From patchwork Mon Apr 22 12:52:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manos Pitsidianakis X-Patchwork-Id: 1926196 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=VreUoioi; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4VNQCL744Rz1yZq for ; Mon, 22 Apr 2024 22:53:02 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rytAE-0001gJ-U8; Mon, 22 Apr 2024 08:52:54 -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 1rytA6-0001Ys-2s for qemu-devel@nongnu.org; Mon, 22 Apr 2024 08:52:47 -0400 Received: from mail-lj1-x233.google.com ([2a00:1450:4864:20::233]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rytA4-0006Ol-EQ for qemu-devel@nongnu.org; Mon, 22 Apr 2024 08:52:45 -0400 Received: by mail-lj1-x233.google.com with SMTP id 38308e7fff4ca-2dd615b6c44so14036941fa.0 for ; Mon, 22 Apr 2024 05:52:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1713790362; x=1714395162; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=016dPan8iD0jaVU8GbAMdou82zyqcKjvvzowQZ1c5wk=; b=VreUoioiBEbZvE/gNOfb1M3pCEcXJXOS+bYCaQOh4OqEdVdG7bjrXbgWZyvGaIhrpG DeG57aSXF4irN2rdGERL4KaCCeYwebbUd/0rlIbHHWJ8XLRhpBN865iBpGZEgXpcR7Ls Le1Kq5cWm76sY/S1Q4T+QmPpanVfmRoMfVOyQTccdYFe54FQGn/79y4C3EFfceIMtb7a l8CQcJjFRxYnagu1H6WM7NPH3aU70exfi6GpfrHtB9lLDL4yTC+oZ2fQexXg+sUFQHd0 h77NvW6v0MTQ7Ed3+O2JFhmbNTUcGnq5wypAIW1voK2qCnU5K94bvgHQphkcccAYyjiN mU/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713790362; x=1714395162; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=016dPan8iD0jaVU8GbAMdou82zyqcKjvvzowQZ1c5wk=; b=Ry7T9D1ccMjcvO171B0g7V5hZR9iC0XZ+cfsOXP917vC7tEJtgJo3ppMFssHKIouq4 wNqX2E/S4F8G/eE3xyf4rIkr/Bm+gCflJ4mKxLY8eQbBfiQpofsR3WsmHt7mRa4cIevD eqkiXjy/kesXVnSIIp+WzcO23PjacTV0TUc9V6KBHzfl1OG0raJ6iF9AMUsmpLOzHyeC tESlU9v9zUnJtWIMKUyYg5a0dvGx4t+TKSHUuLEBW54MBWpvfuP0L31kS+KSBYuS6Ps5 bMlypLIsuDWo8KIyM6Mf+EY5GyYLliH/RTwj85S75+z+Qo+W48J2pbmCRYjnOh7O7elq NELw== X-Gm-Message-State: AOJu0YwqFIfoWJWkstKVkJNp3D+vamI7BBPZ04oCzSo6RZtFIPNm3B5v fmdY+FQNIf3JMLkhzaRDhHKnGkAw95WJgw7vIy9TxyNtlsy79LHZnQlh4W4INqYIwI6GE8p/2qH v X-Google-Smtp-Source: AGHT+IFN99FDses3uFukVhJUkq6/1Lb3OUcMf2Qh6An4MVy2EryRsR68TDkdYvRHy5nAfX10LSjwbA== X-Received: by 2002:ac2:4bc3:0:b0:518:91fd:b343 with SMTP id o3-20020ac24bc3000000b0051891fdb343mr7364183lfq.68.1713790362127; Mon, 22 Apr 2024 05:52:42 -0700 (PDT) Received: from localhost.localdomain (adsl-53.37.6.0.tellas.gr. [37.6.0.53]) by smtp.gmail.com with ESMTPSA id l10-20020a1709066b8a00b00a55bfb4e3b6sm593574ejr.217.2024.04.22.05.52.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Apr 2024 05:52:41 -0700 (PDT) From: Manos Pitsidianakis To: qemu-devel@nongnu.org, qemu-stable@nongnu.org Cc: Gerd Hoffmann , "Michael S. Tsirkin" , Zheyu Ma , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH v1 1/4] virtio-snd: add virtio_snd_is_config_valid() Date: Mon, 22 Apr 2024 15:52:11 +0300 Message-ID: <491c651b075ac51f1c54f561bebaaac6dfc7f8de.1713789200.git.manos.pitsidianakis@linaro.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::233; envelope-from=manos.pitsidianakis@linaro.org; helo=mail-lj1-x233.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Factor out virtio_snd_config value validation in a separate function, in order to re-use it in follow up commits. Signed-off-by: Manos Pitsidianakis --- hw/audio/virtio-snd.c | 47 ++++++++++++++++++++++++++----------------- 1 file changed, 29 insertions(+), 18 deletions(-) diff --git a/hw/audio/virtio-snd.c b/hw/audio/virtio-snd.c index c80b58bf5d..7ca9ed251c 100644 --- a/hw/audio/virtio-snd.c +++ b/hw/audio/virtio-snd.c @@ -1045,6 +1045,34 @@ virtio_snd_vm_state_change(void *opaque, bool running, } } +static bool +virtio_snd_is_config_valid(virtio_snd_config snd_conf, Error **errp) +{ + if (snd_conf.jacks > 8) { + error_setg(errp, + "Invalid number of jacks: %"PRIu32 + ": maximum value is 8", snd_conf.jacks); + return false; + } + if (snd_conf.streams < 1 || snd_conf.streams > 64) { + error_setg(errp, + "Invalid number of streams: %"PRIu32 + ": minimum value is 1, maximum value is 64", + snd_conf.streams); + return false; + } + + if (snd_conf.chmaps > VIRTIO_SND_CHMAP_MAX_SIZE) { + error_setg(errp, + "Invalid number of channel maps: %"PRIu32 + ": VIRTIO v1.2 sets the maximum value at %"PRIu32, + snd_conf.chmaps, VIRTIO_SND_CHMAP_MAX_SIZE); + return false; + } + + return true; +} + static void virtio_snd_realize(DeviceState *dev, Error **errp) { ERRP_GUARD(); @@ -1055,24 +1083,7 @@ static void virtio_snd_realize(DeviceState *dev, Error **errp) trace_virtio_snd_realize(vsnd); - /* check number of jacks and streams */ - if (vsnd->snd_conf.jacks > 8) { - error_setg(errp, - "Invalid number of jacks: %"PRIu32, - vsnd->snd_conf.jacks); - return; - } - if (vsnd->snd_conf.streams < 1 || vsnd->snd_conf.streams > 10) { - error_setg(errp, - "Invalid number of streams: %"PRIu32, - vsnd->snd_conf.streams); - return; - } - - if (vsnd->snd_conf.chmaps > VIRTIO_SND_CHMAP_MAX_SIZE) { - error_setg(errp, - "Invalid number of channel maps: %"PRIu32, - vsnd->snd_conf.chmaps); + if (!virtio_snd_is_config_valid(vsnd->snd_conf, errp)) { return; } From patchwork Mon Apr 22 12:52:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manos Pitsidianakis X-Patchwork-Id: 1926199 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Tsirkin" , Zheyu Ma , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH v1 2/4] virtio-snd: factor card setup out of realize func Date: Mon, 22 Apr 2024 15:52:12 +0300 Message-ID: <62de737e3320e647454a306bb87c6eb20a2c0cfb.1713789200.git.manos.pitsidianakis@linaro.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::52b; envelope-from=manos.pitsidianakis@linaro.org; helo=mail-ed1-x52b.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Extract audio card setup logic out of the device realize callback so that it can be re-used in follow up commits. Signed-off-by: Manos Pitsidianakis --- hw/audio/virtio-snd.c | 72 ++++++++++++++++++++++++------------------- 1 file changed, 41 insertions(+), 31 deletions(-) diff --git a/hw/audio/virtio-snd.c b/hw/audio/virtio-snd.c index 7ca9ed251c..82dd320ebe 100644 --- a/hw/audio/virtio-snd.c +++ b/hw/audio/virtio-snd.c @@ -1073,27 +1073,21 @@ virtio_snd_is_config_valid(virtio_snd_config snd_conf, Error **errp) return true; } -static void virtio_snd_realize(DeviceState *dev, Error **errp) +/* Registers card and sets up streams according to configuration. */ +static bool virtio_snd_setup(VirtIOSound *vsnd, Error **errp) { ERRP_GUARD(); - VirtIOSound *vsnd = VIRTIO_SND(dev); - VirtIODevice *vdev = VIRTIO_DEVICE(dev); virtio_snd_pcm_set_params default_params = { 0 }; uint32_t status; - trace_virtio_snd_realize(vsnd); - if (!virtio_snd_is_config_valid(vsnd->snd_conf, errp)) { - return; + return false; } if (!AUD_register_card("virtio-sound", &vsnd->card, errp)) { - return; + return false; } - vsnd->vmstate = - qemu_add_vm_change_state_handler(virtio_snd_vm_state_change, vsnd); - vsnd->pcm = g_new0(VirtIOSoundPCM, 1); vsnd->pcm->snd = vsnd; vsnd->pcm->streams = @@ -1101,9 +1095,6 @@ static void virtio_snd_realize(DeviceState *dev, Error **errp) vsnd->pcm->pcm_params = g_new0(virtio_snd_pcm_set_params, vsnd->snd_conf.streams); - virtio_init(vdev, VIRTIO_ID_SOUND, sizeof(virtio_snd_config)); - virtio_add_feature(&vsnd->features, VIRTIO_F_VERSION_1); - /* set default params for all streams */ default_params.features = 0; default_params.buffer_bytes = cpu_to_le32(8192); @@ -1111,6 +1102,41 @@ static void virtio_snd_realize(DeviceState *dev, Error **errp) default_params.channels = 2; default_params.format = VIRTIO_SND_PCM_FMT_S16; default_params.rate = VIRTIO_SND_PCM_RATE_48000; + + for (uint32_t i = 0; i < vsnd->snd_conf.streams; i++) { + status = virtio_snd_set_pcm_params(vsnd, i, &default_params); + if (status != cpu_to_le32(VIRTIO_SND_S_OK)) { + error_setg(errp, + "Can't initialize stream params, device responded with %s.", + print_code(status)); + return false; + } + status = virtio_snd_pcm_prepare(vsnd, i); + if (status != cpu_to_le32(VIRTIO_SND_S_OK)) { + error_setg(errp, + "Can't prepare streams, device responded with %s.", + print_code(status)); + return false; + } + } + + return true; +} + +static void virtio_snd_realize(DeviceState *dev, Error **errp) +{ + ERRP_GUARD(); + VirtIOSound *vsnd = VIRTIO_SND(dev); + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + + trace_virtio_snd_realize(vsnd); + + vsnd->vmstate = + qemu_add_vm_change_state_handler(virtio_snd_vm_state_change, vsnd); + + virtio_init(vdev, VIRTIO_ID_SOUND, sizeof(virtio_snd_config)); + virtio_add_feature(&vsnd->features, VIRTIO_F_VERSION_1); + vsnd->queues[VIRTIO_SND_VQ_CONTROL] = virtio_add_queue(vdev, 64, virtio_snd_handle_ctrl); vsnd->queues[VIRTIO_SND_VQ_EVENT] = @@ -1123,26 +1149,10 @@ static void virtio_snd_realize(DeviceState *dev, Error **errp) QTAILQ_INIT(&vsnd->cmdq); QSIMPLEQ_INIT(&vsnd->invalid); - for (uint32_t i = 0; i < vsnd->snd_conf.streams; i++) { - status = virtio_snd_set_pcm_params(vsnd, i, &default_params); - if (status != cpu_to_le32(VIRTIO_SND_S_OK)) { - error_setg(errp, - "Can't initialize stream params, device responded with %s.", - print_code(status)); - goto error_cleanup; - } - status = virtio_snd_pcm_prepare(vsnd, i); - if (status != cpu_to_le32(VIRTIO_SND_S_OK)) { - error_setg(errp, - "Can't prepare streams, device responded with %s.", - print_code(status)); - goto error_cleanup; - } + if (virtio_snd_setup(vsnd, errp)) { + return; } - return; - -error_cleanup: virtio_snd_unrealize(dev); } From patchwork Mon Apr 22 12:52:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manos Pitsidianakis X-Patchwork-Id: 1926197 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=Qu01Zx1Y; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; 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[37.6.0.53]) by smtp.gmail.com with ESMTPSA id l10-20020a1709066b8a00b00a55bfb4e3b6sm593574ejr.217.2024.04.22.05.52.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Apr 2024 05:52:48 -0700 (PDT) From: Manos Pitsidianakis To: qemu-devel@nongnu.org, qemu-stable@nongnu.org Cc: Gerd Hoffmann , "Michael S. Tsirkin" , Zheyu Ma , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH v1 3/4] virtio-snd: factor card removal out of unrealize() Date: Mon, 22 Apr 2024 15:52:13 +0300 Message-ID: <2231ee9229ba7259763c9814e6ec119d8954b81c.1713789200.git.manos.pitsidianakis@linaro.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::62a; envelope-from=manos.pitsidianakis@linaro.org; helo=mail-ej1-x62a.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Extract audio card removal logic out of the device unrealize callback so that it can be re-used in follow up commits. Signed-off-by: Manos Pitsidianakis --- hw/audio/virtio-snd.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/hw/audio/virtio-snd.c b/hw/audio/virtio-snd.c index 82dd320ebe..a9cfaea046 100644 --- a/hw/audio/virtio-snd.c +++ b/hw/audio/virtio-snd.c @@ -1343,15 +1343,11 @@ static inline void virtio_snd_pcm_flush(VirtIOSoundPCMStream *stream) } } -static void virtio_snd_unrealize(DeviceState *dev) +/* Remove audio card and cleanup streams. */ +static void virtio_snd_unsetup(VirtIOSound *vsnd) { - VirtIODevice *vdev = VIRTIO_DEVICE(dev); - VirtIOSound *vsnd = VIRTIO_SND(dev); VirtIOSoundPCMStream *stream; - qemu_del_vm_change_state_handler(vsnd->vmstate); - trace_virtio_snd_unrealize(vsnd); - if (vsnd->pcm) { if (vsnd->pcm->streams) { for (uint32_t i = 0; i < vsnd->snd_conf.streams; i++) { @@ -1370,6 +1366,18 @@ static void virtio_snd_unrealize(DeviceState *dev) vsnd->pcm = NULL; } AUD_remove_card(&vsnd->card); +} + +static void virtio_snd_unrealize(DeviceState *dev) +{ + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + VirtIOSound *vsnd = VIRTIO_SND(dev); + + qemu_del_vm_change_state_handler(vsnd->vmstate); + trace_virtio_snd_unrealize(vsnd); + + virtio_snd_unsetup(vsnd); + qemu_mutex_destroy(&vsnd->cmdq_mutex); virtio_delete_queue(vsnd->queues[VIRTIO_SND_VQ_CONTROL]); virtio_delete_queue(vsnd->queues[VIRTIO_SND_VQ_EVENT]); From patchwork Mon Apr 22 12:52:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manos Pitsidianakis X-Patchwork-Id: 1926198 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=e9LfsEo/; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; 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[37.6.0.53]) by smtp.gmail.com with ESMTPSA id l10-20020a1709066b8a00b00a55bfb4e3b6sm593574ejr.217.2024.04.22.05.52.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Apr 2024 05:52:53 -0700 (PDT) From: Manos Pitsidianakis To: qemu-devel@nongnu.org, qemu-stable@nongnu.org Cc: Gerd Hoffmann , "Michael S. Tsirkin" , Zheyu Ma , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH v1 4/4] virtio_snd_set_config: validate and re-setup card Date: Mon, 22 Apr 2024 15:52:14 +0300 Message-ID: <4556f526055b140d949189d78e7c46b261302373.1713789200.git.manos.pitsidianakis@linaro.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::52c; envelope-from=manos.pitsidianakis@linaro.org; helo=mail-ed1-x52c.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Validate new configuration values and re-setup audio card. Changing the number of streams via virtio_snd_set_config() did not re-configure the audio card, leaving it in an invalid state. This can be demonstrated by this heap buffer overflow: ```shell cat << EOF | qemu-system-x86_64 -display none \ -machine accel=qtest -m 512M -machine q35 -device \ virtio-sound,audiodev=my_audiodev,streams=2 -audiodev \ alsa,id=my_audiodev -qtest stdio outl 0xcf8 0x80001804 outw 0xcfc 0x06 outl 0xcf8 0x80001820 outl 0xcfc 0xe0008000 write 0xe0008016 0x1 0x03 write 0xe0008020 0x4 0x00901000 write 0xe0008028 0x4 0x00a01000 write 0xe000801c 0x1 0x01 write 0xe000a004 0x1 0x40 write 0x10c000 0x1 0x02 write 0x109001 0x1 0xc0 write 0x109002 0x1 0x10 write 0x109008 0x1 0x04 write 0x10a002 0x1 0x01 write 0xe000b00d 0x1 0x00 EOF ``` When built with `--enable-sanitizers`, QEMU prints this error: ERROR: AddressSanitizer: heap-buffer-overflow [..snip..] in virtio_snd_handle_rx_xfer(). Closes #2296. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2296 Reported-by: Zheyu Ma Suggested-by: Zheyu Ma Signed-off-by: Manos Pitsidianakis --- hw/audio/virtio-snd.c | 35 +++++++++++++++++++++-------------- 1 file changed, 21 insertions(+), 14 deletions(-) diff --git a/hw/audio/virtio-snd.c b/hw/audio/virtio-snd.c index a9cfaea046..d47af2ed69 100644 --- a/hw/audio/virtio-snd.c +++ b/hw/audio/virtio-snd.c @@ -36,7 +36,11 @@ static void virtio_snd_pcm_out_cb(void *data, int available); static void virtio_snd_process_cmdq(VirtIOSound *s); static void virtio_snd_pcm_flush(VirtIOSoundPCMStream *stream); static void virtio_snd_pcm_in_cb(void *data, int available); +static bool virtio_snd_setup(VirtIOSound *vsnd, Error **errp); +static void virtio_snd_unsetup(VirtIOSound *vsnd); static void virtio_snd_unrealize(DeviceState *dev); +static bool virtio_snd_is_config_valid(virtio_snd_config snd_conf, + Error **errp); static uint32_t supported_formats = BIT(VIRTIO_SND_PCM_FMT_S8) | BIT(VIRTIO_SND_PCM_FMT_U8) @@ -111,23 +115,26 @@ static void virtio_snd_set_config(VirtIODevice *vdev, const uint8_t *config) { VirtIOSound *s = VIRTIO_SND(vdev); - const virtio_snd_config *sndconfig = - (const virtio_snd_config *)config; + virtio_snd_config new_value = + *(const virtio_snd_config *)config; + le32_to_cpus(&new_value.jacks); + le32_to_cpus(&new_value.streams); + le32_to_cpus(&new_value.chmaps); - trace_virtio_snd_set_config(vdev, - s->snd_conf.jacks, - sndconfig->jacks, - s->snd_conf.streams, - sndconfig->streams, - s->snd_conf.chmaps, - sndconfig->chmaps); - - memcpy(&s->snd_conf, sndconfig, sizeof(virtio_snd_config)); - le32_to_cpus(&s->snd_conf.jacks); - le32_to_cpus(&s->snd_conf.streams); - le32_to_cpus(&s->snd_conf.chmaps); + trace_virtio_snd_set_config(vdev, + s->snd_conf.jacks, + new_value.jacks, + s->snd_conf.streams, + new_value.streams, + s->snd_conf.chmaps, + new_value.chmaps); + if (virtio_snd_is_config_valid(new_value, &error_warn)) { + virtio_snd_unsetup(s); + s->snd_conf = new_value; + virtio_snd_setup(s, &error_fatal); + } } static void