From patchwork Sat Nov 5 02:07:27 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cao jin X-Patchwork-Id: 9413587 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E683E60573 for ; Sat, 5 Nov 2016 02:17:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D2BE02B0C6 for ; Sat, 5 Nov 2016 02:17:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B24B12B13B; Sat, 5 Nov 2016 02:17:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 05CDC2B0C6 for ; Sat, 5 Nov 2016 02:17:58 +0000 (UTC) Received: from localhost ([::1]:41826 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c2qYP-0005Yn-93 for patchwork-qemu-devel@patchwork.kernel.org; Fri, 04 Nov 2016 22:17:57 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59605) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c2qMC-0005CX-6W for qemu-devel@nongnu.org; Fri, 04 Nov 2016 22:05:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c2qMA-00072o-Ht for qemu-devel@nongnu.org; Fri, 04 Nov 2016 22:05:20 -0400 Received: from [59.151.112.132] (port=12985 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c2qMA-0006vI-6k for qemu-devel@nongnu.org; Fri, 04 Nov 2016 22:05:18 -0400 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="12688940" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 05 Nov 2016 10:05:01 +0800 Received: from G08CNEXCHPEKD03.g08.fujitsu.local (unknown [10.167.33.85]) by cn.fujitsu.com (Postfix) with ESMTP id 616C441B5F4E; Sat, 5 Nov 2016 10:05:03 +0800 (CST) Received: from G08FNSTD140223.g08.fujitsu.local (10.167.226.69) by G08CNEXCHPEKD03.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.279.2; Sat, 5 Nov 2016 10:05:03 +0800 From: Cao jin To: Date: Sat, 5 Nov 2016 10:07:27 +0800 Message-ID: <1478311649-22027-9-git-send-email-caoj.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1478311649-22027-1-git-send-email-caoj.fnst@cn.fujitsu.com> References: <1478311649-22027-1-git-send-email-caoj.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.69] X-yoursite-MailScanner-ID: 616C441B5F4E.AA502 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: caoj.fnst@cn.fujitsu.com X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 59.151.112.132 Subject: [Qemu-devel] [PATCH v6 08/10] vmxnet3: fix reference leak issue X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Dmitry Fleytman , Jason Wang , Markus Armbruster , "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP On migration target, msix_vector_use() will be called in vmxnet3_post_load() in second time, without a matching second call to msi_vector_unuse(), which results in vector reference leak. CC: Dmitry Fleytman CC: Jason Wang CC: Markus Armbruster CC: Michael S. Tsirkin Reviewed-by: Markus Armbruster Reviewed-by: Dmitry Fleytman Signed-off-by: Cao jin --- hw/net/vmxnet3.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c index a433cc0..45e125e 100644 --- a/hw/net/vmxnet3.c +++ b/hw/net/vmxnet3.c @@ -2552,21 +2552,11 @@ static void vmxnet3_put_rxq_descr(QEMUFile *f, void *pv, size_t size) static int vmxnet3_post_load(void *opaque, int version_id) { VMXNET3State *s = opaque; - PCIDevice *d = PCI_DEVICE(s); net_tx_pkt_init(&s->tx_pkt, PCI_DEVICE(s), s->max_tx_frags, s->peer_has_vhdr); net_rx_pkt_init(&s->rx_pkt, s->peer_has_vhdr); - if (s->msix_used) { - if (!vmxnet3_use_msix_vectors(s, VMXNET3_MAX_INTRS)) { - VMW_WRPRN("Failed to re-use MSI-X vectors"); - msix_uninit(d, &s->msix_bar, &s->msix_bar); - s->msix_used = false; - return -1; - } - } - vmxnet3_validate_queues(s); vmxnet3_validate_interrupts(s);