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 64D30A0503; Wed, 18 May 2022 12:18:20 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 9E36542B8A; Wed, 18 May 2022 12:18:16 +0200 (CEST) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by mails.dpdk.org (Postfix) with ESMTP id 53B7D42B6F for ; Wed, 18 May 2022 12:18:14 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1652869093; 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=oZ/y7nclR7WR6EXfbowFZSQwikaaJO0W8mjCzaCSOfw=; b=D4L1C1MUmqlx4YCC0UUXa8azzzWZoHgwHJayPZMS6p47EiTOizl1F2VLlIweeONDMFExyl OzgwP6lhQr4/lR7wzo9QYY1fZbzT/mPW+7CKGA6lvmf6adRVxEwW/i6cCjEk31f42jlrOc 3aGhmbMLHpG4quBms4V2Phw0rlx0n4g= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-609-s2RfLtrANcSXyNvsyPkP6Q-1; Wed, 18 May 2022 06:18:10 -0400 X-MC-Unique: s2RfLtrANcSXyNvsyPkP6Q-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4B62E3C1618C; Wed, 18 May 2022 10:18:10 +0000 (UTC) Received: from fchome.home (unknown [10.40.195.61]) by smtp.corp.redhat.com (Postfix) with ESMTP id 360A5492C14; Wed, 18 May 2022 10:18:06 +0000 (UTC) From: David Marchand To: dev@dpdk.org Cc: thomas@monjalon.net, ferruh.yigit@xilinx.com, stable@dpdk.org, Xiao Wang Subject: [PATCH 09/12] vdpa/ifc: fix build with GCC 12 Date: Wed, 18 May 2022 12:16:54 +0200 Message-Id: <20220518101657.1230416-10-david.marchand@redhat.com> In-Reply-To: <20220518101657.1230416-1-david.marchand@redhat.com> References: <20220518101657.1230416-1-david.marchand@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.10 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=david.marchand@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 GCC 12 raises the following warning: ../drivers/vdpa/ifc/ifcvf_vdpa.c: In function ‘vdpa_enable_vfio_intr’: ../drivers/vdpa/ifc/ifcvf_vdpa.c:383:62: error: writing 4 bytes into a region of size 0 [-Werror=stringop-overflow=] 383 | fd_ptr[RTE_INTR_VEC_RXTX_OFFSET + i] = fd; | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~ ../drivers/vdpa/ifc/ifcvf_vdpa.c:348:14: note: at offset 32 into destination object ‘irq_set_buf’ of size 32 348 | char irq_set_buf[MSIX_IRQ_SET_BUF_LEN]; | ^~~~~~~~~~~ Validate number of vrings to avoid out of bound access. Cc: stable@dpdk.org Signed-off-by: David Marchand --- drivers/vdpa/ifc/ifcvf_vdpa.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/vdpa/ifc/ifcvf_vdpa.c b/drivers/vdpa/ifc/ifcvf_vdpa.c index 9f05595b6b..6708849bd3 100644 --- a/drivers/vdpa/ifc/ifcvf_vdpa.c +++ b/drivers/vdpa/ifc/ifcvf_vdpa.c @@ -354,6 +354,8 @@ vdpa_enable_vfio_intr(struct ifcvf_internal *internal, bool m_rx) vring.callfd = -1; nr_vring = rte_vhost_get_vring_num(internal->vid); + if (nr_vring > IFCVF_MAX_QUEUES * 2) + return -1; irq_set = (struct vfio_irq_set *)irq_set_buf; irq_set->argsz = sizeof(irq_set_buf); -- 2.36.1