[Valgrind-users] How use valgrind to check bind(DNS system) ？

[Aurora C. <ca...@kn...>]

Hello,

Bind: a dns system, program name is named, 
it is a deamon, and it will fork child process and create a few threads.

When I use valgrind to check bind, valgrind outputs a few messages and quit, 
but named is still running.

Please help me, thanks a lot.

The information is as follows:
# valgrind --version
valgrind-3.7.0
# valgrind --trace-children=yes bin/named/named -u bind -t /var/lib/named
==31878== Memcheck, a memory error detector
==31878== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==31878== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==31878== Command: bin/named/named -u bind -t /var/lib/named
==31878==
==31892==
==31892== HEAP SUMMARY:
==31892==     in use at exit: 0 bytes in 0 blocks
==31892==   total heap usage: 0 allocs, 0 frees, 0 bytes allocated
==31892==
==31892== All heap blocks were freed -- no leaks are possible
==31892==
==31892== For counts of detected and suppressed errors, rerun with: -v
==31892== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 2 from 2)
==31921==
==31921== HEAP SUMMARY:
==31921==     in use at exit: 0 bytes in 0 blocks
==31921==   total heap usage: 0 allocs, 0 frees, 0 bytes allocated
==31921==
==31921== All heap blocks were freed -- no leaks are possible
......
==31878== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==31878== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==31878== Command: /home/caizb/bind/bind/bind-9.9.2-P1/bin/named/.libs/lt-named 
-u bind -t /var/lib/named
==31878==
==31938== error 2 No such file or directory
==31938== mknod /tmp/vgdb-pipe-from-vgdb-to-31938-by-root-on-???
==31938== valgrind: fatal error: vgdb FIFOs cannot be created.
==31878==
==31878== HEAP SUMMARY:
==31878==     in use at exit: 323,328 bytes in 15 blocks
==31878==   total heap usage: 29 allocs, 14 frees, 325,785 bytes allocated
==31878==
==31878== LEAK SUMMARY:
==31878==    definitely lost: 0 bytes in 0 blocks
==31878==    indirectly lost: 0 bytes in 0 blocks
==31878==      possibly lost: 0 bytes in 0 blocks
==31878==    still reachable: 323,328 bytes in 15 blocks
==31878==         suppressed: 0 bytes in 0 blocks
==31878== Rerun with --leak-check=full to see details of leaked memory
==31878==
==31878== For counts of detected and suppressed errors, rerun with: -v
==31878== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
==31878== could not unlink /tmp/vgdb-pipe-from-vgdb-to-31878-by-root-on-???
==31878== could not unlink /tmp/vgdb-pipe-to-vgdb-from-31878-by-root-on-???
==31878== could not unlink /tmp/vgdb-pipe-shared-mem-vgdb-31878-by-root-on-???

# ps -ef | grep named
bind     10544     1 99 15:15 ?        02:26:12 /home/bind/bin/named/named 
-u bind -c etc/bind/named.conf -n 7 -u bind -t /var/lib/named