linux-kernel - vmlinux.o: warning: objtool: noist_exc_machine_check()+0x93: call to __sanitizer_cov_trace

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Message-ID: <202108221656.2tMcBD2a-lkp@intel.com>
Date:   Sun, 22 Aug 2021 16:54:06 +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>, Borislav Petkov <bp@...e.de>,
        Miroslav Benes <mbenes@...e.cz>
Subject: vmlinux.o: warning: objtool: noist_exc_machine_check()+0x93: call to
 __sanitizer_cov_trace_pc() leaves .noinstr.text section

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   9ff50bf2f2ff5fab01cac26d8eed21a89308e6ef
commit: bcb1b6ff39da7e8a6a986eb08126fba2b5e13c32 objtool: Correctly handle retpoline thunk calls
date:   5 months ago
config: x86_64-buildonly-randconfig-r003-20210822 (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=bcb1b6ff39da7e8a6a986eb08126fba2b5e13c32
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout bcb1b6ff39da7e8a6a986eb08126fba2b5e13c32
        # 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: mce_wrmsrl.constprop.0()+0x6b: call to __sanitizer_cov_trace_pc() leaves .noinstr.text section
   vmlinux.o: warning: objtool: do_machine_check()+0xb14: call to queue_task_work() leaves .noinstr.text section
   vmlinux.o: warning: objtool: exc_machine_check()+0xdb: call to __sanitizer_cov_trace_pc() leaves .noinstr.text section
>> vmlinux.o: warning: objtool: noist_exc_machine_check()+0x93: call to __sanitizer_cov_trace_pc() leaves .noinstr.text section
   vmlinux.o: warning: objtool: __context_tracking_enter()+0x95: call to __sanitizer_cov_trace_pc() leaves .noinstr.text section
   vmlinux.o: warning: objtool: __context_tracking_exit()+0x42: call to __sanitizer_cov_trace_pc() 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" (37038 bytes)