Oracle is not supporting Red Hat Linux 6.x with the asmLib files. It is supporting the Oracle version of Linux, however it is no longer supplying the asmlib disk management utilities as it did in the Red Hat Linux 5.x release. You really don't need the asmlib because Red Hat Linux is provides the disk/device management with udev.
I have just successfully implemented Red Hat Linux 6.3 using Oracle Grid Infrastructure 220.127.116.11 ASM and Oracle Real Application Cluster (RAC) release 18.104.22.168 and it working like a charm. At first I thought that I had to do a lot of things differently and thinking that it was time as we know it has changed (mayan calendar end) however we are just in a different time and Oracle 11gR2 (22.214.171.124) Grid Infrastructure and Red Hat Linux 6.3 are a great compliment.
Oracle continues to improve on its Grid Infrastructure ASM and Real Application Cluster ASM as Red Hat Linux continues to provide improved functionality and enterprise management.
P.S : If the permission/owner was changed and you is trying to find what disks is a member of ASM then run the command above as root user.
Keep in mind that the Grid Infrastructure software does not need to be installed to use kfod, since kfod is located as well on the staging area where you uncompressed the Grid Infrastructure software, as the following example:
Where: "/stage" is the directory where I uncompressed the source software for the Grid Infrastructure software.