From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53688) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cfh81-0005KL-M7 for qemu-devel@nongnu.org; Mon, 20 Feb 2017 01:07:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cfh7x-0007qC-OT for qemu-devel@nongnu.org; Mon, 20 Feb 2017 01:07:17 -0500 Received: from mx1.redhat.com ([209.132.183.28]:45060) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cfh7x-0007py-Hk for qemu-devel@nongnu.org; Mon, 20 Feb 2017 01:07:13 -0500 References: <20170217082704.23270-1-skiver.cloud.yzy@gmail.com> From: Thomas Huth Message-ID: <5a03f6f2-f867-8dfe-28bb-6f481782f6af@redhat.com> Date: Mon, 20 Feb 2017 07:07:08 +0100 MIME-Version: 1.0 In-Reply-To: <20170217082704.23270-1-skiver.cloud.yzy@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 0/2] fix segfaults caused by accessing CPU in empty machine List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Ziyue Yang , qemu-devel@nongnu.org Cc: Ziyue Yang , "Dr . David Alan Gilbert" , Pavel Butsykin On 17.02.2017 09:27, Ziyue Yang wrote: > From: Ziyue Yang > > Many QEMU monitor commands, like "info lapic", "info tlb" and so on > use mon_get_cpu or related wrappers to access CPU info without checking > whether the CPU exists. > This patch series fix the "info lapic" case, and is the base of the incoming > patch series aiming to eliminate segfaults caused by other QEMU commands > trying to access CPU that doesn't exist. Hi, FYI, I've posted a patch for all of these monitor commands that crash without CPU already last month: https://lists.gnu.org/archive/html/qemu-devel/2017-01/msg02602.html Thomas