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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 2FDAEC11F68 for ; Fri, 2 Jul 2021 04:39:50 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BC207611F1 for ; Fri, 2 Jul 2021 04:39:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC207611F1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bugs.launchpad.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:34946 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lzAxw-0007z5-ON for qemu-devel@archiver.kernel.org; Fri, 02 Jul 2021 00:39:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49502) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lzAkY-0008DY-7C for qemu-devel@nongnu.org; Fri, 02 Jul 2021 00:25:58 -0400 Received: from indium.canonical.com ([91.189.90.7]:42862) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lzAkW-0002SR-JB for qemu-devel@nongnu.org; Fri, 02 Jul 2021 00:25:58 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.93 #5 (Debian)) id 1lzAkS-00053j-DS for ; Fri, 02 Jul 2021 04:25:52 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 1B3AF2E81EF for ; Fri, 2 Jul 2021 04:25:49 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Fri, 02 Jul 2021 04:17:26 -0000 From: Launchpad Bug Tracker <1856837@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=Expired; importance=Undecided; assignee=None; X-Launchpad-Bug-Tags: arm gcc9.2 segfault X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: fgodeh janitor pmaydell th-huth X-Launchpad-Bug-Reporter: Fabian Godehardt (fgodeh) X-Launchpad-Bug-Modifier: Launchpad Janitor (janitor) References: <157666594314.15384.3778802807711797985.malonedeb@wampee.canonical.com> Message-Id: <162519944676.31921.15422663333373285646.malone@loganberry.canonical.com> Subject: [Bug 1856837] Re: qemu 4.2.0 arm segmentation fault with gcc 9.2 X-Launchpad-Message-Rationale: Subscriber (QEMU) @qemu-devel-ml X-Launchpad-Message-For: qemu-devel-ml Precedence: bulk X-Generated-By: Launchpad (canonical.com); Revision="c7d3f30bfe7d7b488c7f9d3c8d7880184b1d065e"; Instance="production" X-Launchpad-Hash: adb2dfb3e54d7e0ac9b46c54c10d2e792d504e8d Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-Spam_score_int: -65 X-Spam_score: -6.6 X-Spam_bar: ------ X-Spam_report: (-6.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Bug 1856837 <1856837@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" [Expired for QEMU because there has been no activity for 60 days.] ** Changed in: qemu Status: Incomplete =3D> Expired -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1856837 Title: qemu 4.2.0 arm segmentation fault with gcc 9.2 Status in QEMU: Expired Bug description: As discussed with f4bug yesterday on IRC here comes the bug description. I'm building/configured qemu-4.2.0 on an x86_64 (gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516) with target-list "arm-softmmu,arm- linux-user" and debug enabled. I use the arm-linux-user variant, "qemu-arm". Then i'm trying to cross-compile (arm gcc) an old version of googles v8 (as i need this version of the lib for binary compatibility) which uses qemu during build. It worked with gcc 5.4.0 but not with 9.2.0. I also tried with 6.5.0, 7.4.0 and 8.3.0 but those are also causing the same segmentation fault. The executed command wich breaks qemu is: qemu-arm /tmp/build/out/arm.release/mksnapshot.arm --log-snapshot- positions --logfile /tmp/build/out/arm.release/obj.host/v8_snapshot/geni/snapshot.log --random-seed 314159265 /tmp/build/out/arm.release/obj.host/v8_snap The printed error message is: ARMv7=3D1 VFP3=3D1 VFP32DREGS=3D1 NEON=3D0 SUDIV=3D0 UNALIGNED_ACCESSES= =3D1 MOVW_MOVT_IMMEDIATE_LOADS=3D0 USE_EABI_HARDFLOAT=3D1 qemu: uncaught target signal 11 (Segmentation fault) - core dumped Calling qemu with gdb gives the following information: Thread 1 "qemu-arm" received signal SIGSEGV, Segmentation fault. 0x0000555555d63d11 in static_code_gen_buffer () and (gdb) bt #0 0x0000555555d63d11 in static_code_gen_buffer () #1 0x0000555555628d58 in cpu_tb_exec (itb=3D, cpu=3D0x55= 5557c33930) at = /tmp/build/qemu/accel/tcg/cpu-exec.c:172 #2 cpu_loop_exec_tb (tb_exit=3D, last_tb=3D, tb=3D, = cpu=3D0x555557c33930) at /tmp/build/qemu/accel/tcg/cpu-exec.c:618 #3 cpu_exec (cpu=3Dcpu@entry=3D0x555557c2b660) at /tmp/build/qemu/accel= /tcg/cpu-exec.c:731 #4 0x0000555555661578 in cpu_loop (env=3D0x555557c33930) at /tmp/build/= qemu/linux-user/arm/cpu_loop.c:219 #5 0x00005555555d6d76 in main (argc=3D, argv=3D, envp=3D) at /tmp/build/qemu/linux-user/main.c:865 Calling qemu-arm with debug switch "-d in_asm,int,op_opt" shows the log in the attached file. Thanks for any hints! Fabian To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1856837/+subscriptions