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=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 195EFC352A9 for ; Sun, 29 Sep 2019 17:36:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E566B21A4A for ; Sun, 29 Sep 2019 17:36:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569778588; bh=/PUV6/gLISDR5QzXmZ1W1d7c2RECLlOac0UTFTta2Hg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Xw260nHcCevv+nygcnNG1FTXIXZRGcmuZSTVJeZSazYgiFMGD6jUnSFyrrEEx03In x2jiDHunALAjVWqm7Omcw2FkCieOqamQiy/luMDwHQzveo5JDoDpVvTXpUOWFmFVrq +k95B091eU5eCvPpXXbp7TDKL1YQm1XUKI0eiCuE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730832AbfI2Rg1 (ORCPT ); Sun, 29 Sep 2019 13:36:27 -0400 Received: from mail.kernel.org ([198.145.29.99]:48870 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730790AbfI2RgX (ORCPT ); Sun, 29 Sep 2019 13:36:23 -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 3544E21906; Sun, 29 Sep 2019 17:36:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569778583; bh=/PUV6/gLISDR5QzXmZ1W1d7c2RECLlOac0UTFTta2Hg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Rdnw0VgCofl99Fr0qQUjn5j5f3Ca21LkzIdoNED2xwH2UYoJBzoXPfkmQfSsANgfE KCWdGa+Wt3m5ynO262O3pd3JeQvSScCa5eA0P2wD6KN3zi/7BooRxDrnRtXbI5gh/v VOUfYLp3nv4RrMcuT0zGQPgUIQpoBwilBBZkohX0= 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 4.14 23/23] kmemleak: increase DEBUG_KMEMLEAK_EARLY_LOG_SIZE default to 16K Date: Sun, 29 Sep 2019 13:35:33 -0400 Message-Id: <20190929173535.9744-23-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190929173535.9744-1-sashal@kernel.org> References: <20190929173535.9744-1-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 131d5871f8c98..e1df563cdfe7e 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -570,7 +570,7 @@ 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