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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 7EC6CECE58B for ; Sun, 6 Oct 2019 17:20:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 537A72080F for ; Sun, 6 Oct 2019 17:20:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570382415; bh=WJKHsHBGnPsbTeLW4pe0ZnE9hwyn18ncCskMJuf8L3g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Jj/yykHPskT/1le2N8rz766cRp+P32sBn/yeiRumzOm+w+r9qt2PP9wS27e1Yyaai ZzIDn+NAZQcmrLDvetmd1iYvfY2yERppgJLwSScWP93mh9ZvmjS/z2BfbU7yonKSXe gV8fQkE8MT3XK9noSBq8RlNH8vAtSE+Kj8CA5oSk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727139AbfJFRUJ (ORCPT ); Sun, 6 Oct 2019 13:20:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:45086 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727127AbfJFRUI (ORCPT ); Sun, 6 Oct 2019 13:20:08 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BDB0820862; Sun, 6 Oct 2019 17:20:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570382403; bh=WJKHsHBGnPsbTeLW4pe0ZnE9hwyn18ncCskMJuf8L3g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1alKuid5hRrvIOzodQ7SYhX3SbTMRzUuDC8+XaN9yv0P0hCBc0FFVRCN7VCaHyjag 9RWkMvU6bF1BHrDZrKgarkXMGeiSxVgPF8haveikC2lwKesaofsOYoiE6wVWuZ3wGq fG2F9jV/mHspTV0mL9VmApBnFPLQutIbOZSc6lGA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Nicolas Boichat , Dmitry Vyukov , Catalin Marinas , Masahiro Yamada , Kees Cook , Petr Mladek , Thomas Gleixner , Tetsuo Handa , Joe Lawrence , Uladzislau Rezki , Andy Shevchenko , Stephen Rothwell , Andrey Ryabinin , Andrew Morton , Linus Torvalds , Sasha Levin Subject: [PATCH 4.4 22/36] kmemleak: increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE default to 16K Date: Sun, 6 Oct 2019 19:19:04 +0200 Message-Id: <20191006171053.978216514@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191006171038.266461022@linuxfoundation.org> References: <20191006171038.266461022@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Nicolas Boichat [ Upstream commit b751c52bb587ae66f773b15204ef7a147467f4c7 ] The current default value (400) is too low on many systems (e.g. some ARM64 platform takes up 1000+ entries). syzbot uses 16000 as default value, and has proved to be enough on beefy configurations, so let's pick that value. This consumes more RAM on boot (each entry is 160 bytes, so in total ~2.5MB of RAM), but the memory would later be freed (early_log is __initdata). Link: http://lkml.kernel.org/r/20190730154027.101525-1-drinkcat@chromium.org Signed-off-by: Nicolas Boichat Suggested-by: Dmitry Vyukov Acked-by: Catalin Marinas Acked-by: Dmitry Vyukov Cc: Masahiro Yamada Cc: Kees Cook Cc: Petr Mladek Cc: Thomas Gleixner Cc: Tetsuo Handa Cc: Joe Lawrence Cc: Uladzislau Rezki Cc: Andy Shevchenko Cc: Stephen Rothwell Cc: Andrey Ryabinin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- lib/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index fd1205a3dbdbc..7b9d7328f189e 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -521,7 +521,7 @@ config DEBUG_KMEMLEAK_EARLY_LOG_SIZE int "Maximum kmemleak early log entries" depends on DEBUG_KMEMLEAK range 200 40000 - default 400 + default 16000 help Kmemleak must track all the memory allocations to avoid reporting false positives. Since memory may be allocated or -- 2.20.1