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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6915AC433F5 for ; Thu, 20 Jan 2022 02:10:22 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 068CD6B00D4; Wed, 19 Jan 2022 21:10:22 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id F32796B00D5; Wed, 19 Jan 2022 21:10:21 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D868A6B00D6; Wed, 19 Jan 2022 21:10:21 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0125.hostedemail.com [216.40.44.125]) by kanga.kvack.org (Postfix) with ESMTP id C9FDA6B00D4 for ; Wed, 19 Jan 2022 21:10:21 -0500 (EST) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 9CC7F95CAA for ; Thu, 20 Jan 2022 02:10:21 +0000 (UTC) X-FDA: 79049035842.11.A2B2541 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf17.hostedemail.com (Postfix) with ESMTP id 0460E4002D for ; Thu, 20 Jan 2022 02:10:20 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 4510861522; Thu, 20 Jan 2022 02:10:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3F972C004E1; Thu, 20 Jan 2022 02:10:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1642644619; bh=TXPg2izwNFFwk/Qtfdn6rY5yc7l771bViwUiOOGGtKc=; h=Date:From:To:Subject:In-Reply-To:From; b=ybiNBd3v9l/xSsBt4MK3M7sCM94QIbNezy8gEzZDuoq36jIJfpPRJyWj5jO0rwGQz 5CTODL74txiZak+LyW05Oj3mKCPb7MEmtatHwcKZhAgifhkgq2A9DktjnsDd+KC4+b ZWrekaA7tnymLUA+dUenY5fZzVir7nbZGpHEKQMg= Date: Wed, 19 Jan 2022 18:10:18 -0800 From: Andrew Morton To: akpm@linux-foundation.org, daniel.thompson@linaro.org, dvyukov@google.com, elver@google.com, linux-mm@kvack.org, masahiroy@kernel.org, mm-commits@vger.kernel.org, naresh.kamboju@linaro.org, paulmck@kernel.org, quic_qiancai@quicinc.com, rdunlap@infradead.org, sfr@canb.auug.org.au, torvalds@linux-foundation.org Subject: [patch 49/55] configs: introduce debug.config for CI-like setup Message-ID: <20220120021018.vKJjaK6LS%akpm@linux-foundation.org> In-Reply-To: <20220119180714.9e187ce100e4510de3cd9f7d@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 0460E4002D X-Stat-Signature: pxzginzih38ije4obsgsasdj9y5wqfdx Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=ybiNBd3v; spf=pass (imf17.hostedemail.com: domain of akpm@linux-foundation.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none X-HE-Tag: 1642644620-402226 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Qian Cai Subject: configs: introduce debug.config for CI-like setup Some general debugging features like kmemleak, KASAN, lockdep, UBSAN etc help fix many viruses like a microscope. On the other hand, those features are scatter around and mixed up with more situational debugging options making them difficult to consume properly. This cold help amplify the general debugging/testing efforts and help establish sensitive default values for those options across the broad. This could also help different distros to collaborate on maintaining debug-flavored kernels. The config is based on years' experiences running daily CI inside the largest enterprise Linux distro company to seek regressions on linux-next builds on different bare-metal and virtual platforms. It can be used for example, $ make ARCH=arm64 defconfig debug.config Since KASAN and KCSAN can't be enabled together, we will need to create a separate one for KCSAN later as well. Link: https://lkml.kernel.org/r/20211115134754.7334-1-quic_qiancai@quicinc.com Signed-off-by: Qian Cai Acked-by: Paul E. McKenney Cc: Marco Elver Cc: Dmitry Vyukov Cc: Daniel Thompson Cc: Masahiro Yamada Cc: Naresh Kamboju Cc: "Stephen Rothwell" Cc: Randy Dunlap Signed-off-by: Andrew Morton --- kernel/configs/debug.config | 105 ++++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) --- /dev/null +++ a/kernel/configs/debug.config @@ -0,0 +1,105 @@ +# The config is based on running daily CI for enterprise Linux distros to +# seek regressions on linux-next builds on different bare-metal and virtual +# platforms. It can be used for example, +# +# $ make ARCH=arm64 defconfig debug.config +# +# Keep alphabetically sorted inside each section. +# +# printk and dmesg options +# +CONFIG_DEBUG_BUGVERBOSE=y +CONFIG_DYNAMIC_DEBUG=y +CONFIG_PRINTK_CALLER=y +CONFIG_PRINTK_TIME=y +CONFIG_SYMBOLIC_ERRNAME=y +# +# Compile-time checks and compiler options +# +CONFIG_DEBUG_INFO=y +CONFIG_DEBUG_SECTION_MISMATCH=y +CONFIG_FRAME_WARN=2048 +CONFIG_SECTION_MISMATCH_WARN_ONLY=y +# +# Generic Kernel Debugging Instruments +# +# CONFIG_UBSAN_ALIGNMENT is not set +# CONFIG_UBSAN_DIV_ZERO is not set +# CONFIG_UBSAN_TRAP is not set +# CONFIG_WARN_ALL_UNSEEDED_RANDOM is not set +CONFIG_DEBUG_FS=y +CONFIG_DEBUG_FS_ALLOW_ALL=y +CONFIG_DEBUG_IRQFLAGS=y +CONFIG_UBSAN=y +CONFIG_UBSAN_BOOL=y +CONFIG_UBSAN_BOUNDS=y +CONFIG_UBSAN_ENUM=y +CONFIG_UBSAN_SHIFT=y +CONFIG_UBSAN_UNREACHABLE=y +# +# Memory Debugging +# +# CONFIG_DEBUG_PAGEALLOC is not set +# CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF is not set +# CONFIG_DEBUG_RODATA_TEST is not set +# CONFIG_DEBUG_WX is not set +# CONFIG_KFENCE is not set +# CONFIG_PAGE_POISONING is not set +# CONFIG_SLUB_STATS is not set +CONFIG_PAGE_EXTENSION=y +CONFIG_PAGE_OWNER=y +CONFIG_DEBUG_KMEMLEAK=y +CONFIG_DEBUG_KMEMLEAK_AUTO_SCAN=y +CONFIG_DEBUG_OBJECTS=y +CONFIG_DEBUG_OBJECTS_ENABLE_DEFAULT=1 +CONFIG_DEBUG_OBJECTS_FREE=y +CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER=y +CONFIG_DEBUG_OBJECTS_RCU_HEAD=y +CONFIG_DEBUG_OBJECTS_TIMERS=y +CONFIG_DEBUG_OBJECTS_WORK=y +CONFIG_DEBUG_PER_CPU_MAPS=y +CONFIG_DEBUG_STACK_USAGE=y +CONFIG_DEBUG_VIRTUAL=y +CONFIG_DEBUG_VM=y +CONFIG_DEBUG_VM_PGFLAGS=y +CONFIG_DEBUG_VM_RB=y +CONFIG_DEBUG_VM_VMACACHE=y +CONFIG_GENERIC_PTDUMP=y +CONFIG_KASAN=y +CONFIG_KASAN_GENERIC=y +CONFIG_KASAN_INLINE=y +CONFIG_KASAN_VMALLOC=y +CONFIG_PTDUMP_DEBUGFS=y +CONFIG_SCHED_STACK_END_CHECK=y +CONFIG_SLUB_DEBUG_ON=y +# +# Debug Oops, Lockups and Hangs +# +# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set +# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set +CONFIG_DEBUG_ATOMIC_SLEEP=y +CONFIG_DETECT_HUNG_TASK=y +CONFIG_PANIC_ON_OOPS=y +CONFIG_PANIC_TIMEOUT=0 +CONFIG_SOFTLOCKUP_DETECTOR=y +# +# Lock Debugging (spinlocks, mutexes, etc...) +# +# CONFIG_PROVE_RAW_LOCK_NESTING is not set +CONFIG_PROVE_LOCKING=y +# +# Debug kernel data structures +# +CONFIG_BUG_ON_DATA_CORRUPTION=y +# +# RCU Debugging +# +CONFIG_PROVE_RCU=y +CONFIG_PROVE_RCU_LIST=y +# +# Tracers +# +CONFIG_BRANCH_PROFILE_NONE=y +CONFIG_DYNAMIC_FTRACE=y +CONFIG_FTRACE=y +CONFIG_FUNCTION_TRACER=y _