From nobody Sun Apr 28 16:40:03 2024 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; dkim=fail; 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1500031749422918.7778529896017; Fri, 14 Jul 2017 04:29:09 -0700 (PDT) Received: from localhost ([::1]:37127 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dVymQ-0005dJ-7f for importer@patchew.org; Fri, 14 Jul 2017 07:29:06 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33602) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dVylX-0004ab-FK for qemu-devel@nongnu.org; Fri, 14 Jul 2017 07:28:12 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dVylU-0000KN-CP for qemu-devel@nongnu.org; Fri, 14 Jul 2017 07:28:11 -0400 Received: from m15-112.126.com ([220.181.15.112]:47052) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dVylT-0000II-NG for qemu-devel@nongnu.org; Fri, 14 Jul 2017 07:28:08 -0400 Received: from localhost.localdomain.localdomain (unknown [223.87.205.36]) by smtp2 (Coremail) with SMTP id DMmowAAnFgfCqmhZ4zRZJg--.4729S3; Fri, 14 Jul 2017 19:28:04 +0800 (CST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=126.com; s=s110527; h=From:Subject:Date:Message-Id; bh=TUsixZSH5WFs6DWq2X Vr6yhtVlgb/AWOdRgpY4HiWq8=; b=T3JN/X6cBLtet6iiqr+NBrM1Zyd9E6SnY9 UN6F3MUAyNk/6Rb7tt+yXE8Nvu7tFW/PGdp3thkCyarIOCTo7T+2Fnaj6jeNzrjZ KtsWPqCjBNPzUoE8xtmgAcqP1bYWgzefae4VF/aNs/hw69Oa5HXZPAkHiks/CacZ x54LAafbE= From: indiffPig@126.com To: pbonzini@redhat.com Date: Fri, 14 Jul 2017 07:27:57 -0400 Message-Id: <1500031677-2362-1-git-send-email-indiffPig@126.com> X-Mailer: git-send-email 1.8.3.1 describe: when dvs service stop, then net_vhost_user_watch->qemu_chr_fe_disconnect called . X-CM-TRANSID: DMmowAAnFgfCqmhZ4zRZJg--.4729S3 X-Coremail-Antispam: 1Uf129KBjvdXoW7Gw1fCw17Xw4DZFyxCr1xXwb_yoWxZFc_u3 WxZwsYqr1UtrW0v34jvrWkAw1xZw4fur109an8tw17tF48Kw12qr1qyryrGrn3Ga98GF90 g3s0kr4xZr4rGjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IUbT7KDUUUUU== X-Originating-IP: [223.87.205.36] X-CM-SenderInfo: plqgxwpislwqqrswhudrp/1tbi5AMVf1ag3R1njAAAsQ X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 220.181.15.112 Subject: [Qemu-devel] [PATCH] dvs services stop then qemu may be accesse null address case core 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: marcandre.lureau@redhat.com, qemu-devel@nongnu.org, "yin.zuowei" Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: "yin.zuowei" Signed-off-by: yin.zuowei --- chardev/char-fe.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/chardev/char-fe.c b/chardev/char-fe.c index 3f90f05..82f7e2b 100644 --- a/chardev/char-fe.c +++ b/chardev/char-fe.c @@ -353,7 +353,13 @@ guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondit= ion cond, =20 void qemu_chr_fe_disconnect(CharBackend *be) { - Chardev *chr =3D be->chr; + Chardev *chr =3D NULL; + + if (be) { + chr =3D be->chr; + } else { + return ; + } =20 if (chr && CHARDEV_GET_CLASS(chr)->chr_disconnect) { CHARDEV_GET_CLASS(chr)->chr_disconnect(chr); --=20 1.8.3.1