vmlinux.o: warning: objtool: __fentry__()+0x8d: call without frame pointer save/setup

From: kernel test robot
Date: Mon May 16 2022 - 10:42:41 EST


Hi Peter,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 42226c989789d8da4af1de0c31070c96726d990c
commit: ed53a0d971926e484d86cce617ec02a7ee85c3fe x86/alternative: Use .ibt_endbr_seal to seal indirect calls
date: 9 weeks ago
config: x86_64-randconfig-c022-20220516 (https://download.01.org/0day-ci/archive/20220516/202205162241.fTWJlbRp-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.2.0-20) 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
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@xxxxxxxxx>

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__()+0x8d: call without frame pointer save/setup
vmlinux.o: warning: objtool: ibt_selftest()+0x1e: return with modified stack frame

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