Re: Wrong Perf Backtraces

On Wed, Mar 25, 2020 at 09:39:27PM +0100, Jiri Olsa wrote:
> On Thu, Mar 26, 2020 at 12:31:32AM +0430, ahmadkhorrami wrote:
> > Here you are:
> > perf version 5.4.7
> >                  dwarf: [ on  ]  # HAVE_DWARF_SUPPORT
> >     dwarf_getlocations: [ on  ]  # HAVE_DWARF_GETLOCATIONS_SUPPORT
> >                  glibc: [ on  ]  # HAVE_GLIBC_SUPPORT
> >                   gtk2: [ on  ]  # HAVE_GTK2_SUPPORT
> >          syscall_table: [ on  ]  # HAVE_SYSCALL_TABLE_SUPPORT
> >                 libbfd: [ OFF ]  # HAVE_LIBBFD_SUPPORT
> >                 libelf: [ on  ]  # HAVE_LIBELF_SUPPORT
> >                libnuma: [ OFF ]  # HAVE_LIBNUMA_SUPPORT
> > numa_num_possible_cpus: [ OFF ]  # HAVE_LIBNUMA_SUPPORT
> >                libperl: [ on  ]  # HAVE_LIBPERL_SUPPORT
> >              libpython: [ on  ]  # HAVE_LIBPYTHON_SUPPORT
> >               libslang: [ on  ]  # HAVE_SLANG_SUPPORT
> >              libcrypto: [ on  ]  # HAVE_LIBCRYPTO_SUPPORT
> >              libunwind: [ on  ]  # HAVE_LIBUNWIND_SUPPORT
> >     libdw-dwarf-unwind: [ on  ]  # HAVE_DWARF_SUPPORT
> >                   zlib: [ on  ]  # HAVE_ZLIB_SUPPORT
> >                   lzma: [ on  ]  # HAVE_LZMA_SUPPORT
> >              get_cpuid: [ on  ]  # HAVE_AUXTRACE_SUPPORT
> >                    bpf: [ on  ]  # HAVE_LIBBPF_SUPPORT
> >                    aio: [ on  ]  # HAVE_AIO_SUPPORT
> >                   zstd: [ on  ]  # HAVE_ZSTD_SUPPORT
> > and
> > 	linux-vdso.so.1 (0x00007ffe55fca000)
> > 	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
> > (0x00007f82758f9000)
> > 	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f82756f1000)
> > 	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f8275353000)
> > 	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f827514f000)
> > 	libelf.so.1 => /usr/lib/x86_64-linux-gnu/libelf.so.1 (0x00007f8274f35000)
> > 	libdw.so.1 => /usr/lib/x86_64-linux-gnu/libdw.so.1 (0x00007f8274ce9000)
> > 	libunwind-x86_64.so.8 => /usr/lib/x86_64-linux-gnu/libunwind-x86_64.so.8
> > (0x00007f8274aca000)
> > 	libunwind.so.8 => /usr/lib/x86_64-linux-gnu/libunwind.so.8
> 
> libunwind, ok
> 
> > (0x00007f82748af000)
> > 	liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x00007f8274689000)
> > 	libslang.so.2 => /lib/x86_64-linux-gnu/libslang.so.2 (0x00007f82741a7000)
> > 	libperl.so.5.26 => /usr/lib/x86_64-linux-gnu/libperl.so.5.26
> > (0x00007f8273daa000)
> > 	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f82739b9000)
> > 	libpython2.7.so.1.0 => /usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0
> > (0x00007f827343c000)
> > 	libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f827321f000)
> > 	libzstd.so.1 => /usr/lib/x86_64-linux-gnu/libzstd.so.1 (0x00007f8272fa4000)
> > 	/lib64/ld-linux-x86-64.so.2 (0x00007f8276427000)
> > 	libbz2.so.1.0 => /lib/x86_64-linux-gnu/libbz2.so.1.0 (0x00007f8272d94000)
> > 	libcrypt.so.1 => /lib/x86_64-linux-gnu/libcrypt.so.1 (0x00007f8272b5c000)
> > 	libutil.so.1 => /lib/x86_64-linux-gnu/libutil.so.1 (0x00007f8272959000)
> > 
> > Mr. Olsa said he needs the output of perf archive.
> 
> Mr Olsa did not actualy try to open/close pdf before as you described.. let me try and I'll let you know

yea, no luck.. so if you could generate some reasonable small perf.data that
shows the issue and send it over together with 'perf archive' data privately
to me and to whoever else ask for it, so we don't polute the list..

or if you could put it somewhere on the web/ftp.. that'd be best

thanks,
jirka