[Valgrind-users] valgrind problems

[Feng C. <fc...@pi...>]

Hi there,

I'm running valgrind to do memcheck on a program that uses OpenSSL, and
having some problems:

a) Before the program finished, it would crash and leave nothing traceable
via gdb:

	program terminated with signal 6, Aborted.
	Cannot access memory at address 0x40302000
	#0  0x4018392f in ?? ()

b) Lots of OpenSSL related reports which may or may not be real problems,
such as

==16963== Thread 18:
==16963== Use of uninitialised value of size 4
==16963==    at 0x40872B33: des_encrypt2 (in /lib/libcrypto.so.0.9.6b)
==16963==
==16963== Thread 18:
==16963== Use of uninitialised value of size 4
==16963==    at 0x408267DD: ssl3_get_record (in /lib/libssl.so.0.9.6b)
==16963==    by 0x40826FF3: ssl3_read_bytes (in /lib/libssl.so.0.9.6b)
==16963==    by 0x40827FAF: ssl3_get_message (in /lib/libssl.so.0.9.6b)
==16963==    by 0x40827A3C: ssl3_get_finished (in /lib/libssl.so.0.9.6b)
==16963==

c) To suppress the OpenSSL error reports - because I'm not going to fix it,
I added some rules in the /usr/local/lib/valgrind/default.supp file.
However, it seems not always working.  For example, when adding the
following to the /usr/local/lib/valgrind/default.supp file, the above
reports still keep coming up in the logs:

{
   /lib/libssl.so.0.9.6b
   Memcheck:Cond
   obj:/lib/libssl.so.0.9.6b
}

{
   /lib/libcrypto.so.0.9.6b
   Memcheck:Cond
   obj:/lib/libcrypto.so.0.9.6b
}

{
   des_encrypt2 (in /lib/libcrypto.so.0.9.6b)
   Memcheck:Cond
   fun:des_encrypt2
}

{
   des_encrypt2 again (in /lib/libcrypto.so.0.9.6b)
   Memcheck:Cond
   fun:des_encrypt2
   obj:/lib/libcrypto.so.0.9.6b
}

Can someone please help?

Thanks a lot!

Feng