[Valgrind-users] Segmentation fault using cachegrind

[Juan C. M. S. <jua...@gm...>]

Hello everyone!,

I am getting a segmentation fault when I use the bellow command line:

valgrind -v --tool=cachegrind --trace-children=yes ./dijkstra_large
input.dat > output_large.dat

Without using valgrind, the program (dijkstra) works as I expected.

This is the whole message...

==========================================================
==2688== Memcheck, a memory error detector.
==2688== Copyright (C) 2002-2005, and GNU GPL'd, by Julian Seward et al.
==2688== Using LibVEX rev 1575, a library for dynamic binary translation.
==2688== Copyright (C) 2004-2005, and GNU GPL'd, by OpenWorks LLP.
==2688== Using valgrind-3.1.1, a dynamic binary instrumentation framework.
==2688== Copyright (C) 2000-2005, and GNU GPL'd, by Julian Seward et al.
==2688==
--2688-- Command line
--2688--    ./dijkstra_large
--2688--    input.dat
--2688-- Startup, with flags:
--2688--    -v
--2688-- Contents of /proc/version:
--2688--   Linux version 2.6.9-89.0.25.ELsmp
(moc...@bu...) (gcc version 3.4.6 20060404 (Red Hat
3.4.6-11)) #1 SMP Thu May 6 12:28:03 EDT 2010
--2688-- Arch and subarch: X86, x86-sse2
--2688-- Valgrind library directory: /usr/lib/valgrind
--2688-- Reading syms from
/home/jcmartin78/Downloads/MiBench/network/dijkstra/dijkstra_large
(0x8048000)
--2688--    object doesn't have a dynamic symbol table
--2688-- Reading syms from /usr/lib/valgrind/x86-linux/memcheck (0xB0000000)
--2688--    object doesn't have a dynamic symbol table
--2688-- Reading suppressions file: /usr/lib/valgrind/default.supp
==2688== Invalid write of size 4
==2688==    at 0x806F13F: _IO_vfscanf (in
/home/jcmartin78/Downloads/MiBench/network/dijkstra/dijkstra_large)
==2688==    by 0x8070CCA: vfscanf (in
/home/jcmartin78/Downloads/MiBench/network/dijkstra/dijkstra_large)
==2688==    by 0x8049385: fscanf (in
/home/jcmartin78/Downloads/MiBench/network/dijkstra/dijkstra_large)
==2688==    by 0x80487D2: main (dijkstra_large.c:161)
==2688==  Address 0xBEF2A794 is not stack'd, malloc'd or (recently) free'd
==2688==
==2688== Process terminating with default action of signal 11 (SIGSEGV)
==2688==  Access not within mapped region at address 0xBEF2A794
==2688==    at 0x806F13F: _IO_vfscanf (in
/home/jcmartin78/Downloads/MiBench/network/dijkstra/dijkstra_large)
==2688==    by 0x8070CCA: vfscanf (in
/home/jcmartin78/Downloads/MiBench/network/dijkstra/dijkstra_large)
==2688==    by 0x8049385: fscanf (in
/home/jcmartin78/Downloads/MiBench/network/dijkstra/dijkstra_large)
==2688==    by 0x80487D2: main (dijkstra_large.c:161)
==2688==
==2688== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
==2688==
==2688== 1 errors in context 1 of 1:
==2688== Invalid write of size 4
==2688==    at 0x806F13F: _IO_vfscanf (in
/home/jcmartin78/Downloads/MiBench/network/dijkstra/dijkstra_large)
==2688==    by 0x8070CCA: vfscanf (in
/home/jcmartin78/Downloads/MiBench/network/dijkstra/dijkstra_large)
==2688==    by 0x8049385: fscanf (in
/home/jcmartin78/Downloads/MiBench/network/dijkstra/dijkstra_large)
==2688==    by 0x80487D2: main (dijkstra_large.c:161)
==2688==  Address 0xBEF2A794 is not stack'd, malloc'd or (recently) free'd
==2688== IN SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
==2688==
==2688== malloc/free: in use at exit: 0 bytes in 0 blocks.
==2688== malloc/free: 0 allocs, 0 frees, 0 bytes allocated.
==2688==
==2688== All heap blocks were freed -- no leaks are possible.
--2688--  memcheck: sanity checks: 0 cheap, 1 expensive
--2688--  memcheck: auxmaps: 0 auxmap entries (0k, 0M) in use
--2688--  memcheck: auxmaps: 0 searches, 0 comparisons
--2688--  memcheck: secondaries: 7 issued (448k, 0M)
--2688--  memcheck: secondaries: 6 accessible and distinguished (384k, 0M)
--2688--     tt/tc: 968 tt lookups requiring 969 probes
--2688--     tt/tc: 968 fast-cache updates, 2 flushes
--2688-- translate: new        484 (8,776 -> 146,350; ratio 166:10) [0 scs]
--2688-- translate: dumped     0 (0 -> ??)
--2688-- translate: discarded  0 (0 -> ??)
--2688-- scheduler: 1,226 jumps (bb entries).
--2688-- scheduler: 0/492 major/minor sched events.
--2688--    sanity: 1 cheap, 1 expensive checks.
--2688--    exectx: 30,011 lists, 1 contexts (avg 0 per list)
--2688--    exectx: 1 searches, 0 full compares (0 per 1000)
--2688--    exectx: 0 cmp2, 0 cmp4, 0 cmpAll
==========================================================

-- 
Juan Carlos