c - Can I make valgrind ignore glibc libraries?

Question

Is it possible to tell valgrind to ignore some set of libraries? Specifically glibc libraries..

Actual Problem: I have some code that runs fine in normal execution. No leaks etc.

When I try to run it through valgrind, I get core dumps and program restarts/stops.

Core usually points to glibc functions (usually fseek, mutex etc). I understand that there might be some issue with incompatible glibc / valgrind version.

I tried various valgrind releases and glibc versions but no luck. Any suggestions?

Answer 1

This probably doesn't answer your question, but will provide you the specifics of how to suppress certain errors (which others have alluded to but have not described in detail):

First, run valgrind as follows:

 valgrind --gen-suppressions=all --log-file=valgrind.out ./a.out

Now the output file valgrind.out will contain some automatically-generated suppression blocks like the following:

{
   stupid sendmsg bug: http://sourceware.org/bugzilla/show_bug.cgi?id=14687
   Memcheck:Param
   sendmsg(mmsg[0].msg_hdr)
   fun:sendmmsg
   obj:/usr/lib/libresolv-2.17.so
   fun:__libc_res_nquery
   obj:/usr/lib/libresolv-2.17.so
   fun:__libc_res_nsearch
   fun:_nss_dns_gethostbyname4_r
   fun:gaih_inet
   fun:getaddrinfo
   fun:get_socket_fd
   fun:main
}

Where "stupid sendmsg bug" and the link are the name that I added to refer to this block. Now, save that block to sendmsg.supp and tell valgrind about that file on the next run:

valgrind --log-file=valgrind --suppressions=sendmsg.supp ./a.out

And valgrind will graciously ignore that stupid upstream bug.