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 X-Spam-Level: X-Spam-Status: No, score=-5.0 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CD71C56201 for ; Thu, 12 Nov 2020 16:26:57 +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 D2EF820B80 for ; Thu, 12 Nov 2020 16:26:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="BaIV0Sns" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D2EF820B80 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:50420 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kdFR1-0003Eh-J5 for qemu-devel@archiver.kernel.org; Thu, 12 Nov 2020 11:26:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:42360) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kdFQG-0002ga-Av for qemu-devel@nongnu.org; Thu, 12 Nov 2020 11:26:08 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:51781) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kdFQA-000154-QJ for qemu-devel@nongnu.org; Thu, 12 Nov 2020 11:26:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1605198360; 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=GU/fszsT5DbVAGyumWOWwYYvwCZei6sg0pVrPVrBB34=; b=BaIV0SnsaEmpf9a88OZI51tGBEnXh1LtfCPm02gAgivZVUAjoMy3A6qXNK10kBQzcfIyMb dFbps0gppbc8zkFwtEAzIXJJhjmERGeSlOFmxvKJY7CzkUS02FX0cdZZokblcbWr2uXnXr t5RBzKdN7Kx+/r2HLsVXqN2ZBNOKvrY= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-212-ayo-RSVvORuKIBQ7o-y2gg-1; Thu, 12 Nov 2020 11:25:58 -0500 X-MC-Unique: ayo-RSVvORuKIBQ7o-y2gg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 84BB18C32FC; Thu, 12 Nov 2020 16:25:57 +0000 (UTC) Received: from work-vm (ovpn-115-60.ams2.redhat.com [10.36.115.60]) by smtp.corp.redhat.com (Postfix) with ESMTPS id EDD4360C0F; Thu, 12 Nov 2020 16:25:52 +0000 (UTC) Date: Thu, 12 Nov 2020 16:25:50 +0000 From: "Dr. David Alan Gilbert" To: Haotian Li Subject: Re: [PATCH v3 0/3] virtiofsd: fix some accessing NULL pointer problem Message-ID: <20201112162550.GH13424@work-vm> References: <3477d902-ace9-1aa1-531a-9d20d6e93a05@huawei.com> MIME-Version: 1.0 In-Reply-To: <3477d902-ace9-1aa1-531a-9d20d6e93a05@huawei.com> User-Agent: Mutt/1.14.6 (2020-07-11) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=63.128.21.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/12 00:52:29 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] 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, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: virtio-fs@redhat.com, linfeilong@huawei.com, qemu-devel@nongnu.org, liuzhiqiang26@huawei.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * Haotian Li (lihaotian9@huawei.com) wrote: > Hi, > We find some potential NULL pointer bugs on tools/virtiofsd. > Three patches are made to fix them Queued > Haotian Li (3): > tools/virtiofsd/buffer.c: check whether buf is NULL in > fuse_bufvec_advance func > virtiofsd: check whether lo_map_reserve returns NULL in main func > virtiofsd: check whether strdup lo.source return NULL in main func. > > tools/virtiofsd/buffer.c | 4 ++++ > tools/virtiofsd/passthrough_ll.c | 16 +++++++++++++++- > 2 files changed, 19 insertions(+), 1 deletion(-) > > -- > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK