Re: [Valgrind-users] valgrind with a bad exit

[Diego T. <dt...@co...>]

On Sat, Jan 03, 2004 at 02:45:58PM -0800, Jeremy Fitzhardinge wrote:

> Hm, this works for me here, so I think it's version-specific.  Could you
> run it again, with --num-callers=10?  Also, what's the full version of
> glibc?

Some version info:
Version of libc6 is from debian package 2.3.2.ds1-10, that provides glibc-2.3.2.ds1-10 (that is the current libc6 from debian unstable)

reran with --num-callers=10 shows:

==30929== For more details, rerun with: -v
==30929==
==30929== Invalid read of size 1
==30929==    at 0x4037A546: __GI__dl_close (dl-close.c:122)
==30929==    by 0x4037B3CA: do_dlclose (dl-libc.c:96)
==30929==    by 0x4000BF15: _dl_catch_error (in /lib/ld-2.3.2.so)
==30929==    by 0x4037B30D: dlerror_run (dl-libc.c:42)
==30929==    by 0x4037E96C: free_mem (nsswitch.c:763)
==30929==    by 0x4037E7F4: __GI___libc_freeres (set-freeres.c:49)
==30929==    by 0x4016F832: vgPlain___libc_freeres_wrapper (vg_intercept.c:172)
==30929==    by 0x4029E927: __GI_exit (exit.c:82)
==30929==    by 0x40288DAD: __libc_start_main (libc-start.c:245)
==30929==    by 0x80483F0: ??? (start.S:102)
==30929==  Address 0x1E7 is not stack'd, malloc'd or free'd
==30929==
==30929== Process terminating with default action of signal 11 (SIGSEGV): dumping core
==30929==  Address not mapped to object at address 0x1E7
==30929==    at 0x4037A546: __GI__dl_close (dl-close.c:122)
==30929==    by 0x4037B3CA: do_dlclose (dl-libc.c:96)
==30929==    by 0x4000BF15: _dl_catch_error (in /lib/ld-2.3.2.so)
==30929==    by 0x4037B30D: dlerror_run (dl-libc.c:42)
==30929==    by 0x4037E96C: free_mem (nsswitch.c:763)
==30929==    by 0x4037E7F4: __GI___libc_freeres (set-freeres.c:49)
==30929==    by 0x4016F832: vgPlain___libc_freeres_wrapper (vg_intercept.c:172)
==30929==    by 0x4029E927: __GI_exit (exit.c:82)
==30929==    by 0x40288DAD: __libc_start_main (libc-start.c:245)
==30929==    by 0x80483F0: ??? (start.S:102)
==30929==
==30929== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 2 from 1)
==30929== malloc/free: in use at exit: 1876 bytes in 9 blocks.
==30929== malloc/free: 44 allocs, 35 frees, 4071 bytes allocated.
==1690== For a detailed leak analysis,  rerun with: --leak-check=yes
==1690== For counts of detected errors, rerun with: -v
Segmentation fault

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Diego Torres - dtorres at anthalia dot org - Madrid / España