From nobody Sun Apr 13 18:01:46 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1542042727652569.0755439256046; Mon, 12 Nov 2018 09:12:07 -0800 (PST) Received: from localhost ([::1]:49773 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gMFkp-0006IT-WD for importer@patchew.org; Mon, 12 Nov 2018 12:12:04 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59758) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gMFfO-0000Qo-62 for qemu-devel@nongnu.org; Mon, 12 Nov 2018 12:06:26 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gMFfF-0006o2-9w for qemu-devel@nongnu.org; Mon, 12 Nov 2018 12:06:20 -0500 Received: from mx1.redhat.com ([209.132.183.28]:45488) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gMFfD-0006lR-6n; Mon, 12 Nov 2018 12:06:15 -0500 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DD7A83082A40; Mon, 12 Nov 2018 17:06:13 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-117-3.ams2.redhat.com [10.36.117.3]) by smtp.corp.redhat.com (Postfix) with ESMTP id CF64819743; Mon, 12 Nov 2018 17:06:12 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Date: Mon, 12 Nov 2018 18:05:53 +0100 Message-Id: <20181112170603.23986-5-kwolf@redhat.com> In-Reply-To: <20181112170603.23986-1-kwolf@redhat.com> References: <20181112170603.23986-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.45]); Mon, 12 Nov 2018 17:06:13 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 04/14] nvme: don't unref ctrl_mem when device unrealized 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: kwolf@redhat.com, peter.maydell@linaro.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Li Qiang Currently, when hotplug/unhotplug nvme device, it will cause an assert in object.c. Following is the backtrack: ERROR:qom/object.c:981:object_unref: assertion failed: (obj->ref > 0) Thread 2 "qemu-system-x86" received signal SIGABRT, Aborted. [Switching to Thread 0x7fffcbd32700 (LWP 18844)] 0x00007fffdb9e4fff in raise () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt /lib/x86_64-linux-gnu/libglib-2.0.so.0 /lib/x86_64-linux-gnu/libglib-2.0.so.0 qom/object.c:981 /home/liqiang02/qemu-upstream/qemu/memory.c:1732 /home/liqiang02/qemu-upstream/qemu/memory.c:285 util/qemu-thread-posix.c:504 /lib/x86_64-linux-gnu/libpthread.so.0 This is caused by memory_region_unref in nvme_exit. Remove it to make the PCIdevice refcount correct. Signed-off-by: Li Qiang Reviewed-by: Igor Mammedov Signed-off-by: Kevin Wolf --- hw/block/nvme.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index fc7dacb816..359a06d0ad 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -1331,9 +1331,6 @@ static void nvme_exit(PCIDevice *pci_dev) g_free(n->namespaces); g_free(n->cq); g_free(n->sq); - if (n->cmbsz) { - memory_region_unref(&n->ctrl_mem); - } =20 msix_uninit_exclusive_bar(pci_dev); } --=20 2.19.1