Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753660Ab0BHVK4 (ORCPT ); Mon, 8 Feb 2010 16:10:56 -0500 Received: from mail-ew0-f228.google.com ([209.85.219.228]:62685 "EHLO mail-ew0-f228.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752537Ab0BHVKw (ORCPT ); Mon, 8 Feb 2010 16:10:52 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; b=qB1LAdtkjfXOdb8552cOn7WrIWE+IAF/qHShQTcj5u20CcGlrUwkMDBlBrsRnN6yIU dY50g+crzTuLQ3EE6PQBizap/7hS67NXP/4cnhBnJh3Eaapnya+XlmpaSPdgJNHrqUiL Tq9mp5F3e15N8WkCzUIdwwm06L/s/HTDq1s3Q= Message-ID: <4B707F6E.2090108@gmail.com> Date: Mon, 08 Feb 2010 22:17:34 +0100 From: Roel Kluin User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.7) Gecko/20100120 Fedora/3.0.1-1.fc12 Thunderbird/3.0.1 MIME-Version: 1.0 To: liqin.chen@sunplusct.com, arnd@arndb.de, LKML Subject: [PATCH] score: Fix dereference of NULL pointer in local_flush_tlb_page() Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 854 Lines: 22 Don't dereference vma if it's NULL. Signed-off-by: Roel Kluin --- diff --git a/arch/score/mm/tlb-score.c b/arch/score/mm/tlb-score.c index 4fa5aa5..6fdb100 100644 --- a/arch/score/mm/tlb-score.c +++ b/arch/score/mm/tlb-score.c @@ -158,7 +158,7 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end) void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page) { - if (!vma || vma->vm_mm->context != 0) { + if (vma && vma->vm_mm->context != 0) { unsigned long flags; int oldpid, newpid, idx; unsigned long vma_ASID = vma->vm_mm->context; -- 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/