linux-kernel - vmlinux.o: warning: objtool: __fentry__()+0x8c: call without frame pointer save/setup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <202204112113.ys4DIvVl-lkp@intel.com>
Date:   Mon, 11 Apr 2022 21:04:57 +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
Subject: vmlinux.o: warning: objtool: __fentry__()+0x8c: call without frame
 pointer save/setup

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ce522ba9ef7e2d9fb22a39eb3371c0c64e2a433e
commit: ed53a0d971926e484d86cce617ec02a7ee85c3fe x86/alternative: Use .ibt_endbr_seal to seal indirect calls
date:   4 weeks ago
config: x86_64-randconfig-r022-20220411 (https://download.01.org/0day-ci/archive/20220411/202204112113.ys4DIvVl-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-19) 11.2.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ed53a0d971926e484d86cce617ec02a7ee85c3fe
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout ed53a0d971926e484d86cce617ec02a7ee85c3fe
        # save the config file 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: ibt_selftest()+0x11: sibling call from callable instruction with modified stack frame
>> vmlinux.o: warning: objtool: __fentry__()+0x8c: call without frame pointer save/setup
   vmlinux.o: warning: objtool: do_syscall_64()+0x10: call to static_key_count.constprop.0() leaves .noinstr.text section
   vmlinux.o: warning: objtool: mce_start()+0x3d: call to __kcsan_check_access() leaves .noinstr.text section
   vmlinux.o: warning: objtool: mce_gather_info()+0x3f: call to v8086_mode.constprop.0() leaves .noinstr.text section
   vmlinux.o: warning: objtool: mce_read_aux()+0xe4: call to mca_msr_reg() leaves .noinstr.text section
   vmlinux.o: warning: objtool: do_machine_check()+0xab: call to mce_no_way_out() leaves .noinstr.text section
   vmlinux.o: warning: objtool: mce_severity_amd.constprop.0()+0x45: call to mce_severity_amd_smca() leaves .noinstr.text section
   vmlinux.o: warning: objtool: enter_from_user_mode()+0x1d: call to test_bit() leaves .noinstr.text section
   vmlinux.o: warning: objtool: syscall_enter_from_user_mode()+0x21: call to test_bit() leaves .noinstr.text section
   vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare()+0x1d: call to test_bit() leaves .noinstr.text section
   vmlinux.o: warning: objtool: exit_to_user_mode()+0x1f: call to static_key_count() leaves .noinstr.text section
   vmlinux.o: warning: objtool: syscall_exit_to_user_mode()+0x38: call to static_key_count() leaves .noinstr.text section
   vmlinux.o: warning: objtool: irqentry_enter_from_user_mode()+0x1d: call to test_bit() leaves .noinstr.text section
   vmlinux.o: warning: objtool: irqentry_exit_to_user_mode()+0x26: call to static_key_count() leaves .noinstr.text section
   vmlinux.o: warning: objtool: ibt_selftest()+0x1e: return with modified stack frame

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