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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 595D6C4360C for ; Sun, 29 Sep 2019 17:37:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3546221A4C for ; Sun, 29 Sep 2019 17:37:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569778640; bh=WJKHsHBGnPsbTeLW4pe0ZnE9hwyn18ncCskMJuf8L3g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=yNLjzYNaj4S1AmI80kGUAFGra9W1z10ENzLgwJHlpn+Yp31DF4xlnqBoXLl2Biir/ r+hxceB7emgFiGzYrxzqHD3Llg/urTiG06pUGFgxJlqYfh/ynK22KxpLFYheB0uGBN WTZIi+KxL8u4ch0l8pBEoMrZpU6Ckp0dBNu/k9K0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730470AbfI2RhT (ORCPT ); Sun, 29 Sep 2019 13:37:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:50268 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730985AbfI2RhQ (ORCPT ); Sun, 29 Sep 2019 13:37:16 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A0CF521D71; Sun, 29 Sep 2019 17:37:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569778635; bh=WJKHsHBGnPsbTeLW4pe0ZnE9hwyn18ncCskMJuf8L3g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BxvORwErbdZyPLt/+uIWOP925RbOdiQYGw04sbc2/KDDMvjttFMqsrPSeah7Vukew riMHYl42qx45r7Xn4TIUBSFvMPi1b0XJ9KPQk47GogaE3/MHo7MS5pgZ9vTK8y2UfX l6qDT3ssPAN7vkdbXf5aAnM98HwgUttcGjYV4UXk= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: 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 AUTOSEL 4.4 9/9] kmemleak: increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE default to 16K Date: Sun, 29 Sep 2019 13:36:54 -0400 Message-Id: <20190929173655.10178-9-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190929173655.10178-1-sashal@kernel.org> References: <20190929173655.10178-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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