[tip:x86/asm 8/13] arch/x86/kernel/alternative.o: warning: objtool: optimize_nops()+0x3a: unreachable instruction
From: kbuild test robot
Date: Mon Jul 24 2017 - 12:09:36 EST
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
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