Hi, Building 5.10.11 fails on my (x86-64) laptop thusly: .. AS arch/x86/entry/thunk_64.o CC arch/x86/entry/vsyscall/vsyscall_64.o AS arch/x86/realmode/rm/header.o CC arch/x86/mm/pat/set_memory.o CC arch/x86/events/amd/core.o CC arch/x86/kernel/fpu/init.o CC arch/x86/entry/vdso/vma.o CC kernel/sched/core.o arch/x86/entry/thunk_64.o: warning: objtool: missing symbol for insn at offset 0x3e AS arch/x86/realmode/rm/trampoline_64.o make[2]: *** [scripts/Makefile.build:360: arch/x86/entry/thunk_64.o] Error 255 make[2]: *** Deleting file 'arch/x86/entry/thunk_64.o' make[2]: *** Waiting for unfinished jobs.... .. Compiler is latest snapshot of gcc-10. Happy to test the fix but please cc me as I'm not subscribed Thanks, Chris