From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758382Ab0EXSZo (ORCPT ); Mon, 24 May 2010 14:25:44 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:24383 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758185Ab0EXSYN (ORCPT ); Mon, 24 May 2010 14:24:13 -0400 X-IronPort-AV: E=Sophos;i="4.53,292,1272859200"; d="scan'208";a="98432032" From: Stefano Stabellini To: linux-kernel@vger.kernel.org Cc: xen-devel@lists.xensource.com, Don Dutile , Stefano Stabellini , Jeremy Fitzhardinge , Stefano Stabellini Subject: [PATCH 08/11] Fix possible NULL pointer dereference in print_IO_APIC Date: Mon, 24 May 2010 19:27:34 +0100 Message-Id: <1274725657-1149-8-git-send-email-stefano.stabellini@eu.citrix.com> X-Mailer: git-send-email 1.5.4.3 In-Reply-To: References: X-OriginalArrivalTime: 24 May 2010 18:24:12.0441 (UTC) FILETIME=[4F087890:01CAFB6E] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Make sure chip_data is not NULL before accessing it (the VIRQ_TIMER handler and virq handlers in general don't have any chip_data). Signed-off-by: Stefano Stabellini --- arch/x86/kernel/apic/io_apic.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index eb2789c..c64499c 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1732,6 +1732,8 @@ __apicdebuginit(void) print_IO_APIC(void) struct irq_pin_list *entry; cfg = desc->chip_data; + if (!cfg) + continue; entry = cfg->irq_2_pin; if (!entry) continue; -- 1.5.4.3