Hi,
I have been trying to use valgrind with Fedora 15 and I find that I am not getting the complete backtrace information. Let me provide a simple example:
/* file test.c */
#include <stdio.h>
int main(void) { int i; fprintf(stderr, "i = %d\n", i); } /* main */
Compile with:
gcc -o -g test test.c
Then I run valgrind on Fedora 15, and here is what I get. (I also provide the output for Ubuntu 10.04 for comparison.) How can I get more complete backtrace information using Fedora?
(Not that I am not interested in debugging the above sample program, but for finding out why valgrind for me does not provide more complete backtrace information.)
Thanks a lot in advance!
Best wishes, Ranjan
Output of valgrind on Fedora 15:
$ valgrind ./test
==31745== Memcheck, a memory error detector ==31745== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al. ==31745== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info ==31745== Command: ./test ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x35: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x35: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x3630: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x3630: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x363136: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x363136: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x36313732: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x36313732: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x31373334: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x31373334: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x37333532: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x37333532: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692D177: vfprintf (in /lib/libc-2.14.so) ==31745== by 0x46930D7A: buffered_vfprintf (in /lib/libc-2.14.so) ==31745== by 0x469367AE: fprintf (in /lib/libc-2.14.so) ==31745== by 0x46903412: (below main) (in /lib/libc-2.14.so) ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692CCD1: vfprintf (in /lib/libc-2.14.so) ==31745== by 0x46930D7A: buffered_vfprintf (in /lib/libc-2.14.so) ==31745== by 0x469367AE: fprintf (in /lib/libc-2.14.so) ==31745== by 0x46903412: (below main) (in /lib/libc-2.14.so) ==31745== i = 1185353716 ==31745== ==31745== HEAP SUMMARY: ==31745== in use at exit: 0 bytes in 0 blocks ==31745== total heap usage: 0 allocs, 0 frees, 0 bytes allocated ==31745== ==31745== All heap blocks were freed -- no leaks are possible ==31745== ==31745== For counts of detected and suppressed errors, rerun with: -v ==31745== Use --track-origins=yes to see where uninitialised values come from ==31745== ERROR SUMMARY: 22 errors from 16 contexts (suppressed: 12 from 8)
Output of valgrind on Ubuntu 10.04:
==29914== Memcheck, a memory error detector ==29914== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al. ==29914== Using Valgrind-3.6.0.SVN-Debian and LibVEX; rerun with -h for copyright info ==29914== Command: ./test ==29914== ==29914== Use of uninitialised value of size 8 ==29914== at 0x4E71E4B: _itoa_word (_itoa.c:195) ==29914== by 0x4E73138: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== ==29914== Conditional jump or move depends on uninitialised value(s) ==29914== at 0x4E71E55: _itoa_word (_itoa.c:195) ==29914== by 0x4E73138: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== ==29914== Conditional jump or move depends on uninitialised value(s) ==29914== at 0x4E74FB1: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== ==29914== Conditional jump or move depends on uninitialised value(s) ==29914== at 0x4E73226: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== i = 0 ==29914== ==29914== HEAP SUMMARY: ==29914== in use at exit: 0 bytes in 0 blocks ==29914== total heap usage: 0 allocs, 0 frees, 0 bytes allocated ==29914== ==29914== All heap blocks were freed -- no leaks are possible ==29914== ==29914== For counts of detected and suppressed errors, rerun with: -v ==29914== Use --track-origins=yes to see where uninitialised values come from ==29914== ERROR SUMMARY: 4 errors from 4 contexts (suppressed: 4 from 4)
Are you using the same valgrind version on both systems? Use this line to obtain a more detailed output:
valgrind --leak-check=yes myprog arg1 arg2
2011/7/27 Ranjan Maitra maitra@iastate.edu
Hi,
I have been trying to use valgrind with Fedora 15 and I find that I am not getting the complete backtrace information. Let me provide a simple example:
/* file test.c */
#include <stdio.h>
int main(void) { int i; fprintf(stderr, "i = %d\n", i); } /* main */
Compile with:
gcc -o -g test test.c
Then I run valgrind on Fedora 15, and here is what I get. (I also provide the output for Ubuntu 10.04 for comparison.) How can I get more complete backtrace information using Fedora?
(Not that I am not interested in debugging the above sample program, but for finding out why valgrind for me does not provide more complete backtrace information.)
Thanks a lot in advance!
Best wishes, Ranjan
Output of valgrind on Fedora 15:
$ valgrind ./test
==31745== Memcheck, a memory error detector ==31745== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al. ==31745== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info ==31745== Command: ./test ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x35: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x35: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x3630: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x3630: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x363136: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x363136: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x36313732: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x36313732: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x31373334: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x31373334: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x37333532: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x37333532: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692D177: vfprintf (in /lib/libc-2.14.so) ==31745== by 0x46930D7A: buffered_vfprintf (in /lib/libc-2.14.so) ==31745== by 0x469367AE: fprintf (in /lib/libc-2.14.so) ==31745== by 0x46903412: (below main) (in /lib/libc-2.14.so) ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692CCD1: vfprintf (in /lib/libc-2.14.so) ==31745== by 0x46930D7A: buffered_vfprintf (in /lib/libc-2.14.so) ==31745== by 0x469367AE: fprintf (in /lib/libc-2.14.so) ==31745== by 0x46903412: (below main) (in /lib/libc-2.14.so) ==31745== i = 1185353716 ==31745== ==31745== HEAP SUMMARY: ==31745== in use at exit: 0 bytes in 0 blocks ==31745== total heap usage: 0 allocs, 0 frees, 0 bytes allocated ==31745== ==31745== All heap blocks were freed -- no leaks are possible ==31745== ==31745== For counts of detected and suppressed errors, rerun with: -v ==31745== Use --track-origins=yes to see where uninitialised values come from ==31745== ERROR SUMMARY: 22 errors from 16 contexts (suppressed: 12 from 8)
Output of valgrind on Ubuntu 10.04:
==29914== Memcheck, a memory error detector ==29914== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al. ==29914== Using Valgrind-3.6.0.SVN-Debian and LibVEX; rerun with -h for copyright info ==29914== Command: ./test ==29914== ==29914== Use of uninitialised value of size 8 ==29914== at 0x4E71E4B: _itoa_word (_itoa.c:195) ==29914== by 0x4E73138: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== ==29914== Conditional jump or move depends on uninitialised value(s) ==29914== at 0x4E71E55: _itoa_word (_itoa.c:195) ==29914== by 0x4E73138: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== ==29914== Conditional jump or move depends on uninitialised value(s) ==29914== at 0x4E74FB1: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== ==29914== Conditional jump or move depends on uninitialised value(s) ==29914== at 0x4E73226: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== i = 0 ==29914== ==29914== HEAP SUMMARY: ==29914== in use at exit: 0 bytes in 0 blocks ==29914== total heap usage: 0 allocs, 0 frees, 0 bytes allocated ==29914== ==29914== All heap blocks were freed -- no leaks are possible ==29914== ==29914== For counts of detected and suppressed errors, rerun with: -v ==29914== Use --track-origins=yes to see where uninitialised values come from ==29914== ERROR SUMMARY: 4 errors from 4 contexts (suppressed: 4 from 4)
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Here is a excelent compilation of the most used commands with Valgrind http://techtalkies.blogspot.com/2011/06/valgrind-cheat-sheet-notes.html
Regards
2011/7/27 Marcos Luis Ortiz Valmaseda marcosluis2186@googlemail.com
Are you using the same valgrind version on both systems? Use this line to obtain a more detailed output:
valgrind --leak-check=yes myprog arg1 arg2
2011/7/27 Ranjan Maitra maitra@iastate.edu
Hi,
I have been trying to use valgrind with Fedora 15 and I find that I am not getting the complete backtrace information. Let me provide a simple example:
/* file test.c */
#include <stdio.h>
int main(void) { int i; fprintf(stderr, "i = %d\n", i); } /* main */
Compile with:
gcc -o -g test test.c
Then I run valgrind on Fedora 15, and here is what I get. (I also provide the output for Ubuntu 10.04 for comparison.) How can I get more complete backtrace information using Fedora?
(Not that I am not interested in debugging the above sample program, but for finding out why valgrind for me does not provide more complete backtrace information.)
Thanks a lot in advance!
Best wishes, Ranjan
Output of valgrind on Fedora 15:
$ valgrind ./test
==31745== Memcheck, a memory error detector ==31745== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al. ==31745== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info ==31745== Command: ./test ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x35: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x35: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x3630: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x3630: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x363136: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x363136: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x36313732: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x36313732: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x31373334: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x31373334: ??? ==31745== ==31745== Use of uninitialised value of size 4 ==31745== at 0x4692BA88: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x37333532: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692BA91: _itoa_word (in /lib/libc-2.14.so) ==31745== by 0x37333532: ??? ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692D177: vfprintf (in /lib/libc-2.14.so) ==31745== by 0x46930D7A: buffered_vfprintf (in /lib/libc-2.14.so) ==31745== by 0x469367AE: fprintf (in /lib/libc-2.14.so) ==31745== by 0x46903412: (below main) (in /lib/libc-2.14.so) ==31745== ==31745== Conditional jump or move depends on uninitialised value(s) ==31745== at 0x4692CCD1: vfprintf (in /lib/libc-2.14.so) ==31745== by 0x46930D7A: buffered_vfprintf (in /lib/libc-2.14.so) ==31745== by 0x469367AE: fprintf (in /lib/libc-2.14.so) ==31745== by 0x46903412: (below main) (in /lib/libc-2.14.so) ==31745== i = 1185353716 ==31745== ==31745== HEAP SUMMARY: ==31745== in use at exit: 0 bytes in 0 blocks ==31745== total heap usage: 0 allocs, 0 frees, 0 bytes allocated ==31745== ==31745== All heap blocks were freed -- no leaks are possible ==31745== ==31745== For counts of detected and suppressed errors, rerun with: -v ==31745== Use --track-origins=yes to see where uninitialised values come from ==31745== ERROR SUMMARY: 22 errors from 16 contexts (suppressed: 12 from 8)
Output of valgrind on Ubuntu 10.04:
==29914== Memcheck, a memory error detector ==29914== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al. ==29914== Using Valgrind-3.6.0.SVN-Debian and LibVEX; rerun with -h for copyright info ==29914== Command: ./test ==29914== ==29914== Use of uninitialised value of size 8 ==29914== at 0x4E71E4B: _itoa_word (_itoa.c:195) ==29914== by 0x4E73138: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== ==29914== Conditional jump or move depends on uninitialised value(s) ==29914== at 0x4E71E55: _itoa_word (_itoa.c:195) ==29914== by 0x4E73138: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== ==29914== Conditional jump or move depends on uninitialised value(s) ==29914== at 0x4E74FB1: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== ==29914== Conditional jump or move depends on uninitialised value(s) ==29914== at 0x4E73226: vfprintf (vfprintf.c:1613) ==29914== by 0x4E778DF: buffered_vfprintf (vfprintf.c:2254) ==29914== by 0x4E725AD: vfprintf (vfprintf.c:1306) ==29914== by 0x4E7D497: fprintf (fprintf.c:33) ==29914== by 0x40058A: main (test.c:5) ==29914== i = 0 ==29914== ==29914== HEAP SUMMARY: ==29914== in use at exit: 0 bytes in 0 blocks ==29914== total heap usage: 0 allocs, 0 frees, 0 bytes allocated ==29914== ==29914== All heap blocks were freed -- no leaks are possible ==29914== ==29914== For counts of detected and suppressed errors, rerun with: -v ==29914== Use --track-origins=yes to see where uninitialised values come from ==29914== ERROR SUMMARY: 4 errors from 4 contexts (suppressed: 4 from 4)
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--
-- Marcos Luis Ortíz Valmaseda Software Engineer (UCI) Linux User # 418229 http://marcosluis2186.posterous.com https://fedoraproject.org/wiki/User:Marcosluis
On 07/28/2011 01:17 AM, Ranjan Maitra wrote:
I have been trying to use valgrind with Fedora 15 and I find that I am not getting the complete backtrace information. Let me provide a simple example:
Valgrind works fine for me:
==6073== Conditional jump or move depends on uninitialised value(s) ==6073== at 0x3CE8C497BB: vfprintf (in /lib64/libc-2.14.so) ==6073== by 0x3CE8C4B0C3: buffered_vfprintf (in /lib64/libc-2.14.so) ==6073== by 0x3CE8C467ED: vfprintf (in /lib64/libc-2.14.so) ==6073== by 0x3CE8C50B76: fprintf (in /lib64/libc-2.14.so) ==6073== by 0x40052A: main (test.c:5)
Compile with:
gcc -o -g test test.c
This won't generally run successfully - you're asking gcc to compile "test" and "test.c" and put the output in a file named "-g". Depending on what "test" is this will most likely fail in different (weird!) ways.
You probably want something like:
gcc -o test -g test.c
Is it possible you had an old version of "test" lying around and it lacks debug symbols?
Regards, Bryn.
-
Bryn M. Reeves -
Marcos Luis Ortiz Valmaseda -
Ranjan Maitra