vmlinux.o: warning: objtool: entry_SYSCALL_compat+0x0: ANNOTATE_NOENDBR on ENDBR

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   80e19f34c2887a8881084b7bb7480e9544d56b91
commit: f43b9876e857c739d407bc56df288b0ebe1a9164 x86/retbleed: Add fine grained Kconfig knobs
date:   3 weeks ago
config: x86_64-randconfig-r021-20220718 (https://download.01.org/0day-ci/archive/20220719/202207190623.QZI6dG5x-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f43b9876e857c739d407bc56df288b0ebe1a9164
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout f43b9876e857c739d407bc56df288b0ebe1a9164
        # 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 where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> vmlinux.o: warning: objtool: entry_SYSCALL_compat+0x0: ANNOTATE_NOENDBR on ENDBR

-- 
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https://01.org/lkp