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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B573FECAAA1 for ; Fri, 28 Oct 2022 13:29:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229877AbiJ1N3T (ORCPT ); Fri, 28 Oct 2022 09:29:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229752AbiJ1N3S (ORCPT ); Fri, 28 Oct 2022 09:29:18 -0400 Received: from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com [IPv6:2a00:1450:4864:20::32f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CAF9B792E6; Fri, 28 Oct 2022 06:29:17 -0700 (PDT) Received: by mail-wm1-x32f.google.com with SMTP id 14-20020a05600c228e00b003cf4eaef74eso3513438wmf.0; Fri, 28 Oct 2022 06:29:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :from:to:cc:subject:date:message-id:reply-to; bh=S0nD/LNlHlt38vxJmkfyENuvomL8INpY7GnsGTg4hbs=; b=lUWW3ewHAXClpPsmhaNOjolWAai2QjCka1CD/0NuqiD8EhR95uan3qiJqm9mIFt8E3 U19gtrt7AOd6u0vVKZeCO2Wwjxy3LXI4Wuk2k2BA39t8WBFMWvQASH7zReQiMObGffA9 Cx4sr1jAyjLQaw/RRXZTVmvn/lQ+wopc0RHkBDNwphGKO/zmG9eIIOcsdSbSb17bf4N1 PGv0AywyCJQnBqwtflT8E0/rxHaicbpTK3cvT0uW4TCyIHHOdiZ153PCoha7Wxfvl7HY 2SarsHg29d2lJ/GDaByXlyv6Dhhyck0hVz9nB37EwlJDn2UYp+tum7p+mKVfYvqfpNIK QUUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=S0nD/LNlHlt38vxJmkfyENuvomL8INpY7GnsGTg4hbs=; b=bfLlpYFieU+s+qlzgogkdKsmP06dj8vT1TWO5RKlfbVu2l4GfPbQn+ux5Mt2AxPAPu hLLk/fl1hVngCgxYNT0k+Ir+Il+6E541YVzCkGXJ5AMeM2hq3pMsvV9Bwso72peJTOd5 VTHIATImf28Fg6gWCWK1odf+LuYKfaqHzQBrrUdAMTElJXVxWvk+mI20N2GFdmA8rl4M Pb97g2tr7tUNuOl6Dnjt1dwyPBzzJucvu9gEiPmvuaUy9yvWvKAQJCGMOI7cOvDp1zC2 bgSfbNKOvgQGP6L1yl+PHehxLoBuu1NvpP61/vOt8BwRPz/Tk7vFShL+ZQQf2i6xAC+q Tg4g== X-Gm-Message-State: ACrzQf0Cuj36zKtgMcneP76tJjmNFC/CfMWZlp7yGX66OEVy/Q+1twVh gB+uA4uWSzpEZVWUbU7Ira10g524P0A= X-Google-Smtp-Source: AMsMyM7ZwvE8HivzpQpYDtG1+fKGyikrsM1ggL3aahlOvBZKHZt93W4MeV0UhI04A2IBmmpBgvsGww== X-Received: by 2002:a05:600c:6019:b0:3c6:e21e:4e9d with SMTP id az25-20020a05600c601900b003c6e21e4e9dmr9572645wmb.53.1666963756222; Fri, 28 Oct 2022 06:29:16 -0700 (PDT) Received: from debian (host-78-150-37-98.as13285.net. [78.150.37.98]) by smtp.gmail.com with ESMTPSA id 6-20020a05600c230600b003cf37c5ddc0sm4141504wmo.22.2022.10.28.06.29.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Oct 2022 06:29:15 -0700 (PDT) Date: Fri, 28 Oct 2022 14:29:14 +0100 From: "Sudip Mukherjee (Codethink)" To: Peter Zijlstra , Dave Hansen , Kees Cook Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Andy Lutomirski , linux-kernel@vger.kernel.org, linux-next@vger.kernel.org Subject: boot failure of linux-next due to 1248fb6a8201 ("x86/mm: Randomize per-cpu entry area") Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org Hi All, Our qemu boots were failing since next-20221024, and a git bisect of next-20221028 showed the bad commit as 1248fb6a8201 ("x86/mm: Randomize per-cpu entry area") After reverting the commit I could boot qemu again with next-20221028. This is my config: make defconfig make kvm_guest.config scripts/config -e KCOV -e KCOV_INSTRUMENT_ALL -e KCOV_ENABLE_COMPARISONS -e DEBUG_FS -e DEBUG_KMEMLEAK -e DEBUG_INFO -e KALLSYMS -e KALLSYMS_ALL -e NAMESPACES -e UTS_NS -e IPC_NS -e PID_NS -e NET_NS -e CGROUP_PIDS -e MEMCG -e USER_NS -e CONFIGFS_FS -e SECURITYFS -e KASAN -e KASAN_INLINE -e FAULT_INJECTION -e FAULT_INJECTION_DEBUG_FS -e FAULT_INJECTION_USERCOPY -e FAILSLAB -e FAIL_PAGE_ALLOC -e FAIL_MAKE_REQUEST -e FAIL_IO_TIMEOUT -e FAIL_FUTEX -e LOCKDEP -e PROVE_LOCKING -e DEBUG_ATOMIC_SLEEP -e PROVE_RCU -e DEBUG_VM -e REFCOUNT_FULL -e FORTIFY_SOURCE -e HARDENED_USERCOPY -e LOCKUP_DETECTOR -e SOFTLOCKUP_DETECTOR -e HARDLOCKUP_DETECTOR -e BOOTPARAM_HARDLOCKUP_PANIC -e DETECT_HUNG_TASK -e WQ_WATCHDOG -e USB_GADGET -e USB_RAW_GADGET -e TUN -e KCSAN -d RANDOMIZE_BASE -e MAC80211_HWSIM -e IEEE802154 -e MAC802154 -e IEEE802154_DRIVERS -e IEEE802154_HWSIM -e BT -e BT_HCIVHCI echo "CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=140" >> .config echo "CONFIG_RCU_CPU_STALL_TIMEOUT=100" >> .config I will be happy to test any patch or provide any extra log if needed. Though I am not sure how I will collect extra logs (if needed) as there was no output from qemu. -- Regards Sudip