Sebastian,
This is the first we've heard of linux_proc_maps causing a segfault. It has worked fine across various kernels on Debian, Ubuntu, SuSE, CentOS, Fedora. There are some Linux profiles available here:
And some Linux samples linked to from here:
In particular, there is a DFRWS 2008 memory sample for Linux and you'll find the CentOS profile on the profile page. Its a bit difficult to remotely debug a segfault, but if you find out any more details about the issue, feel free to report them.
Thanks,
MHL