On Tue, 14 Jun 2016 12:29:59 -0700
Laura Abbott [off-list ref] wrote:

On 05/23/2016 03:10 PM, Emese Revfy wrote:
1) make mrproper
2) make defconfig
3) enable GCC_PLUGINS, GCC_PLUGIN_CYC_COMPLEXITY
4) enable FUNCTION_TRACER (it will select other options as well)
5) make && make modules

ERROR: "__fentry__" [net/ipv4/netfilter/ipt_MASQUERADE.ko] undefined!
ERROR: "__fentry__" [fs/efivarfs/efivarfs.ko] undefined!
ERROR: "__fentry__" [drivers/thermal/x86_pkg_temp_thermal.ko] undefined!
scripts/Makefile.modpost:91: recipe for target '__modpost' failed
make[1]: *** [__modpost] Error 1

The patch below fixes this bug, but I think it is ugly.
https://github.com/ephox-gcc-plugins/gcc-plugins_linux-next/commit/73e2d117daa7f3c6aee8935ecbb318354ff9cd82

If anyone has a better idea to fix this, please let me know.

Thanks
-- 
Emese