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=-10.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 CA64AC4361B for ; Wed, 16 Dec 2020 07:20:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 94B0D2313B for ; Wed, 16 Dec 2020 07:20:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726059AbgLPHUt (ORCPT ); Wed, 16 Dec 2020 02:20:49 -0500 Received: from mga06.intel.com ([134.134.136.31]:32829 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725947AbgLPHUt (ORCPT ); Wed, 16 Dec 2020 02:20:49 -0500 IronPort-SDR: ZIMiSQelpvyvDcW8e6IFH20yG+HTTvoPTB+L9vp/bo0m8FcLUqQFnd+XLC+SrsehbkpYFXDkzz EjRBJu+UbVUQ== X-IronPort-AV: E=McAfee;i="6000,8403,9836"; a="236600814" X-IronPort-AV: E=Sophos;i="5.78,423,1599548400"; d="scan'208";a="236600814" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Dec 2020 23:20:08 -0800 IronPort-SDR: 4LbRgW0uLRbjBDXBgHNNl0XrbaxDOKRrZfPWeP+WFl4aDGdSpp3mBkNmOIZ9qywRWMBRRFhIk/ hCUH3s3nPc5w== X-IronPort-AV: E=Sophos;i="5.78,423,1599548400"; d="scan'208";a="338157464" Received: from shao2-debian.sh.intel.com (HELO [10.239.13.117]) ([10.239.13.117]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Dec 2020 23:20:07 -0800 Subject: Re: [kbuild-all] Re: drivers/mtd/tests/subpagetest.c:426:1: error: could not split insn To: Willy Tarreau , kernel test robot Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org References: <202012152318.bHtYzSWJ-lkp@intel.com> <20201215154046.GA5262@1wt.eu> From: Rong Chen Message-ID: <87896508-f281-8ab9-2de2-855d6c4be698@intel.com> Date: Wed, 16 Dec 2020 15:19:25 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20201215154046.GA5262@1wt.eu> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/15/20 11:40 PM, Willy Tarreau wrote: > Hi, > > On Tue, Dec 15, 2020 at 11:05:28PM +0800, kernel test robot wrote: >> Hi Willy, >> >> FYI, the error/warning still remains. >> >> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >> head: 148842c98a24e508aecb929718818fbf4c2a6ff3 >> commit: 3744741adab6d9195551ce30e65e726c7a408421 random32: add noise from network and scheduling activity > (...) > > not sure why I'm assigned this, but the root cause is a compiler bug: >> drivers/mtd/tests/subpagetest.c: In function 'mtd_subpagetest_init': >>>> drivers/mtd/tests/subpagetest.c:426:1: error: could not split insn >> 426 | } >> | ^ >> (insn:TI 453 2652 455 (set (reg/v:SI 3 a3 [orig:304 a ] [304]) >> (xor:SI (reg:SI 1 a1 [orig:717 net_rand_noise ] [717]) >> (const:SI (plus:SI (symbol_ref:SI ("*.LANCHOR0") [flags 0x182]) >> (const_int 12 [0xc]))))) "include/linux/prandom.h":66:4 152 {cskyv2_xorsi3} >> (expr_list:REG_DEAD (reg:SI 1 a1 [orig:717 net_rand_noise ] [717]) >> (nil))) >> during RTL pass: final >> drivers/mtd/tests/subpagetest.c:426:1: internal compiler error: in final_scan_insn_1, at final.c:3074 > ^^^^^^^^^^^^^^^^^^^^^^^ > >> 0x510da0 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) >> /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/rtl-error.c:108 >> 0x503d22 final_scan_insn_1 >> /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/final.c:3074 >> 0x73f8bf final_scan_insn(rtx_insn*, _IO_FILE*, int, int, int*) >> /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/final.c:3153 >> 0x73fbac final_1 >> /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/final.c:2021 >> 0x740618 rest_of_handle_final >> /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/final.c:4659 >> 0x740618 execute >> /tmp/build-crosstools-xh-9.3.0-2.34/gcc/gcc-9.3.0/gcc/final.c:4737 >> Please submit a full bug report, >> with preprocessed source if appropriate. >> Please include the complete backtrace with any bug report. >> See for instructions. > ^^^^^^^^^^^^^^^^^^^^^^^^^ > > That's totally out of my scope. I suspect it might have broken a bisect > operation. Hi Willy, Thanks for the feedback, I have created a issue in GCC Bugzilla: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98310 Best Regards, Rong Chen > > Regards, > Willy > _______________________________________________ > kbuild-all mailing list -- kbuild-all@lists.01.org > To unsubscribe send an email to kbuild-all-leave@lists.01.org