From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59056) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aK6rn-0007be-57 for qemu-devel@nongnu.org; Fri, 15 Jan 2016 11:04:51 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aK6rh-0003H3-2P for qemu-devel@nongnu.org; Fri, 15 Jan 2016 11:04:47 -0500 Received: from mail-wm0-x234.google.com ([2a00:1450:400c:c09::234]:38542) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aK6rg-0003Gu-RS for qemu-devel@nongnu.org; Fri, 15 Jan 2016 11:04:40 -0500 Received: by mail-wm0-x234.google.com with SMTP id b14so31643395wmb.1 for ; Fri, 15 Jan 2016 08:04:40 -0800 (PST) Sender: Paolo Bonzini From: Paolo Bonzini Date: Fri, 15 Jan 2016 17:04:18 +0100 Message-Id: <1452873871-138914-4-git-send-email-pbonzini@redhat.com> In-Reply-To: <1452873871-138914-1-git-send-email-pbonzini@redhat.com> References: <1452873871-138914-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PULL 03/15] i386: avoid null pointer dereference List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: P J P From: P J P Hello, A null pointer dereference issue was reported by Mr Ling Liu, CC'd here. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null as it is not called from cpu_exec loop, which results in the said issue. Below is a proposed (tested)patch to fix this issue; Does it look okay? ===