http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57316
--- Comment #1 from Kostya Serebryany <kcc at gcc dot gnu.org> --- Feel free to patch this in 4.8 branch directly. As for the trunk, please send the patches to the upstream (LLVM) repo first. Sorry for the breakages, but we are unable to monitor build failures on old kernels unless someone sets up a regular testing (build bot) with such kernels for upstream code. Also, please note, that even if the libsanitizer code builds with older kernels, we can't guarantee that it actually works, because this is not what we test with.