From nobody Fri Oct 10 18:18:31 2025 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8B22726B777; Fri, 13 Jun 2025 08:25:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749803111; cv=none; b=ifWr9KFq0hUPuMVqganfF8XbMGMhFWyq/qe2AKgiwqg4h5V49e2BzuZU6LZCIcyKl/RjxsvRpFgf3iX2toaKWuDi1rn/SqNn489P/2GUc49zRsZWclnunNo9BaDt9+D0KXn5k3o+lt8hJajKzowOipY0yOfjVHyQttwx4A2hCNM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749803111; c=relaxed/simple; bh=JxT4K3EBo5TwCltpCaGCLrHZgA8ZWdzzpq4QmIUpmGQ=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=qfvV8C/PaUpGasL0fADX2sPGHK6JCYKAbal/pPVhNAO6xuQyZ1//ZKWxcEwpsklXmuSJ85R1vMuiiz2L8wjCylxlT+H+CK89PkTKDbB76L8I+gMc45ZZ3QMMGDniIrawjUBlzZlLGEgx9BYSo8Mt/idlG+xTunJSgcCDOHeW3TE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=rCUu0Qa0; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=V+ciaNC+; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="rCUu0Qa0"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="V+ciaNC+" Date: Fri, 13 Jun 2025 08:25:06 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1749803107; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=305DmotqGozWz5+0mjGjOXk0cwN3ZChMVcwlcIPibc8=; b=rCUu0Qa01ZmamJaTVAR3mpFcVqW92vJbjo5ugL5tg2O2GLihCd8MoavQwvduOz2fTxp2zQ zc9qCS1oVuztvcpWgPmkbKhBEq5ypowClo7LF5uDBfI0XMLB6Wj3D98ulZJBwK8ZFGgdBH wmyRI+3AWJyoihSqk5CT2sQNQM1BmMCPmN1LjvZSmA8lwMjxvM1FsZGF5Qbylvi/y8V3cg o068RoAYA92/ZFVdwe7oPRHWhMEWJ5571G5g0Q3Albk51aUTvfvHOfML/IXoEkcYSgCzbU ForkNGONDMdZ1nF61RLUdgvIg5hkeLU7RhDgZxw8FJFdZ/k0CtBsWHROPDIyFw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1749803107; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=305DmotqGozWz5+0mjGjOXk0cwN3ZChMVcwlcIPibc8=; b=V+ciaNC+jaoJhRDF29biumCvIklfUMHfiFsKygql/+zeDcdFZPlm0CT6Xhn/BeR5ECvYlH 0Pit7GzEdUc/07Dg== From: "tip-bot2 for Ingo Molnar" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/kconfig] x86/kconfig/64: Enable popular kernel debugging options in the defconfig Cc: Ingo Molnar , Ard Biesheuvel , Arnd Bergmann , David Woodhouse , "H. Peter Anvin" , Ivan Shapovalov , jgross@suse.com, Linus Torvalds , Masahiro Yamada , Michal Marek , Peter Zijlstra , Vitaly Kuznetsov , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20250515132719.31868-11-mingo@kernel.org> References: <20250515132719.31868-11-mingo@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <174980310665.406.15231839566884139146.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the x86/kconfig branch of tip: Commit-ID: 53bc35f2d93704ccc012fcbc2039cd72f7942e94 Gitweb: https://git.kernel.org/tip/53bc35f2d93704ccc012fcbc2039cd72f= 7942e94 Author: Ingo Molnar AuthorDate: Thu, 15 May 2025 15:27:16 +02:00 Committer: Ingo Molnar CommitterDate: Fri, 13 Jun 2025 10:03:25 +02:00 x86/kconfig/64: Enable popular kernel debugging options in the defconfig Since the x86 defconfig aims to be a distro kernel work-alike with fewer drivers and a shorter build time, enable a handful of kernel debugging options that are typically enabled on major Linux distributions. The options enabled is a superset of the latest Ubuntu and Fedora kernel debugging configs, using Ubuntu's config-6.11.0-24-generic file, Fedora's kernel-x86_64-fedora.config and RHEL's kernel-x86_64-rhel.config from kernel-ark.git. Notable features enabled: - CONFIG_UBSAN=3Dy: Despite the runtime overhead, UBSAN is actively enabled in all 3 major Linux distros I checked, so we want it enabled in the defconfig as well - to better see the consequences. - CONFIG_DEBUG_SHIRQ=3Dy: Fedora/RHEL have this enabled, while Ubuntu has it disabled. - CONFIG_LIST_HARDENED=3Dy: Fedora/RHEL have CONFIG_DEBUG_LIST enabled, while Ubuntu has it disabled, so pick the lightweight LIST_HARDENED variant. - CONFIG_FUNCTION_PROFILER=3Dy: This is enabled on all distros I checked as well. DEBUGINFO is still disabled, despite enabled in all Linux distros, because the ~10x .o bloat is still just so painful on anything but the most powerful build boxes. Note that while the following features seemingly get removed from the defconfig : - CONFIG_BLK_DEV_INITRD=3Dy - CONFIG_KPROBES=3Dy - CONFIG_MAGIC_SYSRQ=3Dy they are actually still enabled in the actual .config, because they get selected by other options indirectly. Signed-off-by: Ingo Molnar Cc: Ard Biesheuvel Cc: Arnd Bergmann Cc: David Woodhouse Cc: H. Peter Anvin Cc: Ivan Shapovalov Cc: J=C3=BCrgen Gro=C3=9F Cc: Linus Torvalds Cc: Masahiro Yamada Cc: Michal Marek Cc: Peter Zijlstra Cc: Vitaly Kuznetsov Link: https://lore.kernel.org/r/20250515132719.31868-11-mingo@kernel.org --- arch/x86/configs/x86_64_defconfig | 46 ++++++++++++++++++++++++++++-- 1 file changed, 43 insertions(+), 3 deletions(-) diff --git a/arch/x86/configs/x86_64_defconfig b/arch/x86/configs/x86_64_de= fconfig index 0529678..4bd3122 100644 --- a/arch/x86/configs/x86_64_defconfig +++ b/arch/x86/configs/x86_64_defconfig @@ -31,7 +31,6 @@ CONFIG_CGROUP_PERF=3Dy CONFIG_CGROUP_BPF=3Dy CONFIG_CGROUP_MISC=3Dy CONFIG_CGROUP_DEBUG=3Dy -CONFIG_BLK_DEV_INITRD=3Dy CONFIG_KALLSYMS_ALL=3Dy CONFIG_PROFILING=3Dy CONFIG_KEXEC=3Dy @@ -68,7 +67,6 @@ CONFIG_KVM_INTEL=3Dy CONFIG_KVM_AMD=3Dy CONFIG_KVM_XEN=3Dy CONFIG_KVM_MAX_NR_VCPUS=3D4096 -CONFIG_KPROBES=3Dy CONFIG_JUMP_LABEL=3Dy CONFIG_MODULES=3Dy CONFIG_MODULE_UNLOAD=3Dy @@ -302,14 +300,56 @@ CONFIG_SECURITY=3Dy CONFIG_SECURITY_NETWORK=3Dy CONFIG_SECURITY_SELINUX=3Dy CONFIG_SECURITY_SELINUX_BOOTPARAM=3Dy +CONFIG_LIST_HARDENED=3Dy CONFIG_PRINTK_TIME=3Dy +CONFIG_BOOT_PRINTK_DELAY=3Dy +CONFIG_DYNAMIC_DEBUG=3Dy CONFIG_DEBUG_KERNEL=3Dy -CONFIG_MAGIC_SYSRQ=3Dy +CONFIG_STRIP_ASM_SYMS=3Dy +CONFIG_HEADERS_INSTALL=3Dy +CONFIG_DEBUG_SECTION_MISMATCH=3Dy +CONFIG_KGDB=3Dy +CONFIG_KGDB_TESTS=3Dy +CONFIG_KGDB_LOW_LEVEL_TRAP=3Dy +CONFIG_KGDB_KDB=3Dy +CONFIG_KDB_KEYBOARD=3Dy +CONFIG_UBSAN=3Dy +CONFIG_UBSAN_SHIFT=3Dy +CONFIG_PAGE_OWNER=3Dy +CONFIG_PAGE_POISONING=3Dy CONFIG_DEBUG_WX=3Dy +CONFIG_PER_VMA_LOCK_STATS=3Dy CONFIG_DEBUG_STACK_USAGE=3Dy +CONFIG_SCHED_STACK_END_CHECK=3Dy +CONFIG_KFENCE=3Dy +CONFIG_DEBUG_SHIRQ=3Dy +CONFIG_PANIC_ON_OOPS=3Dy +CONFIG_HARDLOCKUP_DETECTOR=3Dy +CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=3Dy +CONFIG_WQ_CPU_INTENSIVE_REPORT=3Dy CONFIG_SCHEDSTATS=3Dy +CONFIG_NMI_CHECK_CPU=3Dy +CONFIG_RCU_CPU_STALL_CPUTIME=3Dy +CONFIG_BOOTTIME_TRACING=3Dy +CONFIG_FUNCTION_GRAPH_RETVAL=3Dy +CONFIG_FPROBE=3Dy +CONFIG_FUNCTION_PROFILER=3Dy +CONFIG_STACK_TRACER=3Dy +CONFIG_SCHED_TRACER=3Dy +CONFIG_HWLAT_TRACER=3Dy +CONFIG_TIMERLAT_TRACER=3Dy +CONFIG_MMIOTRACE=3Dy +CONFIG_FTRACE_SYSCALLS=3Dy CONFIG_BLK_DEV_IO_TRACE=3Dy +CONFIG_USER_EVENTS=3Dy +CONFIG_HIST_TRIGGERS=3Dy +CONFIG_TRACE_EVENT_INJECT=3Dy +CONFIG_RV=3Dy +CONFIG_RV_MON_WWNR=3Dy CONFIG_PROVIDE_OHCI1394_DMA_INIT=3Dy CONFIG_EARLY_PRINTK_DBGP=3Dy +CONFIG_EARLY_PRINTK_USB_XDBC=3Dy CONFIG_DEBUG_BOOT_PARAMS=3Dy CONFIG_DEBUG_ENTRY=3Dy +CONFIG_FUNCTION_ERROR_INJECTION=3Dy +CONFIG_MEMTEST=3Dy