linux-kernel - [tip:x86/asm 8/13] arch/x86/kernel/alternative.o: warning: objtool: optimize

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Message-ID: <201707250035.x4Fs34Uw%fengguang.wu@intel.com>
Date:   Tue, 25 Jul 2017 00:08:45 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        tipbuild@...or.com, Ingo Molnar <mingo@...nel.org>
Subject: [tip:x86/asm 8/13] arch/x86/kernel/alternative.o: warning: objtool:
 optimize_nops()+0x3a: unreachable instruction

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/asm
head:   9683a64fc3cb67e663859a6bb2e0db5dcee9ed32
commit: 76846bf3cb09e98881cb4908385a0e899716b01f [8/13] x86/asm: Add unwind hint annotations to sync_core()
config: x86_64-randconfig-in0-07242041 (attached as .config)
compiler: gcc-4.6 (Debian 4.6.4-7) 4.6.4
reproduce:
        git checkout 76846bf3cb09e98881cb4908385a0e899716b01f
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/alternative.o: warning: objtool: optimize_nops()+0x3a: unreachable instruction

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

Download attachment ".config.gz" of type "application/gzip" (25106 bytes)