linux-kernel - Re: [patch 06/12] x86/entry: Convert system vectors to irq stack macro

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Message-ID: <YB1SdvRbHMY7IRrY@hirez.programming.kicks-ass.net>
Date:   Fri, 5 Feb 2021 15:13:10 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     kernel test robot <lkp@...el.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>, kbuild-all@...ts.01.org,
        x86@...nel.org, Josh Poimboeuf <jpoimboe@...hat.com>,
        Kees Cook <keescook@...omium.org>
Subject: Re: [patch 06/12] x86/entry: Convert system vectors to irq stack
 macro

On Fri, Feb 05, 2021 at 11:52:40AM +0800, kernel test robot wrote:
> Hi Thomas,
> 
> I love your patch! Perhaps something to improve:
> 
> [auto build test WARNING on tip/x86/asm]
> [also build test WARNING on tip/master linus/master tip/x86/core v5.11-rc6 next-20210125]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch]
> 
> url:    https://github.com/0day-ci/linux/commits/Thomas-Gleixner/x86-irq-64-Inline-irq-stack-switching/20210205-091059
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 5c99720b28381bb400d4f546734c34ddaf608761
> config: x86_64-randconfig-r026-20210204 (attached as .config)
> compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
> reproduce (this is a W=1 build):
>         # https://github.com/0day-ci/linux/commit/d91ff58e804175dd59e483c7cf236e1fe66c2187
>         git remote add linux-review https://github.com/0day-ci/linux
>         git fetch --no-tags linux-review Thomas-Gleixner/x86-irq-64-Inline-irq-stack-switching/20210205-091059
>         git checkout d91ff58e804175dd59e483c7cf236e1fe66c2187
>         # save the attached .config to linux build tree
>         make W=1 ARCH=x86_64 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All warnings (new ones prefixed by >>):
> 
> >> arch/x86/hyperv/hv_init.o: warning: objtool: sysvec_hyperv_reenlightenment()+0x7f: undefined stack state
> --
> >> arch/x86/kernel/cpu/mshyperv.o: warning: objtool: sysvec_hyperv_callback()+0x7f: undefined stack state
> >> arch/x86/kernel/cpu/mshyperv.o: warning: objtool: sysvec_hyperv_stimer0()+0x7f: undefined stack state

It would help if you'd actually applied the patches to a tree that had
the required objtool patches as described in 0/n. Or better yet, don't
scrape emails if the 0/n includes a git link which you'll run on anyway.