From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26414C433F5 for ; Fri, 19 Nov 2021 10:22:55 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CBD4161B66 for ; Fri, 19 Nov 2021 10:22:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org CBD4161B66 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:32908 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mo12j-0005S3-Vq for qemu-devel@archiver.kernel.org; Fri, 19 Nov 2021 05:22:54 -0500 Received: from eggs.gnu.org ([209.51.188.92]:58164) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mo10m-0003Yb-6y for qemu-devel@nongnu.org; Fri, 19 Nov 2021 05:20:52 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:44585) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mo10j-0006kW-Tf for qemu-devel@nongnu.org; Fri, 19 Nov 2021 05:20:51 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1637317249; 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; bh=GPYfCNIRXxwxh+bgkS98AicfYBv9yDlVsIV7ucYtS2A=; b=aPCjfus0cRcK0gF0hjWRM/hd46sE5ft1OjJfnWWPrD2Vl1jXZmzkPBjDJAzyy4r1+pXmB0 Up40dhWJyZ+mgO9dWBndQk1s31crX1cLhbK1U7P7UhZLa3SUnbvj3qGX1/ivvhkLgoXxcP L1GAaf/OG0beYFX/i0D7++CVPPIc9Yc= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-497-LSy7Gh1FPo2ECBkHnLAFvQ-1; Fri, 19 Nov 2021 05:20:46 -0500 X-MC-Unique: LSy7Gh1FPo2ECBkHnLAFvQ-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0D22B9F92A; Fri, 19 Nov 2021 10:20:45 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.145]) by smtp.corp.redhat.com (Postfix) with ESMTP id 50B915C1A1; Fri, 19 Nov 2021 10:20:38 +0000 (UTC) From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Subject: [PATCH 0/3] vdpa: Fix SIGSEGV on failed vdpa devices Date: Fri, 19 Nov 2021 11:20:30 +0100 Message-Id: <20211119102033.36149-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eperezma@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=216.205.24.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.7, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, 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: , Cc: Laurent Vivier , Jason Wang , qemu-stable@nongnu.org, Cindy Lu , "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Qemu falls back on userland handlers even if vhost-user and vhost-vdpa=0D cases. These assumes a tap device can handle the packets.=0D =0D If a vdpa device fail to start, it can trigger a sigsegv because of=0D that. Add dummy receivers that return no progress so it can keep=0D running.=0D =0D Tested with a modified version of vp_vdpa to fail negotiation.=0D =0D This is another bersion of the patch proposed in [1], but the subject=0D didn't match the patch anymore.=0D =0D [1] https://lists.nongnu.org/archive/html/qemu-devel/2021-11/msg03719.html= =0D =0D Eugenio P=C3=A9rez (3):=0D virtio-net: Fix indentation=0D vdpa: Add dummy receive callbacks=0D virtio-net: Fix log message=0D =0D hw/net/virtio-net.c | 13 +++++++------=0D net/vhost-vdpa.c | 16 ++++++++++++++++=0D 2 files changed, 23 insertions(+), 6 deletions(-)=0D =0D --=20=0D 2.27.0=0D =0D