If the devfsd.conf file contains a line with a CFUNCTION (or presumably MFUNCTION) event and the path is set to GLOBAL, then devfsd segfaults. As an example: REGISTER misc/psaux CFUNCTION GLOBAL symlink $devname mouse UNREGISTER misc/psaux CFUNCTION GLOBAL unlink mouse One or both of those lines (I've tested each one alone) fails. However, changing the action fixes the problem and changing "GLOBAL" to "/lib/libc.so.6" fixes the problem as well. I do not know if this is a defsd/kernel error or a redhat error, and I apologize for not trying to find out, but I assume you guys are better equipped to make that decision. BTW, I'm using devfsd-2.4.0-0.43.4 with a custom kernel from the rawhide sources of the same version.