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

From: Fengguang Wu
Date: Tue Jul 19 2016 - 21:12:25 EST


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

---
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