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Reply-To: sedat.dilek@gmail.com
From:   Sedat Dilek <sedat.dilek@gmail.com>
Date:   Sat, 6 Feb 2021 13:54:09 +0100
Message-ID: <CA+icZUU6dY-jtZWOJC5Fi2BRGK4jZt_o1JnGH3nmGseUJH4uNg@mail.gmail.com>
Subject: Re: ERROR: INT DW_ATE_unsigned_1 Error emitting BTF type
To:     Yonghong Song <yhs@fb.com>
Cc:     Masahiro Yamada <masahiroy@kernel.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>,
        dwarves@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        bpf@vger.kernel.org, Jiri Olsa <jolsa@kernel.org>,
        Jan Engelhardt <jengelh@inai.de>,
        Domenico Andreoli <cavok@debian.org>,
        Matthias Schwarzott <zzam@gentoo.org>,
        Andrii Nakryiko <andriin@fb.com>,
        Mark Wieelard <mjw@redhat.com>,
        Paul Moore <paul@paul-moore.com>,
        Ondrej Mosnacek <omosnace@redhat.com>,
        =?UTF-8?Q?Daniel_P=2E_Berrang=C3=A9?= <berrange@redhat.com>,
        Tom Stellard <tstellar@redhat.com>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

Some post-mortem:

LLVM_DWARF_BIN="/opt/llvm-toolchain/bin/llvm-dwarfdump"

module="drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.ko"

Module has DW_ATE_unsigned_160 and DW_ATE_unsigned_1:

$LLVM_DWARF_BIN $module | grep DW_AT_name | grep DW_ATE_ | sort -u
               DW_AT_name      ("DW_ATE_signed_32")
               DW_AT_name      ("DW_ATE_signed_64")
               DW_AT_name      ("DW_ATE_unsigned_1")
               DW_AT_name      ("DW_ATE_unsigned_128")
               DW_AT_name      ("DW_ATE_unsigned_16")
               DW_AT_name      ("DW_ATE_unsigned_160")
               DW_AT_name      ("DW_ATE_unsigned_32")
               DW_AT_name      ("DW_ATE_unsigned_64")

vmlinux has only DW_ATE_unsigned_1:

$ $LLVM_DWARF_BIN vmlinux | grep DW_AT_name | grep DW_ATE_ | sort -u
               DW_AT_name      ("DW_ATE_signed_1")
               DW_AT_name      ("DW_ATE_signed_16")
               DW_AT_name      ("DW_ATE_signed_32")
               DW_AT_name      ("DW_ATE_signed_64")
               DW_AT_name      ("DW_ATE_signed_8")
               DW_AT_name      ("DW_ATE_unsigned_1")
               DW_AT_name      ("DW_ATE_unsigned_128")
               DW_AT_name      ("DW_ATE_unsigned_16")
               DW_AT_name      ("DW_ATE_unsigned_24")
               DW_AT_name      ("DW_ATE_unsigned_32")
               DW_AT_name      ("DW_ATE_unsigned_40")
               DW_AT_name      ("DW_ATE_unsigned_64")
               DW_AT_name      ("DW_ATE_unsigned_8")

- Sedat -