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 B1BC2471B7; Thu, 8 Jan 2026 15:48:36 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 03B3B4067A; Thu, 8 Jan 2026 15:48:36 +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 B97C94066B 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-f71.google.com (mail-lf1-f71.google.com [209.85.167.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-624-E2evZJ1EPgy48kDKyYlWeA-1; Thu, 08 Jan 2026 09:48:33 -0500 X-MC-Unique: E2evZJ1EPgy48kDKyYlWeA-1 X-Mimecast-MFC-AGG-ID: E2evZJ1EPgy48kDKyYlWeA_1767883712 Received: by mail-lf1-f71.google.com with SMTP id 2adb3069b0e04-59b6dfc0cbaso1352554e87.3 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=FycOx501cCzo1Zr1vbi0v3Vng/ZfmJSpjIaUkxjSOU6d1/A1ABRdM4CmiRV7QXBPjr 53XODchceeX2QbmMWGD3I+g9HV/wxQUZhdP0enULrr7dMcY48xBl55yA7b/jjfplwkLp sBalauUBn77C7hYjXYk/6/icxhtSE4FtsPubK3eI9p3mnVDPfAYARXbcO/YNTJGe90X8 P5MjBZxdmtH+6SfMXpNxMcpxZ50sMhDFbTmrcPoWmfGugZrx6zXUb3jJD9PNAuSfK4Qb pbkTU5UqaiJF6m/Qu+CcTS1B9Dd4+PXBYxckI2rBgcvchctXXKYmFKmxduJsineioGxY UF9A== X-Gm-Message-State: AOJu0YxxVpSpbn3So8/C/93KSR3NRxGFnkgU7iKyfqIHYVCJeLFZMeOt 3h665edA/izKuOjI41TckXZ4fQwq/FRth6Mv+3PgbEhuxWsROcHZb0P2tf22xQvZQNC8YPuOpqB z1XCzFbvuV4jXkln3enw++U6lEEjpQ41kRafwsjDF6UkhIBNfwPL0O3m/Svt/evoP8rjtx0m5V2 Ez3SAx2p6yDHvaPyGJu0I= X-Gm-Gg: AY/fxX4Zqffgx4RRxD8/RkoYFRd23ZCK1PtJhkAnOekNCWpKSw79wm8c8YyIsYOyqPD EYFyvLbC0Dz4FlRc3ShDaZb67kI6sSJ6w71bmIKkTC1jjbGnv+h2dhoHc9TMrne4DHqiXGMPD1E IKl/5QoI2WVjgDZxg9v1Aio7Iu4gWyoJwGVcd7Bu5Idjngaj/tVdxK7OIPP+7fjbZlVH40 X-Received: by 2002:a05:6512:33cd:b0:59b:685b:b3ca with SMTP id 2adb3069b0e04-59b6ef069c9mr2215526e87.5.1767883711568; 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: CXjdUnEcbcSOXsi8CE22NxNg5F_vXWuA3PcvgdHIDfM_1767883712 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-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