When trying to build latest rawhide kernels on x86_64, sparse throws an error and the build fails. It usually crashes while building ./arch/x86/ia32/ia32_binfmt.c: sparse: flow.c:805: rewrite_parent_branch: Assertion `changed' failed. There is a apparently an upstream patch to the latest sparse that fixes this. I built a sparse package with the 2007-10-22 nightly tarball and it seems to work. This is the only link to the upstream discussion on this that I could find: http://www.gossamer-threads.com/lists/linux/kernel/833258 Attaching patch below...
Created attachment 234401 [details] patch -- fix breakage due to rcu_read_lock lockdep annotation
sparse-0.4-2.fc7 has been pushed to the Fedora 7 stable repository. If problems still persist, please make note of it in this bug report.
sparse-0.4-2.fc8 has been pushed to the Fedora 8 stable repository. If problems still persist, please make note of it in this bug report.