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Date: Wed, 1 May 2019 17:09:59 +0300
From: Thomas Backlund <tmb@...eia.org>
To: Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
CC: Song Liu <liu.song.a23@...il.com>,
Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...nel.org>
Subject: Re: perf build broken in 5.1-rc7
Den 01-05-2019 kl. 16:07, skrev Arnaldo Carvalho de Melo:
> Em Tue, Apr 30, 2019 at 04:31:14PM +0300, Thomas Backlund escreveu:
>> Den 30-04-2019 kl. 16:06, skrev Song Liu:
>>> On Tue, Apr 30, 2019 at 12:55 AM Thomas Backlund <tmb@...eia.org> wrote:
>>>> Den 30-04-2019 kl. 10:26, skrev Thomas Backlund:
>>>>> Building perf in 5.1-rc5/6/7 fails:
>>>>> Build start:
>>>>> make -s -C tools/perf NO_PERF_READ_VDSO32=1 NO_PERF_READ_VDSOX32=1
>>>>> WERROR=0 NO_LIBUNWIND=1 HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_STRLCPY=1
>>>>> NO_BIONIC=1 NO_JVMTI=1 prefix=/usr lib=lib64 all
>>>>> BUILD: Doing 'make -j32' parallel build
>>>>> HOSTCC fixdep.o
>>>>> HOSTLD fixdep-in.o
>>>>> LINK fixdep
>>>>> Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/vmx.h'
>>>>> differs from latest version at 'arch/x86/include/uapi/asm/vmx.h'
>>>>> diff -u tools/arch/x86/include/uapi/asm/vmx.h
>>>>> arch/x86/include/uapi/asm/vmx.h
>>>>>
>>>>> Auto-detecting system features:
>>>>> ... dwarf: [ on ]
>>>>> ... dwarf_getlocations: [ on ]
>>>>> ... glibc: [ on ]
>>>>> ... gtk2: [ on ]
>>>>> ... libaudit: [ on ]
>>>>> ... libbfd: [ on ]
>>>>> ... libelf: [ on ]
>>>>> ... libnuma: [ on ]
>>>>> ... numa_num_possible_cpus: [ on ]
>>>>> ... libperl: [ on ]
>>>>> ... libpython: [ on ]
>>>>> ... libslang: [ on ]
>>>>> ... libcrypto: [ on ]
>>>>> ... libunwind: [ on ]
>>>>> ... libdw-dwarf-unwind: [ on ]
>>>>> ... zlib: [ on ]
>>>>> ... lzma: [ on ]
>>>>> ... get_cpuid: [ on ]
>>>>> ... bpf: [ on ]
>>>>> ... libaio: [ on ]
>>>>> ... disassembler-four-args: [ OFF ]
>>>>>
>>>>> Makefile.config:473: No sys/sdt.h found, no SDT events are defined,
>>>>> please install systemtap-sdt-devel or systemtap-sdt-dev
>>>>> Makefile.config:853: No libbabeltrace found, disables 'perf data' CTF
>>>>> format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev
>>>>>
>>>>>
>>>>> And breaks with:
>>>>>
>>>>>
>>>>> CC ui/setup.o
>>>>> util/annotate.c: In function 'symbol__disassemble_bpf':
>>>>> util/annotate.c:1767:29: error: incompatible type for argument 1 of
>>>>> 'disassembler'
>>>>> disassemble = disassembler(bfdf);
>>>>> ^~~~
>>>>> In file included from util/annotate.c:1689:
>>>>> /usr/include/dis-asm.h:325:63: note: expected 'enum bfd_architecture'
>>>>> but argument is of type 'bfd *' {aka 'struct bfd *'}
>>>>> extern disassembler_ftype disassembler (enum bfd_architecture arc,
>>>>> ~~~~~~~~~~~~~~~~~~~~~~^~~
>>>>> util/annotate.c:1767:16: error: too few arguments to function
>>>>> 'disassembler'
>>>>> disassemble = disassembler(bfdf);
>>>>> ^~~~~~~~~~~~
>>>>> In file included from util/annotate.c:1689:
>>>>> /usr/include/dis-asm.h:325:27: note: declared here
>>>>> extern disassembler_ftype disassembler (enum bfd_architecture arc,
>>>>> ^~~~~~~~~~~~
>>>>> CC arch/x86/util/header.o
>>>>> CC arch/x86/util/tsc.o
>>>>> CC arch/x86/util/pmu.o
>>>>> mv: cannot stat 'util/.annotate.o.tmp': No such file or directory
>>>>> CC bench/futex-requeue.o
>>>>> CC arch/x86/util/kvm-stat.o
>>>>> make[4]: ***
>>>>> [/work/rpmbuild/BUILD/kernel-x86_64/linux-5.0/tools/build/Makefile.build:97:
>>>>> util/annotate.o] Error 1
>>>>> make[4]: *** Waiting for unfinished jobs....
>>>>> CC util/build-id.o
>>>>>
>>>>>
>>>>>
>>>> And I forgot...
>>>>
>>>> Reverting:
>>>> From 6987561c9e86eace45f2dbb0c564964a63f4150a Mon Sep 17 00:00:00 2001
>>>> From: Song Liu <songliubraving@...com>
>>>> Date: Mon, 11 Mar 2019 22:30:48 -0700
>>>> Subject: perf annotate: Enable annotation of BPF programs
>>>>
>>>> Makes it build again.
>>>>
>>>> --
>>>> Thomas
>>>>
>>> Hi Thomas,
>>>
>>> Which system are you running this test on? I would like to repro it in a VM.
>>>
>>> Thanks,
>>> Song
>>
>> Mageia Cauldron currently stabilizing to become Mageia 7 in ~1 month.
>>
>>
>> Basesystem is:
>>
>> binutils-2.32-5.mga7
>> (includes all fixes from upstream binutils-2_32-branch)
>>
>> gcc-8.3.1-0.20190419.2.mga7
>>
>> glibc-2.29-7.mga7
>> (includes all fixes from upstream glibc release/2.29/master branch up to
>> 2019-04-15 for now)
>>
>>
>> kernel-desktop-5.1.0-0.rc7.1.mga7
>> kernel-userspace-headers-5.1.0-0.rc7.1.mga7
> Ok, so the steps are:
>
> 1) the feature test, the small C program that we try to build is:
>
> [acme@...co perf]$ cat tools/build/feature/test-disassembler-four-args.c
> // SPDX-License-Identifier: GPL-2.0
> #include <bfd.h>
> #include <dis-asm.h>
>
> int main(void)
> {
> bfd *abfd = bfd_openr(NULL, NULL);
>
> disassembler(bfd_get_arch(abfd),
> bfd_big_endian(abfd),
> bfd_get_mach(abfd),
> abfd);
>
> return 0;
> }
> [acme@...co perf]$
>
> And here in my fedora29 system it ends up producing the following file,
> when built with:
>
> $ make O=/tmp/build/perf -C tools/perf install-bin
>
> [acme@...co perf]$ cat /tmp/build/perf/feature/test-disassembler-four-args.make.output
> [acme@...co perf]$
> [acme@...co perf]$ file /tmp/build/perf/feature/test-disassembler-four-args.bin
> /tmp/build/perf/feature/test-disassembler-four-args.bin: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.2.0, BuildID[sha1]=c9bd83db766a620c5cb6d756b0cd6991527641ff, not stripped, too many notes (256)
> [acme@...co perf]$ ldd /tmp/build/perf/feature/test-disassembler-four-args.bin
> linux-vdso.so.1 (0x00007ffebc5f9000)
> libz.so.1 => /lib64/libz.so.1 (0x00007fed2da04000)
> libdl.so.2 => /lib64/libdl.so.2 (0x00007fed2d9fe000)
> libc.so.6 => /lib64/libc.so.6 (0x00007fed2d838000)
> /lib64/ld-linux-x86-64.so.2 (0x00007fed2da3e000)
> [acme@...co perf]$
>
> Meaning it built properly, so in this sytem the disassembler() function
> has indeed four args, so we end up with:
>
> [acme@...co perf]$ grep disassembler /tmp/build/perf/FEATURE-DUMP
> feature-disassembler-four-args=1
> [acme@...co perf]$
>
> Can you check the output for
> /tmp/build/perf/feature/test-disassembler-four-args.make.output in your
> system? And also check what is the prototype for the disassembler()
> routine on mageia7?
I guess this is what fails the test:
cat /tmp/build/perf/feature/test-disassembler-four-args.make.output
/usr/bin/ld: /usr/lib64/libbfd.a(plugin.o): in function `try_load_plugin':
/home/iurt/rpmbuild/BUILD/binutils-2.32/objs/bfd/../../bfd/plugin.c:243:
undefined reference to `dlopen'
/usr/bin/ld:
/home/iurt/rpmbuild/BUILD/binutils-2.32/objs/bfd/../../bfd/plugin.c:271:
undefined reference to `dlsym'
/usr/bin/ld:
/home/iurt/rpmbuild/BUILD/binutils-2.32/objs/bfd/../../bfd/plugin.c:256:
undefined reference to `dlclose'
/usr/bin/ld:
/home/iurt/rpmbuild/BUILD/binutils-2.32/objs/bfd/../../bfd/plugin.c:246:
undefined reference to `dlerror'
as we allow dynamic linking and loading
And we use linker flags:
rpm --eval %ldflags
-Wl,--as-needed -Wl,--no-undefined -Wl,-z,relro -Wl,-O1 -Wl,--build-id
-Wl,--enable-new-dtags
So it reports:
disassembler-four-args: [ OFF ]
And falls back to one single command.
> Here I have:
>
> [acme@...co perf]$ rpm -q binutils
> binutils-2.31.1-25.fc29.x86_64
> [acme@...co perf]$
>
> Perhaps binutils 2.32 changed that prototype again and instead of
> falling back to using just one arg we need to use some other number of
> args, or even a different type for the N args it now maybe have?
>
> - Arnaldo
There is no change in 2.32
disassembler_ftype
disassembler (enum bfd_architecture a,
bfd_boolean big ATTRIBUTE_UNUSED,
unsigned long mach ATTRIBUTE_UNUSED,
bfd *abfd ATTRIBUTE_UNUSED)
Is there a way to force it to "detect" / use 4 args ?
--
Thomas
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