linux-kernel - Re: next-20190125 - objtool complains about dumpstack

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Message-ID: <20190128041825.db2fsdktmisvzq72@treble>
Date:   Sun, 27 Jan 2019 22:18:25 -0600
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     valdis.kletnieks@...edu
Cc:     Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org
Subject: Re: next-20190125 - objtool complains about dumpstack

On Sun, Jan 27, 2019 at 10:45:03PM -0500, valdis.kletnieks@...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