbruster To: qemu-devel@nongnu.org Cc: odaki@rsg.ci.i.u-tokyo.ac.jp, marcandre.lureau@redhat.com, =?UTF-8?q?Alex=20Benn=C3=A9e?= Subject: [PATCH 01/12] monitor: Clean up HMP gdbserver error reporting Date: Fri, 8 Aug 2025 10:08:12 +0200 Message-ID: <20250808080823.2638861-2-armbru@redhat.com> In-Reply-To: <20250808080823.2638861-1-armbru@redhat.com> References: <20250808080823.2638861-1-armbru@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1754640609676124100 HMP command gdbserver used to emit two error messages for certain errors. For instance, with -M none: (qemu) gdbserver gdbstub: meaningless to attach gdb to a machine without any CPU. Could not open gdbserver on device 'tcp::1234' The first message is the specific error, and the second one a generic additional message that feels superfluous to me. Commit c0e6b8b798b (system: propagate Error to gdbserver_start (and other device setups)) turned the first message into a warning: warning: gdbstub: meaningless to attach gdb to a machine without any CP= U. Could not open gdbserver on device 'tcp::1234' This is arguably worse. hmp_gdbserver() passes &error_warn to gdbserver_start(), so that failure gets reported as warning, and then additionally emits the generic error on failure. This is a misuse of &error_warn. Instead, receive the error in &err and report it, as usual. With this, gdbserver reports just the error: gdbstub: meaningless to attach gdb to a machine without any CPU. Cc: Alex Benn=C3=A9e Signed-off-by: Markus Armbruster Reviewed-by: Daniel P. Berrang=C3=A9 --- include/exec/gdbstub.h | 3 --- monitor/hmp-cmds.c | 7 ++++--- 2 files changed, 4 insertions(+), 6 deletions(-) diff --git a/include/exec/gdbstub.h b/include/exec/gdbstub.h index a16c0051ce..bd7182c4d3 100644 --- a/include/exec/gdbstub.h +++ b/include/exec/gdbstub.h @@ -55,9 +55,6 @@ void gdb_unregister_coprocessor_all(CPUState *cpu); * system emulation you can use a full chardev spec for your gdbserver * port. * - * The error handle should be either &error_fatal (for start-up) or - * &error_warn (for QMP/HMP initiated sessions). - * * Returns true when server successfully started. */ bool gdbserver_start(const char *port_or_device, Error **errp); diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c index 74a0f56566..33a88ce205 100644 --- a/monitor/hmp-cmds.c +++ b/monitor/hmp-cmds.c @@ -280,14 +280,15 @@ void hmp_log(Monitor *mon, const QDict *qdict) =20 void hmp_gdbserver(Monitor *mon, const QDict *qdict) { + Error *err =3D NULL; const char *device =3D qdict_get_try_str(qdict, "device"); + if (!device) { device =3D "tcp::" DEFAULT_GDBSTUB_PORT; } =20 - if (!gdbserver_start(device, &error_warn)) { - monitor_printf(mon, "Could not open gdbserver on device '%s'\n", - device); + if (!gdbserver_start(device, &err)) { + error_report_err(err); } else if (strcmp(device, "none") =3D=3D 0) { monitor_printf(mon, "Disabled gdbserver\n"); } else { --=20 2.49.0