From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94B7AC4360C for ; Fri, 4 Oct 2019 04:23:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 64B1D215EA for ; Fri, 4 Oct 2019 04:23:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387756AbfJDEX6 (ORCPT ); Fri, 4 Oct 2019 00:23:58 -0400 Received: from foss.arm.com ([217.140.110.172]:34814 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387709AbfJDEX6 (ORCPT ); Fri, 4 Oct 2019 00:23:58 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id AB6CC15A1; Thu, 3 Oct 2019 21:23:57 -0700 (PDT) Received: from p8cg001049571a15.arm.com (unknown [10.163.1.5]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id D5AF33F739; Thu, 3 Oct 2019 21:23:54 -0700 (PDT) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org Cc: Anshuman Khandual , Catalin Marinas , Will Deacon , Mark Rutland , linux-kernel@vger.kernel.org Subject: [PATCH] arm64/mm: Poison initmem while freeing with free_reserved_area() Date: Fri, 4 Oct 2019 09:53:58 +0530 Message-Id: <1570163038-32067-1-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Platform implementation for free_initmem() should poison the memory while freeing it up. Hence pass across POISON_FREE_INITMEM while calling into free_reserved_area(). The same is being followed in the generic fallback for free_initmem() and some other platforms overriding it. Cc: Catalin Marinas Cc: Will Deacon Cc: Mark Rutland Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/arm64/mm/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 45c00a54909c..ea7d38011e83 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -571,7 +571,7 @@ void free_initmem(void) { free_reserved_area(lm_alias(__init_begin), lm_alias(__init_end), - 0, "unused kernel"); + POISON_FREE_INITMEM, "unused kernel"); /* * Unmap the __init region but leave the VM area in place. This * prevents the region from being reused for kernel modules, which -- 2.20.1