Possible regression in Karmic: "valgrind echo foo" has problems

Wed Sep 2 17:11:29 UTC 2009

On Mon, 31 Aug 2009 05:17:43 +0300, Mike Pontillo <pontillo at gmail.com>  
wrote:

> Hi all,
>
>    I am trying to triage some strange segfaults on my Karmic system. It
> seems like I am seeing intermittent crashes in seemingly random
> programs.
>
>    Last night I found a reproducible crash. After installing the 'samba'
> package and running 'net usershare list', it *always* crashes. I tried
> debugging in gdb a few times, but the backtrace wasn't consistent, and I
> couldn't explain the crashes. It looked like something was wrong at a
> lower layer. (maybe libc, the, kernel, gcc etc.)
>
>    Then I installed the "valgrind" and "libc-dbg" packages and did a  
> basic test:
>
> $ valgrind echo foo
> ==13186== Memcheck, a memory error detector.
> ==13186== Copyright (C) 2002-2008, and GNU GPL'd, by Julian Seward et al.
> ==13186== Using LibVEX rev 1884, a library for dynamic binary  
> translation.
> ==13186== Copyright (C) 2004-2008, and GNU GPL'd, by OpenWorks LLP.
> ==13186== Using valgrind-3.4.1-Debian, a dynamic binary instrumentation  
> framework.
> ==13186== Copyright (C) 2000-2008, and GNU GPL'd, by Julian Seward et al.
> ==13186== For more details, rerun with: -v
> ==13186==
> ==13186== Conditional jump or move depends on uninitialised value(s)
> ==13186==    at 0x40160F1: strlen (strlen.S:110)
> ==13186==    by 0x4007C74: _dl_init_paths (dl-load.c:776)
> ==13186==    by 0x4002A22: dl_main (rtld.c:1383)
> ==13186==    by 0x4013DED: _dl_sysdep_start (dl-sysdep.c:243)
> ==13186==    by 0x4000C6C: _dl_start (rtld.c:328)
> ==13186==    by 0x4000856: (within /lib/ld-2.10.1.so)
> ==13186==
> ==13186== Conditional jump or move depends on uninitialised value(s)
> ==13186==    at 0x40160FC: strlen (strlen.S:115)
> ==13186==    by 0x4007C74: _dl_init_paths (dl-load.c:776)
> ==13186==    by 0x4002A22: dl_main (rtld.c:1383)
> ==13186==    by 0x4013DED: _dl_sysdep_start (dl-sysdep.c:243)
> ==13186==    by 0x4000C6C: _dl_start (rtld.c:328)
> ==13186==    by 0x4000856: (within /lib/ld-2.10.1.so)
> ==13186==
> ==13186== Conditional jump or move depends on uninitialised value(s)
> ==13186==    at 0x400AEC6: _dl_relocate_object (do-rel.h:104)
> ==13186==    by 0x4003200: dl_main (rtld.c:2224)
> ==13186==    by 0x4013DED: _dl_sysdep_start (dl-sysdep.c:243)
> ==13186==    by 0x4000C6C: _dl_start (rtld.c:328)
> ==13186==    by 0x4000856: (within /lib/ld-2.10.1.so)
> ==13186==
> ==13186== Conditional jump or move depends on uninitialised value(s)
> ==13186==    at 0x400ABA3: _dl_relocate_object (do-rel.h:117)
> ==13186==    by 0x4003200: dl_main (rtld.c:2224)
> ==13186==    by 0x4013DED: _dl_sysdep_start (dl-sysdep.c:243)
> ==13186==    by 0x4000C6C: _dl_start (rtld.c:328)
> ==13186==    by 0x4000856: (within /lib/ld-2.10.1.so)
> ==13186==
> ==13186== Conditional jump or move depends on uninitialised value(s)
> ==13186==    at 0x400AF39: _dl_relocate_object (do-rel.h:127)
> ==13186==    by 0x4003200: dl_main (rtld.c:2224)
> ==13186==    by 0x4013DED: _dl_sysdep_start (dl-sysdep.c:243)
> ==13186==    by 0x4000C6C: _dl_start (rtld.c:328)
> ==13186==    by 0x4000856: (within /lib/ld-2.10.1.so)
> ==13186==
> ==13186== Conditional jump or move depends on uninitialised value(s)
> ==13186==    at 0x400A27E: _dl_relocate_object (do-rel.h:65)
> ==13186==    by 0x400312E: dl_main (rtld.c:2287)
> ==13186==    by 0x4013DED: _dl_sysdep_start (dl-sysdep.c:243)
> ==13186==    by 0x4000C6C: _dl_start (rtld.c:328)
> ==13186==    by 0x4000856: (within /lib/ld-2.10.1.so)
> ==13186==
> ==13186== Conditional jump or move depends on uninitialised value(s)
> ==13186==    at 0x400A286: _dl_relocate_object (do-rel.h:68)
> ==13186==    by 0x400312E: dl_main (rtld.c:2287)
> ==13186==    by 0x4013DED: _dl_sysdep_start (dl-sysdep.c:243)
> ==13186==    by 0x4000C6C: _dl_start (rtld.c:328)
> ==13186==    by 0x4000856: (within /lib/ld-2.10.1.so)
> ==13186==
> ==13186== Conditional jump or move depends on uninitialised value(s)
> ==13186==    at 0x400ABA3: _dl_relocate_object (do-rel.h:117)
> ==13186==    by 0x400312E: dl_main (rtld.c:2287)
> ==13186==    by 0x4013DED: _dl_sysdep_start (dl-sysdep.c:243)
> ==13186==    by 0x4000C6C: _dl_start (rtld.c:328)
> ==13186==    by 0x4000856: (within /lib/ld-2.10.1.so)
> foo
> ==13186==
> ==13186== ERROR SUMMARY: 13 errors from 8 contexts (suppressed: 0 from 0)
> ==13186== malloc/free: in use at exit: 0 bytes in 0 blocks.
> ==13186== malloc/free: 1,387 allocs, 1,387 frees, 64,390 bytes allocated.
> ==13186== For counts of detected errors, rerun with: -v
> ==13186== Use --track-origins=yes to see where uninitialised values come  
> from
> ==13186== All heap blocks were freed -- no leaks are possible.
>
>    I am seeing this on two separate systems running Karmic.
>
>    On a different (Jaunty) system, the same output is as follows:
>
> $ valgrind echo foo
> ==13258== Memcheck, a memory error detector.
> ==13258== Copyright (C) 2002-2008, and GNU GPL'd, by Julian Seward et al.
> ==13258== Using LibVEX rev 1884, a library for dynamic binary  
> translation.
> ==13258== Copyright (C) 2004-2008, and GNU GPL'd, by OpenWorks LLP.
> ==13258== Using valgrind-3.4.1-Debian, a dynamic binary instrumentation  
> framework.
> ==13258== Copyright (C) 2000-2008, and GNU GPL'd, by Julian Seward et al.
> ==13258== For more details, rerun with: -v
> ==13258==
> foo
> ==13258==
> ==13258== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 11 from 1)
> ==13258== malloc/free: in use at exit: 0 bytes in 0 blocks.
> ==13258== malloc/free: 1,387 allocs, 1,387 frees, 64,390 bytes allocated.
> ==13258== For counts of detected errors, rerun with: -v
> ==13258== All heap blocks were freed -- no leaks are possible.
>
>    Can anyone else recreate this? Any thoughts about what to look at  
> next?

Happens to me as well. I'm not sure what's the problem with the binary  
package, but rebuilding it seems to help. This is what I get with the  
rebuilt valgrind_3.4.1-1ubuntu1_i386.deb:

$ valgrind echo foo
==25041== Memcheck, a memory error detector.
==25041== Copyright (C) 2002-2008, and GNU GPL'd, by Julian Seward et al.
==25041== Using LibVEX rev 1884, a library for dynamic binary translation.
==25041== Copyright (C) 2004-2008, and GNU GPL'd, by OpenWorks LLP.
==25041== Using valgrind-3.4.1-Debian, a dynamic binary instrumentation  
framework.
==25041== Copyright (C) 2000-2008, and GNU GPL'd, by Julian Seward et al.
==25041== For more details, rerun with: -v
==25041==
foo
==25041==
==25041== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 13 from 1)
==25041== malloc/free: in use at exit: 0 bytes in 0 blocks.
==25041== malloc/free: 1,387 allocs, 1,387 frees, 64,390 bytes allocated.
==25041== For counts of detected errors, rerun with: -v
==25041== All heap blocks were freed -- no leaks are possible.

BR,
Jarkko

>
> Regards,
> Mike
>
>