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 B6850C4360C for ; Sun, 29 Sep 2019 17:36:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 919A721BE5 for ; Sun, 29 Sep 2019 17:36:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569778617; bh=bbMIr55ugFF6OLrorH28jPhHOuwPNNTR6Xw+BKvPwp8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=0eJ+rs0/e9CWetPNjDxkI9SyZavlkMWdvx1z45RjOm6cboRW09QdV/qw+4XHLjvXY GkKw8JNWuqGnWKDV4rovQ8Zx+gUFKCbdBP50CI0Q/qKu9UIq61x6frrCLmUpqFXzqt ijltuea1mJJZ85T7sklY2NZWpRj9tTLzKc7vTZ/0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730187AbfI2Rg4 (ORCPT ); Sun, 29 Sep 2019 13:36:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:49702 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730941AbfI2Rgy (ORCPT ); Sun, 29 Sep 2019 13:36:54 -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 37A632196E; Sun, 29 Sep 2019 17:36:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569778614; bh=bbMIr55ugFF6OLrorH28jPhHOuwPNNTR6Xw+BKvPwp8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HsTiE/tsxa2QvvwLKGzbJsYeo69r+iFNIsg+k+ze+mTWHwFVbNH7CbPbog3EOz0WH PFCZgDDR/Kfd00R1UtBtGfe3JFmT5l3sC0yazfVvOUaeYfGlw5NGqLZPwRE2X4CpPu IpBychu31pJDTT44fzL7tNTddScc+gWTJ/29sHFM= 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 4.9 13/13] kmemleak: increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE default to 16K Date: Sun, 29 Sep 2019 13:36:23 -0400 Message-Id: <20190929173625.10003-13-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190929173625.10003-1-sashal@kernel.org> References: <20190929173625.10003-1-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 4f561860bf41e..bc5ff3a53d4a6 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -535,7 +535,7 @@ 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