Re: [Valgrind-users] Callgrind error

[Julian S. <js...@ac...>]

Does the program work under load if you use --tool=none?  What about
--tool=memcheck?  I remember someone reported a race to do with
signals on an SMP box a while back, and so far that bug has not been
fixed.  So I'd like to know if this is a callgrind-specific bug or not.

J

On Wednesday 20 September 2006 19:02, William MacBain wrote:
> I'm trying to profile a multithreaded appication using callgrind on a
> plain vanilla SMP linux.
> If I limit the stress it seems to work but under load I'm not getting
> any results.
> The following is the entire output.
>
> valgrind --tool=callgrind /bin/filter
> ==170== Callgrind, a call-graph generating cache profiler.
> ==170== Copyright (C) 2002-2006, and GNU GPL'd, by Josef Weidendorfer et
> al. ==170== Using LibVEX rev 1658, a library for dynamic binary
> translation. ==170== Copyright (C) 2004-2006, and GNU GPL'd, by OpenWorks
> LLP.
> ==170== Using valgrind-3.2.1, a dynamic binary instrumentation framework.
> ==170== Copyright (C) 2000-2006, and GNU GPL'd, by Julian Seward et al.
> ==170== For more details, rerun with: -v
> ==170==
> ==170== For interactive control, run 'callgrind_control -h'.
> ==173==
> (none)
> BB# 261918673
>
> Callgrind: threads.c:273 (vgCallgrind_post_signal): Assertion
> '*(vgCallgrind_current_fn_stack.top) == 0' failed.
> ==173==    at 0x38019BE2: report_and_quit (m_libcassert.c:136)
> ==173==    by 0xDEADBEEE: ???
> ==173==    by 0x6415655B: ???
> ==173==    by 0x64156583: ???
> ==173==    by 0x64156633: ???
> ==173==    by 0x6415655B: ???
> ==173==    by 0x38029A61: vgPlain_do_syscall (m_syscall.c:258)
> ==173==    by 0x64156583: ???
> ==173==    by 0x59: ???
> ==173==    by 0x64156633: ???
> ==173==    by 0x59: ???
>
> sched status:
>   running_tid=0
>
>
>   Note: see also the FAQ.txt in the source distribution.
>   It contains workarounds to several common problems.
>
>   If that doesn't help, please report this bug to: www.valgrind.org
>
>   In the bug report, send all the above text, the valgrind
>   version, and what Linux distro you are using.  Thanks.
>
>
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