linux-kernel - Re: [tip:objtool/core 8/12] vmlinux.o: warning: objtool: do_arch_prctl_common+0xf4: preempt_schedule_thunk() is missing a _

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Message-ID: <20230530230917.l7aowzucoqkwnd2r@treble>
Date:   Tue, 30 May 2023 16:09:17 -0700
From:   Josh Poimboeuf <jpoimboe@...nel.org>
To:     kernel test robot <lkp@...el.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        x86@...nel.org, Miroslav Benes <mbenes@...e.cz>
Subject: Re: [tip:objtool/core 8/12] vmlinux.o: warning: objtool:
 do_arch_prctl_common+0xf4: preempt_schedule_thunk() is missing a __noreturn
 annotation

On Sun, May 28, 2023 at 10:35:24AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git objtool/core
> head:   6245ce4ab670166efcdae843c35c14e4c0811aa3
> commit: fedb724c3db5490234ddde0103811c28c2fedae0 [8/12] objtool: Detect missing __noreturn annotations
> config: x86_64-randconfig-x085-20230528 (https://download.01.org/0day-ci/archive/20230528/202305281037.3PaI3tW4-lkp@intel.com/config)
> compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
> reproduce (this is a W=1 build):
>         # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=fedb724c3db5490234ddde0103811c28c2fedae0
>         git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
>         git fetch --no-tags tip objtool/core
>         git checkout fedb724c3db5490234ddde0103811c28c2fedae0
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         make W=1 O=build_dir ARCH=x86_64 olddefconfig
>         make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash
> 
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202305281037.3PaI3tW4-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
> >> vmlinux.o: warning: objtool: do_arch_prctl_common+0xf4: preempt_schedule_thunk() is missing a __noreturn annotation

I sent a patch for this one here:

  https://lkml.kernel.org/lkml/46aa8aeb716f302e22e1673ae15ee6fe050b41f4.1685488050.git.jpoimboe@kernel.org

-- 
Josh