Hi Greg, I see the following build warning / errors everywhere on stable-rc 5.15 branch. ld.lld: error: undefined symbol: kallsyms_on_each_symbol >>> referenced by trace_kprobe.c >>> trace/trace_kprobe.o:(create_local_trace_kprobe) in archive kernel/built-in.a >>> referenced by trace_kprobe.c >>> trace/trace_kprobe.o:(__trace_kprobe_create) in archive kernel/built-in.a make[1]: *** [Makefile:1227: vmlinux] Error 1 Links, - https://storage.tuxsuite.com/public/linaro/lkft/builds/2XXALLRIZaXJVcqhff4ZmGTeZoQ/ - Naresh
