Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753189Ab3HPHIU (ORCPT ); Fri, 16 Aug 2013 03:08:20 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:29462 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751965Ab3HPHIR (ORCPT ); Fri, 16 Aug 2013 03:08:17 -0400 X-IronPort-AV: E=Sophos;i="4.89,892,1367942400"; d="scan'208";a="8217639" From: Tang Chen To: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, lenb@kernel.org, rjw@sisk.pl, liwanp@linux.vnet.ibm.com, tj@kernel.org, akpm@linux-foundation.org Cc: x86@kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org Subject: [PATCH 5/6] acpi: Check if @id is NULL in acpi_table_parse() Date: Fri, 16 Aug 2013 15:06:48 +0800 Message-Id: <1376636809-10159-6-git-send-email-tangchen@cn.fujitsu.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1376636809-10159-1-git-send-email-tangchen@cn.fujitsu.com> References: <1376636809-10159-1-git-send-email-tangchen@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/08/16 15:06:32, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/08/16 15:06:38, Serialize complete at 2013/08/16 15:06:38 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 886 Lines: 29 strncmp() does not check if the params are NULL. In acpi_table_parse(), if @id is NULL, the kernel will panic. Signed-off-by: Tang Chen --- drivers/acpi/tables.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index d67a1fe..5a5263b 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -293,7 +293,7 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler) if (acpi_disabled) return -ENODEV; - if (!handler) + if (!id || !handler) return -EINVAL; if (strncmp(id, ACPI_SIG_MADT, 4) == 0) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/