From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id D33E9471B7 for ; Thu, 8 Jan 2026 15:48:35 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id CCF714027A; Thu, 8 Jan 2026 15:48:35 +0100 (CET) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by mails.dpdk.org (Postfix) with ESMTP id A5BD94027A for ; Thu, 8 Jan 2026 15:48:34 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1767883714; 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: in-reply-to:in-reply-to:references:references; bh=I74MO8g+x4LOOoS9ScS5ELiZ92fLdU/4wpqWWfhTOgg=; b=jVtuigeCdFoqfbF3CrIYXHMdXPEscXlFtSWKL8jYUQBEH7yMVv6n8l5s7BzLN2BlFSAVe3 nVi1bvrSY0EpJavEOzgSrfh4mq10Jd7AL3oy7MvFNbOOEsSdoz55bHypvFg6eJU1DYeBNs i1TIkFP5xlMcJyB/MJk+eDxdUKtE1iA= Received: from mail-lf1-f69.google.com (mail-lf1-f69.google.com [209.85.167.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-664-AQkJ4DRqNYih8sNCPWslRA-1; Thu, 08 Jan 2026 09:48:33 -0500 X-MC-Unique: AQkJ4DRqNYih8sNCPWslRA-1 X-Mimecast-MFC-AGG-ID: AQkJ4DRqNYih8sNCPWslRA_1767883712 Received: by mail-lf1-f69.google.com with SMTP id 2adb3069b0e04-59b6fb01675so2601671e87.2 for ; Thu, 08 Jan 2026 06:48:32 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767883711; x=1768488511; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=I74MO8g+x4LOOoS9ScS5ELiZ92fLdU/4wpqWWfhTOgg=; b=Nn0S8avmv6RZVgJqKUTvdm5u+A/k9yW3k5O3cCoy2d+JWmXCp6rDgop1aIqYnwr2RO G5M8dZfo8db9N+/mWs4gAdMObe4DYKbdW0iyF+ff1EIaTUWznM/dpYPpuxmLNzPYM2cQ tthqYKOs94hJxLrN6PUz/f9fPjQ0s9ILH/yBScmBwYJ8VKHwT5PB6JKWWV9ENnALapQf mTYsx0Yv9FX7rQ0Gifze6aMnMjIrercaLQSyC6x643Yx4Tjd7vNmiWlMUnlaKnazwBup qoLDwQJjZUh8H0IPYj04ZZS+9iQB6xZ1a4MA2o/eo44jmWDrGOpnSguFPa6unMLXzebe BurA== X-Forwarded-Encrypted: i=1; AJvYcCXKuKMnYwIWLX8un3WyfLTkKrcOqgrZ8tWlU4GHu+zD9mF3FhVVaX16eFH9yaZY/NbDnXpcD4w=@dpdk.org X-Gm-Message-State: AOJu0Yz2aURP2xAQic2eJ1vUY3jcCuqWiT+TYBk4zBZFen6wMB+YLCMV j9YfqGi2I618OaweD5JXAsdUpPlq2WQKtSG8/tT65QQ1fvw0qAU7V8qZvV/eFX+R/3aWg3QjzV0 fUtDlelFakRwdviULmXTaLL9we4cKH2vFS+tNsO/7+U7KcXe0Tz5GPbMFMhhdnCSUDSptruJbin cPyA+TT1zqNMOGBbBAOE4kRYE= X-Gm-Gg: AY/fxX7DwMLKDlkZYk6Za8NVHPEf8eipkQTMsNdfOxkyMvGojtGg2HPQzikdUPaQxTb /k0CBxMSAZKEQHs0OrlCrwhF1+uiG8Tvg+O2pVYxBCts6ICD3nHLZGsk5smhikzuWGajJYPZKYf uWGaNi7voetOHAOmA7GioNzXr63ycT+KwVuSlX7gSLS4z7nGghJk/AJPfPNRW2BS4wa7+Y X-Received: by 2002:a05:6512:33cd:b0:59b:685b:b3ca with SMTP id 2adb3069b0e04-59b6ef069c9mr2215528e87.5.1767883711573; Thu, 08 Jan 2026 06:48:31 -0800 (PST) X-Google-Smtp-Source: AGHT+IEPbbIZHN0LF/Mqrl5mWvkVi6cJryoVRwrSB1uaGr8/HVQeVv7AvPIQpABQHUqGtvxtGx5LlE8oEnRN+Pyw+ss= X-Received: by 2002:a05:6512:33cd:b0:59b:685b:b3ca with SMTP id 2adb3069b0e04-59b6ef069c9mr2215517e87.5.1767883711097; Thu, 08 Jan 2026 06:48:31 -0800 (PST) MIME-Version: 1.0 References: <20260108134951.3857110-1-maxime.coquelin@redhat.com> <20260108134951.3857110-2-maxime.coquelin@redhat.com> In-Reply-To: <20260108134951.3857110-2-maxime.coquelin@redhat.com> From: David Marchand Date: Thu, 8 Jan 2026 15:48:19 +0100 X-Gm-Features: AQt7F2rnGmC7lzuc0r02RuFZwis3sTkC73c8IV1sD8zivRjW-2_MrhzKhJ6AOus Message-ID: Subject: Re: [PATCH 1/3] vhost: fix virtqueue array size for control queue To: Maxime Coquelin Cc: dev@dpdk.org, chenbox@nvidia.com, stable@dpdk.org X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: gI7DMLo2slxGc1Wk-_HIMNbE60YQIjSO0rOwZQBVXXc_1767883712 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org On Thu, 8 Jan 2026 at 14:50, Maxime Coquelin wrote: > > When max_queue_pairs is set to VHOST_MAX_QUEUE_PAIRS (128), VDUSE > calculates total_queues as max_queue_pairs * 2 + 1 = 257 to account > for the control queue. However, the virtqueue array was sized as > VHOST_MAX_QUEUE_PAIRS * 2, causing an out-of-bounds array access. > > Fix by defining VHOST_MAX_VRING to explicitly account for the control > queue (VHOST_MAX_QUEUE_PAIRS * 2 + 1) and using it for the virtqueue > array size. > > Fixes: f0a37cc6a1e2 ("vhost: add multiqueue support to VDUSE") > Cc: stable@dpdk.org > > Signed-off-by: Maxime Coquelin Reviewed-by: David Marchand -- David Marchand