On Sun, Jan 27, 2019 at 10:45:03PM -0500, valdis.kletni...@vt.edu wrote:
> Seen in a build:
> 
>   CC      arch/x86/kernel/dumpstack.o
> arch/x86/kernel/dumpstack.o: warning: objtool: oops_begin()+0x9: undefined 
> stack state
> arch/x86/kernel/dumpstack.o: warning: objtool: oops_begin()+0x0: stack state 
> mismatch: cfa1=6+16 cfa2=7+8
> 
> Probably a gcc9 code generation that objtool doesn't know about?

Can you share the .o file?

-- 
Josh

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