linux-kernel - [ammarfaizi2-block:stable/linux-stable-rc/queue/5.15 146/150] kernel/futex.o: warning: objtool: futex_atomic_op

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Message-ID: <202205120956.qLpGQurX-lkp@intel.com>
Date:   Thu, 12 May 2022 10:00:33 +0800
From:   kernel test robot <lkp@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Sasha Levin <sashal@...nel.org>,
        Borislav Petkov <bp@...e.de>
Subject: [ammarfaizi2-block:stable/linux-stable-rc/queue/5.15 146/150]
 kernel/futex.o: warning: objtool: futex_atomic_op_inuser()+0xb8: unreachable
 instruction

tree:   https://github.com/ammarfaizi2/linux-block stable/linux-stable-rc/queue/5.15
head:   305e905f70311e1b49cc730931a19c3e364f4d8c
commit: 45dc9d706619a6814e4063d5431483f94badb5a1 [146/150] x86: Add straight-line-speculation mitigation
config: x86_64-randconfig-m001-20220509 (https://download.01.org/0day-ci/archive/20220512/202205120956.qLpGQurX-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-20) 11.2.0
reproduce (this is a W=1 build):
        # https://github.com/ammarfaizi2/linux-block/commit/45dc9d706619a6814e4063d5431483f94badb5a1
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block stable/linux-stable-rc/queue/5.15
        git checkout 45dc9d706619a6814e4063d5431483f94badb5a1
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        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 >>):

>> kernel/futex.o: warning: objtool: futex_atomic_op_inuser()+0xb8: unreachable instruction
--
>> mm/madvise.o: warning: objtool: madvise_behavior()+0x69: unreachable instruction
--
>> kernel/bpf/btf.o: warning: objtool: __btf_resolve_size()+0x72: unreachable instruction

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp