From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934203AbZHEKzt (ORCPT ); Wed, 5 Aug 2009 06:55:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934059AbZHEKzt (ORCPT ); Wed, 5 Aug 2009 06:55:49 -0400 Received: from hera.kernel.org ([140.211.167.34]:57643 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934196AbZHEKzq (ORCPT ); Wed, 5 Aug 2009 06:55:46 -0400 Date: Wed, 5 Aug 2009 10:55:14 GMT From: tip-bot for Cyrill Gorcunov To: linux-tip-commits@vger.kernel.org Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com, gorcunov@openvz.org, tglx@linutronix.de, mingo@elte.hu Reply-To: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, gorcunov@openvz.org, tglx@linutronix.de, mingo@elte.hu In-Reply-To: <20090801075435.769301745@openvz.org> References: <20090801075435.769301745@openvz.org> Subject: [tip:x86/apic] x86, ioapic: Throw BUG instead of NULL dereference Message-ID: Git-Commit-ID: a7428cd2ef77734465e36bceb43290e37e2a97c6 X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0 (hera.kernel.org [127.0.0.1]); Wed, 05 Aug 2009 10:55:15 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: a7428cd2ef77734465e36bceb43290e37e2a97c6 Gitweb: http://git.kernel.org/tip/a7428cd2ef77734465e36bceb43290e37e2a97c6 Author: Cyrill Gorcunov AuthorDate: Sat, 1 Aug 2009 11:48:00 +0400 Committer: Ingo Molnar CommitDate: Wed, 5 Aug 2009 10:30:50 +0200 x86, ioapic: Throw BUG instead of NULL dereference Instead of plain NULL deref we better throw error message with a backtrace. Actually we need more gracious error handling here. Meanwhile leave it as is. Signed-off-by: Cyrill Gorcunov Cc: yinghai@kernel.org LKML-Reference: <20090801075435.769301745@openvz.org> Signed-off-by: Ingo Molnar --- arch/x86/kernel/apic/io_apic.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index ffd8fdf..2a145d3 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -503,6 +503,10 @@ static void add_pin_to_irq_node(struct irq_cfg *cfg, int node, int apic, int pin } entry = get_one_free_irq_2_pin(node); + if (!entry) { + printk(KERN_ERR "can not alloc irq_pin_list\n"); + BUG_ON(1); + } entry->apic = apic; entry->pin = pin;