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security/yama/yama_lsm.o: warning: objtool: report_access()+0x210: function has unreachable instruction

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  security/yama/yama_lsm.o: warning: objtool: report_access()+0x210:  function has unreachable instruction kbuild test robot <fengguang.wu@intel.com> - 2016-07-19 16:20 +0200
    Re: [kbuild-all] security/yama/yama_lsm.o: warning: objtool:  report_access()+0x210: function has unreachable instruction Fengguang Wu <fengguang.wu@intel.com> - 2016-07-20 03:20 +0200

#1446514 — security/yama/yama_lsm.o: warning: objtool: report_access()+0x210: function has unreachable instruction

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   47ef4ad2684d380dd6d596140fb79395115c3950
commit: dca6b4149181baaa363b9a7ce7c550840bb3bc83 Yama: fix double-spinlock and user access in atomic context
date:   8 weeks ago
config: x86_64-randconfig-s2-07191718 (attached as .config)
compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
reproduce:
        git checkout dca6b4149181baaa363b9a7ce7c550840bb3bc83
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

>> security/yama/yama_lsm.o: warning: objtool: report_access()+0x210: function has unreachable instruction

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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#1446861 — Re: [kbuild-all] security/yama/yama_lsm.o: warning: objtool: report_access()+0x210: function has unreachable instruction

Hi Jann,

Sorry please ignore this one -- it looks like false warning from old
gcc 4.4 and 4.6 -- we just enabled old compiler tests triggered 10k
these warnings..

Thanks,
Fengguang

On Tue, Jul 19, 2016 at 10:20:05PM +0800, kbuild test robot wrote:
>tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>head:   47ef4ad2684d380dd6d596140fb79395115c3950
>commit: dca6b4149181baaa363b9a7ce7c550840bb3bc83 Yama: fix double-spinlock and user access in atomic context
>date:   8 weeks ago
>config: x86_64-randconfig-s2-07191718 (attached as .config)
>compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
>reproduce:
>        git checkout dca6b4149181baaa363b9a7ce7c550840bb3bc83
>        # save the attached .config to linux build tree
>        make ARCH=x86_64
>
>All warnings (new ones prefixed by >>):
>
>>> security/yama/yama_lsm.o: warning: objtool: report_access()+0x210: function has unreachable instruction
>
>---
>0-DAY kernel test infrastructure                Open Source Technology Center
>https://lists.01.org/pipermail/kbuild-all                   Intel Corporation


>_______________________________________________
>kbuild-all mailing list
>kbuild-all@lists.01.org
>https://lists.01.org/mailman/listinfo/kbuild-all

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