Just clarifying, the conflict happens between these two packages:

    kernel-rt-trace-debuginfo

    kernel-debug-debuginfo

Ok, can we please come up with a list of steps to reproduce this? It looks like you have to install the kernel-debuginfo stuff from a lookaside repo?

There seem to be two files that cause conflicts:

scripts/conmakehash
scripts/pnmtologo

Both are executables that are compiled when the BuildKernel macro is invoked. 

We Since the first comment from David, I've seen the conflict shift from the trace kernel to the vanilla kernel. I suspect we're hitting some corner-case in the debuginfo generation script. 

My solution so far is to go into the kernel-rt script, in the definition of the BuildKernel macro and add the following change:


diff --git a/MRG/kernel-rt.spec b/MRG/kernel-rt.spec
index de6b22a..8b7e88d 100644
--- a/MRG/kernel-rt.spec
+++ b/MRG/kernel-rt.spec
@@ -963,6 +963,11 @@ BuildKernel() {
     fi
     rm -f $RPM_BUILD_ROOT/lib/modules/$KernelVer/build/scripts/*.o
     rm -f $RPM_BUILD_ROOT/lib/modules/$KernelVer/build/scripts/*/*.o
+
+    # hack to remove .build-id conflict with RHEL kernel debuginfo
+    rm -f $RPM_BUILD_ROOT/lib/modules/$KernelVer/build/scripts/conmakehash
+    rm -f $RPM_BUILD_ROOT/lib/modules/$KernelVer/build/scripts/pnmtologo
+
     if [ -d arch/%{asmarch}/include ]; then
       cp -a --parents arch/%{asmarch}/include $RPM_BUILD_ROOT/lib/modules/$KernelVer/build/
     fi

Just build the kernel-rt-3.2.23-rt37.55.el6rt package and it seems to avoid the conflict issue.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-0566.html