linux-kernel - Re: [tip:ras/core] BUILD SUCCESS de768416b203ac84e02a757b782a32efb388476f

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Date:   Fri, 31 Dec 2021 08:46:52 +0800
From:   "Chen, Rong A" <rong.a.chen@...el.com>
To:     Borislav Petkov <bp@...en8.de>, kernel test robot <lkp@...el.com>
Cc:     x86-ml <x86@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [tip:ras/core] BUILD SUCCESS
 de768416b203ac84e02a757b782a32efb388476f



On 12/29/2021 5:34 PM, Borislav Petkov wrote:
> On Wed, Dec 29, 2021 at 08:13:09AM +0800, kernel test robot wrote:
>> tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git ras/core
>> branch HEAD: de768416b203ac84e02a757b782a32efb388476f  x86/mce/inject: Avoid out-of-bounds write when setting flags
>>
>> possible Warning in current branch (please contact us if interested):
>>
>> vmlinux.o: warning: objtool: do_machine_check()+0x59a: call to test_bit() leaves .noinstr.text section
>>
>> Warning ids grouped by kconfigs:
>>
>> gcc_recent_errors
>> `-- x86_64-buildonly-randconfig-r006-20211228
>>      `-- vmlinux.o:warning:objtool:do_machine_check():call-to-test_bit()-leaves-.noinstr.text-section
> 
> Yes, I'm interested. Please send me reproduction instructions.
> 
> Thx.
> 


Hi Borislav,

Below is the report:

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git ras/core
head:   de768416b203ac84e02a757b782a32efb388476f
commit: b4813539d37fa31fed62cdfab7bd2dd8929c5b2e [15/23] x86/mce: Mark 
mce_end() noinstr
config: x86_64-buildonly-randconfig-r006-20211228 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
         # 
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=b4813539d37fa31fed62cdfab7bd2dd8929c5b2e
         git remote add tip 
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
         git fetch --no-tags tip ras/core
         git checkout b4813539d37fa31fed62cdfab7bd2dd8929c5b2e
         # save the config file to linux build tree
         mkdir build_dir
         make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

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 >>):

 >> vmlinux.o: warning: objtool: do_machine_check()+0x59a: call to 
test_bit() leaves .noinstr.text section

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment "config.gz" of type "application/x-gzip" (35702 bytes)