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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 1A7F0C433F5 for ; Sat, 18 Sep 2021 01:34:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE76C6112E for ; Sat, 18 Sep 2021 01:34:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231905AbhIRBf7 (ORCPT ); Fri, 17 Sep 2021 21:35:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45108 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230393AbhIRBf7 (ORCPT ); Fri, 17 Sep 2021 21:35:59 -0400 Received: from mail-ed1-x530.google.com (mail-ed1-x530.google.com [IPv6:2a00:1450:4864:20::530]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 92135C061574 for ; Fri, 17 Sep 2021 18:34:36 -0700 (PDT) Received: by mail-ed1-x530.google.com with SMTP id eg28so13555007edb.1 for ; Fri, 17 Sep 2021 18:34:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:from:date:message-id:subject:to; bh=ixQFwDISudLOsDinycaJ9+lDV1YjNSdipvWTNkBmR8c=; b=D3DLxr83ghoJMK6JkdVafEU0E0hkIN0DcyqgAD2Q3/sSISe7Ed8zaaK6kurQUPWbI4 oMLODTpmJgVKx5t15YOaO9VdC9bNTZ+xh1K+2mhnjIGMTg4fhkljz4v/JRYXLo7unxE9 Opn/9fx4ARzlr3joLpmK60SvF3wkwO9mefpo3OHmC0DX9wCtI1OkzHwtv0g/hUU4fIJT YyaJHJVRJ1+76DJUY1K21h09QbTjmfLapj5+YMveHu6y/t0sg/YoF2BoaAXbdZO+w0ff yHyz962+ntfZqYZXKFBkF0SYj+Dpiq9EG8k6NExsIKP+74NplOx8/AEXL6uB14w+/LQ/ OWSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=ixQFwDISudLOsDinycaJ9+lDV1YjNSdipvWTNkBmR8c=; b=5g1fdPHRE5w3rg1gmuh0tCQfik6DG+iMHpWaf7GxB/sNqXVba07KVN2RdHfj5dKb1v JjiA9kaCInl4m+asOg36aqZOyzeaJp5kXmecMLYpEJAqeIjQqISNR0VfCJzo/aHIFcx+ ogfDuyTvuOryHDN7gY1HPNiHBArZmrRicn/PCFWVxWdOYHOGOK8mRSo/7Gy4rkCwBRtV uESsCDl7d2FyHVC4pkDM9wGjwb/OLPooqHArhVt92uJxpmv2jqSTsxNEhH/er4YHZVkR 6VYrLOtRRIzpxcDpjRm7GcL5SsL4GiYidw4jJ1PCI9YKpJHifown8FUOo0AfM/qVONOb ZLoQ== X-Gm-Message-State: AOAM533anKZZDkp2juSUNZ2eHIpv8x+Y/Li1I/x00caanZduHBhp/4Km jEOe2y9gFnQS6mYf7avJ5mnfaWbxEmcXv1LYnhZrSv/ArIg= X-Google-Smtp-Source: ABdhPJwTsV28VrxnWlQbYK7HR9WI+aokjYkrWUc+WLhDAPCAAn757EK1WFjFHf7TgJOsOZkTubl9cmiK0CYQ2c8Uf5o= X-Received: by 2002:a50:e004:: with SMTP id e4mr16211827edl.164.1631928874911; Fri, 17 Sep 2021 18:34:34 -0700 (PDT) MIME-Version: 1.0 From: Vincent Li Date: Fri, 17 Sep 2021 18:34:23 -0700 Message-ID: Subject: llvm-objdump bpf coredump To: bpf Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Hi, I am supposed to file a bug report in https://bugs.llvm.org/ but the site requires account login, while waiting for my account setup, and since this is related to BPF, I will try my luck here :) This is cilium environment, when I use llvm-objdump to disassemble the bpf_lxc.o like below, it core dumps #llvm-objdump -S -D /var/run/cilium/state/2799/bpf_lxc.o > /home/bpf_lxc-5.4.txt PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace. Stack dump: 0. Program arguments: llvm-objdump -S -D /var/run/cilium/state/2799/bpf_lxc.o #0 0x00000000006336bc llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/local/bin/llvm-objdump+0x6336bc) #1 0x00000000006318a4 llvm::sys::RunSignalHandlers() (/usr/local/bin/llvm-objdump+0x6318a4) #2 0x0000000000631efd SignalHandler(int) (/usr/local/bin/llvm-objdump+0x631efd) #3 0x00007f9f39a7fb20 __restore_rt (/lib64/libpthread.so.0+0x12b20) #4 0x0000000000492e8b llvm::BPFInstPrinter::printMemOperand(llvm::MCInst const*, int, llvm::raw_ostream&, char const*) (/usr/local/bin/llvm-objdump+0x492e8b) #5 0x00000000004946c0 llvm::BPFInstPrinter::printInst(llvm::MCInst const*, unsigned long, llvm::StringRef, llvm::MCSubtargetInfo const&, llvm::raw_ostream&) (/usr/local/bin/llvm-objdump+0x4946c0) #6 0x0000000000432351 (anonymous namespace)::BPFPrettyPrinter::printInst(llvm::MCInstPrinter&, llvm::MCInst const*, llvm::ArrayRef, llvm::object::SectionedAddress, llvm::formatted_raw_ostream&, llvm::StringRef, llvm::MCSubtargetInfo const&, (anonymous namespace)::SourcePrinter*, llvm::StringRef, std::vector >*, (anonymous namespace)::LiveVariablePrinter&) (/usr/local/bin/llvm-objdump+0x432351) #7 0x00000000004400b8 disassembleObject(llvm::Target const*, llvm::object::ObjectFile const*, llvm::MCContext&, llvm::MCDisassembler*, llvm::MCDisassembler*, llvm::MCInstrAnalysis const*, llvm::MCInstPrinter*, llvm::MCSubtargetInfo const*, llvm::MCSubtargetInfo const*, (anonymous namespace)::PrettyPrinter&, (anonymous namespace)::SourcePrinter&, bool) (/usr/local/bin/llvm-objdump+0x4400b8) #8 0x000000000044444e disassembleObject(llvm::object::ObjectFile const*, bool) (/usr/local/bin/llvm-objdump+0x44444e) #9 0x00000000004454e2 dumpObject(llvm::object::ObjectFile*, llvm::object::Archive const*, llvm::object::Archive::Child const*) (/usr/local/bin/llvm-objdump+0x4454e2) #10 0x0000000000409910 main (/usr/local/bin/llvm-objdump+0x409910) #11 0x00007f9f3854c493 __libc_start_main (/lib64/libc.so.6+0x23493) #12 0x000000000042384e _start (/usr/local/bin/llvm-objdump+0x42384e) Segmentation fault (core dumped) I compiled and installed llvm and clang 12.0.1 myself