linux-kernel - vmlinux.o: warning: objtool: look_up_lock_class.isra.0()+0xe4: call to rcu_read_lock_any

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Date:   Sat, 14 Aug 2021 17:20:45 +0800
From:   kernel test robot <lkp@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Ingo Molnar <mingo@...nel.org>
Subject: vmlinux.o: warning: objtool: look_up_lock_class.isra.0()+0xe4: call
 to rcu_read_lock_any_held() leaves .noinstr.text section

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   dfa377c35d70c31139b1274ec49f87d380996c42
commit: 49faa77759b211fff344898edc23bb780707fff5 locking/lockdep: Improve noinstr vs errors
date:   8 weeks ago
config: x86_64-buildonly-randconfig-r001-20210812 (attached as .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/torvalds/linux.git/commit/?id=49faa77759b211fff344898edc23bb780707fff5
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 49faa77759b211fff344898edc23bb780707fff5
        # save the attached .config to linux build tree
        mkdir build_dir
        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 >>):

   vmlinux.o: warning: objtool: do_machine_check()+0x5e9: call to memset() leaves .noinstr.text section
>> vmlinux.o: warning: objtool: look_up_lock_class.isra.0()+0xe4: call to rcu_read_lock_any_held() leaves .noinstr.text section

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

Download attachment ".config.gz" of type "application/gzip" (38317 bytes)