linux-kernel - [jpoimboe:objtool-test 1/1] drivers/net/wireless/mac80211_hwsim.o: warning: objtool: mac80211_hwsim

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Message-ID: <202201190702.XNSXrMTK-lkp@intel.com>
Date:   Wed, 19 Jan 2022 07:05:54 +0800
From:   kernel test robot <lkp@...el.com>
To:     Nick Desaulniers <ndesaulniers@...gle.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Josh Poimboeuf <jpoimboe@...hat.com>
Subject: [jpoimboe:objtool-test 1/1] drivers/net/wireless/mac80211_hwsim.o:
 warning: objtool: mac80211_hwsim_tx()+0xbe2: unreachable instruction

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git objtool-test
head:   14d7c68274f2a17d5734c87971f08cd08cf862c6
commit: 14d7c68274f2a17d5734c87971f08cd08cf862c6 [1/1] objtool: prefer memory clobber & %= to volatile & __COUNTER__
config: x86_64-rhel-8.3-func (https://download.01.org/0day-ci/archive/20220119/202201190702.XNSXrMTK-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git/commit/?id=14d7c68274f2a17d5734c87971f08cd08cf862c6
        git remote add jpoimboe https://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git
        git fetch --no-tags jpoimboe objtool-test
        git checkout 14d7c68274f2a17d5734c87971f08cd08cf862c6
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/net/

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 >>):

>> drivers/net/wireless/mac80211_hwsim.o: warning: objtool: mac80211_hwsim_tx()+0xbe2: unreachable instruction

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org